A crimp-free double-ended terminal

Abstract

The application discloses a crimp-free double-head wiring terminal, which comprises a metal sleeve, a driving mechanism and two elastic wire fixing mechanisms. The inside of the metal sleeve is formed with a cylindrical mounting cavity. The two ends of the mounting cavity are respectively formed with circular truncated cone-shaped limiting cavities, and the two limiting cavities are seamlessly connected with the two ends of the mounting cavity. The driving mechanism is arranged in the mounting cavity, and the driving mechanism comprises a power element arranged towards the two limiting cavities. The two elastic wire fixing mechanisms are respectively arranged in the two limiting cavities. The elastic wire fixing mechanism comprises an elastic self-locking element and an elastic element. The elastic self-locking element is used for connecting and locking a wire body. The elastic element is arranged between the power element and the elastic self-locking element. The elastic element can drive the elastic self-locking element to move in the limiting cavity towards a direction with a smaller radius under the pushing of the power element, so as to lock the wire body. The application can effectively connect the electric wire without crimping.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power accessories, and particularly to a crimp-free double-head wiring terminal. BACKGROUND

[0002] In the technical field of power cables, wiring terminals are usually used as structures for electrical connection of power equipment connection, electrical equipment, and the like. As a commonly used type of wiring terminal, a double-head wiring terminal needs to be connected at both ends. However, the double-head wiring terminal currently used adopts a crimping method to lock the wire after the wire is connected, which is not only low in efficiency but also easy to damage the wiring terminal, resulting in the wiring terminal becoming a disposable accessory and causing serious waste of resources. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a crimp-free double-head wiring terminal, which can solve the above problems in the prior art and reduce the crimping process while ensuring that the wires connected at both ends are stably locked with the terminal.

[0004] To achieve the above purpose, the following technical solutions are adopted in the present application:

[0005] On the one hand, a crimp-free double-head wiring terminal is provided, which comprises a metal sleeve, an installation cavity in the form of a cylinder is formed in the inside of the metal sleeve, two limit cavities in the form of a circular truncated cone are respectively formed at both ends of the installation cavity, and the two limit cavities are seamlessly connected with both ends of the installation cavity.

[0006] A driving mechanism is arranged in the installation cavity, and the driving mechanism comprises a power member arranged towards the two limit cavities.

[0007] Two elastic wire fixing mechanisms are respectively arranged in the two limit cavities, the elastic wire fixing mechanism comprises an elastic self-locking member and an elastic member, the elastic self-locking member is used to connect and lock the wire body, the elastic member is arranged between the power member and the elastic self-locking member, the elastic member can drive the elastic self-locking member to move in the limit cavity towards the direction of smaller radius under the pushing of the power member, and then lock the wire body.

[0008] Further, the driving mechanism further comprises a base, the two power members are respectively arranged on both sides of the base, and the two ends of each power member are protruding.

[0009] Further, the power member comprises a hinged rod and an abutting plate, one end of the hinged rod is elastically hinged to the base, the other end of the hinged rod abuts against the abutting plate, the abutting plate abuts against the elastic member, the hinged rod makes the abutting plate always have a tendency to move towards the elastic member.

[0010] Further, the base is provided with a hinge groove, both sides of the hinge groove are provided with a rotating hole, the hinge rod is provided with a rotating shaft matched with the rotating hole, and a compression spring is arranged between the rotating hole and the rotating shaft, so that the rotating shaft always has a tendency to rotate towards the abutting plate.

[0011] Further, a guide shell is further included, the guide shell covers the driving mechanism and is provided with a guide hole matched with the abutting plate.

[0012] Further, the guide shell is provided with a limiting groove matched with the base.

[0013] Further, the outer circumferential surface of the metal sleeve is provided with an insulating shell.

[0014] Further, a locking rod is further included, the locking rod passes through the insulating shell, the metal sleeve, the guide shell and the base and is locked.

[0015] Further, both ends of the metal sleeve are provided with a limiting shell matched with the elastic self-locking part.

[0016] Further, the elastic self-locking part includes a self-locking part and a wire wrapping part, the wire wrapping part is used for wrapping a wire body and is slidingly installed in the self-locking part, and the wire wrapping part is in abutment with the elastic part.

[0017] The application has the following beneficial effects: in use, the wire body is inserted into the elastic self-locking part from the limiting cavity at both ends of the metal sleeve, the elastic self-locking part is compressed by the elastic part under the driving of the wire body and moves towards the direction of the larger radius of the limiting cavity, so that the wire body can be completely covered by the elastic self-locking part, when the force acting on the wire body is removed, the elastic self-locking part can be driven to move towards the direction of the smaller radius of the limiting cavity under the driving of the power part and the compression of the elastic part, since the limiting cavity is in the shape of a truncated cone, when the elastic self-locking part moves towards the direction of the smaller radius, the inner wall of the limiting cavity will contract against the elastic self-locking part, further locking the wire body, preventing the wire body from loosening and falling off during use, the wire body locking structure can realize the stable connection between the wire body and the terminal without the process of crimping, can prevent the terminal from being damaged, prolong the service life, can be recycled and avoid the waste of resources. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described in detail below according to the drawings and embodiments.

[0019] Figure 1 The whole structure of the crimp-free double-head terminal is shown in the embodiment of the application;

[0020] Figure 2An exploded schematic view of the crimp-free double-head terminal according to the embodiment of the present application;

[0021] Figure 3 A top view of the crimp-free double-head terminal according to the embodiment of the present application;

[0022] Figure 4 A top view of the crimp-free double-head terminal according to the embodiment of the present application Figure 3 A cross-sectional view at A-A;

[0023] Figure 5 A top view of the metal sleeve according to the embodiment of the present application;

[0024] Figure 6 A top view of the crimp-free double-head terminal according to the embodiment of the present application Figure 5 A cross-sectional view at B-B;

[0025] Figure 7 A structural schematic view of the driving mechanism according to the embodiment of the present application;

[0026] Figure 8 An exploded schematic view of the driving mechanism according to the embodiment of the present application.

[0027] In the figure: 1, metal sleeve; 101, mounting cavity; 102, limiting cavity; 2, driving mechanism; 201, power piece; 202, base; 2011, hinged rod; 2012, abutting plate; 2013, rotating shaft; 2021, hinged groove; 2022, rotating hole; 3, elastic wire fixing mechanism; 301, elastic self-locking piece; 302, elastic piece; 3011, self-locking part; 3012, wire sleeving part; 4, insulating shell; 5, guide shell; 6, locking rod; 7, limiting shell. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application are described in further detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, unless otherwise explicitly specified and limited, the terms “connected” “connected” “fixed” should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless specifically stated and limited otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Under", "below" and "under" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0031] As shown in Figures 1-8 The embodiment provides a crimp-free double-head terminal, which comprises a metal sleeve 1, a driving mechanism 2 and two elastic wire fixing mechanisms 3. The metal sleeve 1 is internally provided with a cylindrical mounting cavity 101, and the two ends of the mounting cavity 101 are respectively provided with circular truncated cone-shaped limiting cavities 102, and the two limiting cavities 102 are seamlessly connected with the two ends of the mounting cavity 101. The driving mechanism 2 is arranged in the mounting cavity 101, and the driving mechanism 2 comprises a power member 201 arranged towards the two limiting cavities 102. The two elastic wire fixing mechanisms 3 are respectively arranged in the two limiting cavities 102, and the elastic wire fixing mechanism 3 comprises an elastic self-locking member 301 and an elastic member 302. The elastic self-locking member 301 is used for connecting and locking a wire body. The elastic member 302 is arranged between the power member 201 and the elastic self-locking member 301. The elastic member 302 can drive the elastic self-locking member 301 to move in the limiting cavity 102 towards a direction with a smaller radius under the pushing of the power member 201, so as to lock the wire body.

[0032] Based on the above scheme, the cylindrical mounting cavity 101 in the middle of the metal sleeve 1 is connected to the limiting cavity 102 at both ends, the limiting cavity 102 is in the shape of a circular truncated cone, the radius of the limiting cavity 102 gradually decreases from the connection position with the mounting cavity 101 to the direction away from the mounting cavity 101, the elastic self-locking piece 301 can slide in the limiting cavity 102, when the elastic self-locking piece 301 moves to a position with a small radius of the limiting cavity 102, the inner wall of the limiting cavity 102 will contract against the elastic self-locking piece 301, and vice versa, when the elastic self-locking piece 301 moves to a position with a large radius of the limiting cavity 102, there is a gap between the inner wall of the limiting cavity 102 and the elastic self-locking piece 301, and the elastic self-locking piece 301 returns to the original state; during use, the two wire bodies are inserted into the elastic self-locking piece 301 from the limiting cavities 102 on both sides, at this time, a force will be applied to the wire body, pushing the elastic self-locking piece 301 to move in the limiting cavity 102 to a position with a large radius, the elastic self-locking piece 301 will be compressed against the elastic piece 302, until the elastic piece 302 is compressed to the bottom, and the wire body is completely inserted into the elastic self-locking piece 301, at this time, the elastic self-locking piece 301 can cover the wire body to the maximum extent, playing a role in preliminary locking and positioning, then the force acting on the wire body is removed, since the power piece 201 has a force acting in the direction of the elastic piece 302, it can move in the direction of the elastic self-locking piece 301 against the elastic piece 302, at the same time, the elastic force of the compressed elastic piece 302 also pushes the elastic self-locking piece 301 to move in the limiting cavity 102 to a position with a small radius, when the elastic self-locking piece 301 moves to a position with a small radius, the inner wall of the limiting cavity 102 will contract against the elastic self-locking piece 301, and the contraction of the elastic self-locking piece 301 will squeeze the wire body inside, the friction between the elastic self-locking piece 301 and the wire body increases, which can stably lock the wire body and prevent the wire body from loosening and falling off during use. By adopting this wire locking structure, the process of crimping is omitted, and stable connection between the wire body and the terminal can be achieved, at the same time, damage to the terminal can be prevented, the service life of the terminal is prolonged, and it can be recycled, avoiding waste of resources.

[0033] It is worth mentioning that in the above scheme, the wire body inserted into the elastic self-locking piece 301 has at least two states, in order to facilitate understanding, the right side of the limiting cavity 102 with a large radius is defined as the right side, and the left side with a small radius is defined as the left side, that is, the first state is that the elastic self-locking piece 301 moves to the rightmost side of the limiting cavity 102 to a preliminary fixed state, and the second state is that the elastic self-locking piece 301 moves to the leftmost side of the limiting cavity 102 to a final fixed state, the two states can correspond to different use scenarios, the first state can be used for use scenarios with low requirements for wire body stability, that is, without the elastic piece 302 and the driving mechanism 2 and other components, the wiring speed will be faster; and the second state can be used for use scenarios with high requirements for wire body stability, to ensure that the wire body does not loosen during use.

[0034] In addition, it should be noted that the elastic self-locking member 301, the elastic member 302 and the driving mechanism 2 are all conductive, that is, the wires connected at both ends can complete the transmission of current through the internal structure, and are sleeved with a metal sleeve 1, and the conductivity of the metal sleeve 1 further ensures the current conduction of the wires at both ends.

[0035] In some embodiments, the driving mechanism 2 further comprises a base 202, and the two power members 201 are respectively installed on both sides of the base 202 and protrude at both ends. The power member 201 comprises a hinged rod 2011 and an abutting plate 2012. One end of the hinged rod 2011 is elastically hinged to the base 202, and the other end is in abutment with the abutting plate 2012. The abutting plate 2012 is in abutment with the elastic member 302. The hinged rod 2011 makes the abutting plate 2012 always have a tendency to move towards the elastic member 302. A hinged groove 2021 is formed in the base 202. Rotation holes 2022 are formed in the sidewalls of the hinged groove 2021. A rotation shaft 2013 protruding from the hinged rod 2011 is connected with the rotation holes 2022. A compression spring is arranged between the rotation hole 2022 and the rotation shaft 2013. The compression spring makes the rotation shaft 2013 always have a tendency to rotate towards the abutting plate 2012. In this scheme, one end of the abutting rod, from which the rotation shaft 2013 protrudes, is inserted into the hinged groove 2021, and the rotation shaft 2013 is respectively inserted into the rotation hole 2022. The abutting rod rotates around the rotation shaft 2013 as the fulcrum. The other end of the abutting rod is in abutment with the abutting plate 2012. When the abutting rod rotates, it can move towards the elastic member 302 against the abutting plate 2012, thereby driving the elastic self-locking member 301 to move in the direction of smaller radius in the limiting cavity 102 in cooperation with the elastic member 302. In addition, the hinged groove 2021 also plays a role in limiting rotation, so that the hinged rod 2011 can only rotate in a designated direction, preventing it from deviating from the rotation.

[0036] Meanwhile, the end of the abutting rod in abutment with the abutting plate 2012 is spherical, and the abutting plate 2012 is in the shape of a T. The position with a large area of the abutting plate 2012 is in abutment with the elastic member 302, and the position with a small area is in abutment with the spherical end of the abutting rod. This can not only ensure the power transmission between the abutting rod and the abutting plate 2012, but also ensure that the contact area between the abutting plate 2012 and the elastic member 302 is large enough to completely abut the elastic member 302, thereby driving the elastic self-locking member 301 to move together.

[0037] Further, a guide shell 5 is further included, which covers the driving mechanism 2 and is provided with a guide hole for cooperating with the abutting plate 2012. The guide shell 5 supports and protects the driving mechanism 2, and the guide hole can cooperate with the abutting plate 2012 to guide the abutting plate 2012 to move in a specified direction. The guide hole needs to be opposite to the elastic member 302 and the elastic self-locking member 301, so that the abutting plate 2012 can move the elastic member 302 and the elastic self-locking member 301 along a straight line.

[0038] Further, the guide shell 5 is provided with a limiting groove for cooperating with the base 202. The base 202 can be accurately installed on the guide shell 5 through the limiting groove, which plays a role of positioning and fastening, ensures the stable installation of the base 202, and further ensures the stable operation of the power member 201.

[0039] Meanwhile, the guide shell 5 is further provided with a slot for cooperating with the power member 201, which facilitates the assembly of the power member 201.

[0040] In order to ensure the safety of the terminal, the metal sleeve 1 is provided with an insulating shell 4, which plays a role of isolating current and avoids electric shock in use, thereby ensuring the safety of the operator.

[0041] Optionally, a locking rod 6 is further included, which passes through the insulating shell 4, the metal sleeve 1, the guide shell 5 and the base 202 and is locked. The insulating shell 4, the metal sleeve 1, the guide shell 5 and the base 202 are provided with a hole corresponding to the locking rod 6 along the same straight line. The locking rod 6 passes through the insulating layer, the metal sleeve 1, the guide shell 5 and the base 202 from outside to inside to complete the assembly, which can stably assemble the four components together and plays a role of accurate positioning and installation.

[0042] Preferably, the metal sleeve 1 is provided with a limiting shell 7 at both ends for cooperating with the elastic self-locking member 301. In order to prevent the elastic self-locking member 301 from being separated from the metal sleeve 1 during movement, the limiting shell 7 is arranged at the end of the metal sleeve 1. The inner circumferential wall of the limiting shell 7 is circumferentially provided with a limiting plate. When the elastic self-locking member 301 moves to abut against the limiting plate, the elastic self-locking member 301 cannot move further, which prevents it from being separated. Moreover, the limiting plate and the elastic member 302 and the elastic self-locking member 301 abut against both ends of the elastic self-locking member 301 to stabilize the position of the elastic self-locking member 301 in the limiting cavity 102.

[0043] In addition, the length of the metal sleeve 1 is longer than the insulating shell 4, the metal sleeve 1 and the insulating shell 4 are symmetrical about the midpoint line, that is, the two ends of the metal sleeve 1 protrude out of the insulating shell 4, the limiting shell 7 is spliced with the insulating shell 4 and is sleeved on the two ends of the metal sleeve 1, simply speaking, the limiting shell 7 also belongs to the insulator, and the limiting shell 7 and the insulating shell 4 are seamlessly connected, so that the integrity of the surface of the terminal is ensured. The limiting shell 7 and the insulating shell 4 can be connected in a clamping manner, so that the convenience of assembly is improved.

[0044] In some embodiments, the elastic self-locking piece 301 includes a self-locking part 3011 and a wire wrapping part 3012, the wire wrapping part 3012 is used for wrapping the wire body and is slidingly installed in the self-locking part 3011, and the wire wrapping part 3012 abuts against the elastic piece 302. Since the exposed copper wires of the wire body are scattered, the wire wrapping part 3012 can wrap the scattered copper wires, and then pass out to the right in the self-locking part 3011, that is, the wire wrapping part 3012 can pass out from the right side of the self-locking part 3011, and when the wire wrapping part 3012 moves to the left, it is locked by the structure of the self-locking part 3011, so that the wire wrapping part 3012 cannot move to the left at will.

[0045] Specifically, the self-locking part 3011 also has a circular truncated cone structure, and the size of the self-locking part 3011 is reduced in proportion to the size of the limiting cavity 102, the outer wall of the self-locking part 3011 abuts against the inner wall of the limiting cavity 102, and since the self-locking part 3011 has elasticity, when the self-locking part 3011 moves to the left, it can be extruded and contracted by the inner wall of the limiting cavity 102, thereby clamping the wire wrapping part 3012 to prevent it from moving to the left.

[0046] More specifically, in order to cooperate with the locking of the self-locking part 3011 to the wire wrapping part 3012, a plurality of taper blocks are arranged in the self-locking part 3011, the taper blocks are arranged obliquely inward from left to right, so that the wire wrapping part 3012 is not hindered when it slides to the right, and a guiding effect is also provided, so that the wire wrapping part 3012 can smoothly move to the right, and when the wire wrapping part 3012 moves to the left, it will be hindered by the taper blocks, the taper blocks will abut against the wire wrapping part 3012, so that the wire wrapping part 3012 cannot smoothly move to the left, and the elastic contraction of the self-locking part 3011 can lock the wire wrapping part 3012 and the copper wires in the wire wrapping part 3012, preventing loosening.

[0047] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", and the like orientation or position relationship are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0048] In the description of the specification, the description of the terms "one embodiment", "an example", and the like refers to the specific features, structures, materials, or characteristics described in connection with the embodiment or example. In the specification, the illustrative representation of the above terms does not necessarily refer to the same embodiment or example.

[0049] In addition, it should be understood that, although the specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0050] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these ways will fall within the scope of protection of the present application.

Claims

1. A crimp-free double ended terminal, characterized by, The utility model relates to a metal sleeve (1) is formed with the installation cavity (101) of cylindrical shape in the inside end, and the two ends of installation cavity (101) are formed with the limit cavity (102) of circular truncated cone shape respectively, and two limit cavities (102) are seamless with the two ends of installation cavity (101) respectively. The utility model relates to a drive mechanism (2) is arranged in installation cavity (101), and drive mechanism (2) includes the power part (201) that sets up towards two limit cavities (102) direction. Two elastic fixed line mechanisms (3) are installed in two limit cavities (102) respectively, and elastic fixed line mechanism (3) includes elastic self-locking part (301) and elastic part (302), and elastic self-locking part (301) is used for connecting and locking wire body, and elastic part (302) is arranged between power part (201) and elastic self-locking part (301), and elastic part (302) can drive elastic self-locking part (301) to move in the limit cavity (102) towards the direction of smaller radius under the impetus of power part (201), and then lock wire body. Drive mechanism (2) further includes base (202), and two power parts (201) are installed on both sides of base (202) respectively, and are respectively provided with both ends. Power part (201) includes hinged lever (2011) and abutting plate (2012), one end of hinged lever (2011) is elastically hinged to base (202), and the other end is in abutment with abutting plate (2012), and abutting plate (2012) is in abutment with elastic part (302), and hinged lever (2011) makes abutting plate (2012) always have the tendency of moving towards elastic part (302). Base (202) is provided with hinged groove (2021), and both side walls of hinged groove (2021) are provided with rotating hole (2022), and hinged lever (2011) is provided with rotating shaft (2013) matched with rotating hole (2022), and compression spring is arranged between rotating hole (2022) and rotating shaft (2013), and compression spring makes rotating shaft (2013) always have the tendency of rotating towards abutting plate (2012). Further comprising a guide shell (5), the guide shell (5) is covered in the drive mechanism (2), and is provided with a guide hole matched with the abutting plate (2012) for guiding.

2. The compression-less crimped double header terminal according to claim 1, characterized in that, The guide shell (5) is provided with a limiting groove matched with the base (202) for limiting.

3. The compression-less insulated crimpless double ended terminal of claim 2, wherein, The outer circumferential surface of the metal sleeve (1) is provided with an insulating shell (4).

4. The compression-less insulated crimpless lug terminal of claim 2, wherein, Further comprising a locking rod (6), the locking rod (6) passes through the insulating shell (4), the metal sleeve (1), the guide shell (5) and the base (202) and is locked.

5. The compression-less, double-ended terminal of claim 4, wherein, The two ends of the metal sleeve (1) are provided with a limiting shell (7) matched with the elastic self-locking part (301) for limiting.

6. The insulation displacement splicing connector according to any one of claims 1 to 5, characterized by ​ 7. The crimp-free double header terminal according to any one of claims 1-5, wherein The elastic self-locking piece (301) comprises a self-locking part (3011) and a sleeve wire part (3012), the sleeve wire part (3012) is used for wrapping a wire body and is slidingly installed in the self-locking part (3011), and the sleeve wire part (3012) abuts against the elastic piece (302).

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