Crimping device

Abstract

The invention discloses a crimping device, which comprises a fixed seat with a pivoting part and a pressing piece, the pressing piece comprises a metal sheet and a plastic shaft arranged corresponding to the pivoting part, the plastic shaft is formed on the metal sheet in an injection molding manner, and the metal sheet is formed by bending a metal plate and is provided with a rear wall and a pressing part; the rear wall is provided with a front surface and a rear surface which are opposite front and back, and an accommodating groove which penetrates through the front surface and the rear surface front and back and is arranged corresponding to the plastic shaft; the plastic shaft comprises a first part attached to the front surface, a second part attached to the rear surface and a third part penetrating through the containing groove in the front-back direction to be connected with the first part and the second part into a whole, the pivoting part is at least partially contained in the containing groove, the plastic shaft is pivoted to the pivoting part, and therefore the metal sheet can rotate up and down relative to the fixing base. When the metal sheet is buckled, the pressing part is used for pressing the crimped element downwards. The installation process of the crimping device is simplified, and the structural strength of the pivoted part of the pressing piece and the fixed seat is enhanced.

Description

Technical Field

[0001] This invention relates to a crimping device, and more particularly to a crimping device that is easy to assemble and has a stable structure. Background Technology

[0002] A crimping device is used to press together components to achieve a good electrical connection. It includes a fixed base, a pressing member made of metal, and a pivot shaft assembled to the pressing member and pivotally connected to the fixed base. The pivot shaft is a metal cylinder. The pressing member is pivotally connected to the fixed base via the pivot shaft, allowing the pressing member to rotate relative to the fixed base. However, since the pressing member of the crimping device requires separate assembly of the pivot shaft, and then the pivot shaft is assembled before being assembled into the fixed base, the installation process is cumbersome.

[0003] Another type of pressing device uses plastic materials for both the pivot shaft and the pressing component. In other words, the pressing component and the pivot shaft are injection molded as one piece, which can solve the problem of complicated assembly. However, the pressing component made of plastic material is weaker and occupies more space than the pressing component made of metal material.

[0004] Therefore, it is necessary to design a new crimping device to overcome the above problems. Summary of the Invention

[0005] To address the problems of the prior art, the present invention aims to provide a new pressing device that injection molds a plastic shaft onto a metal sheet to form a pressed part, simplifying the installation process of the pressing device. The plastic shaft is attached to the front and rear sides of the rear wall of the metal sheet and passes through the receiving groove of the rear wall to connect the front and rear parts, thereby strengthening the structural strength of the pivot joint between the pressed part and the fixed seat.

[0006] To achieve the above objectives, the present invention provides a crimping device, comprising: a fixed base having a pivot portion; and a pressing member including a metal sheet and a plastic shaft corresponding to the pivot portion. The plastic shaft is injection molded onto the metal sheet. The metal sheet is formed by bending a metal plate and has a rear wall and a pressing portion. The rear wall has a front surface and a rear surface arranged opposite to each other, and a receiving groove that passes through the front surface and the rear surface and is corresponding to the plastic shaft. The pressing portion is located in front of the rear wall. The plastic shaft includes a first portion attached to the front surface, a second portion attached to the rear surface, and a third portion that passes through the receiving groove in a front-rear direction and is integrally connected to the first portion and the second portion. The pivot portion is at least partially received in the receiving groove so that the plastic shaft is pivotally connected to the pivot portion, thereby allowing the metal sheet to rotate up and down relative to the fixed base. When the metal sheet is engaged, the pressing portion is used to press down on the crimped element.

[0007] Furthermore, the rear wall bends forward from both the left and right ends to form a side wall, and the rear wall and the side walls enclose a space; a cantilever is formed by bending forward from the rear wall, and the cantilever has the pressing part, and the metal sheet is located only above the space by the cantilever.

[0008] Furthermore, the cantilever has the pressing part, and there are two receiving slots, which are spaced apart from each other on the left and right. The bend where the cantilever connects to the rear wall is located between the two receiving slots. The maximum dimension of the bend where the cantilever connects to the rear wall in the left-right direction is less than the minimum distance between the two receiving slots, and the width of the bend where the cantilever connects to the rear wall is less than the width of the pressing part.

[0009] Furthermore, a plastic operating part is injection molded onto the metal sheet and located above the pressed element. By pressing the plastic operating part, the metal sheet is rotated downward relative to the fixing seat and engages with the fixing seat.

[0010] Furthermore, the metal sheet includes a top wall that bends forward from the upper end of the rear wall and then extends horizontally forward, two through slots, cantilever arms that are connected to the through slots one by one, and a connecting portion located in front of the two through slots and connecting the two through slots. The cantilever arms have the pressing portion and the pressing portion protrudes downward from the top wall. The plastic operating portion is injection molded into the connecting portion.

[0011] Furthermore, the rear wall bends forward from both ends to form two side walls, and an extension connects the two side walls; the fixing seat includes two side walls arranged opposite to each other, the side walls are located inside the side walls, the side walls extend forward beyond the extension and the extension is located directly above the side walls, the side walls bend towards the side walls to form a locking part, the side walls bend away from the side walls to form a locked part, the locked part is located below the locking part and locked to the locking part, a pull ring connects to the front end of the two side walls, lifting the pull ring upwards causes the locked part to move upwards and disengage from the locking part.

[0012] Furthermore, the rear wall has two receiving grooves, which are spaced apart from each other. The pressing component includes two plastic shafts that correspond one-to-one with the two receiving grooves and a plastic rod integrally formed with the two plastic shafts. The plastic rod is spaced apart vertically from the fixing seat and is attached to the front surface and the rear surface. The rear surface of the plastic rod is flat and higher than the plastic shafts.

[0013] Furthermore, the plastic rod is higher than the receiving groove and partially enters the receiving groove.

[0014] Furthermore, the fixing base includes a metal body and a plastic positioning component injection molded on the metal body. The metal body includes two side walls arranged opposite to each other and a bottom wall connecting the two side walls. The pivot portion connects to the bottom wall, and the bottom wall is located below the rear wall. The plastic positioning component surrounds a vertically penetrating receiving cavity for receiving the pressed element. The plastic positioning component includes a stop surface that is closer to the pressed element in the left-right direction relative to the side walls, a first stop portion located behind the pressed element, and a second stop portion located in front of the pressed element. The stop surface is used to limit the excessive displacement of the pressed element in the left-right direction, and the first stop portion and the second stop portion are used to prevent the excessive displacement of the pressed element in the front-back direction.

[0015] Furthermore, the plastic positioning component includes two parts that are separated from each other on the left and right sides, and the first stop part is completely offset from the pivot part in the front-back direction.

[0016] Furthermore, the sidewall includes a first wall and a second wall arranged opposite to each other on the left and right sides. The second wall is located inside the first wall. The first wall is bent away from the second wall to form a locking part. The metal sheet has a side wall on each of its left and right sides. The side wall is located on the side of the first wall away from the second wall. The side wall is bent away from the second wall to form a locking part. The locking part is located below the locking part and is locked to the locking part. When the first wall is pressed inward, and the locking part disengages from the locking part, the second wall prevents the first wall from moving excessively inward.

[0017] Furthermore, a bend connects the first wall and the second wall, and the plastic positioning component is injection molded into the bend.

[0018] Furthermore, the fixing base includes two side walls arranged opposite to each other and a bottom wall connecting the two side walls. The pivot part connects to the bottom wall, and the bottom wall is located below the rear wall. Two engaging parts protrude from the opposite sides of the two side walls. The metal sheet includes two side walls arranged opposite to each other, a top wall that bends forward from the upper end of the rear wall and extends horizontally forward, and two clearance grooves arranged opposite to each other. The top wall connects the two side walls. The clearance grooves penetrate the side walls in the left-right direction and penetrate the top wall vertically. The bottom edge of the clearance groove forms a locked part. The engaging part is located above the locked part and engages with the locked part. The side wall protrudes upward from the clearance groove. When the side wall is pressed inward, and the engaging part disengages from engaging the locked part, the top wall prevents the side wall from moving excessively inward.

[0019] Compared with the prior art, the present invention has the following beneficial effects: By injection molding the plastic shaft onto the rear wall, attaching the first part to the front surface, the second part to the rear surface, and the third part passing through the receiving groove and connecting it to the first and second parts, the bond between the plastic shaft and the rear wall is strengthened, thereby increasing the overall strength of the plastic shaft (including a portion of the rear wall) and making it less prone to breakage. The pivot portion is at least partially received in the receiving groove, eliminating the need for a separate groove on the rear wall to receive the pivot portion, thus enhancing the structural strength of the rear wall and simplifying the molding process of the metal sheet. Attached Figure Description

[0020] Figure 1 This is a perspective view of the crimping device of the first embodiment of the present invention, which is soldered to a circuit board but not crimped to the component being crimped. Figure 2 for Figure 1 Exploded view of the crimping device; Figure 3 for Figure 1 The diagram only shows a three-dimensional assembly of the crimping device mounting base; Figure 4 for Figure 2 A three-dimensional view of the central pressing component pivotally connected and engaged with the fixed base; Figure 5 for Figure 4 Rear view; Figure 6 for Figure 5 A three-dimensional sectional view cut along the AA direction; Figure 7 for Figure 1 A perspective view of a crimping device that houses and presses against the crimped component; Figure 8 for Figure 7 Top view; Figure 9 This is a perspective view of another embodiment of the crimping device of the present invention; Figure 10 For three Figure 9 A three-dimensional view showing the crimping devices arranged and fixed on a circuit board, with a pull ring installed on the middle crimping device; Figure 11 This is a perspective view of the crimping device of the second embodiment of the present invention, which is soldered to a circuit board but not crimped to the component being crimped. Figure 12 for Figure 11 Exploded perspective view of the intermediate pressure connection device; Figure 13 for Figure 11 A perspective view of a crimping device that houses and presses against the crimped component; Figure 14 for Figure 13 A three-dimensional sectional view cut along the BB direction.

[0021] crimping device 100 Fixed base 1 Metal body 1a Plastic positioning part 1b Side wall 11 First Wall 111 Second Wall 112 Bending part 113 Card Section 114 Bottom wall 12 Pivot 13 Fixing part 14 Stop surface 15 First stop section 16 Second stop section 17 Pressed part 2 Metal sheet 2a Plastic shaft 2b Plastic rod 2c Plastic operating section 2d Rear wall 21 Front surface 211 Rear surface 212 Bottom 213 Containment Slot 214 First groove 215 Second groove 216 22 cantilever Connector 221 Pressure section 222 Side wall 23 Department 24 Part 1, Chapter 25 Part 2, 26 Part 3, Chapter 27 Part 4, 28 Top wall 29 Through slot 20 Connecting segment T Space Q Give way slot P Containment cavity K Extension L Pull ring 3 31 pull strap Ring 32 200 Crimped Components Circuit board 300 Up and down direction Z Left and right directions X Forward and backward direction Y Detailed Implementation

[0022] To facilitate a better understanding of the purpose, structure, and features of this invention, the invention defines a vertical direction (Z), a horizontal direction (X), and a front-back direction (Y). These three directions are mutually perpendicular. The invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 8 As shown, this is a first embodiment of the crimping device 100 of the present invention. Figures 11 to 13 The image shows a second embodiment of the crimping device 100 of the present invention. Both embodiments of the crimping device 100 are used to press a crimped element 200 so that the crimped element 200 presses downward against a circuit board 300 (in this embodiment, the circuit board 300 is the CPU substrate) to achieve a good electrical connection between the two. The crimped element 200 is a crimp-type cable connector.

[0024] like Figure 1 and Figure 2 As shown, the crimping device 100 includes a fixed base 1 and a pressing member 2. The fixed base 1 includes a metal body 1a and a plastic positioning member 1b injection molded with the metal body 1a. The plastic positioning member 1b surrounds a vertically penetrating receiving cavity K for receiving the crimped element 200. In this embodiment, there are two plastic positioning members 1b that are separated from each other (of course, in other embodiments, the plastic positioning member 1b can also be a one-piece, that is, the two plastic positioning members 1b in this embodiment are connected together to form a one-piece). The metal body 1a is fixed to the circuit board 300, and the pressing member 2 is pivotally connected to the fixed base 1.

[0025] like Figure 1 and Figure 2 As shown, the metal body 1a is formed by stamping a metal sheet and includes two side walls 11 arranged opposite to each other and a bottom wall 12 connecting the two side walls 11. The two side walls 11 and the bottom wall 12 form a cavity with open top and bottom. The front end of the metal body 1a has an opening that communicates with the cavity from front to back.

[0026] like Figure 2 and Figure 4As shown, each of the sidewalls 11 includes a first wall 111 and a second wall 112 spaced apart and arranged opposite to each other, a bent portion 113 connecting the first wall 111 and the second wall 112, and a locking portion 114. The second wall 112 is located inside the first wall 111, that is, along the left-right direction X, the second wall 112 is closer to the pressed element 200 relative to the first wall 111. The plate surface of the bottom wall 12 extends horizontally, and the second wall 112 is formed by bending upward and extending forward from the bottom wall 12. Both the first wall 111 and the second wall 112 are perpendicular to the bottom wall 12. The bent portion 113 bends outward from the upper end of the second wall 112. Along the front-back direction Y, the bent portion 113 is closer to the bottom wall 12 relative to the locking portion 114. The dimension of the bent portion 113 in the front-back direction Y is much smaller than the dimension of the second wall 112 in the front-back direction Y, which facilitates the bending and forming of the bent portion 113. The front end of the first wall 111 is a free end, which can undergo elastic deformation under force in the left-right direction X. The engaging part 114 is formed by bending from the upper end of the first wall 111 in a direction away from the second wall 112, and the engaging part 114 is used to engage with the pressing member 2.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the metal body 1a also includes two pivot parts 13 and multiple fixing parts 14. The two pivot parts 13 are spaced apart in the left-right direction X and are respectively connected to the bottom wall 12. The pivot parts 13 are used to pivotally connect with the pressing member 2 so that the pressing member 2 can rotate up and down to realize the function of opening and closing. In other embodiments, only one pivot part 13 may be provided. The fixing parts 14 are solder feet. Multiple fixing parts 14 are soldered to the circuit board 300 by surface mounting. Each second wall 112 has a fixing part 14 connected to its front end to more firmly fix the second wall 112 to the circuit board 300 and prevent the first wall 111 from displacing excessively inward. In other embodiments, the side wall 11 may not have a second wall 112 (see reference). Figure 9 The fixing part 14 can also be plugged into the circuit board 300 to fix the metal body 1a to the circuit board 300.

[0028] like Figure 2 and Figure 3As shown, the two plastic positioning parts 1b are respectively injection molded onto the corresponding sidewalls 11. Specifically, the plastic positioning parts 1b are injection molded onto the second wall 112 and the bent portion 113 to strengthen the structural strength of the bent portion 113. Each plastic positioning part 1b includes a first stop portion 16 and a second stop portion 17 arranged opposite each other, and a stop surface 15 connecting the first stop portion 16 and the second stop portion 17. The two stop surfaces 15 are arranged facing each other in the left-right direction X. The stop surfaces 15 are closer to the pressed element 200 relative to the second wall 112 in the left-right direction X, limiting the excessive displacement of the pressed element 200 in the left-right direction X (see reference). Figure 7 and Figure 8 ).

[0029] like Figure 3 and Figure 8 As shown, the first stop portion 16 and the second stop portion 17 are located at the front and rear ends of the stop surface 15, and are both disposed further away from the first wall 111 relative to the stop surface 15 in the left-right direction X. The first stop portion 16 is injection molded into the bottom wall 12. The first stop portion 16 is located on the rear side of the pressed element 200, and the second stop portion 17 is located in front of the pressed element 200. The first stop portion 16 and the second stop portion 17 prevent excessive displacement of the pressed element 200 in the front-back direction Y. In the front-back direction Y, the first stop portion 16 is completely offset from the pivot portion 13 to make way for the pivot portion 13.

[0030] like Figure 1 and Figure 2 As shown, the pressing component 2 includes a metal sheet 2a, two plastic shafts 2b, a plastic rod 2c integrally formed with the two plastic shafts 2b, and a plastic operating part 2d. The two plastic shafts 2b and the plastic rod 2c are injection molded onto the metal sheet 2a. Both plastic shafts 2b are cylindrical and protrude upwards and downwards from the plastic rod 2c, respectively. The plastic shafts 2b are housed in the pivot part 13 and are connected to the pivot part 13, allowing the metal sheet 2a to rotate vertically relative to the fixed base 1. The plastic rod 2c is located below the fixed base 1 and is spaced vertically from the fixed base 1 (see reference). Figure 5 The plastic operating part 2d is injection molded onto the metal sheet 2a. The plastic operating part 2d is for the operator to pull or press to open upwards or engage downwards the metal sheet 2a. In other embodiments, the plastic rod 2c may not be provided (see [reference]). Figure 9 The operating part may also not be made of plastic.

[0031] like Figure 2 and Figure 4As shown, the metal sheet 2a includes a rear wall 21, a cantilever 22, two side walls 23, and two locking portions 24. The rear wall 21 is located above the bottom wall 12 and perpendicular to it. The rear wall 21 has a front surface 211 and a rear surface 212 arranged opposite to each other, a bottom surface 213 connecting the front surface 211 and the rear surface 212 in the front-rear direction Y, and two receiving grooves 214, two first grooves 215, and a second groove 216. The plastic rod 2c is attached to the rear surface 212. In other embodiments, the plastic rod 2c may also be attached to both the front surface 211 and the rear surface 212, or only to the front surface 211 without being attached to the rear surface 212.

[0032] like Figure 2 and Figure 6 As shown, the receiving groove 214 extends through the front surface 211 and the rear surface 212. The two receiving grooves 214 are spaced apart from each other and are correspondingly arranged with the two plastic shafts 2b. The plastic shafts 2b pass through the receiving grooves 214 and are injection molded to the rear wall 21. Each pivot part 13 passes through the corresponding receiving groove 214 from back to front and is partially received in the receiving groove 214 so that the plastic shaft 2b is pivotally connected to the pivot part 13.

[0033] like Figure 1 and Figure 2 As shown, both the first groove 215 and the second groove 216 extend through the front surface 211 and the rear surface 212. A first groove 215 is located directly below each receiving groove 214. The first groove 215 is formed by an upward recess from the bottom surface 213 and is spaced vertically from the corresponding receiving groove 214. The second groove 216 is formed by an upward recess from the bottom surface 213 and is located between the two first grooves 215 along the left-right direction X. A portion of the plastic rod 2c enters the second groove 216, facilitating the molding of the plastic rod 2c onto the rear wall 21.

[0034] like Figure 2 , Figure 5 and Figure 6 As shown, the plastic shaft 2b includes a first portion 25 attached to the front surface 211, a second portion 26 attached to the rear surface 212, a third portion 27 that passes through the receiving groove 214 in the front-rear direction Y and is connected to the first portion 25 and the second portion 26 as a whole, and a fourth portion 28 located directly below the third portion 27. The fourth portion 28 passes through the first groove 215 in the front-rear direction Y and is connected to the first portion 25 and the second portion 26 as a whole, thereby enhancing the connection strength between the plastic shaft 2b and the rear wall 21.

[0035] like Figure 2 and Figure 5 As shown, the cantilever 22 extends forward from the rear wall 21, including a connecting section 221 and a pressing part 222. The connecting section 221 connects the pressing part 222 and the rear wall 21. Along the left-right direction X, the connecting section 221 is located between the two receiving grooves 214, and the maximum dimension D1 of the bend where the connecting section 221 connects to the rear wall 21 is less than the minimum distance D2 between the two receiving grooves 214. Along the left-right direction X, the width of the pressing part 222 is greater than the width of the connecting section 221. When the metal sheet 2a is engaged, the pressing part 222 presses downward against the pressed element 200 (see reference). Figure 7 ).

[0036] like Figure 2 and Figure 4 As shown, the two sidewalls 23 extend forward from the left and right ends of the rear wall 21, forming a space Q with the rear wall 21 and the two sidewalls 23. The metal sheet 2a has only the cantilever 22 located directly above the space Q. That is, the highest point of the sidewall 23 is not connected to anything. In this embodiment, the height of the rear wall 21 is not greater than the height of the highest point of the sidewall 23 to reduce the overall height of the metal sheet 2a. The sidewall 23 is located on the side of the first wall 111 facing away from the second wall 112. The locking part 24 is bent from the upper end of the sidewall 23 away from the second wall 112. The locking part 24 is located below the locking part 114 and is locked to the locking part 114. Pressing the first wall 111 inward causes the free end of the first wall 111 to displace inward, allowing the locking part 24 to disengage from the locking part 114.

[0037] like Figure 10 As shown, in other embodiments, the pressed element 200 is a flexible circuit board. When the circuit board 300 is equipped with multiple pressing devices 100, and two adjacent pressing devices 100 are too close together to press the free end of the side wall 11 by hand, the pressing device 100 of the present invention may further include a pull ring 3. The pull ring 3 includes a pull strap 31 and a collar 32 connected to each other. The pull strap 31 is connected to the free end of the side wall 11. An extension L is connected to both side walls 23. The side wall 11 extends forward beyond the extension L and the extension L is located directly above the side wall 11. By pulling the collar 32 upward, an upward force is applied to the side wall 11, thereby causing the locked part 24 to disengage from the locking part 114 and opening the pressing member 2.

[0038] like Figures 11 to 14 The image shows a second embodiment of the crimping device 100 of the present invention.

[0039] like Figure 11 and Figure 12 As shown, the crimping device 100 includes a fixed base 1 and a pressing member 2, the pressing member 2 being pivotally connected to the fixed base 1. The fixed base 1 includes a metal body 1a and a plastic positioning member 1b injection molded with the metal body 1a, the metal body 1a being welded and fixed to the circuit board 300.

[0040] like Figure 12 and Figure 13 As shown, the metal body 1a is integrally formed from a metal sheet and includes two side walls 11 arranged opposite each other, a bottom wall 12 connecting the two side walls 11, two pivot parts 13 connecting the bottom wall 12, and multiple fixing parts 14. The bottom wall 12 is hollowed out in the middle to form a closed hollow structure, and its surface extends horizontally. The bottom wall 12 is located below the pressing member 2. The two side walls 11 are located on the left and right sides of the bottom wall 12 and are formed by bending upward from the left and right sides of the bottom wall 12 respectively. The side walls 11 are elastic arms and can undergo corresponding elastic deformation when subjected to force in the left-right direction X. A locking part 114 is protruding on the side of each side wall 11 that is away from each other. The locking part 114 is used to engage with the pressing member 2.

[0041] like Figure 12 and Figure 13 As shown, the two pivot portions 13 are aligned and spaced apart along the left-right direction X. Each pivot portion 13 is connected to the bottom wall 12. The pivot portions 13 are used to pivotally connect to the pressing member 2, allowing the pressing member 2 to rotate up and down to achieve the opening and closing functions. Multiple fixing portions 14 are welded and fixed to the circuit board 300.

[0042] like Figure 12 and Figure 13 As shown, the plastic positioning component 1b is integrally molded from plastic material and injection molded onto the bottom wall 12. The plastic positioning component 1b forms a closed and vertically open receiving cavity K, in which the pressed element 200 is received along the vertical direction. The four inner surfaces of the receiving cavity K are used to stop the pressed element 200 and limit its excessive displacement in the left-right direction X and the front-back direction Y. The two side walls 11 along the left-right direction X are located outside the plastic positioning component 1b.

[0043] like Figure 12 As shown, the pressing component 2 includes a metal sheet 2a, two plastic shafts 2b, a plastic rod 2c integrally formed with the two plastic shafts 2b, and a plastic operating part 2d. The two plastic shafts 2b and the plastic rod 2c are injection molded onto the metal sheet 2a.

[0044] like Figure 12 and Figure 14 As shown, the metal sheet 2a includes a rear wall 21, two cantilever arms 22, two side walls 23 arranged opposite to each other, two clamping portions 24, a top wall 29 that bends forward from the upper end of the rear wall 21 and then extends horizontally forward, two through slots 20, a connecting section T, and two clearance slots P arranged opposite to each other. The two through slots 20 are spaced apart in the left-right direction and penetrate the top wall 29 vertically. The top wall 29 connects the two side walls 23. The connecting section T is located in front of the two through slots 20 and connects the two through slots 20. The plastic operating part 2d is injection molded into the connecting section T.

[0045] like Figure 12 and Figure 14 As shown, the rear wall 21 is located above the bottom wall 12 and perpendicular to it. The rear wall 21 has a front surface 211 and a rear surface 212 arranged opposite to each other, a bottom surface 213 connecting the front surface 211 and the rear surface 212 along the front-rear direction Y, and two receiving grooves 214. The plastic rod 2c is arranged vertically and vertically with the fixing base 1 and is attached to the front surface 211 and the rear surface 212. The rear surface of the plastic rod 2c is flat and higher than the plastic shaft 2b. The plastic rod 2c is higher than the receiving groove 214 and partially enters the receiving groove 214.

[0046] like Figure 12 and Figure 14 As shown, the receiving groove 214 extends through the front surface 211 and the rear surface 212. The two receiving grooves 214 are spaced apart from each other and are correspondingly arranged with the two plastic shafts 2b. The plastic shafts 2b pass through the receiving grooves 214 and are injection molded to the rear wall 21. Each pivot part 13 passes through the corresponding receiving groove 214 from back to front and is partially received in the receiving groove 214 so that the plastic shaft 2b is pivotally connected to the pivot part 13.

[0047] like Figure 12 and Figure 14 As shown, the plastic shaft 2b includes a first portion 25 attached to the front surface 211, a second portion 26 attached to the rear surface 212, a third portion 27 extending through the receiving groove 214 in the front-rear direction Y and connected to the first portion 25 and the second portion 26 as a whole, and a fourth portion 28 located directly below the third portion 27. The fourth portion 28 is connected to the first portion 25 and the second portion 26 in the front-rear direction Y, thereby enhancing the connection strength between the plastic shaft 2b and the rear wall 21.

[0048] like Figure 12 and Figure 13 As shown, the two cantilever arms 22 are spaced apart in the left-right direction and are connected to the two through slots 20 one by one. Each cantilever arm 22 includes a connecting section 221 and a pressing part 222. The connecting section 221 connects the top wall 29 and the corresponding pressing part 222. The pressing part 222 protrudes downward from the top wall 29. The metal sheet 2a can rotate up and down relative to the fixed base 1. When the metal sheet 2a is engaged, the pressing part 222 is used to press down on the pressed element 200.

[0049] like Figure 12 and Figure 13 As shown, the clearance grooves P are located on the left and right sides of the receiving cavity K along the left and right directions, and each clearance groove P penetrates the side wall 23 from left to right and the top wall 29 from top to bottom. The two clearance grooves P are closer to the connecting section T relative to the rear wall 21 in the front-back direction Y. The bottom edge of the clearance groove P forms the locked part 24. The engaging part 114 is located above the locked part 24 and engages with the locked part 24. The side wall 11 protrudes upward from the clearance grooves P. When the side wall 11 is pressed inward, and the engaging part 114 disengages from engaging the locked part 24, the top wall 29 prevents the side wall 11 from moving excessively inward.

[0050] In summary, the crimping device of the present invention has the following beneficial effects: 1. By injection molding the plastic shaft 2b onto the rear wall 21, attaching the first part 25 to the front surface 211, attaching the second part 26 to the rear surface 212, and the third part 27 passing through the receiving groove 214 to be integrated with the first part 25 and the second part 26, the connection between the plastic shaft 2b and the rear wall 21 is strengthened, thereby increasing the overall strength of the plastic shaft 2b (including a portion of the rear wall 21) and making it less prone to breakage; the pivot part 13 is at least partially received in the receiving groove 214, so that the rear wall 21 does not need to have a separate groove for receiving the pivot part 13, thereby enhancing the structural strength of the rear wall 21 and simplifying the molding process of the metal sheet 2a.

[0051] 2. The cantilever 22 is formed by bending and shaping, and the pressing part 222 is provided on the cantilever 22, which reduces the height, saves space, simplifies manufacturing, and saves costs.

[0052] 3. Since the pressing device 100 is designed to save space, the height of the rear wall 21 is usually designed to be relatively low. The maximum size of the bend where the connecting section 221 connects to the rear wall 21 is set to be less than the minimum distance between the two receiving grooves 214. If the receiving groove 214 is provided at the bend of the connecting section 221, it will affect the structural strength of the connection between the connecting section 221 and the rear wall 21. The weak strength of this part may cause damage to the cantilever 22 structure, thereby affecting the pressing function of the pressing part 222.

[0053] 4. The fourth part 28 connects the first part 25 and the second part 26 along the front-back direction Y and is attached upward to the rear wall 21, further strengthening the structural strength of the plastic shaft 2b and the rear wall 21.

[0054] 5. A first groove 215 is provided directly below the receiving groove 214 and spaced apart from it, providing an injection flow channel for the plastic shaft 2b to be injection molded into the rear wall 21, which is beneficial for the fourth part 28 to fill the first groove 215, and also increases the plastic content of the plastic shaft 2b.

[0055] 6. The plastic rod 2c is integrally formed with the two plastic shafts 2b and is attached to the front surface 211 and / or the rear surface 212. The structural strength of the plastic shafts 2b is improved and they are not easy to break. The plastic rod 2c is spaced apart from the fixed seat 1 to ensure that the plastic rod 2c does not stick to the fixed seat 1 and does not hinder the pivoting function of the plastic shafts 2b.

[0056] 7. By setting the plastic positioning member 1b and the stop surface 15 on the plastic positioning member 1b, the excessive displacement of the pressed element 200 in the left-right direction X is restricted. The first stop part 16 and the second stop part 17 are set to restrict the excessive displacement of the pressed element 200 in the front-back direction Y. At the same time, the material of the plastic positioning member 1b is softer than metal, so it is not easy to scratch the pressed element 200.

[0057] 8. The first stop portion 16 is completely offset from the pivot portion 13 in the front-rear direction Y, which is equivalent to providing room for the pivot portion 13 and avoiding interference or friction between the pivot portion 13 and the first stop portion 16.

[0058] 9. The side wall 11 includes a first wall 111 and a second wall 112. The second wall 112 is disposed inside the first wall 111 to prevent the first wall 111 from being excessively displaced inward when the first wall 111 is pressed inward.

[0059] 10. The plastic positioning part 1b is injection molded onto the bent portion 113 to strengthen the bending portion 113.

[0060] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A crimping device for pressing a component to be crimped, characterized in that, include: A fixed base with a pivot joint; A pressing component includes a metal sheet and a plastic shaft corresponding to the pivot portion. The plastic shaft is injection molded onto the metal sheet. The metal sheet is bent from a metal plate and has a rear wall and a pressing portion. The rear wall has a front surface and a rear surface arranged opposite each other, and a receiving groove that passes through the front surface and the rear surface and corresponds to the plastic shaft. The pressing portion is located in front of the rear wall. The plastic shaft includes a first portion attached to the front surface, a second portion attached to the rear surface, and a third portion that passes through the receiving groove in the front-rear direction and is integrally connected to the first portion and the second portion. The pivot portion is at least partially received in the receiving groove so that the plastic shaft is pivotally connected to the pivot portion, thereby allowing the metal sheet to rotate up and down relative to the fixing seat. When the metal sheet is engaged, the pressing portion is used to press down on the pressed component.

2. The crimping device according to claim 1, characterized in that: The rear wall bends forward from both the left and right ends to form a side wall, and the rear wall and the side walls enclose a space; a cantilever is formed by bending forward from the rear wall, and the cantilever has the pressing part, and the metal sheet is located only above the space by the cantilever.

3. The crimping device according to claim 2, characterized in that: The cantilever has the pressing part, and there are two receiving slots. The two receiving slots are spaced apart from each other on the left and right. The bend where the cantilever connects to the rear wall is located between the two receiving slots. The maximum dimension of the bend where the cantilever connects to the rear wall in the left and right direction is less than the minimum distance between the two receiving slots, and the width of the bend where the cantilever connects to the rear wall is less than the width of the pressing part.

4. The crimping device according to claim 1, characterized in that: A plastic operating part is injection molded onto the metal sheet and located above the element being pressed. By pressing the plastic operating part, the metal sheet is rotated downward relative to the fixing seat and engages with the fixing seat.

5. The crimping device according to claim 4, characterized in that: The metal sheet includes a top wall that bends forward from the upper end of the rear wall and extends horizontally forward, two through slots, cantilever arms that are connected to the through slots one by one, and a connecting part located in front of the two through slots and connecting the two through slots. The cantilever arm has the pressing part and the pressing part protrudes downward from the top wall. The plastic operating part is injection molded into the connecting part.

6. The crimping device according to claim 1, characterized in that: The rear wall bends forward from both ends to form two side walls, and an extension connects the two side walls. The fixing seat includes two side walls arranged opposite each other, with the side walls located inside the side walls. The side walls extend forward beyond the extension and the extension is located directly above the side walls. The side walls bend towards the side walls to form a locking part, and the side walls bend away from the side walls to form a locked part. The locked part is located below the locking part and locked to the locking part. A pull ring connects to the front end of the two side walls. Pulling the pull ring upward causes the locked part to move upward and disengage from the locking part.

7. The crimping device according to claim 1, characterized in that: The rear wall has two receiving grooves, which are spaced apart from each other. The pressing component includes two plastic shafts that correspond one-to-one with the two receiving grooves and a plastic rod integrally formed with the two plastic shafts. The plastic rod is spaced apart vertically from the fixing seat and is attached to the front surface and the rear surface. The rear surface of the plastic rod is flat and higher than the plastic shafts.

8. The crimping device according to claim 7, characterized in that: The plastic rod is higher than the receiving groove and partially enters the receiving groove.

9. The crimping device according to claim 1, characterized in that: The fixing base includes a metal body and a plastic positioning component injection molded on the metal body. The metal body includes two side walls arranged opposite to each other and a bottom wall connecting the two side walls. The pivot portion connects to the bottom wall, and the bottom wall is located below the rear wall. The plastic positioning component surrounds a vertically penetrating receiving cavity for receiving the pressed element. The plastic positioning component includes a stop surface that is closer to the pressed element in the left-right direction relative to the side walls, a first stop portion located behind the pressed element, and a second stop portion located in front of the pressed element. The stop surface is used to limit excessive displacement of the pressed element in the left-right direction, and the first stop portion and the second stop portion are used to prevent excessive displacement of the pressed element in the front-back direction.

10. The crimping device according to claim 9, characterized in that: The plastic positioning component includes two parts that are separated from each other on the left and right sides, and the first stop part is completely offset from the pivot part in the front-back direction.

11. The crimping device according to claim 9, characterized in that: The sidewall includes a first wall and a second wall arranged opposite to each other on the left and right sides. The second wall is located inside the first wall. The first wall is bent away from the second wall to form a locking part. The metal sheet has a side wall on each of its left and right sides. The side wall is located on the side of the first wall away from the second wall. The side wall is bent away from the second wall to form a locking part. The locking part is located below the locking part and is locked to the locking part. When the first wall is pressed inward, the locking part disengages from the locking part, and the second wall prevents the first wall from moving inward excessively.

12. The crimping device according to claim 11, characterized in that: A bend connects the first wall and the second wall, and the plastic positioning component is injection molded into the bend.

13. The crimping device according to claim 1, characterized in that: The fixing base includes two side walls arranged opposite to each other and a bottom wall connecting the two side walls. The pivot part connects to the bottom wall, and the bottom wall is located below the rear wall. Two engaging parts protrude from the opposite sides of the two side walls. The metal sheet includes two side walls arranged opposite to each other, a top wall that bends forward from the upper end of the rear wall and extends horizontally forward, and two clearance grooves arranged opposite to each other. The top wall connects the two side walls. The clearance grooves penetrate the side walls in the left-right direction and penetrate the top wall vertically. The bottom edge of the clearance groove forms a locked part. The engaging part is located above the locked part and engages with the locked part. The side wall protrudes upward from the clearance groove. When the side wall is pressed inward, and the engaging part disengages from the locked part, the top wall prevents the side wall from moving excessively inward.

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