CN207459206U - An electrical connection terminal - Google Patents

Abstract

The utility model discloses an electric connecting terminal, which comprises a wire seat, a conical shaft and a spring, wherein the wire seat is provided with a wire inlet hole seat for placing and stopping the conical shaft, the wire inlet hole seat is provided with a wire hole for feeding or withdrawing the wire, the conical shaft comprises a wire dividing conical part for dividing the wire, a first pressing wire withdrawing part for feeding or withdrawing the wire and a pressure-bearing part abutted against the spring, the first pressing and withdrawing line part is positioned at the extension part of the wire separating cone part, the wire inlet hole seat is provided with a second pressing and withdrawing line part matched with the first pressing and withdrawing line part, the first pressing line-withdrawing part is provided with a first cylindrical surface which is parallel to the axial direction of the inner cavity and a first conical inclined surface which forms an included angle a with the cylindrical surface, the wire inlet hole seat is provided with a second cylindrical surface axially parallel to the inner cavity and a second conical inclined surface forming an included angle b with the second cylindrical surface, and a guide gap for wire inlet or wire outlet is formed between the first cylindrical surface and the second cylindrical surface. The connecting terminal with the structure can automatically withdraw the wire without a wire withdrawing device, and the connection is quick and convenient.

Description

An electrical connection terminal

technical field

The utility model relates to an electrical connection device, in particular to an electrical connection terminal.

Background technique

The electrical connection terminals in the prior art adopt the method of connecting the wire ends by cross-folding and winding the wire ends or wrapping them with sleeves and then compacting them. Various tools and accessories are required during installation or wiring, which requires many processes and consumes a lot of wires. It is labor-intensive and time-consuming, and the quality is affected by the operation skills. It is difficult to guarantee the safe life and reliability of the thread connection. In addition, in electrical circuit engineering, when the lines pass through different geographical environments, the wire joints will shrink and loosen due to the influence of climate cold and heat, and may also be affected by moisture erosion, especially for pipelines that pass through water or buried underground, the wire joints will be damaged. Oxidation, after oxidation, the contact surface will generate resistance, and heat will cause line failure or electrical accident when current passes.

At present, there are some plug-in and lock-wire connection terminals in the prior art, but they all use the shrapnel buckle clamping method. This shrapnel reverse buckle clamping method cannot guarantee electrical conduction and tensile strength, and the lock wire After the mechanism is subjected to strong extrusion, the resetting property becomes poor or fails, which poses hidden dangers to electrical transmission and is difficult to guarantee reliability. It is also very difficult to remove the wires of the terminal blocks in the prior art, usually needing to be cut off, requiring tools, and wasting electric wires.

Contents of the invention

In order to overcome the above problems, the utility model provides an electrical connection terminal with fast connection, convenient operation, safe use, low cost and wire-saving.

The technical scheme that the utility model solves its technical problem adopts is:

The electrical connection terminal includes a wire seat with an inner cavity, a tapered shaft, and a spring that is axially installed in the inner cavity of the wire seat and can push the tapered shaft to move in the inner cavity. The wire inlet hole seat of the tapered shaft, the wire inlet hole seat has a wire hole for entering or withdrawing the wire, and the tapered shaft includes a taper for dividing the wire, and a wire for entering or withdrawing the wire. The first press-back line part and the pressure-bearing part against the spring, the first press-back line part is located at the extension of the taper part of the branch line, and the inlet hole seat is provided with the first press-back line part. The matched second depressing line part, the first depressing line part has a first cylindrical surface parallel to the axial direction of the inner cavity and a first conical inclined surface forming an angle a with the cylindrical surface, correspondingly, The wire inlet seat has a second cylindrical surface parallel to the axial direction of the inner cavity and a second tapered inclined surface forming an angle b with the second cylindrical surface, and the distance between the first cylindrical surface and the second cylindrical surface A guide gap for incoming or outgoing wires is formed between them.

The included angle a is 100°-150°.

The included angle a is 135°.

The wire inlet seat is integrated with the wire seat.

The outer surface of the wire seat has an insulating and waterproof sheath.

The wire seat is a one-way, two-way or three-way structure.

The wire base has a mounting structure for fixing the electrical connection terminals.

The installation structure is a riveting piece, a screw or a wiring hole.

The beneficial effects of the utility model are:

Compared with the prior art, since the utility model has a thread seat with an inner cavity, a tapered shaft, and a spring axially installed in the inner cavity of the thread seat and can push the tapered shaft to move in the inner cavity, the thread seat is provided with There is an inlet hole seat for accommodating and stopping the tapered shaft, and the first depressing line part has a first cylindrical surface parallel to the axial direction of the inner cavity and a first cylindrical surface forming an included angle a with the cylindrical surface. Correspondingly, the inlet hole seat has a second cylindrical surface parallel to the axial direction of the inner cavity and a second conical inclined surface forming an angle b with the second cylindrical surface, and the first column A guide gap is formed between the surface and the second cylindrical surface for the incoming or outgoing wire. This structure can realize thread withdrawal without any unlocking mechanism. Due to the existence of the tapered slope, the operator holds the thread head tightly and pulls the thread head down while rotating. During the rotation process, the thread head to be divided is also rotated at the branch line, so the concentration point at the branch line will move up, resulting in The concentrating point of the wire end pushes the cone shaft to move up, so that a gap is formed between the first inclined plane and the second inclined plane, thereby releasing the function of the inclined plane to press the wire, and at the same time pulling the wire end outward, due to the existence of the inclined plane, the wire will follow the first cylindrical surface and the gap between the second cylindrical surface and the gap formed between the first inclined surface and the second inclined surface are withdrawn from the wire seat to realize unlocking. making withdrawal possible.

On this basis, the connection terminal also has a retracting mechanism. This structure can provide auxiliary thread withdrawal for softer threads.

On this basis, an external insulating and waterproof sheath is provided outside the electrical connection self-locking terminal, which can be insulated, self-sealing after connection, waterproof, moisture-proof and anti-oxidation, so that the electrical connection self-locking terminal is widely used in various occasions, especially suitable for harsh environment, such as cold and frozen soil, humid environment, acidic and alkaline environment and underwater environment, etc.

On this basis, an installation structure is provided on the electrical connection terminal, and the installation structure is designed according to different occasions to adapt to various electrical and electrical equipment environments.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of the utility model having a retracting mechanism;

Fig. 3 is a schematic cross-sectional view of another embodiment of the present invention;

Fig. 4 is a schematic cross-sectional view of another embodiment of the present invention

Fig. 5 is a schematic structural view of the utility model having an insulating waterproof sheath;

Fig. 6 is a structural schematic diagram of the installation structure of the utility model as a riveted part;

Fig. 7 is a schematic diagram of the structure of the installation structure of the utility model as a screw;

Fig. 8 is a structural schematic diagram of the installation structure of the utility model as a wiring hole.

Detailed ways

Referring to Fig. 1, a kind of embodiment of the present utility model is shown, the electric connection terminal that is used for electric wire and electrical equipment connection, comprises the wire seat 1 that has inner cavity 11, the taper shaft 2 in inner cavity 11, axially installed on The inner chamber 11 of the wire seat can push the spring 3 that the tapered shaft 2 moves in the inner chamber 11. The wire seat 1 is provided with a wire inlet hole seat 12 for placing and stopping the tapered shaft 2, and the wire inlet hole In the seat 12, there is a groove 121 for placing the tapered shaft 2 and a wire hole 123 communicating with the groove 121 for entering or withdrawing the wire. The groove 121 and the wire hole 123 are also part of the inner cavity. There is a baffle plate 13 at the rear of the inner chamber 11 to prevent the spring from getting out of the inner chamber, and the taper shaft 2 includes a taper part 21 for dividing the line, and a first press-back line part 22 for entering or withdrawing the line and the pressure-receiving part 23 against the spring, the first press-back line part 22 is located at the extension of the branch line taper part 21, and the inlet hole seat 12 is provided with a The second depressing line part 122, the first depressing line part 22 on the taper shaft has a first cylindrical surface 221 parallel to the axial direction of the inner cavity and a first cylindrical surface 221 forming an included angle a with the first cylindrical surface 221. A conical inclined surface 222, correspondingly, the wire inlet seat 12 has a second cylindrical surface 1221 parallel to the axial direction of the inner cavity and a second conical inclined surface 1222 forming an included angle b with the second cylindrical surface 1221 , that is, the second cylindrical surface 1221 and the second tapered inclined surface 1222 form a groove 121 for placing a tapered shaft. The first press-back line part cooperates with the second press-back line part to realize line entry or line withdrawal. Since the first cylindrical surface 221 is parallel to the second cylindrical surface 1221 , and the first tapered inclined surface 222 is parallel to the second tapered inclined surface 1222 , the included angle a and included angle b are equal. The wire inlet seat 12 can be integrated with the wire seat, or can be processed into separate parts. In the case of no connection, under the action of the spring, the first tapered slope fits against the second tapered slope.

When wiring, insert the wire end into the wire hole 123 in the wire hole seat 12, and push it inward. The end of the thread pushes the tapered shaft 2, and the spring is pressed to the rear of the thread seat, and a gap appears between the first conical inclined surface and the second conical inclined surface, and the end of the thread continues to extend inward along the gap, and enters the first cylindrical surface and the second cylindrical surface. Gap between cylinders. When the thread enters the bobbin long enough, when it stops pushing forward, the spring resets and presses the taper shaft to the outside, the gap between the first tapered slope and the second tapered slope becomes smaller, and finally the thread end is stuck in the first Self-locking is realized between the tapered slope and the second tapered slope. The connecting terminal of this structure is fast and convenient to connect, no auxiliary tools are needed, no need to wind the wire end, no need to wrap it with tape, save time and effort, save energy and energy, not be affected by the operation skills, the connection quality is guaranteed, and greatly improve the indoor and outdoor electrical engineering. , The installation efficiency of electrical installation wiring and the quality of line transmission. And when the wire is pulled outward, the gap between the first tapered slope and the second tapered slope will be smaller, and the force to clamp the wire end will be greater, so the wire end cannot escape, which is safe and reliable. The connection methods of the prior art, such as screw and thread winding connection, are affected by the cold and hot environment, and the thread ends will loosen and oxidize, resulting in poor contact. However, the utility model transmits the thread pressing force through the spring, and the pressure is always automatically followed, so that The wiring will not loosen and cause poor contact. More importantly, the utility model can withdraw the thread without the thread withdrawing mechanism. When withdrawing the thread, the operator holds the end of the thread tightly and pulls the end of the thread downward while rotating. During the rotation process, the end of the thread to be divided is also rotated at the branching point, so the concentration point at the branching point will move up, resulting in the concentration point of the thread ends Push the taper shaft to move up, so that a gap is formed between the first inclined surface and the second inclined surface, thereby releasing the function of the inclined surface to press the wire, and at the same time pulling the wire end outward, due to the existence of the inclined surface, the wire will go along the first cylindrical surface and the second cylindrical surface. The gap between the cylinders and the gap formed between the first tapered inclined surface and the second tapered inclined surface are withdrawn from the wire seat to realize thread withdrawal.

In order to make the thread thread unwind more smoothly, the angle a and b may preferably be 100°-150°. The best solution is 135°.

For the softer thread, in order to withdraw the thread more quickly, the thread withdrawal mechanism can be added as an auxiliary thread withdrawal. See Fig. 2, the unlocking mechanism 5 includes an unlocking lever 51 connected to the taper shaft 2, and the connection mode between the unlocking lever 51 and the taper shaft 2 can be screwed, or can be connected by conventional technical means in the technical field . The unlocking lever 51 can be a push type or a pull type. During operation, push the unlocking lever 51, and the unlocking lever 51 moves axially, thereby driving the tapered shaft 2 to move axially, and loses the clamping force on the thread end, and the thread end is pulled out from the thread inlet hole seat 1 to realize thread withdrawal .

In order to increase the practical function of wiring, the wire holder can also be produced as a two-way or three-way structure. Referring to Fig. 3, the wire seat is a two-way structure. Compared with the one-way structure shown in Fig. 1 and Fig. 2, this structure has two inner cavities and two wire inlet sockets, and the tails of the inner cavities are connected. The positions of other components in the inner cavity and the wire inlet seat are the same through structure. Referring to Fig. 4, the wire holder is a three-way structure. Compared with the one-way structure, this structure has three inner cavities and three wire inlet sockets, and the tails of the inner cavities are connected. The positions of other components in the inner cavity and the wire inlet seat are the same through structure.

In order to seal the connection and achieve insulation and waterproof effects, an insulating and waterproof sheath is added to the outer surface of the wire holder. FIG. 5 shows an electrical connection terminal with a three-way structure, and the outer surface of the wire base has an insulating and waterproof sheath 6 .

In order to securely and quickly install the electrical connection terminals on the circuit board or other devices, the wire holder has an installation structure for fixing the electrical connection terminals. As shown in Figure 6, the installation structure is a riveting part 7. When installing the electrical connection terminal, there is a hole matching the riveting part 7 on the circuit board (not shown), and the electrical connection terminal is inserted into the hole and riveted to fix it. Electrical connection terminals.

7, the installation structure is a screw 8. When installing the electrical connection terminal, there are holes matching the screw 8 on the circuit board. The electrical connection terminal is inserted into the hole, and a nut 100 can be used to fix the electrical connection terminal.

Figure 8 shows that the installation structure is a wiring hole 9, which is suitable for the connection of wire ends. The utility model can be made into products of different sizes and specifications, meets the connection of wires with different cross-sections, has strong versatility, breaks through the limitations of conventional male-female corresponding connection, and is widely used in various environmental electrical engineering and electrical and electrical products with leads. It can also be installed in electrical and electrical appliances as a power supply window and plug-in connection with the power supply. It occupies a small volume and low cost. During the installation, use and maintenance of the product, it saves time and labor, is fast, convenient and reliable.

Claims (7)

1. a kind of electrical terminal, including the line seat with inner cavity, the axis of cone, be axially mounted to line seat inner cavity can simultaneously promote it is described The spring that the axis of cone moves in the lumen, the line seat be equipped with for place and the axis of cone described in backstop inlet wire hole seat, it is described into There is on string holes seat for inlet wire or move back the string holes of line, it is characterised in that：The axis of cone includes the separated time tapering for separated time, uses In inlet wire or move back line the first pressure move back line portion and with spring against pressure-bearing portion, first pressure, which moves back line portion and is located at separated time tapering, prolongs Stretch place, the inlet wire hole seat, which is equipped with, moves back matched second pressure in line portion with the described first pressure and move back line portion, and first pressure moves back line portion With with axial the first tapered slope of parallel the first cylinder and a that has angle with the cylinder shape in inner cavity, it is correspondingly, described Entrance hole seat tool have with inner cavity axially parallel the second cylinder and with the second cylinder shape have angle b the second taper it is oblique Face, forms for inlet wire or moves back the guiding clearance of line between first cylinder and the second cylinder, the angle a is 100o- 150o。

2. electrical terminal according to claim 1, it is characterised in that：It is characterized in that：The angle a is 135o.

3. electrical terminal according to claim 1, it is characterised in that：The appearance of the line seat is protected with insulative water-proof Set.

4. electrical terminal according to claim 1, it is characterised in that：The inlet wire hole seat is one with the line seat Body.

5. electrical terminal according to claim 1, it is characterised in that：The line seat is a logical, two-way or threeway knot Structure.

6. according to the electrical terminal described in one of claim 1-5, it is characterised in that：The line seat tool has will be described electrical The fixed mounting structure of connection terminal.

7. electrical terminal according to claim 6, it is characterised in that：The mounting structure for riveting parts, screw or Wiring hole.