Crimp insert replacement structure for parallel crimping pliers

Abstract

The present invention relates to a crimping die replacement structure for parallel crimping pliers, comprising: a first press-connection assembly having a first handle portion and a press-connection portion, the press-connection portion being provided with a press-connection opening; a second press-connection assembly comprising a pivot member and a second handle portion, the upper end of the second handle portion being disposed in the interior and pivotally connected to the press-connection portion and one end of the pivot member, respectively; a crimping assembly comprising an upper crimping member and a lower crimping member, the upper crimping member being fixed above the press-connection opening and the lower crimping member being pivotally connected to the other end of the pivot member and located below the press-connection opening; a crimping die assembly connected to the crimping assembly;a crimp die ejection assembly comprising a crimp die ejection block, the crimp die ejection block being movably disposed within the interior of the press-fit portion and abutting one end of the crimp die assembly. By pressing the crimp die ejection block, the crimp die ejection block can drive the crimp die assembly toward the press-fit opening of the press-fit portion, allowing it to be easily removed and replaced.

Description

The present invention relates to the field of terminal crimping tools and, more particularly, to a crimp insert replacement structure for parallel crimping pliers.Crimping tongs use mainly the crimping block of the jaws for crimping terminals and wires, whereby the wires are connected to the terminals. Terminals, however, have different specifications that are used to accommodate different wires for different electrical devices. Therefore, the crimping block of the crimping pliers must be replaceable in order to be able to be used for terminals of different specifications.It is the main object of the present invention to provide a crimp bit replacement structure for parallel crimping pliers, with which, in accordance with terminals of different specifications, the crimp bit assembly can be replaced quickly and easily by pressing with one hand, the terminals are crimped uniformly and in parallel up and down to avoid asymmetry or deformation of the terminals and improve working efficiency. FIG. 1 is an exploded view according to the present invention; FIG. 2 is a perspective view according to the present invention; FIG. 3 is a sectional view according to the present invention; FIG. 4 shows a sectional view along the section line IV-IV according to FIG. 3 ; FIG. 5 shows a sectional view of the actuation according to FIG. 4 ; FIG. 6 is a sectional view showing the operation of the crimping assembly; FIG. 7 is a sectional view showing the operation of the crimp bit assembly.The present invention relates to a crimp insert replacement structure for parallel crimp pliers, which is for crimping terminals and wires, and comprises:a first press-connection assembly 1 having a first grip portion 10 and a press-connection portion 11 provided at the upper end of the first grip portion 10, the press-connection portion 11 having an internal space 110 and including a press-connection hole 111, a first clamping hole 112, a slide hole 113, a first restricting hole 114, a first fixing hole 115, a second fixing hole 116, and a first rod 117 continuously connected to the internal space 110; a second press-connection assembly 2 comprising a pivot member 20 and a second grip portion 21, the pivot member 20 having a first pivot end 200 and a second pivot end 201, the second pivot end 201 being pressed against the first clamping hole 112 of the press-connection portion 11 by the clamping piece 22, and the upper end of the second grip portion 21 being inserted into the interior space 110 and pivotally connected to the press-connection portion 11 and the first pivot end 200 of the pivot member 20, respectively; a transmission assembly 3 comprising a guide piece 30, a locking disk 31, a locking piece 32, and a reset member 33, wherein the guide piece 30 is disposed on the first grip portion 10 and adjacent to the press-connection portion 11, the locking disk 31 has a guide hole 310, a release notch 311, and a one-way ratchet 312, one end of the locking disk 31 is fixedly connected to the second grip portion 21, and the other end is passed through the guide piece 30 via the guide hole 310, the locking piece 32 is pivotally disposed on the first grip portion 10 via a pivot link 34, and has a locking portion 320 corresponding to the one-way ratchet 312 of the locking disk 31 at one end, one end of the reset member 33 is fixed to the first grip portion 10, and the other end is connected to the pivot link 34, and the reset member 33 gives a reset capability to the locking piece 32; a crimping assembly 4 disposed in the inner space 110 of the press-connection portion 11 and comprising an upper crimping member 40 and a lower crimping member 41, wherein the upper crimping member 40 has an upper accommodation space 400, a fixing portion 401, a third fixing hole 402, and a stopper portion 403, the fixing portion 401 is fixed in the first fixing hole 115 of the press-connection portion 11, the third fixing hole 402 corresponds to the second fixing hole 116 of the press-connection portion 11, and for fixing the upper crimping member 40 above the press-connection hole 111, the fixing member 42 is passed through the third fixing hole, wherein the lower crimping member 41 comprises a lower accommodation space 410, a second restricting hole 411, a second clamping hole 412, and a second rod 413, the second limiting hole 411 corresponds to the first limiting hole 114 of the press-connection portion 11 and the limiting member 43 is passed through both of them, the second clamping hole 412 corresponds to the first clamping hole 112 of the press-connection portion 11 and the clamping piece 22 is passed through both of them, and an elastic crimping member 44 is disposed between the second rod 413 and the first rod 117; an upper quick clamping assembly 5 disposed in the upper receiving space 400 of the upper crimping member 40 and including an upper fixing seat 50, an upper elastic piece 51 and an upper movable ball 52, the upper elastic piece 51 being accommodated in the upper fixing seat 50 and being connected at the top to the upper movable ball 52; a lower quick-action clamp assembly 6 disposed in the lower accommodation space 410 of the lower crimping member 41 and comprising a lower fixing seat 60, a lower elastic piece 61 and a lower movable ball 62, the lower elastic piece 61 being accommodated in the lower fixing seat 60 and being connected at the top to the lower movable ball 62; a crimp bit assembly 7 comprising an upper crimp bit 70 and a lower crimp bit 71 matched thereto, the upper crimp bit 70 having an upper engagement slot 700 and the lower crimp bit 71 having a lower engagement slot 710, the upper engagement slot 700 being engaged with the upper movable ball 52 of the upper quick release assembly 5, whereby the upper crimp bit 70 is connected to the upper crimp member 40 and is located above the press connection opening 111, the lower engagement slot 710 being engaged with the lower movable ball 62 of the lower quick release assembly 6, whereby the lower crimp bit 71 is connected to the lower crimp member 41 and is located below the press connection opening 111; a crimp cartridge ejection assembly 8 comprising a crimp cartridge ejection block 80, a slide block 81, and a crimp cartridge elastic ejection piece 82, wherein two sides of the crimp cartridge ejection block 80 are each provided with a slide recess 800, the two ends of the crimp cartridge ejection block are each used as an abutting end 801 and a pushing end 802, the slide block 81 is provided with a slide protrusion 810, the slide protrusion 810 is passed through the slide hole 113 of the press-connection portion 11 and abuts against the slide recess 800 of the crimp cartridge ejection block 80, the crimp cartridge elastic ejection piece 82 is accommodated in the slide recess 800 of the crimp cartridge ejection block 80, and one end of the crimp cartridge elastic ejection piece abuts against the abutting portion 403 of the upper crimp member 40. In this way, the crimp cartridge ejection block 80 is restricted by the slide block 81 inside the inner space 110 of the press-connection portion 11 and abuts the press-connection opening 111, the abutting end 801 of the crimp cartridge ejection block 80 abuts the ends of the upper crimp cartridge 70 and the lower crimp cartridge 71, the pushing end 802 is exposed outside the press-connection portion 11, and the crimp cartridge elastic ejection piece 82 is movable leftward and rightward together with the crimp cartridge ejection block 80 to achieve a compression state or a release state.In use, a clamp (not shown) is inserted into the press-connection hole 111 with the second grip portion 21 being pressed to pivot toward the first grip portion 10 and drive the lock disk 31 to move synchronously, and at the same time, one-way locking is effected by the one-way ratchet 312 of the lock disk 31 and the lock portion 320 of the lock piece 32 to prevent the lock disk 31 from being reset. At the same time, the elastic crimping member 44 is in a compressed state, the first pivoting end 200 of the pivoting member 20 is pivoted downward and the second pivoting end 201 is pivoted upward to drive the clamping piece 22 to be moved upward in the first clamping hole 112 of the lower crimping member 41, whereby the lower crimping insert 71 is synchronously moved upward and parallel by the drive of the lower crimping member 41 (as shown in FIG. 6 ). After the diameter of the press-connection hole 111 is reduced, the upper crimping insert 70 and the lower crimping insert 71 are used for crimping the terminal. When the crimping operation is completed, the release notch 311 of the lock washer 31 is in contact with the lock portion 320 of the lock piece 32, thereby restoring the lock washer 31 in the reverse direction. At this time, the second grip portion 21 is released. The lower crimping member 41 is pressed by the elastic release of the elastic crimping member 44 to be moved downward in parallel, so that the diameter of the press-connection hole 111 is increased, and thus the finally crimped terminal can be taken out for the next crimping operation. In this way, the both ends of a terminal can be crimped smoothly by moving the lower crimping member 41 upward and downward in parallel by pressing the second grip portion 21 to avoid asymmetry or deformation of the terminal.Since the one-way ratchet 312 of the locking disk 31 and the locking portion 320 of the locking piece 32 form a one-way gear structure, before the release notch 311 of the locking disk 31 and the locking portion 320 of the locking piece 32 are brought into contact with each other, the locking disk 31 can be pivoted only toward the first grip portion 10. When the crimping operation is completed, the release notch 311 of the lock washer 31 is moved to be in contact with the lock portion 320 of the lock piece 32. At this time, the locking relationship between the locking disk 31 and the locking piece 32 is canceled, so that the locking disk 31 can be reset in the reverse direction. In other words, incomplete crimping can be avoided by the transmission assembly 3. Moreover, vibration and imbalance during the parallel upward and downward movement of the lower crimping member 41 can be prevented by restricting the restricting member 43 within the first restricting hole 114.Reference is made to FIG. 7. When the upper crimp bit 70 and the lower crimp bit 71 are to be replaced for crimping terminals of different specifications, the pushing end 802 of the crimp bit ejection block 80 is pushed. The upper crimp bit 70 and the lower crimp bit 71 are simultaneously driven to move toward the press-connection opening 111 of the press-connection portion 11 by the abutting end 801 of the crimp bit ejection block 80. Once a part of the surface of the upper crimping insert 70 and a part of the surface of the lower crimping insert 71 are moved to the outside of the press-connection hole 111, they can be removed and replaced. During the movement of the upper crimping insert 70 and the lower crimping insert 71 to the outside of the press-connection hole 111, the upper engagement slot 700 and the lower engagement slot 710 are quickly separated from the upper movable ball 52 and the lower movable ball 62, respectively, by the elastic release of the upper elastic piece 51 and the lower elastic piece 61 to achieve the advantageous effect of quickly exchanging the crimping insert assembly 7.List of reference characters1 First press-connection assembly 10 First grip portion 11 Press-connection portion 110 Inner space 111 Press-connection opening 112 First clamping hole 113 Slide hole 114 First limiting hole 115 First fastening hole 116 Second fastening hole 117 First rod 2 Second press-connection assembly 20 Pivot member 200 First pivot end 201 Second pivot end 21 Second grip portion 22 Clamping piece 3 Transmission assembly 30 Guide piece 31 Locking washer 310 Guide hole 311 Release notch 312 One-way ratchet 32 Locking piece 320 Locking portion 33 Reset member 34 Pivot connection piece 4 Crimping assembly 40 Upper crimping member 400 Upper receiving space 401 Fastening portion 402 Third fastening hole 403 Stopper portion 41 Lower crimping member 410 Lower receiving space 411 Second limiting hole 412 Second clamping hole 413 Second rod 42 Fastening member 43 Limiting member 44 Elastic crimping member 5 Upper quick-clamping assembly 50 Upper fastening seat 51 Upper elastic piece 52 Upper Movable ball 6 Lower quick-action clamp assembly 60 Lower fixing seat 61 Lower elastic piece 62 Lower movable ball 7 Crimp Insert assembly 70 Upper crimp insert 700 Upper engagement slot 71 Lower crimp insert 710 Lower engagement slot 8 Crimp insert ejector assembly 80 Crimp insert ejector block 800 Slide recess 801 Abutting end 802 Pushing end 81 Slide block 810 Slide protrusion 82 Crimp insert elastic ejector piece

Claims

A crimp insert replacement structure for parallel crimp pliers, comprising: a first press-connection assembly (1) having a first grip portion (10) and a press-connection portion (11) provided at the upper end of the first grip portion (10), the press-connection portion (11) having an inner space (110) and a press-connection opening (111) continuously connected to the inner space (110); a second press-connection assembly (2) comprising a second grip portion (21) and a pivot member (20), wherein an end of the second grip portion (21) is pivotally connected to the inner space (110) of the press-connection portion (11) and the upper end is pivotally connected to an end of the pivot member (20); a crimping assembly (4) disposed in the inner space (110) of the press-connection portion (11) and comprising an upper crimping member (40) and a lower crimping member (41), the upper crimping member (40) being disposed above the press-connection opening (111) and the lower crimping member (41) being pivotally connected to the other end of the pivoting member (20) and movably disposed below the press-connection opening (111); a crimping insert ejecting assembly (8) comprising a crimping insert ejecting block (80), the crimping insert ejecting block (80) being disposed in the inner space (110) of the press-connection portion (11) and being movable leftward and rightward.The crimp cartridge replacement structure for parallel crimp pliers according to claim 1, wherein the press-connection portion (1) further comprises a slide hole (113) continuously connected to the internal space (110), and the crimp cartridge ejection assembly (8) further comprises a slide block (81), the slide block (81) comprises a slide protrusion (810) corresponding to the slide protrusion (810) of the slide block (81), the crimp cartridge ejection block (80) comprises a slide recess (800) on two sides, respectively, and the slide protrusion (810) of the slide block (81) is passed through the slide hole (113) and abuts against the slide recess (800).The crimp cartridge replacement structure for parallel crimp pliers according to claim 2, wherein the upper crimp member (40) further comprises a stopper portion (403), and the crimp cartridge ejection assembly (8) further comprises an elastic crimp cartridge ejection piece (82), the elastic crimp cartridge ejection piece (82) being accommodated in the slide recess (800) of the crimp cartridge ejection block (80), and an end thereof abutting against the stopper portion (403) of the upper crimp member (40).The crimp cartridge replacement structure for parallel crimp pliers according to any one of the preceding claims, further comprising a crimp cartridge assembly (7), the crimp cartridge assembly (7) is connected to the crimp assembly (4) and a part of its surface is exposed in the press connection opening (111) of the press connection portion (11), wherein the crimp cartridge assembly (7) comprises an upper crimp cartridge (70) and a lower crimp cartridge (71) matched thereto, the upper crimp cartridge (70) and the lower crimp cartridge (71) are respectively disposed above and below the press connection opening (111), the two ends of the crimp cartridge ejection block (80) respectively serve as an abutting end (801) and a pressing end (802), the abutting end (801) abuts simultaneously on an end of the upper crimp bit (70) and the lower crimp bit (71) of the crimp bit assembly (7) and the pressing end (802) is exposed outside the press-connection portion (11).The crimp insert replacement structure for parallel crimp pliers according to claim 4, further comprising an upper quick clamping assembly (5) and a lower quick clamping assembly (6), wherein the upper quick clamping assembly (5) comprises an upper fixing seat (50), an upper elastic piece (51), and an upper movable ball (52), and the upper elastic piece (51) is accommodated in the upper fixing seat (50) and connected at the top to the upper movable ball (52), wherein the lower quick clamping assembly (6) comprises a lower fixing seat (60), a lower elastic piece (61), and a lower movable ball (62), and the lower elastic piece (61) is accommodated in the lower fixing seat (60) and connected at the top to the lower movable ball (62), wherein the upper crimping element (40) and the lower crimping element (41) further each have an upper receiving space (400) and a lower receiving space (410), respectively, and the upper receiving space (400) and the lower receiving space (410) each serve to receive the upper quick clamping assembly (5) and the lower quick clamping assembly (6), respectively, wherein the upper crimping insert (70) has an upper engagement slot (700), the upper engagement slot (700) and the upper movable ball (52) are engaged with each other, the lower crimping insert (71) has a lower engagement slot (710), and the lower engagement slot (710) and the lower movable ball (62) are engaged with each other.The crimp insert replacement structure for parallel crimping pliers according to any one of the preceding claims, wherein the press-connection portion (11) further includes a first clamping hole (112) continuously connected to the internal space (110), the pivoting member (20) includes a first pivoting end (200) and a second pivoting end (201), the lower crimping member (41) includes a second clamping hole (412) corresponding to the first clamping hole (112), the first pivoting end (200) of the pivoting member (20) is pivotally connected to the upper end of the second grip portion (21), and the second pivoting end (201) and the second clamping hole (412) are pressed together by the clamping piece (22) against the first clamping hole (112).The crimp insert replacement structure for parallel crimp pliers according to any one of the preceding claims, wherein the press-connection portion (11) further includes a first fastening hole (115) and a second fastening hole (116) continuously connected to the inner space (110), wherein the upper crimp member (40) further includes a fastening portion (401) and a third fastening hole (402), the fastening portion (401) is fastened in the first fastening hole (115), and the third fastening hole (402) corresponds to and serves to pass through the second fastening hole (116).The crimp insert replacement structure for parallel crimping pliers according to any one of the preceding claims, wherein the press-connecting portion (11) further includes a first restricting hole (114) continuously connected to the internal space (110), and the lower crimping member (41) further includes a second restricting hole (411), the first restricting hole (114) corresponding to the second restricting hole (411) and serving to pass the restricting member (43) therethrough.The crimp insert replacement structure for parallel crimp pliers according to any one of the preceding claims, wherein the press-connection portion (11) further comprises a first rod (117) continuously connected to the inner space (110), and the lower crimping member (41) further comprises a second rod (413), wherein an elastic crimping member (44) is disposed between and connected to the first rod (117) and the second rod (413).The crimp insert replacement structure for parallel crimp pliers according to any one of the preceding claims, further comprising a transmission assembly (3), wherein the transmission assembly (3) comprises a guide piece (30), a locking washer (31), a locking piece (32), and a restoring member (33), the guide piece (30) is disposed on the first grip portion (10) and is adjacent to the press-connection portion (11), the locking washer (31) has a guide hole (310), a release notch (311), and a one-way ratchet (312), one end of the locking washer (31) is firmly connected to the second grip portion (21), the guide piece (30) is passed through the guide hole (310) provided at the other end of the locking washer, the blocking piece (32) is arranged pivotably on the first grip section (10) by means of a pivot connection piece (34), and one end of the blocking piece has a blocking section (320) matched to the disposable ratchet (312) of the blocking disk (31), and one end of the restoring element (33) is fastened to the first grip section (10) and the other end is connected to the pivot connection piece (34).

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