Release

Abstract

The utility model discloses a release, which belongs to the technical field of electrical, and comprises a shell, an upper cover and an ejector pin, an electromagnetic assembly is arranged in the shell, a through hole is formed in the upper end of the upper cover, a middle sleeve is fixedly mounted on the upper surface of the upper cover and above the through hole, and the outer surface of the middle sleeve is sleeved with an outer sleeve; a positioning frame is fixedly installed on the upper surface, located on one side of the middle sleeve, of the upper cover, a rotating rod is rotationally connected into the positioning frame, and a contact is fixedly connected to the position, located on the inner side of the positioning frame, of the outer surface of the rotating rod in a sleeving mode; tension is applied to the extension plate and the connecting plate through the contraction spring to make the extension plate and the connecting plate close to each other, the extension plate drives the reset plate to move upwards, the inner bottom wall of the adjusting groove abuts against the bottom of the limiting rod, the reset plate applies upward supporting force to the contact through the connecting plate and the connecting rod, and the contact rotates to the original position. Therefore, automatic resetting of the contact can be realized without manual resetting, so that the release is more convenient to use.

Description

Technical Field

[0001] The present application relates to the field of electrical technology, and in particular to a release. Background Art

[0002] The release is mechanically connected to the circuit breaker and is a device used to release the holding mechanism and automatically disconnect the circuit breaker. The release usually includes a reaction spring, a pin, an electromagnetic component and a release contact linked to the circuit breaker. The main working principle of the release is that when it is not working, the suction force between the pin and the magnet is balanced with the elastic force accumulated in the reaction spring. If the release is energized and the pin receives the magnetic field force, the combined force of the magnetic field force and the reaction spring is greater than the suction force of the magnet, and the pin pushes the release contact to cut off the circuit.

[0003] A patent document with the publication number CN203826314U provides a release. This published patent document prevents radial shaking of the outer sleeve and the middle sleeve due to vibration by cooperating with a card strip and a card slot, realizes radial positioning of the outer sleeve and the middle sleeve, thereby reducing the probability of misoperation of the release. Moreover, when the push rod pushes the contact, the outer sleeve and the middle sleeve will not rotate relative to each other, preventing the push rod from tilting, thereby ensuring the smooth operation of the release. No reset device is provided in the above-mentioned published patent document, and the release contacts cannot be automatically reset when they are pushed open by the push rod, which brings inconvenience to the use of the release. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present application provides a release device, which overcomes the deficiencies of the prior art and aims to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a release device, comprising a shell, an upper cover and an ejector pin, an electromagnetic component is arranged inside the shell, a through-hole is opened at the upper end of the upper cover, a middle sleeve is fixedly installed on the upper surface of the upper cover above the through-hole, an outer sleeve is sleeved on the outer surface of the middle sleeve, a positioning frame is fixedly installed on the upper surface of the upper cover located on one side of the middle sleeve, a rotating rod is rotatably connected inside the positioning frame, a contact is fixedly sleeved on the outer surface of the rotating rod located on the inner side of the positioning frame, the bottom of the contact abuts against the top of the ejector pin, the outer surface of the rotating rod is located on both sides of the positioning frame and symmetrically fixedly sleeved with connecting plates, a connecting rod is fixedly installed between the two connecting plates, a mounting frame is fixedly installed on one side of the shell, a limit rod is fixedly installed on the inner side of the mounting frame, a reset plate is slidably sleeved on the outer surface of the limit rod, an adjustment groove is opened inside the reset plate near the bottom, an extension plate is fixedly connected to the reset plate on the side close to the shell, and the extension plate is fixedly connected to the connecting plate through a contraction spring.

[0006] By adopting the above technical solution, the ejector pin receives the magnetic field force to push the contact open and cuts off the circuit. When the contact is pushed open, it rotates with the rotating rod, and the force is transmitted through the connecting plate and the connecting rod. When the contact is pushed open, downward pressure is applied to the reset plate, so that the inner top wall of the adjusting groove abuts against the top of the limit rod to achieve force balance. Similarly, when the magnetic field force on the ejector pin disappears, it will return to the inside of the shell, and the elastic force of the contraction spring will apply a pulling force to the extension plate and the connecting plate to make them move closer to each other. The reset plate is moved upward with the extension plate, so that the inner bottom wall of the adjusting groove abuts against the bottom of the limit rod. The reset plate applies an upward supporting force to the contact through the connecting plate and the connecting rod, so that the contact rotates to its original position, that is, the contact can be automatically reset without manual reset, making the releaser more convenient to use.

[0007] As a preferred technical solution of the present application, a notch is provided at the top of the reset plate, the top of the notch fits with the bottom of the connecting rod, the inner diameter of the notch matches with the outer diameter of the connecting rod, and the adjustment groove matches with the limit rod.

[0008] By adopting the above technical solution, the reset plate and the connecting rod are easily connected.

[0009] As a preferred technical solution of the present application, the number of the connecting plates, the extension plates and the contraction springs are all set to two, and the two connecting plates, the extension plates and the contraction springs are symmetrically distributed about the contacts.

[0010] By adopting the above technical solution, the two contraction springs can distribute the force more evenly when bearing load, have better elastic stability, more uniform wear between the spring pieces, and longer service life.

[0011] As a preferred technical solution of the present application, positioning blocks are symmetrically installed on both sides of the upper surface of the shell, and positioning grooves are symmetrically opened on the bottom of the upper cover, and the positioning grooves are adapted to the positioning blocks.

[0012] By adopting the above technical solution, the upper cover can be positioned through the cooperation between the positioning groove and the positioning block, so that the upper cover can be conveniently installed on the housing.

[0013] As a preferred technical solution of the present application, a hollow groove is opened inside the middle sleeve, a force spring is fixedly connected to the inner bottom wall of the hollow groove, and the other end of the force spring is fixedly connected to the inner top wall of the outer sleeve.

[0014] By adopting the above technical solution, a fixed connection between the middle sleeve and the outer sleeve is achieved through the force spring.

[0015] As a preferred technical solution of the present application, the outer surface of the middle sleeve is symmetrically provided with clamping strips on both sides, the outer surface of the outer sleeve is symmetrically provided with clamping blocks on both sides, the inside of the clamping blocks is provided with clamping slots, and the clamping strips are adapted to the clamping slots.

[0016] By adopting the above technical solution, the card strip and the card slot cooperate with each other to prevent the outer sleeve and the middle sleeve from radial shaking due to vibration, and realize radial positioning of the outer sleeve and the middle sleeve, thereby reducing the probability of misoperation of the releaser. Moreover, when the ejector pin pushes the contact, the outer sleeve and the middle sleeve will not rotate relative to each other, preventing the ejector pin from tilting, thereby ensuring the smooth operation of the releaser.

[0017] As a preferred technical solution of the present application, the centers of the through-hole, the ejector pin, the middle sleeve and the outer sleeve are on the same vertical line.

[0018] By adopting the technical solution, it is convenient for the ejector pin to pass through the through-hole, the middle sleeve and the outer sleeve.

[0019] Beneficial effects of this application:

[0020] In the utility model, the ejector pin receives the magnetic field force to push the contact open and cuts off the circuit. When the contact is pushed open, it rotates with the rotating rod, and the force is transmitted through the connecting plate and the connecting rod. When the contact is pushed open, downward pressure is applied to the reset plate, so that the inner top wall of the adjusting groove abuts against the top of the limit rod, thereby achieving force balance. Similarly, when the magnetic field force on the ejector pin disappears, it will return to the inside of the shell, and the elastic force of the contraction spring will apply a pulling force to the extension plate and the connecting plate to make them move closer to each other. The reset plate is moved upward with the extension plate, so that the inner bottom wall of the adjusting groove abuts against the bottom of the limit rod. The reset plate applies an upward supporting force to the contact through the connecting plate and the connecting rod, so that the contact rotates to its original position, that is, the contact can be automatically reset without manual reset, making the releaser more convenient to use.

[0021] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope thereby. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of this application;

[0023] Figure 2 This is an exploded diagram of the present application;

[0024] Figure 3 It is a schematic diagram of the local structure of this application;

[0025] Figure 4 This is a schematic diagram of the partial structure breakdown of this application.

[0026] In the figure: 1. shell; 2. upper cover; 3. through-hole; 4. middle sleeve; 5. outer sleeve; 6. ejector pin; 7. positioning frame; 8. rotating rod; 9. contact; 10. connecting plate; 11. connecting rod; 12. reset plate; 13. notch; 14. adjustment slot; 15. contraction spring; 16. extension plate; 17. mounting frame; 18. limit rod; 19. positioning slot; 20. positioning block; 21. clamping strip; 22. clamping block; 23. clamping slot; 24. force spring. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] Reference Figure 1-4A release device comprises a shell 1, an upper cover 2 and an ejector 6. An electromagnetic component is arranged inside the shell 1. A through hole 3 is opened at the upper end of the upper cover 2. A middle sleeve 4 is fixedly installed on the upper surface of the upper cover 2 above the through hole 3. An outer sleeve 5 is sleeved on the outer surface of the middle sleeve 4. A positioning frame 7 is fixedly installed on the upper surface of the upper cover 2 on one side of the middle sleeve 4. A rotating rod 8 is rotatably connected inside the positioning frame 7. The outer surface of the rotating rod 8 is located on the inner side of the positioning frame 7 and is fixedly sleeved with a contact 9. The bottom of the contact 9 abuts against the top of the ejector 6. The outer surface of the rotating rod 8 is located on both sides of the positioning frame 7 and is symmetrically fixedly sleeved with connecting plates 10. A connecting rod 11 is fixedly installed between the two connecting plates 10. A mounting frame 17 is fixedly installed on one side of the shell 1. A limiting rod 18 is fixedly installed on the inner side of the mounting frame 17. A reset plate 12 is slidably sleeved on the outer surface of the limiting rod 18. An adjusting groove 14 is opened inside the reset plate 12 near the bottom. The reset plate 12 is fixedly connected to an extension plate 12 near the side of the shell 1. The extension plate 16 is fixedly connected to the connecting plate 10 through the contraction spring 15. When in use, the ejector pin 6 receives the magnetic field force to push the contact 9 open and cut off the circuit. When the contact 9 is pushed open, it rotates with the rotating rod 8, and the force is transmitted through the connecting plate 10 and the connecting rod 11. When the contact 9 is pushed open, it will exert downward pressure on the reset plate 12, so that the inner top wall of the adjustment groove 14 abuts against the top of the limit rod 18 to achieve force balance. Similarly, when the magnetic field force on the ejector pin 6 disappears, it will return to When the breaker is in the interior of the housing 1, the elastic force of the contraction spring 15 applies a pulling force to the extension plate 16 and the connecting plate 10 to bring them closer to each other. The extension plate 16 moves the reset plate 12 upward, so that the inner bottom wall of the adjustment slot 14 abuts against the bottom of the limit rod 18. The reset plate 12 applies an upward supporting force to the contact 9 through the connecting plate 10 and the connecting rod 11, so that the contact 9 rotates to its original position, that is, the contact 9 can be automatically reset without manual reset, making the releaser more convenient to use.

[0029] In this embodiment, if Figure 3 and 4 As shown, a notch 13 is provided at the top of the reset plate 12, the top of the notch 13 fits with the bottom of the connecting rod 11, the inner diameter of the notch 13 matches the outer diameter of the connecting rod 11, and the adjustment groove 14 matches the limit rod 18, so that the reset plate 12 and the connecting rod 11 are easily connected when in use.

[0030] In this embodiment, if Figure 3 and 4 As shown, the number of connecting plates 10, extension plates 16 and contraction springs 15 are all set to two, and the two connecting plates 10, extension plates 16 and contraction springs 15 are symmetrically distributed about the contact 9. When in use, the two contraction springs 15 can more evenly distribute the force when bearing loads, have better elastic stability, more uniform wear between the spring pieces, and longer service life.

[0031] In this embodiment, if Figure 2 As shown, positioning blocks 20 are symmetrically installed on both sides of the upper surface of the shell 1, and positioning grooves 19 are symmetrically opened on the bottom of the upper cover 2. The positioning grooves 19 are adapted to the positioning blocks 20. When in use, the positioning grooves 19 and the positioning blocks 20 cooperate with each other to facilitate positioning of the upper cover 2 and to facilitate installation of the upper cover 2 on the shell 1.

[0032] In this embodiment, if Figure 2 As shown, a hollow groove is opened inside the middle sleeve 4, and a force spring 24 is fixedly connected to the inner bottom wall of the hollow groove. The other end of the force spring 24 is fixedly connected to the inner top wall of the outer sleeve 5. When in use, the force spring 24 realizes a fixed connection between the middle sleeve 4 and the outer sleeve 5.

[0033] In this embodiment, if Figure 2 As shown, clamping strips 21 are symmetrically installed on both sides of the outer surface of the middle sleeve 4, and clamping blocks 22 are symmetrically installed on both sides of the outer surface of the outer sleeve 5. A clamping groove 23 is provided inside the clamping block 22, and the clamping strip 21 is adapted to the clamping groove 23. During use, the clamping strip 21 cooperates with the clamping groove 23 to prevent radial shaking of the outer sleeve 5 and the middle sleeve 4 due to vibration, thereby realizing radial positioning of the outer sleeve 5 and the middle sleeve 4, thereby reducing the probability of misoperation of the releaser, and when the ejector pin 6 pushes the contact 9, the outer sleeve 5 and the middle sleeve 4 will not rotate relative to each other, thereby preventing the ejector pin 6 from tilting, thereby ensuring the smooth operation of the releaser.

[0034] In this embodiment, if Figure 2 As shown, the centers of the through hole 3, the ejector pin 6, the middle sleeve 4 and the outer sleeve 5 are on the same vertical line, so that the ejector pin 6 can pass through the through hole 3, the middle sleeve 4 and the outer sleeve 5 conveniently during use.

[0035] Working principle: when using a release of the present application, the ejector pin 6 receives the magnetic field force to push the contact 9 open and cuts off the circuit. When the contact 9 is pushed open, it rotates with the rotating rod 8, and the force is transmitted through the connecting plate 10 and the connecting rod 11. When the contact 9 is pushed open, it will exert downward pressure on the reset plate 12, so that the inner top wall of the adjusting groove 14 abuts against the top of the limiting rod 18 to achieve force balance. Similarly, when the magnetic field force on the ejector pin 6 disappears, it will return to the inside of the shell 1, and the elastic force of the contraction spring 15 will apply a pulling force to the extension plate 16 and the connecting plate 10 to make them close to each other. The reset plate 12 moves upward with the extension plate 16, so that the inner bottom wall of the adjusting groove 14 abuts against the bottom of the limiting rod 18, and the reset plate 12 exerts an upward supporting force on the contact 9 through the connecting plate 10 and the connecting rod 11, so that the contact 9 rotates to its original position, that is, the contact 9 can be automatically reset without manual reset, making the release more convenient to use.

[0036] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A trip device, comprising a housing (1), an upper cover (2) and a ejector pin (6), characterized in that: An electromagnetic component is arranged inside the housing (1); a through opening (3) is provided at the upper end of the upper cover (2); a middle sleeve (4) is fixedly installed on the upper surface of the upper cover (2) above the through opening (3); an outer sleeve (5) is sleeved on the outer surface of the middle sleeve (4); a positioning frame (7) is fixedly installed on the upper surface of the upper cover (2) on one side of the middle sleeve (4); a rotating rod (8) is rotatably connected inside the positioning frame (7); a contact (9) is fixedly sleeved on the outer surface of the rotating rod (8) on the inner side of the positioning frame (7); the bottom of the contact (9) abuts against the top of the ejector pin (6); the outer surface of the rotating rod (8) is located at the inner side of the positioning frame (7); Connecting plates (10) are symmetrically fixedly sleeved on both sides of the positioning frame (7), a connecting rod (11) is fixedly installed between the two connecting plates (10), a mounting frame (17) is fixedly installed on one side of the housing (1), a limiting rod (18) is fixedly installed on the inner side of the mounting frame (17), a reset plate (12) is slidably sleeved on the outer surface of the limiting rod (18), an adjusting groove (14) is provided inside the reset plate (12) near the bottom, an extension plate (16) is fixedly connected to the side of the reset plate (12) close to the housing (1), and the extension plate (16) is fixedly connected to the connecting plate (10) via a contraction spring (15).

2. A release according to claim 1, characterized in that: A notch (13) is provided at the top of the reset plate (12), the top of the notch (13) fits with the bottom of the connecting rod (11), the inner diameter of the notch (13) matches with the outer diameter of the connecting rod (11), and the adjustment groove (14) matches with the limiting rod (18).

3. A release according to claim 1, characterized in that: The number of the connecting plates (10), the extension plates (16) and the contraction springs (15) is two, and the two connecting plates (10), the extension plates (16) and the contraction springs (15) are symmetrically distributed with respect to the contacts (9).

4. A release according to claim 1, characterized in that: Positioning blocks (20) are symmetrically mounted on both sides of the upper surface of the housing (1), and positioning grooves (19) are symmetrically opened on the bottom of the upper cover (2), wherein the positioning grooves (19) are adapted to fit the positioning blocks (20).

5. A release according to claim 1, characterized in that: The middle sleeve (4) is provided with an empty slot inside, the inner bottom wall of the empty slot is fixedly connected to a force-bearing spring (24), and the other end of the force-bearing spring (24) is fixedly connected to the inner top wall of the outer sleeve (5).

6. A release according to claim 1, characterized in that: The outer surface of the middle sleeve (4) is symmetrically provided with clamping strips (21), and the outer surface of the outer sleeve (5) is symmetrically provided with clamping blocks (22). A clamping slot (23) is provided inside the clamping block (22), and the clamping strip (21) is adapted to fit the clamping slot (23).

7. A release according to claim 1, characterized in that: The centers of the through opening (3), the ejector pin (6), the middle sleeve (4) and the outer sleeve (5) are located on the same vertical line.

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