Anti-offset fixed contact fixing structure

Abstract

The utility model relates to an anti-offset fixed contact fixing structure, which belongs to the technical field of fixed contact bodies and comprises a contact cavity and a limit contact block, and the limit contact block is positioned in an inner cavity of the contact cavity. The limiting contact block is fixedly connected with a static contact body, and the contact cavity is provided with a fixing assembly. The fixing assembly comprises a fixing plate, a torsional spring is fixedly connected to the fixing plate, a rotating rod is rotationally connected to the fixing plate, and a bent plate is fixedly connected to the outer wall of the rotating rod. By arranging the fixing assembly, the fixed contact body is fixed, so that the situation that the tightening torque is not uniform when the fixed contact body is installed is avoided, and the situation that the fixed contact body cannot be stably fixed to the contact cavity, the torque of part of the area is too small, a gap exists between the fixed contact body and the contact cavity or the fixed contact body is loosened is avoided. When the contactor works, the static contact body is easy to displace and even come off, which affects the normal connection of a circuit and the performance of the contactor.

Description

Technical Field

[0001] This utility model relates to the technical field of stationary contact body, and specifically to a stationary contact fixing structure for preventing displacement. Background Technology

[0002] In the field of electrical equipment, the reliability of the contactor, as a switching device that frequently connects and disconnects circuits, is crucial to the stable operation of the entire power system. The stationary contact, as one of the key components of the contactor, is directly affected by the way it is fixed, which affects the working effect and service life of the contactor.

[0003] According to the public announcement (CN221057328U), a high-power DC contactor stationary contact fixing structure is disclosed. This technology discloses "a contact cavity and a stationary contact, with a stationary contact mounting hole on the surface of the contact cavity, an external thread on the outer surface of the stationary contact, and a locking nut connected to the outer surface of the stationary contact via the external thread. The lower surface of the locking nut abuts against the upper surface of the contact cavity; the lower end of the stationary contact passes through the stationary contact mounting hole and is fixedly installed with a limiting contact block, which abuts against the upper surface of the inner cavity of the contact cavity." This technical solution has the effect of limiting and fixing the stationary contact through the combined action of the locking nut and the limiting contact block, thereby fastening the stationary contact to the contact cavity. It is easy to install, reliable in fixing, and can effectively prevent the stationary contact from coming out of the contact cavity.

[0004] However, in the aforementioned comparative documents, during installation, the limiting contact block is pressed against the inner wall of the cavity by rotating the locking nut, and the nut is tightened to press against the outer surface of the cavity, thus limiting and fixing the stationary contact to prevent it from falling out. However, in actual use, uneven tightening force may occur. When the tightening torque is uneven, the stationary contact may not be stably fixed to the contact cavity. If the torque is too small in some areas, there will be gaps or looseness between the stationary contact and the contact cavity. When the contactor is working, the stationary contact is prone to displacement or even falling out, affecting the normal connection of the circuit and the performance of the contactor. On the other hand, if the torque is too large in some areas, it may cause excessive local stress on the stationary contact or the contact cavity, resulting in deformation, which also undermines the fixing effect.

[0005] To address the aforementioned issues, this application proposes an anti-displacement static contact fixing structure. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing an anti-displacement static contact fixing structure.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A stationary contact fixing structure for preventing displacement includes a contact cavity and a limiting contact block, wherein the limiting contact block is located in the inner cavity of the contact cavity; a stationary contact body is fixedly connected to the limiting contact block, and a fixing component is provided on the contact cavity; the fixing component includes a fixing plate, a torsion spring is fixedly connected to the fixing plate, a rotating rod is rotatably connected to the fixing plate, a bent plate is fixedly connected to the outer wall of the rotating rod, one end of the torsion spring near the bent plate is fixedly connected to the outer wall of the rotating rod, a curved groove is provided on the limiting contact block, the curved groove of the limiting contact block fits with the outer wall of the bent plate, a through hole is provided on the fixing plate, a push plate is fixedly connected to the outer wall of the rotating rod, and a locking component is provided on the side wall of the fixing plate.

[0008] The locking assembly includes a connecting plate, a circular block fixedly connected to one side of the connecting plate, an insert plate fixedly connected to the end of the circular block away from the connecting plate, and a slot fixedly connected to the end of the rotating rod away from the bent plate. The outer wall of the insert plate fits into the slot of the rotating rod. By setting the locking assembly, the bent plate is fixed. When the bent plate is inserted into the curved groove of the limiting contact block, the circular block and the insert plate can be moved by pressing the connecting plate. The movement of the insert plate will insert it into the slot, thereby fixing the rotating rod and preventing the bent plate from detaching after being inserted into the curved groove, thus avoiding affecting the fixing effect on the stationary contact body.

[0009] The top of the limiting contact block is fixedly connected to an insert block. The outer wall of the insert block fits into the groove opened in the inner cavity of the contact cavity. By setting the insert block, the limiting contact block is initially fixed, thereby avoiding the fixing component from affecting the fixing efficiency of the stationary contact body when fixing the stationary contact body.

[0010] The fixing plate has an opening, and the outer wall of the stationary contact body is provided with a pull plate. By setting the opening and the pull plate, the stationary contact body can be pulled, so as to avoid the fixing component being difficult to fix when fixing the limit contact block and the stationary contact body.

[0011] A pull ring is fixedly connected to the side of the connecting plate away from the circular block. By setting the pull ring, the connecting plate can be quickly pulled, which facilitates the disassembly of the locking component by the staff.

[0012] A magnetic strip is fixedly connected to the outer wall of the fixing plate. The outer wall of the magnetic strip fits into the hole opened in the connecting plate. By setting the magnetic strip, the connecting plate is further fixed.

[0013] A protective plate is rotatably connected to the outer wall of the fixed plate. One side of the protective plate is in contact with the outer wall of the rotating rod. By setting the protective plate, the groove opened in the limit contact block is closed.

[0014] The beneficial effects of this utility model are:

[0015] By setting a fixing component, the stationary contact body is fixed, thus avoiding uneven tightening torque during installation. This prevents the stationary contact body from being unstablely fixed to the contact cavity. Insufficient torque in some areas can cause gaps or loosening between the stationary contact body and the contact cavity. During contactor operation, the stationary contact body is prone to displacement or even detachment, affecting the normal circuit connection and contactor performance.

[0016] By setting up a locking component, the bent plate is fixed. After the bent plate is inserted into the groove of the limit contact block, the circular block and the insert plate can be moved by pressing the connecting plate. The movement of the insert plate will insert it into the slot, thereby fixing the rotating rod and preventing the bent plate from coming off after being inserted into the groove, thus avoiding affecting the fixing effect on the stationary contact body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the overall structure of this utility model;

[0018] Figure 2 This utility model is a schematic diagram illustrating the structure of the stationary contact body and its related parts;

[0019] Figure 3 This is a schematic diagram illustrating the structure of the fixing plate and its related parts in this utility model.

[0020] Figure 4 This utility model is a schematic diagram showing the structure of the connecting plate and its related parts.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Contact cavity; 2. Limiting contact block; 3. Stationary contact body;

[0023] 4. Fixing components; 401. Fixing plate; 402. Torsion spring; 403. Rotating rod; 404. Bend plate; 405. Bend groove; 406. Through hole; 407. Push plate;

[0024] 5. Fastening assembly; 501. Connecting plate; 502. Round block; 503. Insert plate; 504. Slot;

[0025] 6. Insert block; 7. Through port; 8. Pull plate; 9. Pull ring; 10. Magnetic strip; 11. Protective plate. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0029] Reference Figure 1-4A non-displacement stationary contact fixing structure includes a contact cavity 1 and a limiting contact block 2, the limiting contact block 2 being located within the contact cavity 1; a stationary contact body 3 is fixedly connected to the limiting contact block 2, the limiting contact block 2 being used to fix the stationary contact body 3; a fixing assembly 4 is provided on the contact cavity 1; the fixing assembly 4 is used to fix the stationary contact body 3 to the contact cavity 1, the fixing assembly 4 including a fixing plate 401, a torsion spring 402 fixedly connected to the fixing plate 401, the fixing plate 401 being used to fix the torsion spring 402; a rotating rod 403 is rotatably connected to the fixing plate 401, the fixing plate 401 being used to fix the rotating rod 403; the torsion spring 402 is used to return the rotating rod 403 to its original position after rotation. A bent plate 404 is fixedly connected to the outer wall of the rod 403. The rotating rod 403 is used to drive the bent plate 404 to flip. The end of the torsion spring 402 near the bent plate 404 is fixedly connected to the outer wall of the rotating rod 403. A curved groove 405 is opened on the limiting contact block 2. The bent plate 404 is snapped into the inside of the curved groove 405. The stationary contact body 3 is fixed by the limiting contact block 2 and the fixing plate 401. The curved groove 405 of the limiting contact block 2 fits against the outer wall of the bent plate 404. A through hole 406 is opened on the fixing plate 401. A push plate 407 is fixedly connected to the outer wall of the rotating rod 403. The push plate 407 can easily flip the bent plate 404, thereby facilitating the bending plate 404 to disengage from the curved groove 405. A locking component 5 is provided on the side wall of the fixing plate 401.

[0030] Reference Figure 3 and Figure 4 The locking assembly 5 includes a connecting plate 501. A circular block 502 is fixedly connected to one side of the connecting plate 501. Two circular blocks 502 are provided, and the two circular blocks 502 are located on both sides of the connecting plate 501. An insert plate 503 is fixedly connected to the end of the circular block 502 away from the connecting plate 501. The movement of the circular block 502 can drive the insert plate 503 to move. A slot 504 is fixedly connected to the end of the rotating rod 403 away from the bent plate 404. The outer wall of the insert plate 503 fits into the slot 504 opened in the rotating rod 403. The cooperation of the insert plate 503 and the slot 504 can fix the rotating rod 403. After the bent plate 404 is inserted into the inside of the bent groove 405, it will disengage, thereby avoiding affecting the fixing effect on the stationary contact body 3.

[0031] Reference Figure 2 The top of the limiting contact block 2 is fixedly connected to the insert block 6. The outer wall of the insert block 6 fits into the groove opened in the inner cavity of the contact cavity 1. The insert block 6 is used to achieve the initial fixation of the limiting contact block 2, thereby avoiding the fixing component 4 from affecting the fixing efficiency of the stationary contact body 3 when fixing the stationary contact body 3.

[0032] Reference Figure 2 and Figure 3The fixing plate 401 has an opening 7, and the outer wall of the stationary contact body 3 is provided with a pull plate 8. The cooperation of the opening 7 and the pull plate 8 can realize the pulling of the stationary contact body 3, so as to avoid the fixing component 4 from being difficult to fix when fixing the limit contact block 2 and the stationary contact body 3.

[0033] Reference Figure 2 and Figure 4 A pull ring 9 is fixedly connected to the side of the connecting plate 501 away from the round block 502. The pull ring 9 is used to quickly pull the connecting plate 501, so as to facilitate the disassembly of the fastening component 5 by the staff.

[0034] Reference Figure 2-4 A magnetic strip 10 is fixedly connected to the outer wall of the fixing plate 401. The outer wall of the magnetic strip 10 fits into the hole opened in the connecting plate 501. The magnetic strip 10 is used to further fix the connecting plate 501, thereby avoiding the connection plate 501 from detaching when it is attached to the fixing plate 401, and thus avoiding affecting the fixing of the insert plate 503 to the rotating rod 403.

[0035] Reference Figure 2 and Figure 3 A protective plate 11 is rotatably connected to the outer wall of the fixed plate 401. One side of the protective plate 11 is in contact with the outer wall of the rotating rod 403. The protective plate 11 is used to close the groove 405 opened in the limit contact block 2 to prevent the groove 405 opened in the limit contact block 2 from being affected by external factors, thereby avoiding affecting the use of the limit contact block 2 and the stationary contact body 3.

[0036] Working principle:

[0037] This anti-displacement stationary contact fixing structure, when it is necessary to fix the stationary contact body 3, the worker passes the stationary contact body 3 through the hole opened in the contact cavity 1. At this time, one side of the limiting contact block 2 will fit against the inner cavity of the contact cavity 1. Then, the bent plate 404 can be inserted into the bent groove 405 opened in the limiting contact block 2 through the fixing plate 401. At this time, the bent plate 404 will be flipped under the action of the torsion spring 402 and the rotating rod 403, thereby making the bent plate 404 rotate. Plate 404 engages with groove 405 to fix the stationary contact body 3. After the stationary contact body 3 is fixed, pressing the connecting plate 501 will move the round block 502 and the insert plate 503. The movement of the insert plate 503 will insert it into the slot 504, thereby fixing the rotating rod 403. This prevents the bent plate 404 from coming loose after being inserted into the groove 405, thus avoiding affecting the fixing effect of the stationary contact body 3.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A non-displacement stationary contact fixing structure, comprising a contact cavity (1) and a limiting contact block (2), characterized in that, The limiting contact block (2) is located in the inner cavity of the contact cavity (1); a stationary contact body (3) is fixedly connected to the limiting contact block (2), and a fixing component (4) is provided on the contact cavity (1). The fixing component (4) includes a fixing plate (401), a torsion spring (402) fixedly connected to the fixing plate (401), a rotating rod (403) rotatably connected to the fixing plate (401), a bent plate (404) fixedly connected to the outer wall of the rotating rod (403), one end of the torsion spring (402) near the bent plate (404) fixedly connected to the outer wall of the rotating rod (403), a curved groove (405) is provided on the limiting contact block (2), the curved groove (405) of the limiting contact block (2) fits against the outer wall of the bent plate (404), a through hole (406) is provided on the fixing plate (401), a push plate (407) is fixedly connected to the outer wall of the rotating rod (403), and a locking component (5) is provided on the side wall of the fixing plate (401).

2. The anti-displacement stationary contact fixing structure according to claim 1, characterized in that, The locking assembly (5) includes a connecting plate (501), a round block (502) is fixedly connected to one side of the connecting plate (501), an insert plate (503) is fixedly connected to one end of the round block (502) away from the connecting plate (501), a slot (504) is fixedly connected to one end of the rotating rod (403) away from the bent plate (404), and the outer wall of the insert plate (503) fits into the slot (504) opened in the rotating rod (403).

3. The anti-displacement stationary contact fixing structure according to claim 1, characterized in that, The top of the limiting contact block (2) is fixedly connected to the insert block (6), and the outer wall of the insert block (6) fits into the groove opened in the inner cavity of the contact cavity (1).

4. The anti-displacement stationary contact fixing structure according to claim 1, characterized in that, The fixed plate (401) has an opening (7), and the outer wall of the stationary contact body (3) is provided with a pull plate (8).

5. The anti-displacement stationary contact fixing structure according to claim 2, characterized in that, A pull ring (9) is fixedly connected to the side of the connecting plate (501) away from the round block (502).

6. The anti-displacement stationary contact fixing structure according to claim 1, characterized in that, A magnetic strip (10) is fixedly connected to the outer wall of the fixing plate (401), and the outer wall of the magnetic strip (10) fits into the hole opened in the connecting plate (501).

7. The anti-displacement stationary contact fixing structure according to claim 1, characterized in that, The outer wall of the fixed plate (401) is rotatably connected to a protective plate (11), one side of which is in contact with the outer wall of the rotating rod (403).

Images