A dual wire terminal
By combining the lifting and clamping components, the problem of cable wear and slippage caused by vibration and temperature changes is solved, and a stable connection of the terminal block is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCED ELECTRONICS CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-10
AI Technical Summary
Existing double-wire terminal blocks are prone to periodic lateral swaying of the cable due to vibrations and temperature changes from external equipment during prolonged use, resulting in wear on the clamping surface and cable slippage, which affects the stability of use.
The design employs a combination of a lifting assembly, a first clamping assembly, a second clamping assembly, and a limiting assembly. Through structures such as a lifting plate, a sliding rod, an arc-shaped clamping plate, an inclined block, and a spring, it achieves stable clamping of the cable and limits the loosening of the screw by using a limiting plate and a U-shaped push plate to prevent the cable from loosening and slipping.
It effectively prevents cables from loosening due to vibration and temperature changes, improves the stability and fixation of cable connections, and avoids cable slippage.
Smart Images
Figure CN224481244U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of terminal blocks, and more specifically, to a two-wire terminal block. Background Technology
[0002] Terminal blocks are accessories used to achieve electrical connections. Industrially, they fall under the category of connectors. With increasing industrial automation and more stringent and precise industrial control requirements, the use of terminal blocks is gradually rising. As the electronics industry develops, the applications of terminal blocks are expanding, and the types are also increasing. Besides PCB board terminals, the most widely used types include metal terminals, nut terminals, and spring terminals.
[0003] However, existing terminal blocks operate in diverse environments, and without protection, they can be damaged, causing electrical components to malfunction. Therefore, they do not meet current requirements. To address this, we propose a double-wire terminal block.
[0004] Chinese patent application CN221226601U discloses a double-wire terminal block, relating to the field of terminal block technology. It addresses the problem that existing terminal blocks, operating in diverse environments, can be damaged without protection, leading to malfunctions in electrical components. The double-wire terminal block includes a terminal block end and a protective shell. A terminal connection structure is fixedly connected to the upper and lower ends of the terminal block end, connecting the two parts. A first double-wire connector is embedded and fixedly connected to the upper end of the terminal block end; a second double-wire connector is embedded and fixedly connected to the upper end of the terminal block end; a first double-wire outlet is embedded and fixedly connected to the lower end of the protective shell; and a second double-wire outlet is embedded and fixedly connected to the lower end of the protective shell.
[0005] The above solution also has the following shortcomings: Double-wire terminals are generally connected to external equipment. Therefore, under long-term use, the vibration and temperature changes generated by the external equipment can easily cause the cable to sway periodically. At this time, a continuous lateral friction force will be generated between the clamp and the cable, which will gradually wear down the clamping surface and even cause the cable to slip off, thus affecting the use of the terminal. Utility Model Content
[0006] To overcome the above shortcomings, this utility model provides a double-wire terminal block, which aims to improve the problem that vibrations and temperature changes generated by external equipment can easily cause periodic lateral swaying of cables. At this time, continuous lateral friction will be generated between the clamp and the cable, which will gradually wear down the clamping surface and even cause the cable to slip off, thus affecting the use of the terminal block.
[0007] This utility model provides a dual-wire terminal block, including a terminal block protective shell. Two terminals and two outlet terminals are arranged opposite each other inside the terminal block protective shell. A lifting component is fixedly connected to one side of the terminal block protective shell. A first clamping component is provided inside each of the two terminals. The lifting component is fixedly connected to the first clamping component. A second clamping component is fixedly connected to one side of the terminal block protective shell. A limit component is provided on one side of the second clamping component.
[0008] In one specific implementation, the lifting assembly includes a fixed plate fixedly connected to one side of the terminal protective shell. The fixed plate is threadedly connected to a screw, and one end of the screw is rotatably connected to a lifting plate. The lifting plate is parallel to the fixed plate, and two L-shaped connecting plates are fixedly connected to the top of the lifting plate. The L-shaped connecting plates are slidably connected to the fixed plate.
[0009] In the above implementation process, the setting of the fixed plate, screw and L-shaped connecting plate can facilitate the lifting of the lifting plate.
[0010] In one specific implementation, a bearing is embedded on one side of the lifting plate, and one end of the screw is interference-fitted with the inner ring of the bearing.
[0011] In the above implementation process, by interfering with the inner ring of the bearing at one end of the screw, the lifting plate can be raised and lowered easily, while also reducing the losses generated during rotation.
[0012] In one specific implementation, the first clamping assembly includes a support rod fixedly connected to a connector, a sliding rod slidably connected to the connector, an arc-shaped clamping plate fixedly connected to one end of the support rod and the sliding rod, and the top of the sliding rod fixedly connected to the bottom of the lifting plate.
[0013] In the above implementation process, the support rod, sliding rod and arc-shaped clamp can be set to easily clamp external cables, thereby facilitating the connection between the terminal block and the cable.
[0014] In one specific implementation, the second clamping assembly includes two L-shaped support plates fixedly connected to one side of the terminal protective shell. An inclined plate is fixedly connected to one side of the terminal protective shell, a sliding plate is slidably connected inside the inclined plate, a movable plate is fixedly connected to one side of the sliding plate, an inclined block is slidably connected to one end of the movable plate, a spring is fixedly connected inside the inclined block, and the other end of the spring is fixedly connected to the movable plate.
[0015] In the above implementation process, the L-shaped support plate, inclined plate, sliding plate, moving plate, inclined block and spring can be set up to further clamp the cable, and avoid maintaining a tight clamp on the cable under the condition of external equipment vibration or temperature change, thereby improving the stability of the cable connection.
[0016] In one specific implementation, the limiting component includes a U-shaped push plate fixedly connected to one side of the movable plate, and two limiting plates are fixedly connected inside the U-shaped push plate, with the two limiting plates respectively abutting against both sides of the screw.
[0017] In the above implementation process, the U-shaped push plate and the limiting plate can limit the screw, thereby restricting the rotation of the screw and preventing the cable from becoming loose and slipping off due to the loose screw.
[0018] In one specific implementation, two L-shaped clips are fixedly connected to one side of the terminal protective shell, and each of the two L-shaped clips has a bevel on one side.
[0019] In the above implementation process, the L-shaped card block is flexible, and the L-shaped card block can be used to limit the position of the U-shaped push plate.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] By using the lifting component in conjunction with the first clamping component, external cables can be easily clamped and fixed, making installation convenient.
[0022] The second clamping component allows for easier clamping of the cable, improving the fixation effect and preventing vibrations and temperature changes from external devices from affecting the clamping performance during prolonged use.
[0023] By setting the limiting component, the limiting screw can be stopped synchronously after the second clamping component has finished clamping, thereby preventing the screw from loosening and causing the cable to loosen and slip off. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of a double-wire terminal block structure provided by an embodiment of the present invention;
[0026] Figure 2A side view of a double-wire terminal block provided for an embodiment of this utility model;
[0027] Figure 3 A schematic diagram illustrating the connection relationship between the terminal protective shell, terminal head, lifting assembly, and clamping assembly provided for an embodiment of this utility model;
[0028] Figure 4 A cross-sectional view of a double-wire terminal block provided for an embodiment of this utility model;
[0029] Figure 5 A top view of a double-wire terminal block provided for an embodiment of this utility model;
[0030] Figure 6 for Figure 5 Enlarged view of point A;
[0031] Figure 7 A schematic diagram of the second clamping component structure provided for an embodiment of this utility model.
[0032] In the diagram: 1. Terminal block protective shell; 2. Terminal head; 21. Outlet head; 3. Lifting assembly; 31. Fixing plate; 32. Lifting plate; 33. Screw; 34. L-shaped connecting plate; 4. First clamping assembly; 41. Support rod; 42. Sliding rod; 43. Arc-shaped clamping plate; 5. Second clamping assembly; 51. L-shaped support plate; 52. Inclined plate; 53. Slide plate; 54. Moving plate; 55. Inclined block; 56. Spring; 6. Bearing; 7. Limiting assembly; 71. U-shaped push plate; 72. Limiting plate; 8. L-shaped locking block. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0034] Please see Figure 1 This utility model provides a double-wire terminal block, including a terminal block protective shell 1. Two terminals 2 and two outlet terminals 21 are arranged opposite each other inside the terminal block protective shell 1. A lifting component 3 is fixedly connected to one side of the terminal block protective shell 1. A first clamping component 4 is provided inside each of the two terminals 2. The lifting component 3 is fixedly connected to the first clamping component 4. A second clamping component 5 is fixedly connected to one side of the terminal block protective shell 1. A limit component 7 is provided on one side of the second clamping component 5.
[0035] Please see Figures 1-6The lifting assembly 3 includes a fixed plate 31 fixedly connected to one side of the terminal protective shell 1. The fixed plate 31 is threadedly connected to a screw 33. One end of the screw 33 is rotatably connected to a lifting plate 32. The lifting plate 32 is parallel to the fixed plate 31. Two L-shaped connecting plates 34 are fixedly connected to the top of the lifting plate 32. The L-shaped connecting plates 34 are slidably connected to the fixed plate 31. The setting of the fixed plate 31, screw 33 and L-shaped connecting plates 34 can easily drive the lifting plate 32 to rise and fall.
[0036] In the specific configuration, a bearing 6 is embedded on one side of the lifting plate 32, and one end of the screw 33 is interference-fitted with the inner ring of the bearing 6. The interference fit between the screw 33 and the inner ring of the bearing 6 facilitates the lifting and lowering of the lifting plate 32, while also reducing the wear and tear during rotation.
[0037] In a specific configuration, the first clamping assembly 4 includes a support rod 41 fixedly connected to the connector 2, a sliding rod 42 slidably connected to the connector 2, an arc-shaped clamping plate 43 fixedly connected to one end of the support rod 41 and the sliding rod 42, and the top of the sliding rod 42 fixedly connected to the bottom of the lifting plate 32. The configuration of the support rod 41, the sliding rod 42 and the arc-shaped clamping plate 43 facilitates the clamping of external cables, thereby facilitating the connection between the connector and the cable.
[0038] In a specific configuration, the second clamping assembly 5 includes two L-shaped support plates 51 fixedly connected to one side of the terminal protective shell 1. A ramp 52 is fixedly connected to one side of the terminal protective shell 1. A slide plate 53 is slidably connected inside the ramp 52. A movable plate 54 is fixedly connected to one side of the slide plate 53. A ramp 55 is slidably connected to one end of the movable plate 54. A spring 56 is fixedly connected inside the ramp 55, and the other end of the spring 56 is fixedly connected to the movable plate 54. The arrangement of the L-shaped support plates 51, ramp 52, slide plate 53, movable plate 54, ramp 55, and spring 56 facilitates further clamping of the cable, preventing the cable from being tightly clamped under external equipment vibration or temperature changes, thus improving the stability of the cable connection. Both the ramp 52 and the ramp 55 are provided with ramps.
[0039] Please see Figures 1-2 and Figures 5-6 The limiting component 7 includes a U-shaped push plate 71 fixedly connected to one side of the movable plate 54. Two limiting plates 72 are fixedly connected inside the U-shaped push plate 71. The two limiting plates 72 are respectively attached to both sides of the screw 33. The U-shaped push plate 71 and the limiting plates 72 can limit the screw 33, thereby restricting the rotation of the screw 33 and preventing the cable from loosening and slipping due to the loosening of the screw 33.
[0040] In the specific setup, two L-shaped locking blocks 8 are fixedly connected to one side of the terminal protective shell 1. Each of the two L-shaped locking blocks 8 has a bevel on one side. The L-shaped locking blocks 8 are elastic, and the L-shaped locking blocks 8 facilitate the positioning of the U-shaped push plate 71.
[0041] The working principle of this double-wire terminal block is as follows: When using the double-wire terminal block, first insert the cable into the terminal 2. The user then rotates the screw 33 using an external tool, causing the lifting plate 32 to slowly descend under the limit of the L-shaped connecting plate 34. The lifting plate 32 drives the sliding rod 42 to slide within the terminal 2, causing the sliding rod 42 to approach and clamp the cable with the arc-shaped clamping plate 43 on the support rod 41. Subsequently, the U-shaped push plate 71 is pushed, causing the moving plate 54 to move synchronously, making the sliding plate 53 slide within the inclined plate 52 until the inclined surface of the inclined block 55 is in contact with the inclined surface of the moving plate 54. Through the mutual compression between the inclined surfaces, the inclined block 55 moves... The moving plate 54 slides and stretches the spring 56, so that the inclined block 55 gradually clamps the cable, which can facilitate further clamping of the cable and improve the fixing effect. It avoids the impact of vibration and temperature changes caused by external equipment on the clamping effect during long-term use. During the movement, the U-shaped push plate 71 squeezes the inclined surface of the L-shaped card block 8 until the L-shaped card block 8 is engaged with the U-shaped push plate 71. During the movement of the U-shaped push plate 71, the two limiting plates 72 move synchronously. After the L-shaped card block 8 is engaged with the U-shaped push plate 71, the two limiting plates 72 are just completely attached to both sides of the screw 33, thereby preventing the screw 33 from loosening and causing the cable to loosen and slip off.
[0042] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A double-wire terminal block, comprising a terminal block protective housing (1), characterized in that: The terminal protective shell (1) has two terminals (2) and two outlet terminals (21) arranged opposite to each other. A lifting assembly (3) is fixedly connected to one side of the terminal protective shell (1). A first clamping assembly (4) is provided in each of the two terminals (2). The lifting assembly (3) is fixedly connected to the first clamping assembly (4). A second clamping assembly (5) is fixedly connected to one side of the terminal protective shell (1). A limit assembly (7) is provided on one side of the second clamping assembly (5).
2. A double-wire terminal block according to claim 1, characterized in that, The lifting assembly (3) includes a fixed plate (31) fixedly connected to one side of the terminal protective shell (1). The fixed plate (31) is threadedly connected to a screw (33). One end of the screw (33) is rotatably connected to a lifting plate (32). The lifting plate (32) is parallel to the fixed plate (31). Two L-shaped connecting plates (34) are fixedly connected to the top of the lifting plate (32). The L-shaped connecting plates (34) are slidably connected to the fixed plate (31).
3. A double-wire terminal block according to claim 2, characterized in that, The lifting plate (32) is fitted with a bearing (6) on one side, and one end of the screw (33) is interference-fitted with the inner ring of the bearing (6).
4. A double-wire terminal block according to claim 2, characterized in that, The first clamping assembly (4) includes a support rod (41) fixedly connected to the connector (2), a sliding rod (42) slidably connected to the connector (2), an arc-shaped clamping plate (43) fixedly connected to one end of the support rod (41) and the sliding rod (42), and the top of the sliding rod (42) fixedly connected to the bottom of the lifting plate (32).
5. A double-wire terminal block according to claim 4, characterized in that, The second clamping assembly (5) includes two L-shaped support plates (51) fixedly connected to one side of the terminal protective shell (1). A sloping plate (52) is fixedly connected to one side of the terminal protective shell (1). A sliding plate (53) is slidably connected inside the sloping plate (52). A movable plate (54) is fixedly connected to one side of the sliding plate (53). A sloping block (55) is slidably connected to one end of the movable plate (54). A spring (56) is fixedly connected inside the sloping block (55), and the other end of the spring (56) is fixedly connected to the movable plate (54).
6. A double-wire terminal block according to claim 5, characterized in that, The limiting component (7) includes a U-shaped push plate (71) fixedly connected to one side of the moving plate (54), and two limiting plates (72) are fixedly connected inside the U-shaped push plate (71). The two limiting plates (72) are respectively attached to both sides of the screw (33).
7. A double-wire terminal block according to claim 1, characterized in that, Two L-shaped clips (8) are fixedly connected to one side of the terminal protective shell (1), and each of the two L-shaped clips (8) has a bevel on one side.