Crimping terminal

Abstract

The invention relates to a crimping terminal. The invention relates to a crimping terminal for connecting to a conductor (32) of a cable (30) having an insulation (34) surrounding the conductor (32). The crimping terminal (1) comprises a conductor connection portion (10), where the conductor connection portion (10) comprises conductor crimping wings (12, 14) for crimping on a conductor (32) of a cable (30); wherein, in the non-crimped state, each conductor crimping wing (12, 14) has at least one progressive portion (40), which in the longitudinal direction L has a height (h (L)) that gradually increases towards the end (36) of the conductor (32) to be crimped, and wherein the progressive portion (40) extends along at least 50% of the length (l) of the conductor crimping wing (12, 14).

Description

[0001] This application is a divisional application of the Chinese patent application with application number 202111232511.2, application date October 22, 2021, and invention name “Voltage Connector Terminal”. Technical Field

[0002] The invention relates to the field of voltage terminations, in which a conductor of an electrical cable is mechanically and electrically connected to an electrical terminal, electrical connector, etc. The connection is mechanically accomplished by forming a sheet metal element around the cable. Background Art

[0003] For example, in the production of wiring harnesses for the automotive industry, voltage terminals are widely used to connect electrical cables to electrical connectors.

[0004] For example, examples of electrical connectors with voltage terminals are known from documents JP5282462B2, DE102017218105A1, DE112013002610T5, DE102013203796A1, DE102017218105A1, DE102015224219 A1, EP1635426 B1, US7,121,903B2, DE102014204358 A1, EP2965383 B1. In these documents, the voltage terminals are specially shaped to provide specific advantages, namely, to strengthen the connector between the insulation connection part and the core connection part. Other related technologies can be found in DE20008544U1, WO2015 / 060161A1, WO2009 / 115860A1 and US2013 / 23101A1.

[0005] However, such crimping terminals of the prior art may show low crimping performance in terms of electrical and mechanical reliability. Therefore, they may be prone to failure due to disconnection between the wire and the connector. In addition, some crimping terminals include an L-shaped geometry in a non-crimped state, which requires two different crimping parts in the conductor or core crimping area. Therefore, such an L-shaped geometry requires more space or terminal length due to the space between the two crimping parts and special tools for crimping such terminals. Other crimping terminals even require three different crimping parts to crimp the conductor.

[0006] Therefore, there is a need to improve the mechanical and electrical reliability of crimping terminals without increasing the size of the electrical connector and without requiring special tools for crimping. Summary of the invention

[0007] The above problems are solved by the voltage connection terminal as described below.

[0008] In particular, the above problem is solved by a voltage connection terminal, which is used to connect to the conductor of a cable, the cable having an insulating part surrounding the conductor, and the voltage connection terminal includes a conductor connecting part, wherein the conductor connecting part includes conductor crimping wings to be crimped onto the conductor of the cable, wherein, in a non-crimped state, each of the conductor crimping wings has at least one progressive portion, and the progressive portion has a height h(L) in the longitudinal direction L that gradually increases toward the end of the conductor to be crimped.

[0009] By having a conductor crimping wing including a progressive portion having an increasing height along the longitudinal direction of the crimp terminal, the compression of the wire on the conductor increases along the length of the crimp terminal from a low wire compression at the rear of the conductor connection portion to a high wire compression at the front of the conductor connection portion. This progressive wire compression results from providing more material to the crimp terminal toward the end of the conductor to be crimped, and using a standard crimping tool with a standard terminal crimp barrel.

[0010] Having such a progressive core crimp geometry provides a perfect smooth wire compression with optimal electrical and mechanical crimp performance. Due to the lower wire compression at the insertion end / rear of the wire connection part, the risk of conductor breakage during wire pull-out testing is significantly reduced.

[0011] In addition, the crimping terminal according to the present disclosure is compatible with existing standard terminal crimping barrels and does not require tool changes for crimping terminals having two or more different crimping portions for conductors. This saves effort and cost for providing special tools.

[0012] Furthermore, the progressive core crimping geometry of the conductor connection portion of the voltage crimping terminal according to the present disclosure does not require more space than conventional crimping terminals. Therefore, no design changes are required for the device to be connected.

[0013] The progressive portion of at least one conductor crimping wing may include at least one notch. It is also possible that the progressive portions of both conductor crimping wings include at least one notch. The notch is an interruption or depression in the progressive portion. The notch divides the smooth reduction of the compaction level of the progressive portion into two parts or compaction areas. For example, the wire compression at the rear of the conductor connection portion can be the lowest, and the wire compression at the front can be the highest. The notch allows the two areas to be mechanically decoupled. This achieves improved mechanical strain relief and shock absorption performance while still ensuring a good electrical connection. For example, micro-movements of the conductor can be kept away from high compression areas. For example, if the conductor is used for signal transmission, impedance mismatch can be reduced, and therefore the reflection of the signal can be reduced, which leads to higher data transmission rates and better signal integrity.

[0014] The notch may comprise a depth d which is less than 50% of the height h(L) of the progressive portion at the location of the notch. Such a notch may be referred to as a shallow notch and may achieve preferred shock absorbing properties while ensuring that mechanical stability is maintained. The greater the depth, the better the shock absorbing properties, but at the same time the mechanical stability begins to be affected. The preferred depth d is between 5% and 40% of the height h(L) of the progressive portion at the location of the notch, more preferably between 5% and 20%, most preferably between 5% and 15%.

[0015] The notch may include a notch width w, wherein the notch width w is less than 50% of the full length l of the conductor crimping wing. The larger the notch width, the greater the isolation of the high compression area from the low compression area. However, if the width is too large, the crimping becomes unstable. The preferred width w is about 5% to 35%, more preferably 10% to 25%, and most preferably 10% to 15% of the full length l of the conductor crimping wing.

[0016] The profile of the recess may comprise any suitable shape. For example, the profile may be a circular shape (then the depth d=width w, both measured in mm), a substantially circular shape (then the depth d≈width w, both measured in mm) or an elliptical shape (d≠w, both measured in mm). The term "substantially circular shape" means that a deviation of about 10% from a circular shape is permitted for the width or depth. A substantially circular shape may provide improved shock absorbing properties. It is also possible that the profile of the recess has a parabolic shape or a hyperbolic shape.

[0017] The progressive portion of at least one or both of the conductor crimping tabs may include more than one notch, for example, two, three or four notches. The notches may be similar in structure, such as their depth and width, or their structure, such as their respective depth or width, may be different. Having several notches per conductor crimping wing may be particularly advantageous, as it allows a gradual mechanical decoupling of the highest compression area from the lowest compression area.

[0018] The progressive portion extends along the full length l of each conductor crimping wing. Thus, the compressive force on the conductor increases linearly from the rear to the front of the conductor connection portion. The conductor crimping wings can have the same length or substantially the same length, wherein substantially the same length means the same length within an allowable deviation of about 10%.

[0019] Alternatively, the progressive portion may extend only along at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90% of the length l of the conductor crimping wing.

[0020] Preferably, the height h of the progressive portion increases linearly. This provides a substantially linear increase in the compressive force along the length of the crimp terminal.

[0021] Preferably, the height h of the progressive portion increases non-linearly. Depending on the diameter and material of the conductor, a non-linear increase in the height h of the progressive portion and thus a non-linear increase in the compressive force on the conductor along the length of the crimp terminal may be selected to provide an optimized crimping performance.

[0022] Preferably, in the non-crimped state, the conductor crimping wing comprises an upper edge inclined at an angle α at the progressive portion.

[0023] Preferably, the angle α ranges from 2° to 30°, preferably from 2° to 20°, more preferably from 2° to 15°, and most preferably from 5° to 15°. Thus, the linear increase in the compressive force on the conductor can be adjusted by the angle α of the inclined upper edge of the progressive portion and adapted to different conductor diameters, conductor types (i.e., solid or stranded) and materials.

[0024] Preferably, the conductor connecting part further comprises a conductor connecting bottom part, wherein the conductor crimping wings are integrally connected to the conductor connecting bottom part with their respective lower edges.

[0025] Preferably, the voltage connection terminal further comprises an insulation connection portion mechanically connected to the conductor connection portion, wherein the insulation connection portion comprises insulation crimping wings to be crimped onto the insulation of the cable. The insulation connection portion further significantly increases the mechanical stability of the voltage connection terminal. Preferably, the insulation connection portion will be crimped structurally independently of the conductor connection portion.

[0026] Preferably, the insulation connection part further comprises an insulation connection bottom part, wherein the insulation crimping wings are integrally connected to the insulation connection bottom part with their respective lower edges. Preferably, the insulation connection bottom part is connected to the conductor connection bottom part.

[0027] Preferably, the transition between the upper edge of the crimping wing and the front side edge and / or the rear side edge is rounded. This rounded transition avoids excessive compression forces at the rear and front ends of the conductor connection part, and thus further reduces the risk of crimping conductor breakage.

[0028] Preferably, the transition between the upper edge of the crimping wing and the rear edge and / or the front edge is rounded with a radius r1, r2, respectively, and the radius r1, r2 is preferably in the range of 3% to 20%, more preferably 5% to 20% or most preferably 5% to 10% of the length l of the conductor crimping wing.

[0029] Preferably, the crimping wing comprises a chamfer along its upper edge. The chamfer facilitates the introduction of the crimping wing into the strand of the conductor, thereby facilitating the crimping process.

[0030] Preferably, the chamfer 19 is inclined at an angle β relative to the plane of the crimping wings, wherein the angle β is in the range of 10° to 40°, preferably in the range of 20° to 30°. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In the following, preferred embodiments of the present disclosure are disclosed with reference to the accompanying drawings, in which:

[0032] Figure 1 is a side view of an embodiment of a voltage contact terminal in a non-crimped state;

[0033] Figure 2 In crimped state Figure 1 Embodiments of and side views of cables;

[0034] Figure 3 yes Figure 1 A three-dimensional view of the conductor connection portion of the voltage terminal;

[0035] Figure 4 yes Figure 3 A side view of a conductor connection portion;

[0036] Figure 5 is from Figure 3 A plan view of the conductor connection portion viewed from the rear;

[0037] Figure 6 is a three-dimensional view of another embodiment of a voltage-connecting terminal in a non-crimped state;

[0038] Figure 7 In crimped state Figure 6 3D view of voltage terminals and cables;

[0039] Figure 8 yes Figure 1 A partial plan view of a stamped flat blank of a voltage terminal;

[0040] Fig. 9 is a side view of an embodiment of a crimp terminal in a non-crimped state, the crimp terminal including a shallow notch;

[0041] Fig.10 is a side view of an embodiment of a crimp terminal in an uncrimped state, the crimp terminal including a deep recess; and

[0042] Fig.11 is a three-dimensional view of the conductor connecting portion of a crimp terminal, wherein one of the conductor crimping wings includes three notches.

[0043] Reference numerals list

[0044] 1 Voltage terminal

[0045] 2 terminal contact area

[0046] 10Conductor connection part

[0047] 11 Crimp the lower edge of the wing

[0048] 12 Right conductor crimping wing

[0049] 13 Crimp the upper edge of the wing

[0050] 14Left conductor crimping wing

[0051] 15 Flat surface of crimping wing

[0052] 16-conductor connection bottom section

[0053] 17 Crimp the front edge of the wing

[0054] 18 Crimp the rear edge of the wing

[0055] 19 Chamfer

[0056] 20 Insulation connection part

[0057] 21 Lower edge of the insulation crimping wing

[0058] 22 Right side insulation crimping wing

[0059] 24 Left insulation crimping wing

[0060] 26 Insulation connection bottom part

[0061] 30 Cable

[0062] 32 Electrical conductors

[0063] 34 Insulation

[0064] 36 Conductor end

[0065] 40 progressive parts

[0066] 42 Ridge

[0067] 50 rear side

[0068] 52 front side

[0069] r1, r2 radius

[0070] h(L) is the height in the longitudinal direction L

[0071] α Tilt angle

[0072] 61 Notch

[0073] 62 Longitudinal position of notch

[0074] 63 Angle between the upper edge of the crimping wing and the depth of the notch

[0075] 64 first lateral end of the notch

[0076] 65 The second lateral end of the notch

[0077] d Notch depth

[0078] wGap width DETAILED DESCRIPTION

[0079] Preferred embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings.

[0080] Figure 1 A side view of an exemplary electrical crimp terminal 1 is shown in a non-crimped state. Figure 2 The diagram shows the state in which the cable 30 is crimped. Figure 1 A side view of the voltage terminal 1. Figure 8 A corresponding substantially flat blank of the voltage connection terminal 1 is shown in FIG.

[0081] The voltage connection terminal 1 includes a conductor connection portion 10 having a connection portion for connecting to a cable 30 (see Figure 2 ) of the conductor crimping wings 12, 14 arranged opposite to each other. The voltage connection terminal 1 also includes any terminal contact area 2, which can be, for example, a fork, a lug (see Figure 7 ), plugs, pins, sockets or other forms required by electrical connectors. Figure 8 In FIG. 1 , the terminal contact area 2 is only partially shown.

[0082] The voltage connection terminal 1 is usually made of a metal sheet, such as copper or brass or other suitable metal, and is stamped from the metal sheet and formed from a Figure 8 The substantially flat blank shown is bent into Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Non-crimp style shown. Figure 3 The right conductor crimping wing 12 and the left conductor crimping wing 14 will be crimped around the conductor 32 of the cable 30 to provide electrical and mechanical connection between the crimping terminal 1 and the cable 30 .

[0083] like Figure 1 As shown and Figures 3 to 5As shown in more detail in FIG. 1 , the two conductor crimping wings 12, 14 in the non-crimped state have at least one progressive portion 40, which has a height h(L) that gradually increases toward the end 36 of the conductor 32 of the cable 30 to be crimped in the longitudinal direction L. The longitudinal direction L extends parallel to the longitudinal axis Lx of the crimping terminal 1, see Figure 8 The longitudinal axis Lx and the longitudinal direction L are further parallel to the longitudinal axis of the cable 30 crimped within the electrical terminal 1 .

[0084] Thus, the height h(L) depends on the longitudinal direction L and increases gradually along the longitudinal axis of the cable 30 to the end 36 of the conductor. This means that the height h(L) of the conductor crimping wings 12, 14 increases from the rear 50 of the progressive portion 40 towards the cable 30 to the front 52 of the progressive portion 40 towards the end 36 of the conductor 32. Thus, gradually more material to be crimped is provided from the rear 50 to the front 52 of the conductor connecting part 10. Thus, as Figure 2 As shown in , when the conductor connection portion 10 is crimped around the conductor 32 by a standard crimping tool, the wire compression is lowest at the rear portion 50 of the conductor connection portion 10, while the wire compression is highest at the front portion 52.

[0085] like Figure 1 and Figure 4 As shown, the upper edge 13 of the conductor crimping wings 12, 14 from left to right is inclined upward at an angle α relative to the horizontal plane in the longitudinal direction L and is straight. Therefore, the wire compression also increases linearly from the rear 50 to the front 52 of the conductor connecting part 10. Preferably, the angle α can be in the range of 2° to 30°, preferably from 2° to 20°, more preferably from 2° to 15°, and most preferably from 5° to 15°. The angle α may depend on the type, diameter and material of the conductor 32 and the length l of the conductor crimping wings 12, 14 or the length of the progressive portion 40.

[0086] like Figure 3 and Figure 8 As shown, preferably, the extension width W (L) of the blank forming the progressive portion 40 of the conductor connection portion 10 increases from the minimum extension width W1 to the maximum extension width W2 along the longitudinal direction L, preferably from the rear 50 to the front 52 of the progressive portion. Preferably, the maximum extension width W2 at the front side edge 17 of the progressive portion 40 is at least 15% longer than the minimum extension width W1 at the rear side edge 18. Preferably, the extension width W2 is 15%-50% longer than the extension width W1, more preferably about 25% longer.

[0087] Preferably, the progressive portion 40 of the conductor connection part 10 extends along the complete length l of the conductor crimping wings 12, 14. However, it should be noted that the progressive portion 40 of the conductor connection part 10 can also extend along only a portion of the length l of the conductor connection part 10 or the conductor crimping wings 12, 14. Preferably, the progressive portion 40 can extend along at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80% and preferably at least 90% of the length l of the conductor crimping wings 12, 14. By such a design, the compression force can be variably set along the length l of the conductor connection part 10 through areas of constant compression force and areas with gradually increasing compression force. In addition, more than one (for example, two or three) separate progressive portions 40 can be provided at one conductor crimping wing 12, 14. This can further be used to specifically determine the compression force of the crimped conductor connection part.

[0088] In addition, the height h(L) of the progressive portion 40 may increase linearly, as in Figure 1 , Figure 4 and Figure 8 4. As shown in particular in FIG. 4, other non-linear increases of the height h(L) are also possible. Thus, for example, an exponential or hyperbolic increase of the height h(L) of the progressive portion 40 may be used.

[0089] like Figure 3 and Figure 5 As shown, the conductor connection part 10 also includes a conductor connection bottom part 16, wherein the two conductor crimping wings 12, 14 are integrally connected to the conductor connection bottom part 16 with their respective lower edges 11. The conductor connection bottom part 16 can have a curved or rounded cross-section on the top side to adapt to the original shape of the conductor 32 and provide a good transition from the conductor connection bottom part 16 to the conductor crimping wings 12, 14.

[0090] like Figure 1 and Figure 4 As shown, the transition between the upper edge 13 and the front side edge 17 and / or the rear side edge 18 of the crimping wings 12, 14 can be rounded. Preferably, the transition is rounded with a radius r1, r2, respectively, and the radius r1, r2 is preferably in the range of 3% to 20%, more preferably 5% to 20% or most preferably 5% to 10% of the length l of the conductor crimping wings 12, 14. In particular, the rounded transition with radius r1 at the rear of the conductor connecting part 10 is conducive to the smooth application of the compressive force on the conductor 32 in this area. This further reduces the risk of the conductor 32 breaking or weakening.

[0091] In addition, if Figure 5As specifically shown in FIG. 1 , the crimping wings 12, 14 may include chamfers 19 along their upper edges 13, which may facilitate crimping of the conductor connection area 10. Preferably, the chamfers 19 are inclined at an angle β relative to the plane 15 of the conductor crimping wings 12, 14, wherein the angle β is in the range of 10° to 40°, preferably in the range of 20° to 30°.

[0092] like Figure 3 and 6 As shown, the conductor crimping wings 12, 14 may also include ridges 42 on their inner sides to improve the retention of the conductor 32 to be held by the conductor connecting portion 10. The ridges 42 deform the outer side of the conductor 32 to provide a form fit for the connection between the conductor 32 and the crimping terminal 1.

[0093] If the conductor crimp wings 12, 14 include ridges 42 and if one or both conductor crimp wings 12, 14 include at least one notch, it is possible and preferred that the ridges 42 do not overlap with any notch so that the effect or contribution of the ridges 42 on the holding force is not reduced ( Fig.11 One such example is shown).

[0094] Figure 6 and Figure 7 Another embodiment of the voltage connection terminal 1 is shown. Figure 6 and Figure 7 The voltage terminal 1 includes as follows Figures 1 to 5 The conductor connecting part 10 described above also includes an insulation connecting part 20 for connecting the terminal 1 to the insulation 34 of the cable 30. The insulation connecting part 20 is mechanically connected to the conductor connecting part 10 but is spaced apart from the conductor connecting part 10, and includes a right insulation crimping wing 22 and a left insulation crimping wing 24 arranged on opposite sides of an insulation connecting bottom part 26. The insulation connecting bottom part 26 has a curved or rounded cross-section on the top side so as to also fit the original shape of the insulation 34 and provide a good transition from the insulation connecting bottom part 26 to the insulation crimping wings 22, 24. The insulation crimping wings 22, 24 are offset from each other so that they are positioned side by side in the crimped state, as shown in FIG. Figure 7 The insulation crimping wings 22 , 24 are integrally connected to the insulation connecting bottom portion 26 at their respective lower edges 21 .

[0095] Figure 6 and Figure 7 The voltage connection terminal 1 further comprises a terminal contact region 2 which takes the form of a lug region which is integrally connected to the conductor connection portion 10 in the longitudinal direction L.

[0096] Cable 30 can be of different types, materials and diameters. Conductor 32 can be twisted and include multiple individual wires, or the conductor can be made of a single solid wire. Common materials for conductor 32 are copper, silver-coated copper, gold-coated copper, tin-coated copper, aluminum or other conductive materials. Insulation 34 is usually made of a non-conductive plastic material.

[0097] Fig. 9 and Fig.10 shows a similar Figure 1 1 is a side view of an exemplary electrical crimp terminal 1 in a non-crimped state. The crimping process is similar to that described above (e.g., in Figure 2 The crimping process described in the context of Fig. 9 and Fig.10 , the progressive portion 40 of each of the two conductor crimping wings 12, 14 includes a notch 61. The notch 61 includes a depth d. In this example, the depth d is measured from the upper edge 13 of the crimping wing at a right angle 63. In other words, the angle 63 between the upper edge 13 of the crimping wing and the notch depth d is 90 degrees.

[0098] Fig. 9 An example of a shallow notch is shown, where the depth d is less than 50% of the height h(L) of the notch at the longitudinal position 62. In this example, the depth d of the notch 61 is about 15% of the height h(L) of the progressive portion at the longitudinal position 62 of the notch. In the context of a crimping terminal 1 including a notch, if the notch 61 does not exist, the height h(L) is an imaginary height of the upper edge 13 of the crimping wing at the position 62, and can be constructed by drawing a straight line through the first lateral end 64 and the second lateral end 65 of the notch 61. As shown in the figure, the longitudinal position 62 of the notch is measured at the center of the notch. The profile of the notch 61 includes a substantially circular shape, i.e., the depth d≈the width w of the notch 61 (both measured in mm).

[0099] Fig.10 An example of a deep notch is shown, where the depth d is at least 50% of the height h(L) of the notch at the longitudinal position 62. In this example, the depth d is about 60% of the height h(L) of the notch at the longitudinal position 62. Since the depth d is measured at a right angle 63 from the upper edge 13 of the crimping wing, it can be greater than the height h(L) if the inclination angle α≠0. Fig.10 In the embodiment, the outline of the notch has an elliptical shape (d≠w, both measured in mm).

[0100] exist Fig. 9 and Fig.10 In the embodiment, the notch 61 comprises a notch width w, wherein the notch width w is less than 50% of the full length l of each conductor crimping wing 12, 14. Fig. 9 and Fig.10In the embodiment, the width w is about 10% of the full length l of each conductor crimping wing 12, 14. However, alternatively, the notch width w may be greater than 50% of the full length l of each conductor crimping wing 12, 14.

[0101] Fig.11 Shown above Figure 3 Similar views. The two conductor crimping wings 12, 14 in the non-crimped state each have a progressive portion 40 having a height h(L) in the longitudinal direction L that gradually increases toward the end 36 of the conductor 32 of the cable 30 to be crimped. Fig.11 In the example of FIG. 4 , the progressive portion 40 of the conductor crimping wing 12 includes three notches 61a , 61b , and 61c , while the opposing conductor crimping wing 14 includes no notches.

[0102] like Fig.11 As shown, the conductor crimping wings 12, 14 include ridges 42 on their inner sides to improve the retention of the conductor 32 to be retained by the conductor connecting portion 10. The ridges 42 deform the outer side of the conductor 32 to provide a form fit of the connection between the conductor 32 and the voltage contact terminal 1. The three notches 61a, 61b and 61c on the conductor crimping wings 12 are arranged not to overlap with the ridges 42 on the conductor crimping wings 12, so that the retention achieved by the form fit of the connection between the conductor 32 and the voltage contact terminal 1 is not adversely affected.

[0103] In the following, further embodiments are described to illustrate aspects of the present invention.

[0104] 1. A voltage terminal 1, the voltage terminal 1 is used to connect with a conductor 32 of a cable 30, the cable 30 has an insulating portion 34 surrounding the conductor 32, the voltage terminal 1 comprises a conductor connecting portion 10, wherein the conductor connecting portion 10 comprises conductor crimping wings 12, 14 for crimping onto the conductor 32 of the cable 30,

[0105] It is characterized in that, in the non-crimped state, the conductor crimping wings 12 , 14 have at least one gradual portion 40 , wherein the gradual portion 40 has a height h(L) in the longitudinal direction L that gradually increases toward the end 36 of the conductor 32 to be crimped.

[0106] 2. The voltage connection terminal according to embodiment 1, wherein the gradual portion 40 extends along the entire length l of the conductor crimping wings 12 , 14 .

[0107] 3. The voltage connection terminal according to embodiment 1, wherein the progressive portion 40 extends along at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80% and preferably at least 90% of the length l of the conductor crimping wings 12 , 14 .

[0108] 4. The voltage contact terminal according to any one of the preceding embodiments, wherein a height h of the gradual portion 40 increases linearly.

[0109] 5. The voltage contact terminal according to any one of embodiments 1 to 3, wherein a height h of the gradual portion 40 increases nonlinearly.

[0110] 6. The voltage-connecting terminal according to any one of the preceding embodiments, wherein in the non-crimped state, the conductor crimping wings 12 , 14 comprise an upper edge 13 inclined at an angle α at the progressive portion 40 .

[0111] 7. The voltage contact terminal according to embodiment 6, wherein the angle α ranges from 2° to 30°, preferably from 2° to 20°, more preferably from 2° to 15°, and most preferably from 5° to 15°.

[0112] 8. The voltage connection terminal according to any one of the preceding embodiments, wherein the conductor connection portion 10 further comprises a conductor connection bottom portion 16, wherein the conductor crimping wings 12, 14 are integrally connected to the conductor connection bottom portion 16 with their respective lower edges 11.

[0113] 9. According to any one of the aforementioned embodiments, the voltage terminal also includes an insulating part connecting part 20 mechanically connected to the conductor connecting part 10, wherein the insulating part connecting part 20 includes insulating part crimping wings 22, 24, and the insulating part crimping wings 22, 24 are used to be crimped onto the insulating part 34 of the cable 30.

[0114] 10. The voltage connection terminal according to embodiment 9, wherein the insulating portion connecting part 20 further comprises an insulating portion connecting bottom part 26, wherein the insulating portion crimping wings 22, 24 are integrally connected to the insulating portion connecting bottom part 26 with their respective lower edges 21.

[0115] 11. The voltage-connecting terminal according to any one of the preceding embodiments, wherein the transition between the upper edge 13 and the front edge 17 and / or the rear edge 18 of the crimping wings 12, 14 is rounded.

[0116] 12. A voltage terminal according to embodiment 11, wherein the transition between the upper edge 13 of the crimping wings 12, 14 and the rear edge 18 and / or the front edge 17 is rounded with a radius r1, r2, respectively, and the radius is preferably in the range of 3% to 20%, more preferably 5% to 20%, or most preferably 5% to 10% of the length l of the conductor crimping wings 12, 14.

[0117] 13. The crimping terminal according to any one of the preceding embodiments, wherein the crimping wings 12, 14 comprise chamfers 19 along their upper edges 13.

[0118] 14. The crimping terminal according to embodiment 13, wherein the chamfer 19 is inclined at an angle β relative to the plane 15 of the crimping wings 12 , 14 .

Claims

1. A voltage connection terminal (1), the voltage connection terminal (1) being used to connect to a conductor (32) of a cable (30), the cable (30) having an insulating portion (34) surrounding the conductor (32), the voltage connection terminal (1) comprising a conductor connection portion (10), wherein: The conductor connecting part (10) comprises conductor crimping wings (12, 14) for crimping onto the conductor (32) of the cable (30), wherein, in a non-crimped state, each of the conductor crimping wings (12, 14) has at least one progressive portion (40), the progressive portion (40) having a height (h(L)) that increases continuously in a longitudinal direction (L) toward an end (36) of the conductor (32) to be crimped, wherein the height (h(L)) of the progressive portion (40) increases non-linearly, and wherein the progressive portion (40) extends along at least 50% of the length (l) of the conductor crimping wings (12, 14).

2. The voltage contact terminal according to claim 1, wherein: The progressive portion (40) of at least one conductor crimping wing (12, 14) includes at least one notch (61).

3. The voltage contact terminal according to claim 2, wherein: The notch (61) comprises a depth (d) which is less than 50% of the height (h(L)) of the progressive portion at the location (62) of the notch.

4. The voltage connection terminal according to claim 2 or 3, wherein: The notch (61) comprises a notch width (w), and wherein the notch width (w) is less than 50% of the full length (l) of the conductor crimping wings (12, 14).

5. The voltage connection terminal according to any one of the preceding claims, wherein: The height (h(L)) of the progressive portion (40) increases linearly.

6. The voltage connection terminal according to any one of claims 1 to 4, wherein: The progressive portion (40) extends along at least 60%, preferably at least 70%, preferably at least 80% and preferably at least 90% of the length (1) of the conductor crimping wings (12, 14).

7. A voltage connection terminal according to any one of the preceding claims, wherein: In the non-crimped state, the conductor crimping wings (12, 14) include an upper edge (13) inclined at an angle (α) at ​​the progressive portion (40).

8. The voltage contact terminal according to claim 7, wherein: The angle (α) ranges from 2° to 30°, preferably from 2° to 20°, more preferably from 2° to 15°, and most preferably from 5° to 15°.

9. A voltage connection terminal according to any one of the preceding claims, wherein: The conductor connection part (10) further comprises a conductor connection bottom part (16), wherein the conductor crimping wings (12, 14) are integrally connected to the conductor connection bottom part (16) with their respective lower edges (11).

10. The voltage connection terminal according to any one of the preceding claims, further comprising an insulation connection portion (20) mechanically connected to the conductor connection portion (10), wherein: The insulation connection portion (20) comprises insulation crimping wings (22, 24), and the insulation crimping wings (22, 24) are used to be crimped onto the insulation (34) of the cable (30).

11. The voltage contact terminal according to claim 10, wherein: The insulation connection part (20) further comprises an insulation connection bottom part (26), wherein the insulation crimping wings (22, 24) are integrally connected to the insulation connection bottom part (26) with their respective lower edges (21).

12. A voltage connection terminal according to any one of the preceding claims, wherein: The transition between the upper edge (13) and the front edge (17) and / or the rear edge (18) of the conductor crimping wings (12, 14) is rounded.

13. The voltage contact terminal according to claim 12, wherein: The transition between the upper edge (13) and the rear edge (18) and / or the front edge (17) of the conductor crimping wing (12, 14) is rounded with a radius (r1, r2), respectively, and the range of the radius is preferably 3% to 20% of the length (l) of the conductor crimping wing (12, 14), more preferably 5% to 20% or most preferably 5% to 10%.

14. A voltage connection terminal according to any one of the preceding claims, wherein: The conductor crimping wings (12, 14) include chamfers (19) along their upper edges (13).

15. The voltage contact terminal according to claim 14, wherein: The chamfer (19) is inclined at an angle (β) relative to the plane (15) of the conductor crimping wings (12, 14).

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