High-voltage terminal with shock-absorbing buffer
By installing tensile buffer components and shock-absorbing pads inside the high-voltage terminals, the problems of easy wire pull-out and poor waterproof performance are solved, thereby improving the stability and safety of wire connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG EXPLOSION-PROOF DEVICE FACTORY CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-16
AI Technical Summary
Existing high-voltage terminals are prone to being pulled off by external forces when connecting wires, leading to line interruption. They also have poor waterproof performance and are prone to corrosion, affecting equipment safety and reliability.
An anti-tension buffer assembly is installed inside the terminal block, including a limiting groove, a slider, a buffer rod, and a buffer spring. The elasticity of the buffer spring prevents the wire from being pulled out, and a shock-absorbing pad is installed on the inner bottom wall to reduce the impact of vibration.
It effectively prevents the conductor from being pulled off by external tension, improves the reliability of the connection, and reduces the loosening of the locking screws caused by vibration through the shock-absorbing pad, ensuring stable operation of the line.
Smart Images

Figure CN224367137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of terminal block technology, specifically a high-voltage terminal block with shock absorption and buffer. Background Technology
[0002] High-voltage terminal blocks are electrical connection devices used for connecting and distributing high-voltage circuits. They connect high-voltage power sources, cables, wires, and electrical equipment, providing reliable electrical connections to ensure the correct transmission of current within the high-voltage circuit. They distribute power to different electrical devices, components, and loads, allowing high-voltage power to be transferred from one location to another to meet the energy needs of different devices. They play a crucial role in high-voltage circuits by providing rated current and voltage markings to ensure that equipment and wiring are not overloaded. Safety features such as arc protection and electric shock protection designs may also be included to reduce the risk of accidents. They provide electrical isolation and safety, ensuring reliable circuit operation and reducing potential hazards in high-voltage circuits.
[0003] Utility model patent CN209088094U discloses a high-voltage terminal block structure, including a housing, a cover, a connector, a clamp, and an inlet. The housing has three inlets evenly spaced laterally on both the front and back sides, and these inlets are symmetrically arranged. The housing has an opening at the top, with a cover at the opening. The connector and clamp are installed inside the housing. The clamp consists of a connector, an arc-shaped plate, a stud, a locating pin, and a nut. This utility model addresses the problem that most existing terminals have poor waterproofing, allowing water to easily seep into the terminal, causing corrosion and, in severe cases, even burning out electrical appliances, resulting in irreparable economic losses and affecting the use of electrical appliances, causing considerable inconvenience.
[0004] However, this high-voltage terminal block structure is prone to detachment when the connected wires are subjected to external tension, leading to line interruption. Therefore, a high-voltage terminal block with shock absorption and buffer is proposed to solve the above-mentioned problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a high-voltage terminal block with shock absorption and buffering, which has the advantages of buffering the connected wires and reducing the probability of the wires being pulled out, thus solving the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A high-voltage terminal block with shock absorption and buffer includes a housing, a terminal connector is provided inside the housing, and a tensile buffer assembly is provided inside the housing;
[0008] The tensile buffer assembly includes four limiting grooves fixedly installed on the inner side wall of the housing. A slider is slidably installed inside the limiting groove. A buffer rod is fixedly installed between two sliders. A buffer spring is fixedly installed on the top of the slider. A mounting top plate is fixedly installed on the inner side wall of the housing. The top of the buffer spring is fixedly connected to the bottom of the mounting top plate.
[0009] Furthermore, wiring holes are provided on both sides of the terminal connector that are far apart from each other, and the wiring holes are adapted to the wire cores of the wires.
[0010] Furthermore, the outer casing has wire holes on both sides that are far apart from each other, and the wire holes are adapted to the wires.
[0011] Furthermore, the top of the terminal connector is threaded with a locking screw, the bottom end of which extends into the interior of the wiring hole.
[0012] Furthermore, several shock-absorbing pads are fixedly installed on the inner bottom wall of the housing, and terminal connectors are fixedly installed on the top of the shock-absorbing pads.
[0013] Furthermore, a mounting block is fixedly installed on the surface of the outer casing, and a top cover is provided on the top of the outer casing.
[0014] Furthermore, the top of the outer shell is provided with a mounting screw hole, and the top of the top cover is provided with a mounting screw, which is adapted to the mounting screw hole.
[0015] Compared with the prior art, this utility model provides a high-voltage terminal block with shock absorption and buffer, which has the following beneficial effects:
[0016] 1. This high-voltage terminal block with shock absorption and buffer features a limiting groove inside the housing, a slider inside the limiting groove, a buffer rod between two sliders, and a buffer spring on top of the sliders. The top of the buffer spring is fixedly connected to the mounting plate. During wiring, the wire is routed around the bottom of the buffer rod before connecting to the terminal connector. The buffer rod presses the wire downward inside the housing, leaving a section inside so that when the wire is pulled by external force, it is pulled out but not directly detached. When the pulling force disappears, the buffer spring pushes the buffer rod downward to reset the wire. This solves the problem of common high-voltage terminal block structures where the connected wire is easily pulled out when subjected to external tension, leading to line interruption.
[0017] 2. This high-voltage terminal block with shock absorption and buffer is equipped with a shock-absorbing pad on the inner bottom wall of the housing. The terminal connector is installed on top of the shock-absorbing pad, and the shock-absorbing pad absorbs the vibration of the terminal connector to prevent the terminal connector from being vibrated, which could cause the locking screw to loosen and cause circuit failure. Attached Figure Description
[0018] Figure 1 This is a front sectional view of the structure of this utility model;
[0019] Figure 2 This is a top sectional view of the structure of this utility model;
[0020] Figure 3 This is a side sectional view of the structure of this utility model;
[0021] Figure 4 This is a three-dimensional view of the buffer rod of this utility model.
[0022] In the diagram: 1. Outer shell; 101. Mounting screw hole; 2. Terminal connector; 3. Limiting groove; 4. Slider; 5. Buffer rod; 6. Buffer spring; 7. Mounting top plate; 8. Wiring hole; 9. Wire hole; 10. Locking screw; 11. Shock-absorbing pad; 12. Mounting block; 13. Top cover; 14. Mounting screw. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 4 In this embodiment, a high-voltage terminal block with shock absorption and buffer includes a housing 1, a terminal connector 2 is provided inside the housing 1, and a tensile buffer assembly is provided inside the housing 1.
[0025] The tensile buffer assembly includes four limiting grooves 3 fixedly installed on the inner side wall of the outer shell 1. A slider 4 is slidably installed inside the limiting groove 3. A buffer rod 5 is fixedly installed between two sliders 4. A buffer spring 6 is fixedly installed on the top of the slider 4. A mounting plate 7 is fixedly installed on the inner side wall of the outer shell 1. The top of the buffer spring 6 is fixedly connected to the bottom of the mounting plate 7.
[0026] Specifically, the wire is connected to the terminal connector 2 by passing it around the bottom of the buffer rod 5. The slider 4 is pressed down by the buffer spring 6, which in turn presses down the buffer rod 5, causing the wire to bend in the housing 1. When the wire is subjected to external tension, the buffer rod 5 rises and the wire is pulled out, preventing the tension from acting directly on the connection of the terminal connector 2 and preventing the wire from being pulled off. After the tension disappears, the buffer spring 6 returns to its original position and retracts the pulled-out wire.
[0027] Please see Figure 1 and Figure 3In this embodiment, wiring holes 8 are provided on both sides of the terminal connector 2 that are far apart from each other, and the wiring holes 8 are adapted to the wire cores of the wires.
[0028] The outer casing 1 has wire holes 9 on both sides that are far apart from each other. The wire holes 9 are adapted to the wires. The wires are passed into the interior of the outer casing 1 through the wire holes 9, and the wire cores are passed into the wiring holes 8 and electrically connected through the terminal connectors 2.
[0029] Please see Figure 1 and Figure 2 In this embodiment, a locking screw 10 is threaded onto the top of the terminal connector 2, and the bottom end of the locking screw 10 extends into the interior of the wiring hole 8. Tightening the locking screw 10 presses the wire core into the wiring hole 8.
[0030] The inner bottom wall of the outer casing 1 is fixedly equipped with several shock-absorbing pads 11, and the terminal connector 2 is fixedly installed on top of the shock-absorbing pads 11. The shock-absorbing pads 11 dampen the terminal connector 2, preventing the locking screw 10 from loosening when there is vibration in the working environment.
[0031] Secondly, a mounting block 12 is fixedly installed on the surface of the outer casing 1, and a top cover 13 is provided on the top of the outer casing 1. The outer casing 1 is mounted on the mounting surface by means of the mounting block 12.
[0032] Finally, the top of the outer casing 1 is provided with a mounting screw hole 101, and the top of the top cover 13 is provided with a mounting screw 14, which is adapted to the mounting screw hole 101.
[0033] The working principle of the above embodiment is as follows: the wire is connected to the terminal connector 2 by passing the bottom of the buffer rod 5, the slider 4 is pressed down by the buffer spring 6, and the buffer rod 5 is pressed down, so that the wire bends in the housing 1. When the wire is subjected to external tension, the buffer rod 5 rises and the wire is pulled out, so that the tension does not act directly on the connection of the terminal connector 2.
[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.
[0035] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-voltage terminal block with shock absorption and buffer, comprising a housing (1), characterized in that: The housing (1) is provided with a terminal connector (2) inside, and the housing (1) is provided with a tensile buffer assembly inside; The tensile buffer assembly includes four limiting grooves (3) fixedly installed on the inner side wall of the outer shell (1). A slider (4) is slidably installed inside the limiting groove (3). A buffer rod (5) is fixedly installed between two sliders (4). A buffer spring (6) is fixedly installed on the top of the slider (4). A mounting plate (7) is fixedly installed on the inner side wall of the outer shell (1). The top of the buffer spring (6) is fixedly connected to the bottom of the mounting plate (7).
2. The high-voltage terminal block with shock absorption and buffer according to claim 1, characterized in that: The terminal connector (2) has wiring holes (8) on both sides that are far apart from each other, and the wiring holes (8) are adapted to the wire cores of the conductor.
3. A high-voltage terminal block with shock absorption and buffer according to claim 1, characterized in that: The outer shell (1) has wire holes (9) on both sides that are far apart from each other, and the wire holes (9) are adapted to the wires.
4. A high-voltage terminal block with shock absorption and buffer according to claim 1, characterized in that: The top of the terminal connector (2) is threaded with a locking screw (10), and the bottom end of the locking screw (10) extends into the interior of the wiring hole (8).
5. A high-voltage terminal block with shock absorption and buffer according to claim 1, characterized in that: A number of shock-absorbing pads (11) are fixedly installed on the inner bottom wall of the outer shell (1), and the terminal connector (2) is fixedly installed on the top of the shock-absorbing pads (11).
6. A high-voltage terminal block with shock absorption and buffer according to claim 1, characterized in that: An mounting block (12) is fixedly installed on the surface of the outer shell (1), and a top cover (13) is provided on the top of the outer shell (1).
7. A high-voltage terminal block with shock absorption and buffer according to claim 6, characterized in that: The top of the outer shell (1) is provided with a mounting screw hole (101), and the top of the top cover (13) is provided with a mounting screw (14), which is compatible with the mounting screw hole (101).