Copper-aluminum transition wiring terminal

Abstract

The utility model discloses a copper-aluminum transition wiring terminal which comprises a copper-aluminum wiring sleeve, and a press-fitting assembly is installed at the upper end of the copper-aluminum wiring sleeve. The beneficial effects of the utility model are that when a copper wire and an aluminum wire are respectively inserted into the copper-aluminum wiring sleeve, the pressing column can extend into the copper-aluminum wiring sleeve under the reset action of the spring, so that after the pressing column and the copper wire as well as the aluminum wire are reliably pressed, the limiting toothed plate is limited by means of the limiting shifting plate; due to the fact that in the fixing mode, the copper wire and the aluminum wire are pressed and fixed by shifting the limiting shifting plate and then pulling and resetting the pressing column at one time, the tedious operation of screwing a screw is omitted, and the copper wire and the aluminum wire can be rapidly pressed and fixed. Therefore, the butt joint installation efficiency of the copper wire and the aluminum wire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal blocks, and particularly relates to a copper-aluminum transition terminal block. Background Art

[0002] A copper-aluminum transition terminal block is a device for electrical connection, specifically designed to reliably connect copper conductors and aluminum conductors together. Such terminal blocks are very important in power systems because directly connecting copper and aluminum may cause problems such as increased contact resistance, overheating, and corrosion, affecting the safety and stability of the electrical system.

[0003] Currently, the copper-aluminum terminal block mainly consists of a copper-aluminum connection sleeve and fastening screws installed on the copper-aluminum connection sleeve. When the copper wire and the aluminum wire are respectively inserted into the copper-aluminum connection sleeve during use, the butt joint of the copper wire and the aluminum wire is realized by screwing the screws. Although the butt joint of the copper wire and the aluminum wire can be achieved in the above docking method, the process of pressing the aluminum wire and the copper wire is mainly realized by screwing the screws one by one. Since the process of screwing the screws is relatively cumbersome, the docking and installation efficiency of the copper wire and the aluminum wire is relatively low. Summary of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide a copper-aluminum transition terminal block that can realize the rapid docking and installation of copper wires and aluminum wires through a direct press-fitting and limiting method in view of the current situation of the prior art.

[0006] (II) Technical Solutions

[0007] The utility model is realized through the following technical solutions: The utility model provides a copper-aluminum transition terminal block, which includes a copper-aluminum connection sleeve. A press-fitting assembly is installed at the upper end of the copper-aluminum connection sleeve. The press-fitting assembly includes four press columns evenly distributed at the top of the copper-aluminum connection sleeve, a connecting plate commonly installed at the tops of the four press columns, a pinch head installed at the top of the connecting plate, limiting tooth plates symmetrically installed in the middle of the two side walls of the connecting plate, limiting sleeves installed on the two side walls of the copper-aluminum connection sleeve and cooperating with the limiting tooth plates, mounting holes opened on one side wall of the limiting sleeve, a limiting dial plate installed in the mounting holes through a snap ring shaft, and springs installed outside the press columns.

[0008] Further, the copper-aluminum connection sleeve is formed by welding a copper sleeve and an aluminum sleeve, and its surface is coated with an insulating layer.

[0009] By adopting the above technical solutions, the copper-aluminum connection sleeve is the main body structure of the copper-aluminum terminal block.

[0010] Furthermore, the connecting plate is welded to the pressure column, and the pressure column penetrates the copper-aluminum wiring sleeve and is slidably connected to the copper-aluminum wiring sleeve.

[0011] By adopting the above technical solution, it is possible to ensure that the pressure column can slide conveniently relative to the copper-aluminum wiring sleeve.

[0012] Furthermore, the pressure column passes through the spring, and the spring is located between the bottom end of the connecting plate and the upper end of the copper-aluminum wiring sleeve.

[0013] By adopting the above technical solution, the spring is mainly used to realize the reset of the connecting plate after being pulled outward, so that the pressure column can be pressed into the copper-aluminum wiring sleeve with the help of the connecting plate to realize the compression and limiting of the copper wire and the aluminum wire.

[0014] Furthermore, the limiting tooth plate is an inverted L-shaped structure, and the limiting tooth plate is welded to the connecting plate.

[0015] By adopting the above technical solution, the position-limiting tooth plate cooperates with the position-limiting dial plate to realize reliable position limiting of the pressure column after it moves downward.

[0016] Furthermore, the retaining spring shaft is composed of a rotating shaft and a retaining spring installed on the outside of the rotating shaft, and the limiting plate is composed of a straight portion passing through the mounting hole and an inclined portion located in the limiting sleeve.

[0017] By adopting the above technical solution, the retaining spring shaft can realize automatic resetting of the limit switch plate after being switched.

[0018] Furthermore, the inclined portion of the limiting dial plate has the same inclination angle as the tooth pattern on the limiting tooth plate in the limiting state, and the bottom end of the mounting hole is located at the inclined portion of the limiting dial plate and is inclined downward.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] To solve the problem that the current copper-aluminum terminal mainly consists of a copper-aluminum connection sleeve and fastening screws installed on the copper-aluminum connection sleeve. When the copper wire and the aluminum wire are respectively inserted into the copper-aluminum connection sleeve during use, the connection between the copper wire and the aluminum wire is achieved by tightening the screws. Although the connection between the copper wire and the aluminum wire can be achieved in the above connection method, during the process of pressing the aluminum wire and the copper wire, it is mainly achieved by screwing the screws one by one. Since the process of screwing the screws is rather cumbersome, the connection and installation efficiency of the copper wire and the aluminum wire is relatively low. When the copper wire and the aluminum wire are respectively inserted into the copper-aluminum connection sleeve during the use of the present utility model, the pressing post extends into the copper-aluminum connection sleeve under the action of spring reset. After the pressing post is reliably pressed against the copper wire and the aluminum wire, the limiting tooth plate is limited by means of the limiting dial plate, so as to achieve the rapid pressing and fixing of the copper wire and the aluminum wire. Since in the above fixing method, the limiting dial plate is first toggled, and then the pressing post is pulled and reset once to achieve the pressing and fixing of the copper wire and the aluminum wire, the cumbersome operation of screwing the screws is omitted, thereby improving the connection and installation efficiency of the copper wire and the aluminum wire. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a copper-aluminum transition terminal according to the present utility model;

[0023] Figure 2 is a left sectional view of a copper-aluminum transition terminal according to the present utility model.

[0024] The reference numerals are explained as follows:

[0025] 1. Pressing assembly; 101. Pressing post; 102. Limiting sleeve; 103. Mounting hole; 104. Limiting dial plate; 105. Limiting tooth plate; 106. Spring; 107. Connecting plate; 108. Pinch head; 109. Circlip shaft; 2. Copper-aluminum connection sleeve. Detailed Description of the Preferred Embodiment

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model.

[0027] As Figure 1 - Figure 2As shown in the figure, a copper-aluminum transition terminal in this embodiment includes a copper-aluminum wiring sleeve 2. A pressing assembly 1 is installed at the upper end of the copper-aluminum wiring sleeve 2. The pressing assembly 1 includes four pressing columns 101 evenly distributed at the top end of the copper-aluminum wiring sleeve 2, a connecting plate 107 commonly installed at the top ends of the four pressing columns 101, a pinch head 108 installed at the top end of the connecting plate 107, limiting tooth plates 105 symmetrically installed in the middle of the two side walls of the connecting plate 107, limiting sleeves 102 installed on the two side walls of the copper-aluminum wiring sleeve 2 and cooperating with the limiting tooth plates 105, mounting holes 103 opened on one side wall of the limiting sleeves 102, a limiting dial 104 installed in the mounting holes 103 through a snap ring shaft 109, and springs 106 installed outside the pressing columns 101. The springs 106 are mainly used to realize the reset of the connecting plate 107 after being pulled outwards, so as to press the pressing columns 101 into the copper-aluminum wiring sleeve 2 by means of the connecting plate 107 to realize the pressing of copper wires and aluminum wires. The cooperation between the limiting tooth plates 105 and the limiting dial 104 can realize the reliable limiting of the pressing columns 101 after they move downwards.

[0028] As Figure 1 - Figure 2 shown in the figure, in this embodiment, the copper-aluminum wiring sleeve 2 is formed by welding a copper sleeve and an aluminum sleeve, and its surface is coated with an insulating layer. The copper-aluminum wiring sleeve 2 is the main structure of the copper-aluminum wiring terminal. The connecting plate 107 is welded to the pressing columns 101. The pressing columns 101 penetrate through the copper-aluminum wiring sleeve 2 and are slidably connected to the copper-aluminum wiring sleeve 2, which can ensure the convenient sliding of the pressing columns 101 relative to the copper-aluminum wiring sleeve 2.

[0029] As Figure 1 - Figure 2 shown in the figure, in this embodiment, the pressing columns 101 penetrate through the springs 106. The springs 106 are located between the bottom end of the connecting plate 107 and the upper end of the copper-aluminum wiring sleeve 2. The limiting tooth plates 105 are of an inverted L-shaped structure, and the limiting tooth plates 105 are welded to the connecting plate 107. The snap ring shaft 109 is composed of a rotating shaft and a snap ring installed outside the rotating shaft. The limiting dial 104 is composed of a straight part penetrating through the mounting hole 103 and an inclined part located inside the limiting sleeve 102. The snap ring shaft 109 can realize the automatic reset of the limiting dial 104 after it is toggled. The inclined part of the limiting dial 104 has the same inclination angle as the tooth pattern on the limiting tooth plate 105 in the limiting state, and the bottom end of the mounting hole 103 is of an inclined downward structure at the inclined part of the limiting dial 104.

[0030] The specific implementation process of this embodiment is as follows: When it is necessary to butt-join a copper wire and an aluminum wire, first, move the pressing column 101 upward through the pinching head 108. Then, insert the copper wire and the aluminum wire into both ends of the copper-aluminum connection sleeve 2 respectively. Next, release the pinching head 108 to make the pressing column 101 move downward under the action of the spring 106. After the pressing column 101 moves downward, continue to press the connecting plate 107 to ensure reliable pressing of the copper wire and the aluminum wire by the pressing column 101. Finally, just release the pinching head 108, and the limiting tooth plate 105 can be limited under the action of the limiting dial 104 to ensure reliable pressing and limiting of the pressing column 101. Since in the above fixing method, the limiting dial 104 is first toggled, and then the pressing column 101 is pulled and reset once to realize the pressing and fixing of the copper wire and the aluminum wire, the cumbersome operation of screwing the screw is omitted, thereby improving the butt-joint installation efficiency of the copper wire and the aluminum wire.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A copper-aluminum transition terminal, characterized in that: The invention comprises a copper-aluminum wiring sleeve (2), wherein a press-fitting assembly (1) is installed at the upper end of the copper-aluminum wiring sleeve (2), wherein the press-fitting assembly (1) comprises four press columns (101) evenly distributed at the top end of the copper-aluminum wiring sleeve (2), a connecting plate (107) installed together at the top ends of the four press columns (101), a pinch head (108) installed at the top end of the connecting plate (107), a limit tooth plate (105) symmetrically installed at the middle of two side walls of the connecting plate (107), a limit sleeve (102) installed on two side walls of the copper-aluminum wiring sleeve (2) and cooperating with the limit tooth plate (105), a mounting hole (103) provided on one side wall of the limit sleeve (102), a limit plate (104) installed in the mounting hole (103) via a retaining spring shaft (109), and a spring (106) installed on the outside of the press column (101).

2. The copper-aluminum transition terminal according to claim 1, characterized in that: The copper-aluminum wiring sleeve (2) is formed by welding a copper sleeve and an aluminum sleeve, and its surface is coated with an insulating layer.

3. The copper-aluminum transition terminal according to claim 2, characterized in that: The connection plate (107) is welded to the pressure column (101), and the pressure column (101) penetrates the copper-aluminum wiring sleeve (2) and is slidably connected to the copper-aluminum wiring sleeve (2).

4. The copper-aluminum transition terminal according to claim 1, characterized in that: The pressure column (101) passes through the spring (106), and the spring (106) is located between the bottom end of the connecting plate (107) and the top end of the copper-aluminum wiring sleeve (2).

5. The copper-aluminum transition terminal according to claim 1, characterized in that: The limiting tooth plate (105) is an inverted L-shaped structure, and the limiting tooth plate (105) is welded to the connecting plate (107).

6. The copper-aluminum transition terminal according to claim 1, characterized in that: The retaining spring shaft (109) is composed of a rotating shaft and a retaining spring installed on the outside of the rotating shaft, and the limiting plate (104) is composed of a straight portion passing through the mounting hole (103) and an inclined portion located in the limiting sleeve (102).

7. The copper-aluminum transition terminal according to claim 6, characterized in that: The inclined portion of the limit plate (104) has the same inclination angle as the tooth pattern on the limit tooth plate (105) in the limit state, and the bottom end of the mounting hole (103) is located at the inclined portion of the limit plate (104) and is inclined downward.

Images