CN218828356U

CN218828356U - Crimping tool bit for connecting miniature terminal and wire conductor

Info

Publication number: CN218828356U
Application number: CN202320139775.1U
Authority: CN
Inventors: 盛春江; 周鑫; 吕培松
Original assignee: Suzhou Guanyunwei Electronic Technology Co ltd
Current assignee: Suzhou Guanyunwei Electronic Technology Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-04-07
Anticipated expiration: 2033-01-17

Abstract

The utility model discloses a crimping tool bit that is used for miniature terminal to be connected with the wire rod conductor. The crimping tool bit for connecting the miniature terminal and the wire conductor comprises an upper tool and a lower tool, wherein the upper tool comprises a first main body and a first tool bit, a first groove for pressing the terminal is formed in the first tool bit, the inner wall of the groove bottom of the first groove is connected with a first side face of the first tool bit through a first chamfer part, and the lower tool comprises a second main body and a second tool bit. The embodiment of the utility model provides a pair of a crimping tool bit for miniature terminal is connected with the wire rod conductor can avoid terminal substrate's unusual deformation and tear and wire rod conductor damage, and upper slitter, lower slitter destroy substrate and conductor when avoiding the crimping to guarantee that the terminal reaches the best with the electrical property that switches on with the drawing force that the wire rod is connected.

Description

A crimping tool bit that is used for miniature terminal to be connected with wire conductor

Technical Field

The utility model relates to a crimping mould, in particular to crimping tool bit that is used for miniature terminal to be connected with the wire rod conductor.

Background

Crimping is a process of applying pressure to the contact area of a wire and a terminal to form the wire and the terminal so as to realize tight connection.

The edges of upper and lower riveting knife edges for crimping a miniature terminal and a core wire conductor are sharp at present, a larger shearing force acts on a terminal wrapping cylinder base material when the upper and lower knives are pressed, so that the core wire is subjected to a cutting force, and the 28 AWG-32 AWG wire core wire is formed by twisting 7 or 18 copper wires, even if the shearing force born by each wire with the diameter of about 0.127mm formed by 7 copper wires is about 0.5N, the crimping knife structure has the risk of damaging the terminal base material and the core wire conductor when in actual crimping, and the adverse effects on the binding force and the electric connection performance of the terminal and the conductor can be influenced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a crimping tool bit for connecting a miniature terminal to a wire conductor, for solving the above-mentioned problems.

For realizing the purpose of the utility model, the utility model discloses a technical scheme include:

the embodiment of the utility model provides a crimping tool bit that is used for miniature terminal and wire rod conductor to be connected, include: the upper cutter comprises a first main body and a first cutter head, a first groove for pressing a terminal is formed in the first cutter head, the inner wall of the groove bottom of the first groove is connected with the first side face of the first cutter head through a first chamfer, the lower cutter comprises a second main body and a second cutter head, a second groove matched with the crimping terminal is formed in the second cutter head, and the inner wall of the groove bottom of the second groove is connected with the first side face and/or the second side face of the second cutter head through a second chamfer.

Compared with the prior art, the utility model has the advantages that: the embodiment of the utility model provides a pair of a crimping tool bit that is used for miniature terminal to be connected with wire conductor is when the crimping, can avoid terminal substrate's unusual deformation and tear and wire conductor damage, goes up sword, lower sword and destroys substrate and conductor when avoiding the crimping to effectively guarantee that miniature terminal is qualified with the wire rod joint force and be connected electrical property best.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a crimping tool bit for connecting a micro terminal with a wire conductor according to an exemplary embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a side cross-sectional view of FIG. 1;

FIG. 4 is an enlarged partial schematic view at B of FIG. 3;

fig. 5 is a schematic perspective view of a crimping tool bit for connecting a micro terminal to a wire conductor according to an exemplary embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view at C of FIG. 5;

description of reference numerals:

1. feeding a cutter; 11. a first body; 12. a first cutter head; 121. a first groove; 122. a first chamfered portion; 123. an arc-shaped surface; 2. cutting; 21. a second body; 22. a second cutter head; 221. a second groove; 222. a second chamfered portion; 3. identifying a structure; 4. a terminal; 41. a crimping zone.

Detailed Description

In view of the deficiencies in the prior art, the inventor of the present invention has made extensive studies and practices to provide the technical solution of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.

The embodiment of the utility model provides a crimping tool bit that is used for miniature terminal and wire conductor to be connected, including last sword and lower sword, it includes first main part and first tool bit to go up the sword, be provided with the first groove that is used for the terminal of impressing on the first tool bit, the inner wall of the tank bottom of first groove through a first chamfer with the first side of first tool bit links to each other, the lower sword includes second main part and second tool bit, be provided with on the second tool bit with the second groove of first groove cooperation crimping terminal, the inner wall of the tank bottom of second groove through a second chamfer with the first side and/or the second side of second tool bit link to each other.

In some more specific embodiments, the first chamfer portion is formed protruding from the first cutting tip.

In some more specific embodiments, the first chamfer is further connected to the second side surface of the first insert.

In some more specific embodiments, the first chamfer portion is formed protruding from the first cutting head; the first chamfered portion is also connected to the second side surface of the first chip.

In some more specific embodiments, the first groove has a width L1 along the first direction, the second groove has a width L2 along the first direction, and L1 is equal to or less than L2.

In some more specific embodiments, the inner wall of the bottom of the first groove is provided with two connected concave cambered surfaces.

In some more specific embodiments, the first groove further includes a guide portion with a trumpet-shaped opening, and an inner wall of the guide portion includes two arc-shaped surfaces arranged left and right.

In some more specific embodiments, the arcuate surface is contiguous with the concave arcuate surface.

In some more specific embodiments, the second chamfer has a flat surface that is continuous with the first side surface and/or the second side surface of the second tip.

In some more specific embodiments, the plane forms an angle θ 1 with the first side surface of the second tool bit, the plane forms an angle θ 2 with the second side surface of the second tool bit, and θ 1 is greater than or equal to θ 2.

In some more specific embodiments, the second body is further provided with a first side surface and/or a second side surface identification structure for identifying the second body.

In some more specific embodiments, the identification structure comprises a notch.

In some more specific embodiments, the identification feature comprises a chamfer.

In some more specific embodiments, the identification feature comprises a notch and a chamfer.

In the following, the technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings and the specific embodiments, and unless otherwise specified, all the components used in the embodiments of the present invention are known to those skilled in the art, and all the components can be obtained commercially, and the specific structure and model thereof are not limited herein.

Examples

Referring to fig. 1 to 6, a crimping tool bit for connecting a micro terminal with a wire conductor includes an upper tool 1 and a lower tool 2, the upper tool 1 includes a first body 11 and a first tool bit 12, the first tool bit 12 is provided with a first groove 121 for inserting a terminal 4, an inner wall of a groove bottom of the first groove 121 is connected with a first side surface of the first tool bit 12 through a first chamfer 122, the lower tool 2 includes a second body 21 and a second tool bit 22, the second tool bit 22 is provided with a second groove 221 for matching with the first groove 121 to crimp the terminal 4, and an inner wall of a groove bottom of the second groove 221 is connected with the first side surface and/or a second side surface of the second tool bit 22 through a second chamfer 222.

Understandably, the first and

second tips

12, 22 have first and second side surfaces that are oppositely disposed in a first direction, as shown in fig. 1 for the first and

second tips

12, 22. Referring to fig. 3, the first direction may be an X-axis direction. A crimping space for placing the terminal 4 is formed between the first groove 121 and the second groove 221, referring to fig. 5-6, which are visible as the second side surface of the second blade 22, the terminal 4 and the connecting line thereof can extend into the crimping space along the first side surface of the second blade 22 toward the second side surface of the second blade 22, and the upper blade 1 and the lower blade 2 move relatively to complete the crimping work. It is common, tool bit department is comparatively sharp, has a great shearing force effect to cause the heart yearn to receive a cutting force on 4 package section of thick bamboo base materials of terminal when going up 1 pushes down, makes the conductor damage easily. Be provided with first chamfer 122 on the first tool bit 12, when through last sword 1 and the crimping of lower sword 2, the package section of thick bamboo substrate and the contact butt of first chamfer 122 of terminal 4 can avoid the unusual deformation of terminal substrate and tear and wire conductor damage, and last sword, lower sword destroy substrate and conductor when avoiding the crimping to effectively guarantee that miniature terminal is qualified with the wire rod binding power and be connected the electrical property best. The bottom of the second groove 221 is connected to the first side surface and/or the second side surface of the second blade 22 through a second chamfered portion 222, and when the terminal 4 is crimped, the sleeve-wrapped substrate of the terminal contacts the second chamfered portion 222, so that a transitional supporting force can be provided for the terminal, and the terminal 4 is prevented from deforming or warping during crimping.

Further, the first chamfered portion 122 is formed protruding from the first chip 12. The first chamfer 122 may be a radius R that is convex with respect to the first cutting insert 12.

Further, the first chamfered portion 122 is also connected to the second side surface of the first tip 12. The first chamfered portion 122 is connected to the first side surface and the second side surface of the first blade 12, and the sleeve-wrapped base material of the terminal 4 and the terminal 4 can be brought into contact with the first chamfered portion 122 during crimping, so that the first blade 12 can protect the terminal 4 and the sleeve-wrapped base material of the terminal 4 more effectively during crimping.

Specifically, the rounded corners are smoothly connected with the first side and/or the second side of the first blade head 12.

Further, the width of the first groove 121 along the first direction is L1, the width of the second groove 221 along the first direction is L2, and L1 is equal to or less than L2. Referring to fig. 3, the first direction is the X-axis direction. It can be understood that the common upper blade 1 and the common lower blade 2 have the same thickness, when the terminal 4 is crimped by using the upper blade 1 and the lower blade 2, the supporting force borne by the lower blade 2 is unbalanced, the size ratio of the upper blade to the lower blade is unreasonable, and when the terminal 4 is crimped by the upper blade and the lower blade, the crimped terminal is abnormally deformed due to unbalanced supporting of the force points extruded from the upper blade to the lower blade. In this embodiment, L1 is smaller than L2, when the upper blade 1 and the lower blade 2 are crimped, the second groove 221 can receive the terminal 4, so as to provide a better supporting effect for the crimping process, and the second chamfered portion 222 provided thereon can avoid deformation and tilting of the terminal 4.

Specifically, when a terminal 4 is crimped, the L1 is 1.1 to 1.2 times the width of the crimp region 41 of the terminal 4, and the L2 is 1.25 to 1.35 times the width of the crimp region 41 of the terminal 4.

Specifically, the value of R is 0.15-0.25 times of L1.

Further, the inner wall of the groove bottom of the first groove 121 is provided with two connected concave arc surfaces. When crimping, the upper knife 1 and the lower knife 2 move relatively, one end of the wrapping barrel of the terminal 4 can be turned over along the shape of the concave cambered surface, and then the wrapping barrel is buckled on the terminal 4 in a pressing mode, so that the crimping effect is better achieved.

Further, the first groove 121 further includes a guide portion with a trumpet-shaped opening, and an inner wall of the guide portion includes two arc-shaped surfaces 123 arranged left and right. The arc face 123 can avoid contacting with the terminal 4 or the wire rod, and avoid mistakenly touching in the crimping work.

Further, the arc-shaped surface 123 is connected with the concave arc-shaped surface. The arc surface 123 may be connected to the concave arc surface. The arc-shaped surface 123 may also be connected to the concave arc surface via a transition surface, which may be a smooth transition surface.

Further, the second chamfer 222 has a plane that is continuous with the first side surface and/or the second side surface of the second tool tip 22. It will be appreciated that in this embodiment, the second chamfered portion 222 can be a plane through which the bottom of the second groove 221 is connected to the first side surface and/or the second side surface of the second cutting head 22.

Further, an included angle formed between the plane and the first side surface of the second tool bit 22 is θ 1, an included angle formed between the plane and the second side surface of the second tool bit 22 is θ 2, and θ 1 is greater than or equal to θ 2.

Furthermore, a first side and/or a second side identification structure 3 for identifying the second body 21 is disposed on the second body 21. The problem that the installation error of the first side and the second side is easy to occur when the lower knife 2 is installed can affect the crimping effect of the terminal 4, and the identification structure 3 is arranged on the second main body 21 and used for distinguishing the first side or the second side of the lower knife 2 so as to facilitate accurate installation.

Further, the identification structure 3 comprises a notch. The identification structure may be a notch, and the notch may be disposed on one side of the second main body 21, and when the notch is disposed on the left side, the first side surface of the lower knife 2 faces the notch.

Further, the identification structure 3 comprises a chamfer. The identification structure 3 may be a chamfer, and the chamfer may be disposed on one side of the second body 21, and when the chamfer is disposed on the left side, the first side of the lower blade 2 faces the first side.

Further, the identification structure 3 comprises a notch and a chamfer. Referring to fig. 1 and 5, the identification structure 3 may include a notch and a chamfer, the notch may be disposed on one side of the second main body 21, or both sides of the second main body 21 may be disposed with notches, and the shape of the notch is different, so that the first side surface or the second side surface of the lower blade 2 can be determined. A chamfer is further arranged on one notch, so that the first side face or the second side face of the lower cutter 2 can be distinguished more clearly.

It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and therefore, the protection scope of the present invention should not be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a crimping tool bit that is used for miniature terminal to be connected with wire conductor, includes upper slitter (1) and lower sword (2), its characterized in that: the upper knife (1) comprises a first main body (11) and a first knife head (12), a first groove (121) used for pressing a terminal (4) is formed in the first knife head (12), the inner wall of the groove bottom of the first groove (121) is connected with the first side face of the first knife head (12) through a first chamfering portion (122), the lower knife (2) comprises a second main body (21) and a second knife head (22), a second groove (221) matched with the first groove (121) and used for pressing the terminal (4) is formed in the second knife head (22), and the inner wall of the groove bottom of the second groove (221) is connected with the first side face and/or the second side face of the second knife head (22) through a second chamfering portion (222).

2. The crimping tool bit for miniature terminal to wire conductor connections of claim 1, wherein: the first chamfer (122) is formed to protrude from the first tool bit (12);

and/or the first chamfered portion (122) is further connected to the second side surface of the first cutting head (12).

3. The crimping tool bit for miniature terminal to wire conductor connection of claim 1, wherein: the width of the first groove (121) along the first direction is L1, the width of the second groove (221) along the first direction is L2, and L1 is less than or equal to L2.

4. The crimping tool bit for miniature terminal to wire conductor connection of claim 1, wherein: the inner wall of the bottom of the first groove (121) is provided with two connected concave cambered surfaces.

5. The crimping tool bit for miniature terminal to wire conductor connection of claim 4, wherein: the first groove (121) further comprises a guide part with a horn-shaped opening, and the inner wall of the guide part comprises two arc-shaped surfaces (123) arranged left and right.

6. The crimping tool bit for miniature terminal to wire conductor connection of claim 5, wherein: the arc-shaped surface (123) is connected with the concave arc surface.

7. The crimping tool bit for miniature terminal to wire conductor connection of claim 1, wherein: the second chamfered portion (222) has a flat surface that is continuous with the first side surface and/or the second side surface of the second cutting head (22).

8. The crimping tool bit for miniature terminal to wire conductor connection of claim 7, wherein: the plane and the first side surface of the second cutter head (22) form an included angle theta 1, the plane and the second side surface of the second cutter head (22) form an included angle theta 2, and theta 1 is larger than or equal to theta 2.

9. A crimping tool bit for miniature terminal to wire conductor connections as set forth in claim 8, wherein: the second body (21) is also provided with a first side and/or a second side identification structure (3) for identifying the second body (21).

10. The crimping tool bit for a micro terminal to wire conductor connection of claim 9, wherein: the identification structure (3) comprises a notch and/or chamfer.