Wiring terminal and electrical equipment

Abstract

The invention discloses a wiring terminal and electrical equipment, and belongs to the technical field of electrics. In the wiring terminal, a first elastic piece is movably arranged in a shell and comprises an elastic main body with a cavity and a wire clamping structure arranged on one side of the elastic main body; the plug sleeve part is fixedly arranged in the shell, is at least partially positioned in the cavity of the elastic main body, and is used for being matched with the wire clamping structure to clamp a cable; the handle is used for driving the first elastic piece to move. A first wire inlet is formed in the shell, a second wire inlet is formed in the side, facing the first wire inlet, of the elastic body, and when the first elastic piece is in a natural state, the central axis of the first wire inlet and the central axis of the second wire inlet are arranged in a staggered mode in the movement direction of the first elastic piece. The wiring terminal can be compatible with a single-core hard wire and a multi-core flexible wire, the cable fixing effect is excellent, damage caused by excessive pressure applied to the cable by the elastic piece can be avoided, the handle directly acts on the elastic main body, and the force applied to the handle by a user can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, in particular to a wiring terminal and an electrical device. Background Art

[0002] Terminal blocks are used to achieve electrical connection between switch-type electrical equipment and external cables. Especially for wall switch products, the use of terminal blocks significantly improves their installation efficiency.

[0003] In the related art, in order to make the terminal block compatible with single-core hard wires and multi-core soft wires, the terminal block usually includes a terminal seat and a spring sheet and a handle assembled thereon. The handle is used to drive the spring sheet to move so as to form a gap between the spring sheet and the terminal seat to allow the cable to be inserted. The spring sheet clamps the cable by its end. However, due to the soft characteristics of the multi-core soft wire, the spring sheet is usually required to have a strong elastic force, which not only easily increases the probability of the multi-core soft wire being crushed, but also requires the user to apply a large force to the handle to complete the handle operation. Summary of the invention

[0004] In view of this, the present invention provides a wiring terminal and an electrical device, which can solve the technical problems existing in the related art. Specifically, it includes the following technical solutions:

[0005] On the one hand, a terminal block is provided, which includes a shell, a first elastic member, a plug sleeve and a handle, wherein the first elastic member is movably arranged inside the shell, and the first elastic member includes an elastic body with a cavity and a wire clamping structure arranged on one side of the elastic body; the plug sleeve is fixedly arranged inside the shell and at least partially located in the cavity of the elastic body, and the plug sleeve is used to cooperate with the wire clamping structure to clamp the cable; the handle is used to drive the first elastic member to move; wherein, the shell has a first wire inlet, and the elastic body has a second wire inlet on a side facing the first wire inlet, and when the first elastic member is in a natural state, the central axis of the first wire inlet and the central axis of the second wire inlet are staggered along the movement direction of the first elastic member.

[0006] In some possible implementations, the handle is rotatably connected to the housing, and the handle abuts against a side of the elastic body away from the wire clamping structure.

[0007] In some possible implementations, a fixed block is fixedly disposed in the cavity of the elastic body, and the wiring terminal further includes a second elastic member, the second elastic member is connected between the plug-in kit and the fixed block, and the extension direction of the second elastic member is consistent with the driving direction of the handle.

[0008] In some possible implementations, the elastic body has an open side, the bite spring is connected to the first end of the open side of the elastic body, and the compression spring is connected to the second end of the open side of the elastic body; wherein, along the insertion direction of the cable, the first end and the second end of the elastic body are arranged in sequence at intervals.

[0009] In some possible implementations, the wire clamping structure includes a compression spring and a bite spring arranged at intervals along the plugging and unplugging direction of the cable; the bite spring is arranged at an angle, the first end of the bite spring is connected to the second end of the elastic body, the second end of the bite spring is located in the cavity of the elastic body, and the second end of the bite spring is closer to the compression spring than its first end.

[0010] In some possible implementations, the pressing spring sheet includes a first inclined section and a pressing section connected in sequence, an end of the first inclined section away from the pressing section is fixedly connected to the second end of the elastic body, the pressing section is located in the cavity of the elastic body, and the pressing section is arranged adjacent to the bite spring sheet.

[0011] In some possible implementations, the pressing spring piece also includes a second inclined section, a first end of the second inclined section is fixedly connected to the pressing section, a second end of the second inclined section extends in a direction away from the first inclined section, and there is a gap between the second inclined section and the bite spring piece.

[0012] In some possible implementations, the spacing between the second inclined section and the bite spring sheet satisfies the following conditions: when the first elastic member is in a natural state or the wire diameter of the cable is smaller than a wire diameter threshold, the second inclined section does not contact the bite spring sheet; and when the wire diameter of the cable is greater than or equal to the wire diameter threshold, the second end of the second inclined section abuts against the bite spring sheet.

[0013] In some possible implementations, the side of the elastic body facing the first wire inlet also has a first avoidance opening, and the first avoidance opening is connected to the second wire inlet; the first end of the plug-in kit distributed along the cable plug-in and pull-out direction is fixedly connected to the shell, and the plug-in kit passes through the first avoidance opening and extends into the cavity of the elastic body.

[0014] In some possible implementations, the elastic body has a second avoidance opening on one side facing away from the first cable inlet, the plug sleeve passes through the second avoidance opening, and the second end of the plug sleeve distributed along the cable plugging and unplugging direction is fixedly connected to the shell.

[0015] In some possible implementations, the shell has a accommodating cavity and a limiting cavity which are arranged in sequence and connected along the movement direction of the first elastic member; the accommodating cavity is used to accommodate the first elastic member, and the height dimension of the limiting cavity gradually decreases along the direction away from the accommodating cavity, and the maximum height dimension of the limiting cavity is less than or equal to the height dimension of the first elastic member, wherein the height dimension is the dimension along the cable plugging and unplugging direction.

[0016] In some possible implementations, the shell includes: a pressure plate and a base, the pressure plate is connected to the open end of the base; wherein the pressure plate is provided with a second pressure block, the second pressure block has an inclined second limiting surface, the base is provided with a first pressure block, the first pressure block has an inclined first limiting surface, and the gap between the second limiting surface and the first limiting surface forms the limiting cavity.

[0017] In some possible implementations, the surface of the plug sleeve facing the wire clamping structure has a wire groove, which is used to accommodate cables, and / or the surface of the plug sleeve facing the wire clamping structure on the side close to the first wire inlet has an arc-shaped protrusion, and the arc-shaped protrusion smoothly transitions with the surface of the plug sleeve.

[0018] On the other hand, an electrical device is provided, characterized in that the electrical device comprises a device housing and a wiring terminal arranged inside the device housing, and the wiring terminal is as described above.

[0019] The beneficial effects of the technical solution provided by the embodiment of the present invention include at least:

[0020] The wiring terminal provided by the embodiment of the present invention limits the structure of the first elastic member and its matching mode with the handle, the plug-in kit and the housing. Under the driving action of the handle, the second wire inlet and the first wire inlet can move from the staggered position to the coaxial connection position, so that the cable, whether it is a single-core hard wire or a multi-core soft wire, can be easily and smoothly inserted into the cavity of the elastic body, so that the wiring terminal provided by the embodiment of the present invention can accommodate both single-core hard wire and multi-core soft wire. In terms of fixing the cable, the second wire inlet and the first wire inlet are staggered, so that after the cable is inserted into place, the cable is not only clamped by the wire clamping structure, but also, based on the relevant technology, the cable is further clamped by the second wire inlet, so that the wiring terminal fixes the cable at multiple points. With such a setting, there is no need to set the elastic force of the wire clamping structure too large to achieve the purpose of preventing the cable from loosening. On the basis of ensuring the cable fixing effect, it can also effectively avoid the wire clamping structure from applying excessive pressure to the cable to cause damage. In addition, by allowing the handle to directly act on the elastic body, the elastic body transfers the force of the handle to the wire clamping structure, and the lever arm is increased, which helps to reduce the force applied by the user to the handle, allowing the user to easily perform handle driving operations while further avoiding cable damage caused by improper handle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A combination diagram of an exemplary connection terminal provided by an embodiment of the present invention;

[0023] Figure 2 An exploded view of an exemplary terminal block provided by an embodiment of the present invention;

[0024] Figure 3 A diagram showing an exemplary combination of a first elastic member and an insert sleeve provided in an embodiment of the present invention;

[0025] Figure 4 A diagram showing an exemplary combination of a first elastic member and a base provided in an embodiment of the present invention;

[0026] Figure 5 A diagram showing an exemplary combination of a first elastic member and a handle provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of an exemplary wiring terminal for fixing a cable provided by an embodiment of the present invention;

[0028] Figure 7 An exemplary combination diagram of a first elastic member, a second elastic member and an inserting member provided in an embodiment of the present invention;

[0029] Figure 8 A cross-sectional view of an exemplary terminal block provided by an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of an exemplary plug-in kit provided in an embodiment of the present invention;

[0031] Fig.10 A schematic structural diagram of another exemplary plug-in kit provided in an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the structure of a wiring terminal before a cable is inserted, provided in an embodiment of the present invention;

[0033] Fig.12 A schematic diagram of the structure of the wiring terminal when the cable is inserted into place according to an embodiment of the present invention;

[0034] Fig.13 A schematic diagram of the structure of the wiring terminal when the cable is inserted into place and the handle is released according to an embodiment of the present invention.

[0035] The reference numerals represent:

[0036] 1. Shell; 101. Accommodating cavity; 102. Limiting cavity; 103. Shaft groove;

[0037] 11. Pressing plate; 111. Second pressing block; 1110. Second limiting surface; 112. Second positioning groove;

[0038] 12. base; 120. first line inlet; 121. first pressing block; 1210. first limiting surface; 122. first positioning groove;

[0039] 2. a first elastic member;

[0040] 21. elastic body; 210. cavity; 211. second line inlet; 212. first avoidance opening; 213. second avoidance opening;

[0041] 22, pressed spring piece; 221, first inclined section; 222, pressed section; 223, second inclined section;

[0042] 23. Engaging spring; 24. Fixing block;

[0043] 3. Plug-in kit; 31. Wire slot; 32. Arc-shaped protrusion;

[0044] 4. handle; 41. pressing part; 42. driving part; 43. rotating shaft;

[0045] 5. A second elastic member;

[0046] 001. Cables.

[0047] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", "length" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In view of the technical problem that the connection terminal has poor compatibility with single-core hard wires and multi-core soft wires in the related art, an embodiment of the present invention provides a connection terminal, as shown in the attached Figure 1 -Attached Figure 2 As shown, the terminal comprises a housing 1, a first elastic member 2, a plug sleeve 3 and a handle 4. The first elastic member 2 is movably arranged inside the housing 1. Figure 3 As shown, the first elastic member 2 includes an elastic body 21 having a cavity 210, and a wire clamping structure (for example, Figure 3 The example shows that the wire clamping structure includes a pressing spring piece 22 and a biting spring piece 23, and the pressing spring piece 22 and the biting spring piece 23 are arranged at intervals along the plugging and unplugging direction of the cable. The plug-in kit 3 is fixedly arranged inside the housing 1 and at least partially located in the cavity 210 of the elastic body 21. The plug-in kit 3 is used to cooperate with the wire clamping structure (i.e., the pressing spring piece 22 and the biting spring piece 23) to clamp the cable; the handle 4 is used to drive the first elastic member 2 to move.

[0051] Further integration Figure 4As shown, the shell 1 has a first wire inlet 120, and the side of the elastic body 21 facing the first wire inlet 120 has a second wire inlet 211. When the first elastic member 2 is in a natural state, the central axis of the first wire inlet 120 and the central axis of the second wire inlet 211 are staggered along the movement direction of the first elastic member 2.

[0052] In combination with the above-mentioned wiring terminal solution involved in the embodiment of the present invention, the working principle of the wiring terminal is as follows:

[0053] When the wiring terminal is not inserted into the cable, the first elastic member 2 is in a natural state, and the central axis of the first wire inlet 120 is staggered with the central axis of the second wire inlet 211 (see Figure 4 ), that is, the central axes of the first cable inlet 120 and the second cable inlet 211 do not coincide, and the second cable inlet 211 is only partially connected to the first cable inlet 120. Thus, after the cable is inserted into the first cable inlet 120, it cannot be freely inserted into the cavity 210 of the elastic body 21 through the second cable inlet 211.

[0054] When it is necessary to insert a cable into the terminal, the handle 4 is driven to drive the first elastic member 2 to move, and the moving first elastic member 2 drives the second wire inlet 211 of the elastic body 21 to coincide with the central axis of the first wire inlet 120 on the housing 1 (see Fig.11 ), at this time, the second wire inlet 211 is connected to the first wire inlet 120 as a whole, so that after the cable is inserted into the first wire inlet 120, it can be freely inserted into the cavity 210 of the elastic body 21 through the second wire inlet 211. Since the plug-in kit 3 is fixedly arranged inside the housing 1, and the wire clamping structure (such as the pressing spring piece 22 and the bite spring piece 23) moves with the elastic body 21, during the driving process of the handle 4, the wire clamping structure moves relative to the plug-in kit 3, so that the distance between the wire clamping structure and the plug-in kit 3 increases accordingly, so as to allow the cable to be smoothly inserted into the cavity 210 of the elastic body 21 (see Fig.12 ).

[0055] Continue to see Fig.13 After the cable is inserted into place, the handle 4 is released, and the first elastic member 2 resets based on its own elastic potential energy, and the terminal block finally moves as shown in FIG. Figure 6 The state shown. In this way, on the one hand, the second wire inlet 211 moves with the first elastic member 2 to reset and displace it with the first wire inlet 120 again, and at the wire inlet position, the cable is clamped based on the second wire inlet 211. On the other hand, the wire clamping structure resets and moves to the distance between it and the plug kit 3 to clamp the cable, so that the wire clamping structure clamps the cable, for example, this includes: the pressing spring piece 22 presses the cable, the biting spring piece 23 bites the cable, and finally, based on the fixing effect of the above three fixed points, the cable is stably fixed to the terminal.

[0056] In summary, the wiring terminal provided in the embodiment of the present invention is limited by the structure of the first elastic member 2 and the matching mode with the handle 4, the plug set 3 and the housing 1. Under the driving action of the handle 4, the second wire inlet 211 and the first wire inlet 120 can move from the staggered position to the coaxial connection position, so that the cable, whether it is a single-core hard wire or a multi-core soft wire, can be easily and smoothly inserted into the cavity 210 of the elastic body 21, so that the wiring terminal provided in the embodiment of the present invention can accommodate single-core hard wires and multi-core soft wires. In terms of the fixing of the cable, the second wire inlet 211 and the first wire inlet 120 are staggered, so that after the cable is inserted into place, the cable is not only clamped by the wire clamping structure, but also, based on the relevant technology, the cable is further clamped by the second wire inlet 211, thereby realizing the multi-point fixing of the cable by the wiring terminal. In this way, it is not necessary to set the elastic force of the wire clamping structure too large to achieve the purpose of preventing the cable from loosening. On the basis of ensuring the cable fixing effect, it can also effectively avoid the wire clamping structure from excessively pressuring the cable to cause damage.

[0057] In addition, by making the handle 4 act directly on the elastic body 21, the elastic body 21 transmits the force of the handle 4 to the pressing spring piece 22 and the bite spring piece 23, and the force arm is increased, which is beneficial to reduce the force applied by the user to the handle 4, so that the user can easily implement the handle 4 driving operation while further avoiding the cable damage problem caused by improper operation of the handle 4.

[0058] The shapes of the first cable inlet 120 and the second cable inlet 211 can be adapted to the shapes of the cables, as shown in the attached Figure 4 As shown, taking the cable as a cylindrical shape as an example, the first cable inlet 120 can be a circular hole shape, and the second cable inlet 211 can be a circular hole shape or a circular arc shape (such as a semicircular arc shape).

[0059] In some examples, when the first elastic member 2 is in a natural state, the distance between the central axis of the first cable inlet 120 and the central axis of the second cable inlet 211 may be 0.5 mm to 2 mm, for example, 1 mm.

[0060] In some examples, such as the attached Figure 5 -Attached Figure 6 As shown, the handle 4 is rotatably connected to the housing 1 , and the handle 4 abuts against a side of the elastic body 21 away from the pressing elastic sheet 22 and the biting elastic sheet 23 .

[0061] The handle 4 acts on the side of the elastic body 21 away from the wire clamping structure, that is, the pressing spring piece 22 and the biting spring piece 23, to drive the first elastic member 2 to move and bend and deform at the same time. For example, the first elastic member 2 moves in a direction perpendicular to the cable plugging and unplugging direction. Compared with the handle 4 directly acting on the pressing spring piece 22 and the biting spring piece 23 to make them bend and deform, the bending deformation of the first elastic member 2 is more labor-saving, which helps to reduce the force applied by the user to the handle 4, so that the user can easily drive the handle 4.

[0062] In particular, in the related art, since the handle 4 needs to apply a large force, when retracting the cable, it is easy for the cable to be retracted without being fully separated from the spring due to insufficient force applied by the handle 4. In this case, forced retraction may cause damage to the cable and the spring. The embodiment of the present invention effectively solves this problem by arranging the handle 4 as described above.

[0063] Figure 5 An exemplary embodiment of the handle 4 is illustrated, as shown in the attached Figure 5 As shown, the handle 4 includes: a pressing portion 41, a driving portion 42 connected to the pressing portion 41, and a rotating shaft 43 connected to the driving portion 42. For example, the rotating shaft 43 is connected to the upper end of the driving portion 42, and the housing 1 is provided with an axis groove 103 (see Figure 4 ), the handle 4 is assembled into the shaft groove 103 through its rotating shaft 43, so that the handle 4 can rotate relative to the housing 1.

[0064] When the handle 4 rotates, the driving portion 42 thereof has a displacement along the moving direction of the first elastic member 2, thereby driving the first elastic member 2 to move.

[0065] In some examples, the driving portion 42 is connected to a partial area of ​​the first side of the pressing portion 41, and another portion of the first side of the pressing portion 41 is suspended. The user can press the suspended area of ​​the pressing portion 41 to drive the handle 4 effortlessly.

[0066] In some examples, one side of the elastic body 21 away from the pressing spring piece 22 and the biting spring piece 23 is an arc-shaped structure (referred to as the arc-shaped side), and the surface of the driving portion 42 of the handle 4 that abuts against the arc-shaped side of the elastic body 21 is configured to have an arc-shaped groove to adapt to the arc-shaped side of the elastic body 21, thereby increasing the abutment area between the handle 4 and the elastic body 21 and further promoting labor-saving operation of the handle 4.

[0067] In some embodiments, as shown in Figure 6 and attached Figure 7 As shown, the wiring terminal provided in the embodiment of the present invention also includes a second elastic member 5, wherein a fixing block 24 is fixedly arranged in the cavity 210 of the elastic body 21, the second elastic member 5 is connected between the plug-in kit 3 and the fixing block 24, and the extension direction of the second elastic member 5 is consistent with the driving direction of the handle 4.

[0068] The second elastic member 5 can be a compression spring or a tension spring, and can be arranged on the side of the plug-in sleeve 3 away from the pressing spring piece 22 and the biting spring piece 23. Alternatively, the second elastic member 5 can also be arranged on the side of the plug-in sleeve 3 facing the pressing spring piece 22 and the biting spring piece 23.

[0069] For example, in the embodiment of the present invention, the second elastic member 5 can be arranged on the side of the plug-in kit 3 away from the pressing spring piece 22 and the biting spring piece 23 to prevent the second elastic member 5 from interfering with the insertion of the cable into the cavity 210 of the elastic body 21. By further arranging the second elastic member 5 to cooperate with the first elastic member 2, when the handle 4 drives the first elastic member 2 to move, the second elastic member 5 will also store elastic potential energy to promote the reset movement of the first elastic member 2. At the same time, the driving force of the handle 4 is transmitted to the pressing spring piece 22 and the biting spring piece 23 through the elastically deformed first elastic member 2 and the second elastic member 5, so that the force application operation on the handle 4 is more time-saving and labor-saving.

[0070] In the embodiment of the present invention, the arrangement scheme of the second elastic member 5 is not only used to promote the reset movement of the first elastic member 2, but further, the second elastic member 5 can also be arranged so that, in a natural state or in a pre-tightened state, the spacing between the pressing spring piece 22 and the bite spring piece 23 and the plug-in kit 3 is smaller than the wire diameter of the cable 001, thereby ensuring that the cable 001 is stably clamped between the pressing spring piece 22 and the bite spring piece 23 and the plug-in kit 3.

[0071] The embodiment of the present invention defines the plugging and unplugging direction of the cable as the height direction of the terminal block. In the related art, in order to ensure that the pressure value of the spring sheet is large enough to prevent the cable from loosening, the height of the spring sheet is made larger so that its force arm is longer, for example, the height is designed to be 11mm to 13mm. The terminal block provided by the embodiment of the present invention fixes the cable 001 at multiple points, and the driving force of the handle 4 is converted into the elastic force of the first elastic member 2 and the second elastic member 5, which greatly improves the anti-loosening effect of the cable, and the elastic force requirements of the pressing spring sheet 22 and the biting spring sheet 23 are relatively low, so there is no need to design the height of the terminal block (including the height of the first elastic member 2) to be larger, so the height of the housing 1 can be designed to be lower, for example, the height of the base 12 described below is designed to be lower, and the structural thinning of the terminal block is realized. In this way, when the terminal block is assembled into an electrical device, such as a switch product, its space occupancy rate in the electrical device is reduced (there is enough space to store wires), and it is easy to install.

[0072] In conjunction with the above-mentioned solution of the connecting terminal, the structural arrangement and function of each component therein are further explained.

[0073] In some examples, the wire clamping structure includes a pressing spring piece 22 and a biting spring piece 23 arranged at intervals along the plugging and unplugging direction of the cable, so that when the cable is clamped by the wire clamping structure, specifically, the cable 001 is pressed by the pressing spring piece 22 and bitten by the biting spring piece 23.

[0074] In the embodiment of the present invention, a cavity 210 is provided in the elastic body 21 as a deformation cavity to allow the elastic body 21 to undergo elastic deformation. The cavity 210 of the elastic body 21 can be closed or semi-open along its circumferential direction. Figure 3 The cavity 210 is illustrated as being semi-open. Figure 3 As shown, the elastic body 21 has an open side, the bite spring piece 23 is connected to the first end of the open side of the elastic body 21, and the press spring piece 22 is connected to the second end of the open side of the elastic body 21; wherein, along the insertion direction of the cable, the first end and the second end of the elastic body 21 are sequentially arranged at intervals. For example, the elastic body 21 with an open side can be a U-shaped structure.

[0075] The open side of the elastic body 21 is also the opening of the cavity 210. By adopting the elastic body 21 with an open design, on the one hand, it is convenient for the elastic body 21, the pressing spring piece 22 and the biting spring piece 23 to be prepared by an integrated molding process. On the other hand, it is convenient to increase the deformation amplitude of the elastic body 21, reduce its deformation difficulty and increase its stored elastic potential energy. Moreover, as mentioned above, along the insertion direction of the cable, the biting spring piece 23 and the pressing spring piece 22 are arranged in sequence at intervals, that is, along the removal direction of the cable, the pressing spring piece 22 and the biting spring piece 23 are arranged in sequence at intervals, and the biting spring piece 23 is located downstream of the cable loosening path, which is more beneficial to the anti-loosening effect of the cable.

[0076] Of course, it is not excluded that, along the insertion direction of the cable, the pressing spring piece 22 and the biting spring piece 23 are arranged in sequence and at intervals.

[0077] In some examples, the connection between the bite spring piece 23 and the first end of the open side of the elastic body 21 has a smooth transition, and the connection between the compression spring piece 22 and the second end of the open side of the elastic body 21 has a smooth transition, so as to ensure the structural stability of the first elastic member 2 and ensure that it can be smoothly restored to its original shape after deformation.

[0078] In order to obtain the bite spring piece 23 with excellent bite effect, Figure 3 The example shows that the bite spring piece 23 is arranged obliquely, the first end of the bite spring piece 23 is connected to the second end of the elastic body 21, the second end of the bite spring piece 23 is located in the cavity 210 of the elastic body 21, and the second end of the bite spring piece 23 is closer to the compression spring piece 22 relative to its first end.

[0079] The above-mentioned inclined direction of the bite spring piece 23 allows the cable to be inserted along the insertion direction and interferes with the movement of the cable along the removal direction. When the cable moves along the removal direction, the second end of the bite spring piece 23 abuts against the cable to achieve bite. Based on the smaller end area of ​​the bite spring piece 23, stable bite of the cable is achieved.

[0080] Furthermore, in order to obtain a pressed spring sheet 22 with excellent pressing effect, Figure 3 The example shows that the pressing spring piece 22 includes a first inclined section 221 and a pressing section 222 connected in sequence, one end of the first inclined section 221 away from the pressing section 222 is fixedly connected to the second end of the elastic body 21, the pressing section 222 is located in the cavity 210 of the elastic body 21, and the pressing section 222 is arranged adjacent to the bite spring piece 23.

[0081] By setting the structure of the pressing spring piece 22 as above, a pressing section 222 is provided to press the cable, and the pressing section 222 is easily designed to have a relatively large area to provide sufficient pressing force. The surface of the pressing section 222 facing the plug-in kit 3 can be a flat surface or an arc surface, both of which can achieve stable pressing of the cable.

[0082] Further, Figure 3 The example also shows that the pressing spring piece 22 further includes a second inclined section 223, a first end of the second inclined section 223 is fixedly connected to the pressing section 222, a second end of the second inclined section 223 extends in a direction away from the first inclined section 221, and a gap is provided between the second inclined section 223 and the engaging spring piece 23. By further providing the second inclined section 223, the pressing section 222 is extended, which is more beneficial to enhancing the structural stability of the pressing section 222, and ensuring that the pressing effect of the pressing section 222 on the cable is always stable.

[0083] As mentioned above, there is a gap between the second inclined section 223 and the bite spring piece 23, and the distance between the second inclined section 223 and the bite spring piece 23 meets the following conditions: when the first elastic member 2 is in a natural state or the wire diameter of the cable is smaller than the wire diameter threshold, the second inclined section 223 and the bite spring piece 23 are always out of contact, thereby preventing the second inclined section 223 from interfering with the bite spring piece 23.

[0084] Furthermore, the projection of the second end of the second inclined section 223 on the bite spring piece 23 is located between the first end and the second end of the bite spring piece 23, and the distance between the second inclined section 223 and the bite spring piece 23 also satisfies the following conditions: when the wire diameter of the cable of the second inclined section 223 is greater than or equal to the wire diameter threshold, the second end of the second inclined section 223 abuts against the bite spring piece 23.

[0085] When the wire diameter of the cable is too large, the bite spring piece 23 also undergoes a correspondingly large deformation, causing it to gradually approach the second inclined section 223. In order to prevent the bite spring piece 23 from being deformed too much and unable to be fully reset, the above-mentioned scheme is used to make the second end of the second inclined section 223 abut against the bite spring piece 23 to control the deformation of the bite spring piece 23, thereby solving the above-mentioned technical problem.

[0086] The above is an exemplary description of the structural arrangement of the first elastic member 2 , and the structure and arrangement of the plug-in member 3 will be further described below.

[0087] In the embodiment of the present invention, the plug kit 3 is made of metal, such as copper. Specifically, the plug kit 3 is in contact with the core of the cable 001 to achieve electrical conduction.

[0088] As mentioned above, the plug kit 3 is fixedly arranged inside the housing 1 and at least partially located in the cavity 210 of the elastic body 21, wherein the plug kit 3 can be fixedly connected to the inner wall of the housing 1, for example, at least one of the two ends of the plug kit 3 distributed along the cable plugging and unplugging direction is fixedly connected to the housing 1, and the plug kit 3 penetrates the elastic body 21 to extend into the cavity 210 of the elastic body 21. Alternatively, the side portion of the plug kit 3 extending along the cable plugging and unplugging direction is fixedly connected to the housing 1 through a bracket (for example, the bracket extends along the axial direction of the rotating shaft of the handle 4 and is fixedly connected to the housing 1), in which case, the plug kit 3 does not need to penetrate the elastic body 21, so that the plug kit 3 can be directly accommodated in the cavity 210 of the elastic body 21.

[0089] Considering the purpose of simplifying the terminal block structure layout, as shown in the attached Figure 7 and attached Figure 8 As shown, the side of the elastic body 21 facing the first wire inlet 120 also has a first avoidance opening 212, and the first avoidance opening 212 is connected to the second wire inlet 211, so that the first end of the plug-in kit 3 distributed along the cable plug-in and pull-out direction is fixedly connected to the shell 1, and the plug-in kit 3 passes through the first avoidance opening 212 and extends into the cavity 210 of the elastic body 21.

[0090] Attached Figure 8 The first end of the plug kit 3, that is, its lower end, is illustrated, and the lower end of the plug kit 3 is fixedly connected to the shell 1. Its implementation method, for example, can be that a plurality of first pressing blocks 121 are arranged at the bottom of the shell 1, and a first positioning groove 122 is formed between two adjacent first pressing blocks 121, and the lower end of the plug kit 3 is inserted into the first positioning groove 122, thereby realizing the fixed connection between the plug kit 3 and the shell 1.

[0091] For the above solution, when there is a stable fixing effect between the lower end of the plug sleeve 3 and the housing 1, the upper end of the plug sleeve 3 can be left empty, that is, the upper end of the plug sleeve 3 is accommodated in the cavity 210 of the first elastic member 2 without penetrating the top wall of the elastic body 21. Of course, it is not excluded that the upper end of the plug sleeve 3 can also be fixedly connected to the bracket fixedly connected to the housing 1 mentioned above.

[0092] The first pressing block 121 may be further used to abut against the bottom wall of the elastic body 21 , thereby supporting the elastic body 21 and achieving stable assembly of the elastic body 21 inside the housing 1 .

[0093] As for the first avoidance opening 212, the first avoidance opening 212 not only allows the plug-in kit 3 to pass therethrough, but also extends along the movement direction of the first elastic member 2, so as to allow the plug-in kit 3 to move relatively in the first avoidance opening 212 when the first elastic member 2 is driven by the handle 4 to move, thereby preventing the plug-in kit 3 from interfering with the movement of the first elastic member 2.

[0094] The structure of the first avoidance opening 212 is adaptively designed according to the structure of the plug kit 3. For example, the plug kit 3 is rod-shaped, and accordingly, the first avoidance opening 212 can be designed as a rectangular shape, and the second line inlet 211 connected to the first avoidance opening 212 can be designed as a semicircular arc shape.

[0095] In some examples, such as the attached Figure 7 and attached Figure 8 As shown, the side of the elastic body 21 away from the first cable inlet 120 also has a second avoidance opening 213, the second avoidance opening 213 is connected to the first avoidance opening 212, the plug-in kit 3 passes through the second avoidance opening 213, and the second end of the plug-in kit 3 distributed along the cable plug-in and pull-out direction is fixedly connected to the housing 1. Figure 7 The second end of the plug-in kit 3, that is, the upper end thereof, is illustrated. The function and structural design of the second avoidance opening 213 are the same as those of the first avoidance opening 212, and are not described in detail herein.

[0096] By providing the second avoidance opening 213 , the upper end of the plug kit 3 is allowed to pass therethrough to be fixedly connected with the top wall of the housing 1 , which is more beneficial for enhancing the fixed assembly effect of the plug kit 3 , thereby ensuring the fixing effect of the plug kit 3 on the cable.

[0097] In some examples, the second avoidance opening 213 may be prepared by a stamping process, and at the same time, a region on the elastic body 21 corresponding to the second avoidance opening 213 may also form a fixing block 24 .

[0098] As attached Figure 8As shown, the upper end of the plug-in kit 3 is fixedly connected to the shell 1. Its implementation method may be, for example, that a plurality of second pressing blocks 111 are arranged on the top of the shell 1, and a second positioning groove 112 is formed between two adjacent second pressing blocks 111, and the upper end of the plug-in kit 3 is inserted into the second positioning groove 112 to achieve fixed connection between the two ends of the plug-in kit 3 and the shell 1.

[0099] The second pressing block 111 can be further used to abut against the top wall of the elastic body 21 , so as to stably press the elastic body 21 and ensure that the elastic body 21 is stably and reliably placed inside the housing 1 .

[0100] In some examples, such as the attached Fig. 9 As shown, the surface of the plug set 3 facing the clamping structure, that is, facing the pressing spring piece 22 and the biting spring piece 23, has a wire groove 31, and the wire groove 31 is used to accommodate the cable 001. For example, when the cable 001 is cylindrical, the wire groove 31 is an arc-shaped groove to accommodate the cable 001. On the one hand, it can enhance the limiting effect on the cable 001, and on the other hand, it is also conducive to increasing the contact area between the plug set 3 and the cable 001, which is not only more beneficial for preventing the pressure loss of the cable 001, but also conducive to increasing the contact area between the cable 001 and the plug set 3, ensuring a stable electrical connection.

[0101] Due to the misalignment between the second inlet 211 and the first inlet 120, after the first elastic member 2 is reset, the cable 001 is bent at the inlet. For a thin single-core hard wire or a multi-core soft wire, the bending arrangement is relatively easy. However, for a multi-core hard wire or a thick single-core hard wire, the bending arrangement may be difficult. In order to enhance the adaptability of the terminal block to different types of cables 001, as shown in the attached Fig.10 As shown, the side of the plug sleeve 3 close to the first wire inlet 120 facing the wire clamping structure, that is, the surface facing the pressing spring piece 22 and the biting spring piece 23, can have an arc-shaped protrusion 32, and the arc-shaped protrusion 32 smoothly transitions with the surface of the plug sleeve 3. Based on the arc-shaped protrusion 32, the bending phenomenon of the cable 01 is alleviated, and the bending degree of the cable 001 is reduced, so that the terminal block can be compatible with single-core hard wires or multi-core soft wires with thinner wire diameters, and can also be further compatible with multi-core hard wires or single-core hard wires with thicker wire diameters.

[0102] For any of the above-mentioned terminals, Figure 8As shown, the housing 1 has a receiving cavity 101 and a limiting cavity 102 arranged in sequence and connected along the moving direction of the first elastic member 2, wherein the receiving cavity 101 is used to accommodate the first elastic member 2, and the height dimension of the limiting cavity 102 gradually decreases along the direction away from the receiving cavity 101, and the maximum height dimension of the limiting cavity 102 is less than or equal to the height dimension of the first elastic member 2, wherein the height dimension is the dimension along the cable plugging and unplugging direction. For example, the cross-sectional shape of the limiting cavity 102 is an isosceles trapezoid.

[0103] The accommodating cavity 101 and the limiting cavity 102 are arranged in sequence and spaced along the direction in which the first elastic member 2 moves driven by the handle 4. When the wiring terminal is not inserted with a cable, the first elastic member 2 is located in the accommodating cavity 101 and is in a natural state. When a cable is inserted into the wiring terminal, the handle 4 drives the first elastic member 2 to move, so that the first elastic member 2 moves from the accommodating cavity 101 to the inside of the limiting cavity 102. Since the maximum height dimension of the limiting cavity 102 is less than or equal to the height dimension of the first elastic member 2, the first elastic member 2 is squeezed by the inner wall of the limiting cavity 102 and elastically deforms to store elastic potential energy, so as to facilitate the elastic reset movement of the first elastic member 2.

[0104] The housing 1 can be designed in various forms. For example, along the plugging and unplugging direction of the cable, the housing 1 is configured as two separated parts, or along the moving direction of the first elastic member 2, the housing 1 is configured as two separated parts, for example, Figure 8 The housing 1 of the embodiment of the present invention is illustrated to include two parts arranged along the plugging and unplugging direction of the cable. This method is more convenient for assembling the first elastic member 2.

[0105] Continue to see Figure 8 , which illustrates that the shell 1 includes: a pressing plate 11 and a base 12, the pressing plate 11 is connected to the open end of the base 12; wherein the pressing plate 11 is provided with a second pressing block 111, the second pressing block 111 has an inclined second limiting surface 1110, the base 12 is provided with a first pressing block 121, the first pressing block 121 has an inclined first limiting surface 1210, and the gap between the second limiting surface 1110 and the first limiting surface 1210 forms a limiting cavity 102.

[0106] The second pressing block 111 has a second limiting surface 1110 arranged obliquely to abut against the second end of the open side of the first elastic member 2 and the pressing spring sheet 22. The first pressing block 121 has a first limiting surface 1210 arranged obliquely to abut against the first end of the open side of the first elastic member 2 and the bite spring sheet 23. The second limiting surface 1110 is symmetrically arranged with the first limiting surface 1210, and is used to squeeze the open side, the pressing spring sheet 22 and the bite spring sheet 23 of the first elastic member 2 when the first elastic member 2 moves, so as to ensure that the first elastic member 2 is deformed smoothly and stores elastic potential energy. The limiting cavity 102 not only plays a limiting role, but also has a certain guiding role for the movement of the first elastic member 2.

[0107] Along the distribution direction of the accommodating cavity 101 and the limiting cavity 102, the first pressing block 121 and the second pressing block 111 can be provided as a plurality of spaced apart arrangements, for example, Figure 6 The example shows that both of them are two, and it is shown that one of the first pressing blocks 121 is provided with a first limiting surface 1210, and one of the second pressing blocks 111 is provided with a second limiting surface 1110, so that the gap between the second limiting surface 1110 and the first limiting surface 1210 forms the limiting cavity 102, and the other positions of the current first pressing block 121 and the second pressing block 111 cooperate to form a partial area of ​​the accommodating cavity 101. It is not excluded that the first pressing block 121 and the second pressing block 111 that can also constitute the accommodating cavity 101 and the limiting cavity 102 are also independent and feasible.

[0108] It should be noted that the first wire inlet 120, the lower pressing plate 11, and the first positioning groove 122 are all arranged on the bottom wall of the base 12, the upper pressing plate 11 and the second positioning groove 112 are all arranged on the pressing plate 11, and the handle 4 is rotatably connected to the base 12. The fixed connection method between the base 12 and the pressing plate 11 includes but is not limited to: screw connection, snap connection, riveting, bonding, etc.

[0109] For any of the above-mentioned terminal blocks, it can be connected to one cable 001, or it can be connected to multiple cables 001 arranged side by side, such as two cables 001. The structure of the first elastic member 2, the plug-in kit 3 and the first cable inlet 120 on the shell 1 can be adaptively designed according to the number of connected cables 001.

[0110] The drawings involved in the embodiments of the present invention are all illustrated by taking the example of connecting two cables 001 to the terminal block at the same time. It can be seen that the first wire inlet 120, the second wire inlet 211, the pressing spring piece 22, the bite spring piece 23 and the wire groove 31 on the plug kit 3 are all arranged in two groups arranged side by side.

[0111] For the above-mentioned wiring terminals, combined with Figure 6-Figure 13 , the working process of the terminal block scheme is exemplified below.

[0112] See also Fig.11 When it is necessary to connect the cable 001 to the terminal block, the handle 4 is pressed to rotate it, thereby pushing the first elastic member 2 to translate to the right. During the translation of the first elastic member 2, the second elastic member 5 is subjected to force to store elastic potential energy until the second wire inlet 211 moves to be coaxially connected with the first wire inlet 120. At this time, the open side of the first elastic member 2 enters the limiting cavity 102 of the shell 1. Specifically, the upper and lower ends of the open side will be bent by the oblique pressure of the first limiting surface 1210 and the second limiting surface 1110, and the accumulated elastic potential energy of the first elastic member 2 reaches the maximum.

[0113] See also Fig.12 , insert the cable 001 into the coaxially connected first cable inlet 120 and the second cable inlet 211. During the insertion process, the cable 001 will successively touch the bite spring piece 23 and the press spring piece 22, which will exert a leftward pre-force on the cable 001.

[0114] See also Fig.13 When the cable 001 touches the top of the first elastic member 2, the handle 4 is released, the elastic potential energy stored in the first elastic member 2 and the second elastic member 5 is released, the first elastic member 2 moves to the left, and the cable 001 moves to the left at the same time. Figure 6 The cable 001 is bent by the tension of the first elastic member 2 and the second elastic member 5, and is tightly attached to the plug-in member 3, so that the two are electrically connected. The bite spring piece 23 and the press spring piece 22 continuously apply pressure to the cable 001 to realize the power supply of the product.

[0115] Since the cable 001 is connected between the first elastic member 2 and the plug-in kit 3, the volume of the cable causes the compression spring piece 22 and the bite spring piece 23 to deform and generate a greater pressure, the magnitude of which is proportional to the volume of the cable 001, so that the cable 001 and the plug-in kit 3 are in stable contact.

[0116] Continue to see Figure 6 When the cable 001 is fixed, it will be subjected to three pressures, namely the pressure of the pressing spring piece 22, the pressure of the biting spring piece 23 and the pressure of the second cable inlet 211. Since the elastic force of the second elastic member 5 works to fix the position of the first elastic member 2, when the cable 001 is pulled, for example, the cable 001 moves horizontally downward, the biting spring piece 23 will be embedded in the cable 001, making it impossible for the cable 001 to be pulled out.

[0117] It can be seen that the above scheme of the embodiment of the present invention ensures that the cable 001 is firmly and stably connected, and the cable 001 is fixed at multiple points at the same time, and the cable 001 will not be excessively damaged. When the cable 001 needs to be withdrawn, the handle 4 is pressed to push the first elastic member 2 to move to the right, and the cable 001 can be pulled out by only pushing the pressing spring sheet 22 and the biting spring sheet 23 away from the cable 001. The displacement of the handle 4 is small, and the force generated only acts on the side of the first elastic member 2 away from the pressing spring sheet 22 and the biting spring sheet 23. The force applied is small, which can reduce the pressing force of the withdrawal handle 4 and prevent damage to the spring sheets and the cable 001 when withdrawing the line.

[0118] On the other hand, an embodiment of the present invention further provides an electrical device, which includes a device housing and a wiring terminal disposed inside the device housing, and the wiring terminal is as described in any one of the above items.

[0119] The electrical device provided by the embodiment of the present invention has all the advantages of the above-mentioned connection terminals, which will not be described in detail here. By way of example, the electrical device includes but is not limited to: a socket, a switch, and the like.

[0120] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0121] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A terminal block, characterized in that: The wiring terminal comprises: a housing (1), a first elastic member (2), a plug sleeve (3) and a handle (4); The first elastic member (2) is movably arranged inside the housing (1), and comprises an elastic body (21) having a cavity (210) and a wire clamping structure arranged on one side of the elastic body (21); The plug-in kit (3) is fixedly arranged inside the housing (1) and at least partially located in the cavity (210) of the elastic body (21); the plug-in kit (3) is used to cooperate with the wire clamping structure to clamp the cable (001); and the handle (4) is used to drive the first elastic member (2) to move; The housing (1) has a first wire inlet (120), the elastic body (21) has a second wire inlet (211) on a side facing the first wire inlet (120), and when the first elastic member (2) is in a natural state, the central axis of the first wire inlet (120) and the central axis of the second wire inlet (211) are arranged in a staggered manner along the movement direction of the first elastic member (2).

2. The connection terminal according to claim 1, characterized in that: The handle (4) is rotatably connected to the housing (1), and the handle (4) abuts against a side of the elastic body (21) away from the wire clamping structure.

3. The connection terminal according to claim 1, characterized in that: A fixing block (24) is fixedly arranged in the cavity (210) of the elastic body (21), and the wiring terminal further comprises a second elastic member (5), the second elastic member (5) is connected between the plug-in kit (3) and the fixing block (24), and the extension direction of the second elastic member (5) is consistent with the driving direction of the handle (4).

4. The connecting terminal according to any one of claims 1 to 3, characterized in that: The wire clamping structure comprises a pressing spring sheet (22) and a biting spring sheet (23) arranged at intervals along the plugging and unplugging direction of the cable (001); The elastic body (21) has an open side, the bite spring sheet (23) is connected to a first end of the open side of the elastic body (21), and the press-fit spring sheet (22) is connected to a second end of the open side of the elastic body (21); Wherein, along the insertion direction of the cable (001), the first end and the second end of the elastic body (21) are arranged in sequence and spaced apart.

5. The connection terminal according to claim 4, characterized in that: The bite spring piece (23) is arranged at an angle, and the first end of the bite spring piece (23) is connected to the second end of the elastic body (21), the second end of the bite spring piece (23) is located in the cavity (210) of the elastic body (21), and the second end of the bite spring piece (23) is closer to the pressing spring piece (22) than the first end thereof.

6. The connection terminal according to claim 5, characterized in that: The pressing spring sheet (22) comprises a first inclined section (221) and a pressing section (222) which are connected in sequence, wherein one end of the first inclined section (221) away from the pressing section (222) is fixedly connected to the second end of the elastic body (21), the pressing section (222) is located in the cavity (210) of the elastic body (21), and the pressing section (222) is arranged adjacent to the bite spring sheet (23).

7. The connection terminal according to claim 6, characterized in that: The pressing spring piece (22) further comprises a second inclined section (223), a first end of the second inclined section (223) being fixedly connected to the pressing section (222), a second end of the second inclined section (223) extending in a direction away from the first inclined section (221), and a gap being provided between the second inclined section (223) and the bite spring piece (23).

8. The connection terminal according to claim 7, characterized in that: The distance between the second inclined section (223) and the engaging elastic piece (23) satisfies the following conditions: When the first elastic member (2) is in a natural state or the wire diameter of the cable (001) is smaller than a wire diameter threshold, the second inclined section (223) is not in contact with the engaging spring sheet (23); and, When the wire diameter of the cable (001) is greater than or equal to the wire diameter threshold, the second end of the second inclined section (223) abuts against the engaging spring piece (23).

9. The connecting terminal according to any one of claims 1 to 8, characterized in that: The side of the elastic body (21) facing the first wire inlet (120) also has a first avoidance opening (212), and the first avoidance opening (212) is connected to the second wire inlet (211); The first end of the plug-in kit (3) distributed along the cable plug-in and pull-out direction is fixedly connected to the housing (1), and the plug-in kit (3) passes through the first avoidance opening (212) and extends into the cavity (210) of the elastic body (21).

10. The connection terminal according to claim 9, characterized in that: The elastic body (21) further has a second avoidance opening (213) on a side facing away from the first cable inlet (120); the plug-in kit (3) passes through the second avoidance opening (213); and a second end of the plug-in kit (3) distributed along the cable plugging and unplugging direction is fixedly connected to the housing (1).

11. The connecting terminal according to any one of claims 1 to 10, characterized in that: The housing (1) has a containing cavity (101) and a limiting cavity (102) arranged in sequence and connected along the movement direction of the first elastic member (2); The accommodating cavity (101) is used to accommodate the first elastic member (2), and the height dimension of the limiting cavity (102) gradually decreases along the direction away from the accommodating cavity (101), and the maximum height dimension of the limiting cavity (102) is less than or equal to the height dimension of the first elastic member (2), wherein the height dimension is the dimension along the cable plugging and unplugging direction.

12. The connection terminal according to claim 11, characterized in that: The housing (1) comprises: a pressing plate (11) and a base (12), wherein the pressing plate (11) is connected to an open end of the base (12); The pressure plate (11) is provided with a second pressure block (111), the second pressure block (111) has a second limiting surface (1110) arranged obliquely, the base (12) is provided with a first pressure block (121), the first pressure block (121) has a first limiting surface (1210) arranged obliquely, and the gap between the second limiting surface (1110) and the first limiting surface (1210) forms the limiting cavity (102).

13. The connecting terminal according to any one of claims 1 to 12, characterized in that: The surface of the plug-in kit (3) facing the wire clamping structure is provided with a wire groove (31), and the wire groove (31) is used to accommodate the cable (001); And / or, a surface of the plug sleeve (3) on a side close to the first wire inlet (120) facing the wire clamping structure has an arc-shaped protrusion (32), and the arc-shaped protrusion (32) smoothly transitions to the surface of the plug sleeve (3).

14. An electrical device, characterized in that: The electrical device comprises a device housing and a connection terminal arranged inside the device housing, and the connection terminal is as described in any one of claims 1-13.

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