Crimping cylinder for electric connector contact and use method thereof
By designing a crimping barrel with a wall thickness thinner than the fixed part and extruding the den at its periphery, the problem that traditional crimping barrels cannot take into account both the tensile breakage force and the crimping resistance is solved, and a more efficient electrical connection is achieved.
Patent Information
- Application Number
- CN202510193086.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-05-13
AI Technical Summary
Traditional circular crimping barrels cannot take into account the optimization of tension and crimping resistance during crimping, resulting in limited mechanical performance.
A crimping cylinder for electrical connector contacts is designed, which includes a connecting portion and a fixing portion, and the wall thickness of the connecting portion is thinner than the fixing portion. By extruding the nest points on the outer periphery of the connecting portion and the fixing portion, an effective connection between the conductor and the crimping cylinder is achieved.
Without reducing the tension breaking force, a low crimp resistance is achieved, ensuring the reliability of the electrical connection and the improvement of mechanical properties.
Smart Images
Figure CN119994506A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric connectors, and in particular to a crimping sleeve for an electric connector contact and a use method thereof. Background Art
[0002] When a round crimping barrel is crimped using a four-point double-dimple method, the crimping resistance will gradually decrease as the pressed dimples become deeper and deeper. However, when the depth of the dimples reaches a certain level, the tensile force of the crimping will decrease, affecting the mechanical properties of the crimping.
[0003] The wall of the circular crimping barrel of a traditional connector is of uniform thickness. In actual crimping, the breaking force of the crimping is generally used as the judgment standard. At this time, the crimping resistance is not optimal, and both the breaking force and the lower crimping resistance cannot be taken into account. Therefore, a crimping barrel for an electrical connector contact and a method of using the same are proposed to achieve connection between the crimping barrel and the wire conductor after crimping, which can ensure the breaking force at the crimping point and achieve lower crimping resistance. Summary of the invention
[0004] In view of the deficiencies in the prior art, the present invention provides a crimping barrel for an electrical connector contact and a method of using the same, which solves the problem that the circular crimping barrel of a traditional connector cannot take into account both the breaking force of the crimping and the lower crimping resistance.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a crimping cylinder for an electrical connector contact, comprising a crimping cylinder body used in conjunction with a wire, the crimping cylinder body comprising a connecting portion and a fixing portion, the connecting portion and the fixing portion are integrally formed, the connecting portion and the fixing portion are both cylindrical, and the wall thickness of the connecting portion is thinner than that of the fixing portion, one end of the wire passes through the connecting portion and extends to the interior of the fixing portion.
[0006] The present invention is further configured as follows: the connecting portion comprises a first connecting cylinder, and an outer ring groove is formed on the outer periphery of the first connecting cylinder.
[0007] The present invention is further configured such that: the first connecting cylinder is integrally formed with the fixing portion, and the inner diameter of the first connecting cylinder is the same as the inner diameter of the fixing portion.
[0008] The present invention is further configured such that: an inner cavity at one end of the first connecting cylinder is provided with a first guide angle.
[0009] The present invention is further configured as follows: the connecting portion comprises a second connecting cylinder, the second connecting cylinder is formed integrally with the fixing portion, and the outer diameter of the second connecting cylinder is the same as the outer diameter of the fixing portion.
[0010] The present invention is further configured as follows: the connecting portion comprises a second connecting cylinder, the second connecting cylinder is formed integrally with the fixing portion, and the outer diameter of the second connecting cylinder is the same as the outer diameter of the fixing portion.
[0011] The present invention also discloses a method for using a crimping barrel for an electrical connector contact, which specifically comprises the following steps: S1. After stripping off the insulation layer of one end of the wire, pass it through the connecting part and enter the fixing part; S2. Four first nests are squeezed out on the periphery of the connecting part so that the connecting part region where the first nests are located contacts the conductive wire, and then four second nests are squeezed out on the periphery of the fixing part so that the fixing part region where the second nests are located contacts the conductive wire.
[0012] The present invention is further configured such that: the four first nests are evenly spaced and distributed on the periphery of the connection part, and when the first nest area of the connection part contacts the wire, a cavity is left between the connection part and the wire, and the maximum cross-sectional area of the cavity is 10% of the cross-sectional area of the space enclosed by the current connection part, and the minimum cross-sectional area of the current wire is 75% of the cross-sectional area of the wire before crimping; The four second dimples are evenly spaced around the periphery of the fixing part, and when the second dimple area of the fixing part contacts the wire, there is no cavity between the fixing part and the wire, and the maximum cross-sectional area of the current wire is 70% of the cross-sectional area of the wire before crimping.
[0013] The present invention provides a crimping barrel for an electrical connector contact and a method for using the crimping barrel. The crimping barrel has the following beneficial effects: The present invention sets a connecting part with a wall thickness thinner than that of the fixing part. During crimping, the first nest of the four-point double nest is crimped on an area with a thin wall thickness, thereby achieving normal crimping of the wire and providing a suitable breaking force for the connection between the wire and the crimping tube body. During crimping, the second nest of the four-point double nest is crimped on an area with a thick wall thickness, thereby achieving over-crimping of the wire and providing a lower crimping resistance for the connection between the wire and the crimping tube body, thereby achieving a lower crimping resistance without reducing the breaking force between the wire and the crimping tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the connection between the wire and the crimping barrel body structure in the first embodiment of the present invention; Figure 2 It is a structural schematic diagram of the crimping barrel body in the first embodiment of the present invention; Figure 3 It is a structural schematic diagram of the crimping barrel body in the second embodiment of the present invention; Figure 4 This is a schematic diagram of the connection between the wire and the crimping barrel body structure in the second embodiment of the present invention; Figure 5It is a cross-sectional schematic diagram of the connection between the first connecting cylinder and the wire of the present invention; Figure 6 It is a cross-sectional schematic diagram of the connection between the fixing part and the wire of the present invention.
[0015] In the figure: 1. Wire; 2. Crimping barrel body; 3. Connecting part; 301. First connecting cylinder; 302. Outer ring groove; 303. First guide angle; 304. Second connecting cylinder; 305. Second guide angle; 306. Guide slope; 307. First nest; 308. Cavity; 4. Fixed part; 401. Second nest point. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0017] See also Figure 1-6 , the embodiment of the present invention provides the following technical solutions: Embodiment 1: A crimping cylinder for an electrical connector contact, comprising a crimping cylinder body 2 used in conjunction with a wire 1, the crimping cylinder body 2 comprising a connecting portion 3 and a fixing portion 4, the connecting portion 3 and the fixing portion 4 being integrally formed, the connecting portion 3 and the fixing portion 4 being both cylindrical, one end of the wire 1 passing through the connecting portion 3 and extending to the interior of the fixing portion 4, and the wall thickness of the connecting portion 3 being thinner than the wall thickness of the fixing portion 4, specifically, the connecting portion 3 comprises a first connecting cylinder body 301, an outer annular groove 302 is provided on the outer periphery of the first connecting cylinder body 301, the first connecting cylinder body 301 is integrally formed with the fixing portion 4, and the inner diameter of the first connecting cylinder body 301 is the same as the inner diameter of the fixing portion 4.
[0018] To further explain, in order to facilitate the insertion of the wire 1 into the first connecting cylinder 301 , a first guide angle 303 is provided in the inner cavity at one end of the first connecting cylinder 301 .
[0019] The method for using the crimping barrel for the contact piece of the electrical connector specifically comprises the following steps: S1, after stripping off the insulation layer at one end of the wire 1, pass the leaked conductor through the first connecting cylinder 301 and enter the fixing part 4; S2. Four first nests 307 are squeezed out on the periphery of the first connecting cylinder 301. The four first nests 307 are evenly spaced and distributed on the periphery of the connecting portion 3, so that the area of the first connecting cylinder 301 where the first nests 307 are located is in contact with the wire 1. It should be noted that when the first nests 307 area of the first connecting cylinder 301 is in contact with the wire 1, a cavity 308 is left between the first connecting cylinder 301 and the wire 1, and the maximum cross-sectional area of the cavity 308 is 10% of the cross-sectional area of the space enclosed by the current first connecting cylinder 301, and the minimum cross-sectional area of the current wire 1 is 75% of the horizontal area of the wire 1 before crimping, wherein the first nests 307 provide a holding force that meets the requirements for the connection between the wire 1 and the crimping cylinder body 2; Then, four second nests 401 are squeezed out on the periphery of the fixing part 4, and the four second nests 401 are evenly spaced on the periphery of the fixing part 4, so that the area of the fixing part 4 where the second nests 401 are located is in contact with the wire 1, wherein, when the second nests 401 area of the fixing part 4 is in contact with the wire 1, there is no cavity 308 between the fixing part 4 and the wire 1, and the maximum cross-sectional area of the current wire 1 is 70% of the cross-sectional area of the wire 1 before crimping, thereby achieving over-connection between the fixing part 4 and the wire 1, so as to reduce the crimping resistance and provide a reliable electrical connection between the crimping barrel body 2 and the wire 1.
[0020] Embodiment 2: A crimping cylinder for an electrical connector contact, comprising a crimping cylinder body 2 used in conjunction with a wire 1, the crimping cylinder body 2 comprising a connecting portion 3 and a fixing portion 4, the connecting portion 3 and the fixing portion 4 being integrally formed, the connecting portion 3 and the fixing portion 4 being both cylindrical, one end of the wire 1 passing through the connecting portion 3 and extending to the interior of the fixing portion 4, and the wall thickness of the connecting portion 3 being thinner than that of the fixing portion 4, specifically, the connecting portion 3 comprises a second connecting cylinder body 304, the second connecting cylinder body 304 being integrally formed with the fixing portion 4, and the outer diameter of the second connecting cylinder body 304 being the same as the outer diameter of the fixing portion 4.
[0021] Further explanation, in order to facilitate the insertion of the wire 1 into the second connecting cylinder 304 and the fixing part 4, the inner cavity at one end of the second connecting cylinder 304 is provided with a second guide angle 305, and a guiding slope 306 is provided between the inner cavity at the other end of the second connecting cylinder 304 and the inner cavity of the fixing part 4.
[0022] The method for using the crimping barrel for the contact piece of the electrical connector specifically comprises the following steps: S1. After stripping off the insulation layer at one end of the wire 1, pass the leaked conductor through the second connecting cylinder 304 and enter the fixing part 4 through the guiding bevel 306. It should be noted that when the first nest 307 area of the second connecting cylinder 304 contacts the wire 1, a cavity 308 is left between the second connecting cylinder 304 and the wire 1, and the maximum cross-sectional area of the cavity 308 is 10% of the cross-sectional area of the space enclosed by the current second connecting cylinder 304, that is, the current porosity between the second connecting cylinder 304 and the wire 1 is less than or equal to 10%, and the minimum cross-sectional area of the current wire 1 is 75% of the horizontal area of the wire 1 before crimping, wherein the first nest 307 provides the required holding force for the connection between the wire 1 and the crimping cylinder body 2; S2, four first nests 307 are squeezed out of the outer periphery of the second connecting cylinder 304, so that the area of the second connecting cylinder 304 where the first nests 307 are located is in contact with the wire 1, Then, four second nests 401 are squeezed out on the periphery of the fixing part 4, and the four second nests 401 are evenly spaced on the periphery of the fixing part 4, so that the area of the fixing part 4 where the second nests 401 are located is in contact with the wire 1, wherein, when the second nests 401 area of the fixing part 4 is in contact with the wire 1, there is no cavity 308 between the fixing part 4 and the wire 1, and the maximum cross-sectional area of the current wire 1 is 70% of the cross-sectional area of the wire 1 before crimping, thereby achieving over-connection between the fixing part 4 and the wire 1, so as to reduce the crimping resistance and provide a reliable electrical connection between the crimping barrel body 2 and the wire 1.
[0023] In summary, the present invention can ensure a suitable breaking force between the crimping barrel body 2 and the wire 1 when crimping the wire 1, and can also achieve a lower crimping resistance to ensure a reliable electrical connection.
[0024] It should be noted that the surface of the crimping barrel body 2 is plated with an anti-oxidation metal coating, such as gold plating or silver plating.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A crimping barrel for an electrical connector contact, comprising a crimping barrel body (2) used in conjunction with a wire (1), characterized in that: The crimping barrel body (2) comprises a connecting portion (3) and a fixing portion (4), wherein the connecting portion (3) and the fixing portion (4) are integrally formed, the connecting portion (3) and the fixing portion (4) are both cylindrical, and the wall thickness of the connecting portion (3) is thinner than the wall thickness of the fixing portion (4), and one end of the wire (1) passes through the connecting portion (3) and extends into the interior of the fixing portion (4).
2. A crimping barrel for an electrical connector contact according to claim 1, characterized in that: The connecting portion (3) comprises a first connecting cylinder (301), and an outer ring groove (302) is formed on the outer circumference of the first connecting cylinder (301).
3. A crimping barrel for an electrical connector contact according to claim 2, characterized in that: The first connecting cylinder (301) and the fixing portion (4) are formed integrally, and the inner diameter of the first connecting cylinder (301) is the same as the inner diameter of the fixing portion (4).
4. A crimping barrel for an electrical connector contact according to claim 2, characterized in that: The inner cavity at one end of the first connecting cylinder (301) is provided with a first guide angle (303).
5. A crimping barrel for an electrical connector contact according to claim 1, characterized in that: The connecting portion (3) comprises a second connecting cylinder (304), the second connecting cylinder (304) and the fixing portion (4) are formed integrally, and the outer diameter of the second connecting cylinder (304) is the same as the outer diameter of the fixing portion (4).
6. A crimping barrel for an electrical connector contact according to claim 5, characterized in that: The inner cavity at one end of the second connecting cylinder (304) is provided with a second guide angle (305), and a guiding inclined surface (306) is provided between the inner cavity at the other end of the second connecting cylinder (304) and the inner cavity of the fixing portion (4).
7. A method for using a crimping barrel for an electrical connector contact, characterized in that: The specific steps include: S1, after stripping off the insulation layer at one end of the wire (1), pass the wire through the connecting portion (3) and enter the fixing portion (4); S2. Four first nests (307) are extruded on the periphery of the connecting portion (3), so that the region of the connecting portion (3) where the first nests (307) are located is in contact with the conductor (1), and then four second nests (401) are extruded on the periphery of the fixing portion (4), so that the region of the fixing portion (4) where the second nests (401) are located is in contact with the conductor (1).
8. A method for using a crimping barrel for an electrical connector contact according to claim 7, characterized in that: The four first nests (307) are evenly spaced and distributed on the periphery of the connecting portion (3), and when the first nests (307) of the connecting portion (3) are in contact with the conductor (1), a cavity (308) is left between the connecting portion (3) and the conductor (1), and the maximum cross-sectional area of the cavity (308) is 10% of the cross-sectional area of the space enclosed by the current connecting portion (3), and the minimum cross-sectional area of the current conductor (1) is 75% of the cross-sectional area of the conductor (1) before crimping; The four second dimples (401) are evenly spaced and distributed on the periphery of the fixing portion (4), and when the second dimples (401) of the fixing portion (4) are in contact with the conductor (1), there is no cavity (308) between the fixing portion (4) and the conductor (1), and the maximum cross-sectional area of the conductor (1) is 70% of the cross-sectional area of the conductor (1) before crimping.