Novel structure of contact pull rod of contactor
By designing a new structure of contact pull rod, the contact bridge assembly of the contactor is simplified, the problems of complex structure and assembly difficulties of traditional contactors are solved, and low-cost, efficient assembly and stable and reliable contactor performance are achieved.
Patent Information
- Application Number
- CN202422304887.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The structure of traditional contactors is complex, which leads to high manufacturing costs and difficult assembly, especially the difficulty of flip-fitting lever during assembly.
A new type of contact pull rod structure is designed, including contact bridge support, support spring seat, dynamic contact bridge assembly and contact bridge pressure spring. By setting a transition structure and limit block on the inner wall of the contact bridge pull rod, the structure is simplified, the demand for additional accessories is reduced, and the assembly efficiency and stability are improved through the matching of the boss and contact bridge pressure spring.
It reduces manufacturing costs, improves assembly efficiency, enhances the stability and reliability of the contact bridge assembly, and reduces the problem of poor contact caused by loose or deformation of the structure.
Smart Images
Figure CN223092779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of contactors, in particular to a novel structure of a contact rod of a contactor. Background Art
[0002] As an important component in an electrical control system, a contactor is widely used in various power equipment and control systems. In the structure of a contactor, the stability and reliability of the contact bridge assembly directly affect the overall performance of the contactor. In a traditional contactor, the contact bridge assembly usually provides the required contact pressure through a contact bridge rod and a contact bridge compression spring to ensure good contact between the moving contact bridge and the static contact. As one of the key components of the contact bridge assembly, the design form of the contact bridge rod is mainly divided into two types: a direct-mounted rod and an inverted-mounted rod. The direct-mounted rod usually requires additional accessories on the contact bridge side to assist its installation and positioning, which increases the structural complexity and manufacturing cost. The inverted-mounted rod is relatively simple and does not require additional accessories on the contact bridge side, but it faces certain difficulties during the assembly process. Content of the Utility Model
[0003] In view of this, the purpose of the utility model is to provide a novel structure of a contact rod of a contactor with a simple structure, low manufacturing cost and fast assembly efficiency.
[0004] In order to achieve the above purpose, the utility model adopts such a novel structure of a contact rod of a contactor, which includes a housing and a contact bridge assembly arranged in the housing. The contact bridge assembly includes a contact bridge support, a contact bridge rod, a support spring seat, a moving contact bridge assembly and a contact bridge compression spring. The characteristics are as follows: the contact bridge rod is movably arranged in the contact bridge support, a horizontally penetrating clamping groove is arranged on the contact bridge support, a support spring seat is clamped in the clamping groove, one end of the support spring seat is connected with the moving contact bridge assembly, the other end abuts against the contact bridge compression spring, the other end of the contact bridge compression spring abuts against the lower end opening of the contact bridge rod, and transition structures extending towards the support spring seat are arranged on both sides of the inner wall of the contact bridge rod. The transition structures form a limit for the support spring seat and an auxiliary support for the contact bridge compression spring in the contact bridge rod.
[0005] The utility model is further provided that the transition structure is a limit block.
[0006] Compared with the prior art, the beneficial effects of the above structure are as follows: Through the transition structures on both sides of the inner wall of the contact bridge pull rod, effective limiting of the support spring seat is achieved. At the same time, when the support spring seat is not installed, it also provides auxiliary support for the contact bridge compression spring, reducing the need for additional accessories, simplifying the overall structure, thus reducing the manufacturing cost. And due to the existence of the transition structures, the support spring seat can be more accurately positioned during installation, reducing the adjustment and calibration work during the assembly process, improving the assembly efficiency. In addition, the transition structures also facilitate the subsequent installation steps, making the assembly process of the entire contact bridge assembly smoother.
[0007] This utility model is further configured such that a boss is formed at the lower end opening of the contact bridge pull rod, which is matched with the internal space of the contact bridge compression spring and penetrates into the contact bridge compression spring. Through the boss, the contact between the contact bridge pull rod and the contact bridge compression spring is made closer and more stable. Since the boss penetrates into the contact bridge compression spring, it effectively restricts the lateral movement or deviation of the contact bridge compression spring when under pressure, thus ensuring the stability and reliability of the contact bridge assembly during operation.
[0008] This utility model is further configured such that the moving contact bridge assembly includes a moving contact bridge, a contact bridge plate provided on the moving contact bridge, and a contact bridge plate spring provided on the contact bridge plate. The moving contact bridge includes a moving contact point and a conductive plate integrally formed with the moving contact point. The contact bridge plate is mounted on the conductive plate, and the contact bridge plate is of an outer cover type structure and covers the conductive plate. By adopting the outer cover type structure design for the contact bridge plate, it can closely cover the conductive plate, providing additional support and protection for the conductive plate, enhancing the overall structural strength of the moving contact bridge assembly, making it more stable and reliable when subjected to external forces or vibrations, and reducing the problem of poor contact caused by structural looseness or deformation.
[0009] This utility model is further configured such that a bent portion extending downward is formed at the peripheral edge of the contact bridge plate, and the bent portion covers the front end and both side regions of the conductive plate. Through the design of the bent portion, the protection ability of the contact bridge plate for the conductive plate is enhanced. It not only covers the front end of the conductive plate but also extends to both side regions, forming a comprehensive protection barrier, enabling it to effectively prevent external impurities, dust, moisture, etc. from entering the contact area between the conductive plate and the contact bridge plate.
[0010] This utility model is further configured such that a contact point welding surface is provided on the inner surface of the contact bridge plate. The contact point welding surface is located inside the bent portion, contacts the conductive plate, and is electrically connected to the conductive plate. By directly contacting the conductive plate through the contact point welding surface and achieving electrical connection through welding, it reduces the risk of electrical failures caused by poor contact or looseness, improving the working stability and reliability of the contactor.
[0011] The present invention is further configured such that a groove corresponding to the position of the contact welding surface is provided on the upper surface of the touch bridge plate, the groove is used to position and connect one end of the touch bridge leaf spring, the shape of the touch bridge leaf spring is an M-shaped structure, the touch bridge leaf spring has a central depressed portion, and a high peak portion extending from the central depressed portion to both sides, the high peak portion is bent downward to form a connecting arm, and the end of the connecting arm extends horizontally outward to form a contact section that fits with the upper surface of the groove edge, and a positioning column that matches the central depressed portion of the touch bridge leaf spring is also formed on the top back of the touch bridge pull rod. The M-shaped structure of the contact bridge leaf spring has a central depression and a high peak extending from the center to both sides, so that it can better disperse stress when subjected to force and improve the bearing capacity and durability of the overall structure. The connecting arm formed by bending downward at the high peak and the contact section extending horizontally outward at the end of the connecting arm fit tightly with the upper surface of the groove edge to achieve a stable connection. The central depression of the contact bridge leaf spring cooperates with the semi-cylindrical portion on the contact bridge pull rod to ensure that the contact bridge leaf spring can be accurately aligned and fixed in a predetermined position during installation to prevent it from shifting or loosening during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the shell structure of an embodiment of the utility model.
[0013] Figure 2 It is a schematic diagram of the structure of the contact bridge assembly in the housing of an embodiment of the utility model.
[0014] Figure 3 It is an exploded schematic diagram of a contact bridge assembly according to an embodiment of the utility model.
[0015] Figure 4 It is a schematic diagram of the contact bridge pull rod structure of an embodiment of the utility model.
[0016] Figure 5 It is a schematic structural diagram of a moving contact bridge assembly according to an embodiment of the utility model.
[0017] Figure 6 It is an exploded schematic diagram of the moving contact bridge assembly of an embodiment of the utility model.
[0018] Figure 7 It is an exploded schematic diagram of a contact bridge plate and a contact bridge plate spring according to an embodiment of the utility model. DETAILED DESCRIPTION
[0019] like Figures 1-7 As shown, an embodiment of the utility model provides a new structure of a contact pull rod of a contactor, including a shell 1, a contact bridge assembly 2 arranged in the shell 1, the contact bridge assembly 2 includes a contact bridge support 3, and three groups of sub-assemblies each consisting of a contact bridge pull rod 4, a support spring seat 5, a moving contact bridge assembly 6 and a contact bridge compression spring 7.
[0020] As Figure 3 shown, each contact bridge pull rod 4 is movably arranged in the contact bridge support 3. Transverse through slots 31 corresponding to the number of contact bridge pull rods 4 are formed in the contact bridge support 3. A support spring seat 5 is clamped in each slot 31. One end of each support spring seat 5 is connected to the moving contact bridge assembly 6, and the other end abuts against the contact bridge compression spring 7. The other end of each contact bridge compression spring 7 abuts against the lower end opening of the contact bridge pull rod 4. Limiting blocks 41 extending towards the support spring seat 5 are arranged on both sides of the inner wall of each contact bridge pull rod 4. The limiting blocks 41 form a limit for the support spring seat 5 and an auxiliary support for the contact bridge compression spring 7 in the contact bridge pull rod 4. The contact bridge compression spring 7 is simplified and described in a cylindrical shape.
[0021] As Figure 4 shown, a boss 42 matching the inner space of the contact bridge compression spring 7 and inserted into the contact bridge compression spring 7 is formed at the lower end opening of each contact bridge pull rod 4.
[0022] As Figure 5 shown, each moving contact bridge assembly 6 includes a moving contact bridge 61, a contact bridge plate 62 arranged on the moving contact bridge 61, and a contact bridge plate spring 63 arranged on the contact bridge plate 62. The moving contact bridge 61 includes two moving contact points 611 and a conductive plate 612 integrally formed with the two moving contact points 611. The two moving contact points 611 are respectively located on the left and right sides of the bottom surface of the conductive plate 22. The contact bridge plate 62 is installed on the conductive plate 612. The contact bridge plate 62 has an outer cover type structure and covers the conductive plate 612. A bent portion 621 extending downward is formed at the peripheral edge of the contact bridge plate 62. The bent portion 621 extends out from the edge of the contact bridge plate 62 and covers the upper parts of the left and right regions of the conductive plate 612, and at the same time closely adheres to the upper surface and its adjacent side edges of the conductive plate 621.
[0023] As Figure 6 shown, two contact point welding surfaces 622 are arranged on the inner surface of the contact bridge plate 62. The positions of the two contact point welding surfaces 622 correspond to the positions of the two moving contact points 611 on the bottom surface of the conductive plate 612. The contact point welding surfaces 622 are located inside the bent portion 621 and are in contact with and electrically connected to the conductive plate 612.
[0024] As Figure 4 and Figure 7As shown, two grooves 623 corresponding to the positions of the two contact welding surfaces 622 are formed on the upper surface of the contact bridge plate 62. Each groove 623 is used to position and connect one end of the contact bridge plate spring 63. The contact bridge plate spring 63 is in an M-shaped structure. The contact bridge plate spring 63 has a central depression 631 and peak portions 632 extending from the central depression 631 to both sides. The peak portions 632 are bent downward to form connecting arms 633. The ends of the connecting arms 633 extend horizontally outward to form contact segments 634 that fit against the upper surfaces of the edges of the grooves 623. A positioning post 43 that cooperates with the central depression 631 of the contact bridge plate spring 63 is further formed on the back of the top of the contact bridge pull rod 4.
[0025] It should be noted that only one set of sub-components is detailedly marked in the figure, but the whole structure includes three identical combined structures.
[0026] Certainly, in addition to the above embodiments, the present utility model can also have various other embodiments. Without departing from the substantial technical solution content of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. And if these changes or deformations are equivalent to the technical solutions in this patent, then these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.
Claims
1. A novel structure of the contact rod of a contactor, comprising a housing and a contact bridge assembly arranged inside the housing. The contact bridge assembly includes a contact bridge support, a contact bridge rod, a support spring seat, a moving contact bridge assembly, and a contact bridge compression spring, characterized in that: The contact bridge pull rod is movably arranged inside the contact bridge support. A transversely penetrating clamping groove is formed in the contact bridge support. A support spring seat is clamped in the clamping groove. One end of the support spring seat is connected to the moving contact bridge assembly, and the other end abuts against the contact bridge compression spring. The other end of the contact bridge compression spring abuts against the lower end opening of the contact bridge pull rod. Transition structures extending towards the support spring seat are arranged on both sides of the inner wall of the contact bridge pull rod. The transition structures form the limitation of the support spring seat and the auxiliary support for the contact bridge compression spring inside the contact bridge pull rod.
2. The novel structure of the contact rod of the contactor according to claim 1, characterized in that: A boss that matches the internal space of the contact bridge compression spring and penetrates inside the contact bridge compression spring is formed at the lower end opening of the contact bridge pull rod.
3. The novel structure of the contact rod of the contactor according to claim 1, wherein: The transition structure is a limiting block.
4. The novel structure of the contact rod of the contactor according to claim 1, characterized in that: The moving contact bridge assembly includes a moving contact bridge, a contact bridge plate arranged on the moving contact bridge, and a contact bridge plate spring arranged on the contact bridge plate. The moving contact bridge includes a moving contact point and a conductive plate integrally formed with the moving contact point. The contact bridge plate is mounted on the conductive plate. The contact bridge plate is of an outer cover type structure and covers the conductive plate.
5. The novel structure of the contact rod of the contactor according to claim 4, characterized in that: A bent portion that extends downward and bends is formed at the peripheral edge of the contact bridge plate. The bent portion covers the front end and both side regions of the conductive plate.
6. The novel structure of the contact rod of the contactor according to claim 5, characterized in that: A contact point welding surface is arranged on the inner surface of the contact bridge plate. The contact point welding surface is located inside the bent portion and is in contact with and electrically connected to the conductive plate.
7. The novel structure of the contact rod of the contactor according to claim 6, characterized in that: A groove corresponding to the position of the contact point welding surface is formed on the upper surface of the contact bridge plate. The groove is used to position and connect one end of the contact bridge plate spring. The contact bridge plate spring is of an M-shaped structure. The contact bridge plate spring has a central low-lying portion and high peak portions extending from the central low-lying portion to both sides. The high peak portions are bent downward to form connecting arms. The ends of the connecting arms extend horizontally outwards to form contact segments that fit against the upper surface of the edge of the groove. A positioning post that cooperates with the central low-lying portion of the contact bridge plate spring is further formed on the back of the top of the contact bridge pull rod.