Terminal Blocks

Abstract

The present invention discloses a wiring terminal. The wiring terminal includes a terminal body and a wire pressing piece, wherein the first end of the wire pressing piece is fixedly connected to the terminal body, the second end of the wire pressing piece passes through the terminal body, the wire pressing piece and the terminal body enclose a storage space for placing a cable, and the second end of the wire pressing piece is configured to move in a direction away from the terminal body under the action of an external force so as to reduce the storage space. When using the wiring terminal of the present invention, the wire core of the cable with the insulation removed is placed in the storage space formed by the wire pressing piece and the terminal body, and then the second end of the wire pressing piece is moved in a direction away from the terminal body. During this process, the storage space formed by the wire pressing piece and the terminal body gradually becomes smaller, thereby achieving a tight crimping of the cable. The wiring terminal of the present invention can achieve wire crimping without the use of a special wire crimping tool.

Description

Technical Field

[0001] The invention relates to the field of cable connection devices, in particular to a wiring terminal. Background Art

[0002] With the rapid development of the power industry, the demand is increasing, and different devices need to be connected to each other, and power cables provide a major bridge for the power supply of different devices. However, in the related technologies known to the inventor, after the cable is laid, the terminals that overlap with the equipment do not match, resulting in the problem of replacing the terminals or re-laying the cables. In addition, because the power line cables are thicker and larger, conventional terminal crimping requires special tools and consumes a lot of effort to re-crimp the wires, which affects the construction efficiency. Summary of the invention

[0003] The object of the present invention is to provide a wiring terminal to facilitate wire crimping.

[0004] The present invention provides a wiring terminal, comprising:

[0005] a terminal body; and

[0006] A wire pressing piece, the first end of which is fixedly connected to the terminal body, the second end of which passes through the terminal body, the wire pressing piece and the terminal body together form a accommodating space for placing the cable, and the second end of the wire pressing piece is configured to move away from the terminal body under the action of an external force so that the accommodating space becomes smaller.

[0007] In some embodiments, the pressing piece is arc-shaped.

[0008] In some embodiments, the terminal further includes an annular shell, which is disposed on the outside of the terminal body and connected to the second end of the wire pressing piece. The annular shell rotates unidirectionally relative to the terminal body to drive the second end of the wire pressing piece to move away from the terminal body.

[0009] In some embodiments, a connecting strip is disposed on the inner surface of the annular housing, and the second end of the wire pressing piece passes through the terminal body and is connected to the connecting strip.

[0010] In some embodiments, the annular shell includes at least one handle located at an axial end, the handle is used to apply external force to rotate the annular shell; and / or, the annular shell has at least one through hole, the through hole is used to insert a tool and apply external force to the tool to rotate the annular shell.

[0011] In some embodiments, a plurality of first slots are evenly arranged on the inner surface of the annular shell in the circumferential direction, and first teeth are respectively provided on both sides of the terminal body. The first slots cooperate with the first teeth to enable the annular shell to rotate unidirectionally relative to the terminal body.

[0012] In some embodiments, the first latching groove and the first latching tooth are both inclined toward the rotation direction of the annular housing.

[0013] In some embodiments, a plurality of second slots are evenly arranged on the outer surface of the wire pressing piece, a channel for the second end of the wire pressing piece to pass through is provided in the terminal body, a second tooth is provided in the channel, and the second tooth cooperates with the second slot to enable the second end of the wire pressing piece to move unidirectionally relative to the terminal body.

[0014] In some embodiments, the number of the first card slots is greater than the number of the second card slots.

[0015] In some embodiments, a plurality of second slots are evenly arranged on the outer surface of the wire pressing piece, a channel is arranged in the terminal body for the second end of the wire pressing piece to pass through, a second tooth is arranged in the channel, and the second tooth is used to cooperate with the second slot to enable the second end of the wire pressing piece to move unidirectionally relative to the terminal body.

[0016] In some embodiments, the second locking groove is inclined toward the second end of the wire pressing piece, and the second locking tooth is inclined downward.

[0017] In some embodiments, a first anti-slip groove is disposed on the upper surface of the terminal body; and / or a second anti-slip groove is disposed on the lower surface of the wire pressing piece.

[0018] In some embodiments, the terminal body further has a connection hole for connecting with an electrical device.

[0019] Based on the technical solution provided by the present invention, the terminal includes a terminal body and a wire pressing piece, the first end of the wire pressing piece is fixedly connected to the terminal body, the second end of the wire pressing piece passes through the terminal body, the wire pressing piece and the terminal body are enclosed to form a storage space for placing the cable, and the second end of the wire pressing piece is configured to move in a direction away from the terminal body under the action of an external force so that the storage space becomes smaller. When using the terminal of the present invention, the wire core of the cable with the insulation removed is placed in the storage space formed by the wire pressing piece and the terminal body, and then the second end of the wire pressing piece is moved in a direction away from the terminal body. In this process, the storage space formed by the wire pressing piece and the terminal body gradually becomes smaller, thereby achieving a tight crimping of the cable. The terminal of the present invention can achieve wire crimping without the use of a special wire crimping tool.

[0020] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a connection terminal according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The wiring terminal shown is a schematic diagram of the structure at an angle;

[0024] Figure 3 for Figure 1 The schematic diagram of the structure of the wiring terminal shown is at another angle;

[0025] Figure 4 for Figure 1 The schematic diagram of the structure of the wiring terminal when the cable is connected;

[0026] Figure 5 for Figure 1 The diagram shown is a schematic diagram of the internal structure of the terminal block when crimping the cable. DETAILED DESCRIPTION

[0027] 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 only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0028] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0030] Figures 1 to 3 The structure of a connection terminal according to a specific embodiment of the present invention is shown. Figure 4 and Figure 5 FIG. 2 is a schematic diagram showing the use of the wiring terminal of this embodiment to crimp a cable. Figure 4 As shown, the cable 4 includes an insulating sheath 401 and a conductor core 402 wrapped in the insulating sheath 401. When the cable 4 needs to be crimped, the insulating sheath 401 at the end is removed to expose the inner conductor core 402 and place the conductor core 402 on the terminal.

[0031] like Figure 1 As shown, the connection terminal of the embodiment of the present invention comprises:

[0032] a terminal body 1; and

[0033] The wire pressing piece 3 has a first end fixedly connected to the terminal body 1, and a second end of the wire pressing piece 3 passes through the terminal body 1. The wire pressing piece 3 and the terminal body 1 enclose a storage space for placing the cable, and the second end of the wire pressing piece 3 is configured to move in a direction away from the terminal body 1 under the action of an external force so that the storage space becomes smaller.

[0034] When using the wiring terminal of this embodiment, the wire core 402 of the cable 4 with the insulation 401 removed is placed into the accommodation space formed by the crimping piece 3 and the terminal body 1, and then the second end of the crimping piece 3 is moved away from the terminal body 1. During this process, the accommodation space formed by the crimping piece 3 and the terminal body 1 gradually becomes smaller, thereby achieving a tight crimping of the cable. The wiring terminal of the embodiment of the present invention can achieve crimping without using a special crimping tool.

[0035] In some embodiments, Figure 1As shown, when the wire pressing piece 3 is in the initial state (not pressed), the wire pressing piece 3 is arc-shaped. Since the wire core 402 is generally circular, during the movement of the second end of the wire pressing piece 3, the arc-shaped wire pressing piece 3 can better maintain contact and crimping with the wire core 402, thereby ensuring the crimping effect on the cable.

[0036] like Figure 4 and Figure 5 As shown, compared with the wire pressing piece 3 in the initial state, the wire pressing piece 3 is deformed during the movement so that the accommodation space enclosed by the wire pressing piece 3 and the terminal body 1 becomes smaller, thereby playing the role of pressing the cable.

[0037] The terminal block of this embodiment further includes a driving structure for driving the second end of the wire pressing piece 3 to move. The driving structure may be a linear moving structure connected to the wire pressing piece 3, or a rotating structure connected to the wire pressing piece 3, as long as it is a structure that drives the second end of the wire pressing piece 3 to move in a direction away from the terminal body 1.

[0038] Specifically in this embodiment, Figure 1 and Figure 2 As shown, the terminal further includes an annular housing 2. The annular housing 2 is disposed outside the terminal body 1 and connected to the second end of the wire pressing piece 3. The annular housing 2 rotates unidirectionally relative to the terminal body 1 to drive the second end of the wire pressing piece 3 to move. Specifically, the annular housing 2 is controlled to rotate counterclockwise to drive the second end of the wire pressing piece 3 to move in a direction away from the terminal body 1 so that the shape and size of the accommodating space enclosed by the wire pressing piece 3 and the terminal body 1 are changed.

[0039] The annular housing 2 of this embodiment is completely closed in the circumferential direction. In other embodiments, the annular housing may also have a gap, as long as it can rotate in one direction and drive the second end of the wire pressing piece 3 to move.

[0040] In order to facilitate the operation and control of the rotation of the annular housing 2, as Figure 3 As shown, a handle 204 is provided at the axial end of the annular housing 2. The handle 204 is used to apply external force to rotate the annular housing 2. Preferably, handles 204 are provided on both sides of the annular housing 2 of this embodiment to facilitate the rotation of the annular housing 2 at different positions.

[0041] When the axial outer operating space of the annular housing 2 is insufficient or inconvenient to operate, a tool can be inserted into the through hole 202 provided on the annular housing 2 to rotate the annular housing 2. Figure 3 As shown, in this embodiment, at least one through hole 202 is provided on the circumference of the annular shell 2 to facilitate the rotation of the annular shell 2 at different positions.

[0042] In some embodiments, Figure 2As shown, the inner surface of the annular shell 2 is evenly arranged with a plurality of first clamping grooves 201 in the circumferential direction. The first clamping teeth 104 are arranged on both sides of the terminal body 1. The first clamping grooves 201 cooperate with the first clamping teeth 104 to enable the annular shell 2 to rotate unidirectionally relative to the terminal body 1. The terminal body 1 is fixedly arranged, and during the rotation of the annular shell 2, the plurality of first clamping grooves 201 of the annular shell 2 cooperate with the first clamping teeth 104 arranged on both sides of the terminal body 1. During the rotation of the annular shell 2, the two first clamping teeth 104 support the annular shell 2 to ensure its rotation stability. The terminal realizes the support of the annular shell 2 by using its own terminal body, without setting up redundant supporting structures, thereby simplifying the structure of the terminal.

[0043] Moreover, the first slot 201 and the first latching tooth 104 of this embodiment are both inclined toward the rotation direction of the annular housing 2. Specifically, in this embodiment, the annular housing 2 rotates counterclockwise, and the first slot 201 is inclined in the counterclockwise direction. Figure 2 As shown, the first latching tooth 104 on the left side of the terminal body 1 is inclined downward. The first latching tooth 104 on the right side of the terminal body 1 is inclined upward. Such an arrangement can prevent the annular housing 2 from rotating in the opposite direction and affecting the crimping effect on the cable.

[0044] In other embodiments, the annular housing may also rotate clockwise. Figure 2 For example, the left end of the wire pressing piece 3 can be fixed, and the right end can pass through the terminal body 1 and can move away from the terminal body 1 relative to the terminal body 1. At this time, the annular housing 2 can rotate clockwise and drive the right end of the wire pressing piece 3 to move. In this embodiment, in order to prevent the annular housing 2 from rotating in the opposite direction, the first clamping groove and the first clamping tooth are both inclined in the clockwise direction.

[0045] In order to limit the movement of the wire pressing piece 3 to prevent it from retracting in the reverse direction, the outer surface of the wire pressing piece 3 of this embodiment is evenly provided with a plurality of second slots 301, and a channel for the second end of the wire pressing piece 3 to pass through is provided in the terminal body 1, and a second latching tooth (not shown in the figure) matched with the second slot 301 is provided in the channel. The second latching tooth provided inside the terminal body 1 forms a concave-convex position with the second slot 301 so that the second end of the wire pressing piece 3 can move unidirectionally relative to the terminal body 1.

[0046] Specifically, the second slot 301 of this embodiment is inclined toward the second end of the wire pressing piece 3, and the second locking tooth is inclined downward. The second slot 301 and the second locking tooth cooperate to prevent the wire pressing piece 3 from moving in the opposite direction, thereby achieving the locking and tightening of the cable.

[0047] In order to reduce the force applied to the rotation of the annular housing 2, the number of the first slots 201 in this embodiment is greater than the number of the second slots 301. Moreover, the number of the first slots 201 is proportional to the number of the second slots 301.

[0048] According to the following Figures 1 to 5 The structure of the connection terminal according to a specific embodiment of the present invention is described.

[0049] like Figure 1 As shown, the wiring terminal of this embodiment includes a terminal body 1, an annular shell 2 and a wire pressing piece 3.

[0050] The terminal body 1 is used to place cables and connect to electrical devices. Specifically, in this embodiment, the first end of the terminal body 1 is a cable lap end, and the second end is an electrical device connection end. The upper surface of the cable lap end is provided with a first anti-slip groove 102. The electrical device connection end is provided with a connection hole 101 for connecting to an electrical device, and the connection hole 101 can be directly fixed to the electrical device by bolts.

[0051] Specifically in this embodiment, the terminal body 1 is a terminal board. The cable abutment end of the terminal board is square, and the width of the terminal board gradually increases from the cable abutment end to the electrical appliance connection end, and the electrical appliance connection end is arc-shaped.

[0052] like Figure 2 As shown, both sides of the terminal body 1 ( Figure 2 The first latching teeth 104 are provided on both sides of the terminal body 1 (left and right sides). The two first latching teeth 104 are respectively protruded on the two sides of the terminal body 1. The first latching teeth 104 on the left side are inclined downward relative to the horizontal plane, and the first latching teeth 104 on the right side are inclined upward relative to the horizontal plane. In the height direction, the two first latching teeth 104 are staggered up and down. The cross-sectional shape of the first latching teeth 104 of this embodiment includes a trapezoidal segment at the root and a square segment connected to the trapezoidal segment.

[0053] like Figure 1 As shown, the annular shell 2 is sleeved on the outer side of the cable lap end of the terminal body 1. And the inner surface of the annular shell 2 is evenly arranged with a plurality of first card grooves 201 in the circumferential direction. And the inner surface of the annular shell 2 is also provided with a connecting strip 203, and the second end of the wire pressing piece 3 passes through the terminal body 1 and is connected to the connecting strip 203. When the annular shell 2 rotates counterclockwise under the action of an external force, the second end of the wire pressing piece 3 moves downward driven by the connecting strip 203. And in the process of the rotation of the annular shell 2, the first card groove 201 on its inner side remains engaged with the first card teeth 104 on both sides of the terminal body 1 so that the annular shell 2 is supported by the terminal body 1 during the rotation process, so the rotation of the annular shell 2 is stable.

[0054] Specifically, the first clamping groove 201 is a square groove extending from one axial end to the other end of the annular housing 2. The top end of the first clamping tooth 104 is clamped in the square groove to cooperate with the first clamping groove 201.

[0055] like Figure 2 As shown, the first slot 201 of this embodiment is inclined toward the rotation direction of the annular housing 2. The first latching teeth 104 on the left side are inclined downward, and the first latching teeth 104 on the right side are inclined downward, so that the annular housing 2 can be prevented from reversing during rotation.

[0056] like Figure 2 and Figure 3 As shown, the annular housing 2 of this embodiment includes a handle 204 located at the axial end, and the handle 204 is used to apply external force to rotate the annular housing 2. Specifically, the annular housing 2 of this embodiment is provided with two handles 204 located at different positions. One handle 204 ( Figure 2 ) is arranged at the end of the connecting strip 203. Another handle 204 is arranged at the end of the annular housing 2 itself. The two handles are respectively located on the left and right sides to be suitable for different operating spaces.

[0057] In order to further make the terminal block of this embodiment suitable for different applications, the annular housing 2 of this embodiment has at least one through hole 202, and the through hole 202 is used to insert a tool and apply an external force to the tool to rotate the annular housing 2. For example, a straight tool such as a screwdriver can be inserted into the through hole 202 to rotate the annular housing 2.

[0058] like Figure 2 As shown, when the wire is not pressed, the wire pressing piece 3 of this embodiment is arc-shaped. The wire pressing piece 3 is located above the terminal body 1. The first end of the wire pressing piece 3 is fixedly connected to the terminal body 1, and the second end of the wire pressing piece 3 passes through the terminal body 1 and is connected to the connecting strip 203 on the annular housing 2. Then, when the annular housing 2 rotates, the second end of the wire pressing piece 3 can be driven to move through the connecting strip 203.

[0059] like Figure 2 As shown, the outer surface of the wire pressing piece 3 is provided with a plurality of second slots 301. The second slots 301 are square slots. A channel for the second end of the wire pressing piece 3 to pass through is provided in the terminal body 1, and a second latching tooth (not shown in the figure) matching with the second slot 301 is provided in the channel. The second latching tooth provided inside the terminal body 1 forms a concave-convex latching tooth position with the second slot 301.

[0060] Specifically in this embodiment, two second latching teeth are arranged in the channel, and the cross-sectional shape of the second latching teeth is a quadrilateral.

[0061] Preferably, the second slot 301 of the present embodiment is inclined toward the second end of the wire pressing piece 3, and the second latching teeth are inclined downward. Such an arrangement enables that when the second end of the wire pressing piece 3 moves downward, the plurality of second slots 301 are sequentially engaged with the outer sides of the second latching teeth, and since the second latching teeth are inclined downward, the wire pressing piece 3 can be prevented from moving in the reverse direction.

[0062] like Figure 3 As shown, the lower surface of the wire pressing piece 3 is provided with a second anti-skid groove 302. And the upper surface of the terminal body 1 is provided with a first anti-skid groove 102. When the wire pressing piece 3 and the terminal body 1 are enclosed and pressed, the upper and lower positions of the cable have anti-skid grooves, thereby forming a double anti-skid effect on the cable.

[0063] like Figure 4 As shown, the wire core 402 with the insulation skin 401 removed is placed into the wire pressing piece 3, and an external force is applied to the handle 204 of the annular shell 2 to rotate the annular shell 2 counterclockwise. At this time, the first latch 104 on the terminal body 1 and the first slot 201 on the annular shell 2 form a gear-like swivel. The rotation of the annular shell 2 drives the second end of the wire pressing piece 3 to move and deform the wire pressing piece 3. At this time, the second latch inside the terminal body 1 and the second slot 301 on the wire pressing piece 3 form a concave-convex rotating tooth engagement, so that the wire pressing piece 3 continuously shrinks and deforms, and the cable is locked and tightened. The second latch plays a reverse role in inhibiting the movement of the wire pressing piece 3 and preventing it from loosening, making the cable crimping tighter.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A terminal block, characterized in that: include: a terminal body (1); and A wire pressing piece (3), wherein a first end of the wire pressing piece (3) is fixedly connected to the terminal body (1), a second end of the wire pressing piece (3) passes through the terminal body (1), the wire pressing piece (3) and the terminal body (1) enclose a receiving space for placing a cable, and the second end of the wire pressing piece (3) is configured to move in a direction away from the terminal body (1) under the action of an external force so as to reduce the receiving space; The wiring terminal further comprises an annular housing (2), wherein the annular housing (2) is arranged on the outside of the terminal body (1) and connected to the second end of the wire pressing piece (3), and the annular housing (2) rotates unidirectionally relative to the terminal body (1) to drive the second end of the wire pressing piece (3) to move in a direction away from the terminal body (1).

2. The connection terminal according to claim 1, characterized in that: The wire pressing piece (3) is arc-shaped.

3. The connection terminal according to claim 1, characterized in that: The inner surface of the annular housing (2) is provided with a connecting strip (203), and the second end of the wire pressing piece (3) passes through the terminal body (1) and is connected to the connecting strip (203).

4. The connection terminal according to claim 1, characterized in that: The annular shell (2) comprises at least one handle (204) located at an axial end, the handle (204) being used to apply an external force to rotate the annular shell (2); and / or the annular shell (2) has at least one through hole (202), the through hole (202) being used to insert a tool and apply an external force to the tool to rotate the annular shell (2).

5. The connection terminal according to claim 1, characterized in that: The inner surface of the annular shell (2) is uniformly arranged with a plurality of first clamping grooves (201) in the circumferential direction, and first clamping teeth (104) are respectively provided on both sides of the terminal body (1), and the first clamping grooves (201) cooperate with the first clamping teeth (104) to enable the annular shell (2) to rotate unidirectionally relative to the terminal body (1).

6. The connection terminal according to claim 5, characterized in that: The first latching groove (201) and the first latching tooth (104) are both inclined towards one side of the rotation direction of the annular housing (2).

7. The connection terminal according to claim 5, characterized in that: The outer surface of the wire pressing piece (3) is evenly arranged with a plurality of second slots (301); a channel for allowing the second end of the wire pressing piece (3) to pass through is provided in the terminal body (1); a second latching tooth is provided in the channel; the second latching tooth cooperates with the second slot (301) to enable the second end of the wire pressing piece (3) to move unidirectionally relative to the terminal body (1).

8. The connection terminal according to claim 7, characterized in that: The number of the first card slots (201) is greater than the number of the second card slots (301).

9. The connection terminal according to claim 1, characterized in that: The outer surface of the wire pressing piece (3) is evenly provided with a plurality of second slots (301); the terminal body (1) is provided with a channel for allowing the second end of the wire pressing piece (3) to pass through; the channel is provided with a second latching tooth; the second latching tooth is used to cooperate with the second slots (301) so that the second end of the wire pressing piece (3) can move unidirectionally relative to the terminal body (1).

10. The connection terminal according to claim 9, characterized in that: The second locking groove (301) is inclined toward the second end of the wire pressing piece (3), and the second locking tooth is inclined downward.

11. The connection terminal according to claim 1, characterized in that: The upper surface of the terminal body (1) is provided with a first anti-slip groove (102); and / or the lower surface of the wire pressing piece (3) is provided with a second anti-slip groove (302).

12. The connection terminal according to claim 1, characterized in that: The terminal body (1) also has a connection hole (101) for connecting to an electrical device.

Images