Electromagnetic release device

Abstract

The utility model discloses an electromagnetic release device which comprises a coil, an elastic element, a shell, a magnetic spring bolt and a release hook. A watertight containing space and a movable cavity of the shell are isolated from each other, the containing space surrounds the periphery of the movable cavity, the coil is arranged in the containing space of the shell and surrounds the movable cavity, and the top of a spring bolt rod of the magnetic spring bolt is arranged in the movable cavity of the shell in a vertically movable mode and can be driven when the coil is powered on. The spring bolt rod is sleeved with the elastic element, the two opposite ends of the elastic element abut against the locking and blocking part of the magnetic spring bolt and the shell respectively, a release hook body of the release hook is arranged at the bottom of the shell and provided with a lock groove with a side opening, the rotating end of the movable hook is rotatably installed on the release hook body, and the lock hook end can be locked or released by the locking and blocking part. When the locking and blocking part releases the locking hook end of the movable hook, the movable hook opens the side opening of the locking groove of the releasing hook body, and when the locking and blocking part locks the locking hook end of the movable hook, the movable hook closes the side opening of the locking groove of the releasing hook body.

Description

Technical Field

[0001] The utility model relates to a release device, in particular to an electromagnetic release device. Background Art

[0002] With the development and utilization of the ocean, the number of seabed environmental monitoring instruments and engineering application instruments put into the seabed by people is gradually increasing. The release device is crucial for putting marine detection equipment into the ocean. The release device is mainly used for the release of underwater equipment. By transmitting acoustic wave remote control release instructions on the water surface or on the shore, the response release device receives the command for verification. After the verification is correct, the release mechanism is activated, so that the gravity anchor hook is disengaged. The response release device and the equipment float to the water surface under the action of buoyancy, and then are recovered.

[0003] At present, the release device usually adopts a mechanical release scheme, that is, the motor in the sealed cabin drives the transmission structure outside the cabin to realize the opening and closing release action of the gravity anchor hook of the release device. When the transmission mechanism in the release device passes through the sealed cabin, dynamic sealing treatment is required. The sealing requirement is very high under deep water and high pressure. Once seawater enters the sealed cabin, the metal in the sealed cabin will be corroded by seawater, greatly shortening the service life of the mechanical release device. Moreover, the mechanical transmission structure requires a large number of transmission parts, and the structure is relatively complex. The mechanical movement structure is easily affected by external impacts such as vibration, which not only affects the precision of the sealed cabin, but also reduces the cooperation degree between various mechanical components. Summary of the Utility Model

[0004] An object of the utility model is to provide an electromagnetic release device, wherein a coil of the electromagnetic release device is arranged in a watertight accommodation space of a housing. When the coil is electrified, the coil and a magnetic tongue located outside the housing interact to drive the magnetic tongue to generate displacement to release a locking hook end of a movable hook of a release hook. In this way, when used in a deep water environment, the electromagnetic release device can prevent seawater from entering the accommodation space of the housing to avoid short circuit, thereby ensuring the reliability of the electromagnetic release device.

[0005] An object of the present utility model is to provide an electromagnetic release device, wherein the controller and the power supply of the electromagnetic release device are both arranged in the accommodation space of the housing. The controller receives a water surface signal, and the power supply can supply power to the coil to generate an electromagnetic field in the coil. The electromagnetic field generated by the coil interacts with the magnetic locking tongue to pull the magnetic locking tongue located outside the housing upward, so as to release the movable hook locked by the magnetic locking tongue, thereby disengaging the cable of devices such as marine detection instruments suspended in the release hook from the release hook, and then completing the release operation. The controller, the power supply, and the coil are sealed in the accommodation space of the housing, and the housing can prevent seawater from entering the accommodation space, thereby extending the service life of the electromagnetic release device.

[0006] According to an aspect of the present utility model, the present utility model provides an electromagnetic release device, which comprises:

[0007] A coil;

[0008] An elastic element;

[0009] A housing, wherein the housing has a watertight accommodation space and an activity cavity with an open bottom. The accommodation space and the activity cavity are isolated from each other, and the accommodation space surrounds the activity cavity on all sides. The coil is arranged in the accommodation space of the housing, and the coil surrounds the activity cavity of the housing;

[0010] A magnetic locking tongue, wherein the magnetic locking tongue comprises a locking tongue rod and a locking portion arranged at the bottom end of the locking tongue rod. The top end of the locking tongue rod is movably arranged up and down in the activity cavity of the housing. The elastic element is sleeved on the locking tongue rod, and one end of the elastic element abuts against the locking portion, and the other end abuts against the bottom of the housing. When the coil is energized, the electromagnetic field generated by the coil interacts with the locking tongue rod to drive the locking tongue rod to move upward in the activity cavity of the housing and compress the elastic element during this process;

[0011] A release hook, wherein the release hook comprises a release hook body and a movable hook. The release hook body is arranged at the bottom of the housing, and the release hook body has a locking groove with a side opening. The movable hook has a relative rotating end and a locking hook end. The rotating end of the movable hook is rotatably installed on the release hook body. The locking portion of the magnetic locking tongue is arranged to be able to lock or release the locking hook end of the movable hook. When the locking portion locks the locking hook end of the movable hook, the movable hook closes the side opening of the locking groove of the release hook body. When the locking portion releases the locking hook end of the movable hook, the movable hook opens the side opening of the locking groove of the release hook body.

[0012] According to an embodiment of the present utility model, the locking hook end of the movable hook has a step and a groove located outside the step, and the locking portion of the magnetic locking tongue has a blocking arm extending downward, wherein the blocking arm of the locking portion can extend into the groove of the locking hook end of the movable hook, so that the blocking arm of the locking portion blocks the step outside the step of the locking hook end of the movable hook, thereby the locking portion locks the locking hook end of the movable hook.

[0013] According to an embodiment of the present utility model, the release hook body has a first extension arm and a second extension arm, the first extension arm and the second extension arm extend at intervals from each other to form the locking groove between the first extension arm and the second extension arm, wherein the rotating end of the movable hook is rotatably mounted on the first extension arm, and when the blocking arm of the locking portion extends into the groove of the locking hook end of the movable hook, the second extension arm of the release hook body extends into the groove of the locking hook end of the movable hook.

[0014] According to an embodiment of the present utility model, the second extension arm of the release hook body has a positioning groove, and the end of the locking hook end of the movable hook can be positioned in the positioning groove of the second extension arm of the release hook body.

[0015] According to an embodiment of the present utility model, the release hook body has a guiding groove with a non-circular cross-section, the cross-sectional shape and size of the locking portion match the shape and size of the guiding groove of the release hook body, and the locking portion is arranged to move up and down in the guiding groove of the release hook body.

[0016] According to an embodiment of the present utility model, the cross-sectional shape of the guiding groove of the release hook body is rectangular, the cross-sectional shape of the locking portion is rectangular, and the cross-sectional size of the locking portion is slightly smaller than the size of the guiding groove of the release hook body.

[0017] According to an embodiment of the present utility model, the release hook further includes a limiting post, the limiting post is arranged on the release hook body and located in the guiding groove to block the locking portion to limit the maximum distance of the downward movement of the magnetic locking tongue.

[0018] According to an embodiment of the present utility model, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are installed with each other, the accommodating space of the housing is formed between the upper housing and the lower housing, the movable cavity is formed in the lower housing, wherein the release hook body is arranged in the lower housing.

[0019] According to an embodiment of the present utility model, the lower housing includes an extension portion and a packaging portion. The extension portion extends upward from the middle of the packaging portion to the inside of the upper housing, and the extension portion forms the movable cavity. The packaging portion is used to close the bottom opening of the upper housing, so as to form the accommodation space between the upper housing and the lower housing, and the accommodation space surrounds the periphery of the movable cavity, wherein the coil is sleeved on the extension portion of the lower housing.

[0020] According to an embodiment of the present utility model, the electromagnetic release device further includes a controller and a power supply. The controller and the power supply are both arranged in the accommodation space of the housing, and the power supply and the coil are respectively connected to the controller. Description of the Drawings

[0021] Figure 1 is a three-dimensional schematic diagram of a state of an electromagnetic release device according to a preferred embodiment of the present utility model.

[0022] Figure 2 is a three-dimensional schematic diagram of another state of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0023] Figure 3 is an exploded schematic diagram of a perspective of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0024] Figure 4 is an exploded schematic diagram of another perspective of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0025] Figure 5 is a cross-sectional schematic diagram of a state of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0026] Figure 6 is a cross-sectional schematic diagram of another state of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0027] Figure 7 is a cross-sectional schematic diagram of one of the release processes of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0028] Figure 8 is a cross-sectional schematic diagram of the second release process of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model.

[0029] Figure 9 is a cross-sectional schematic diagram of the third release process of the electromagnetic release device according to the above-mentioned preferred embodiment of the present utility model. Detailed Description of the Invention

[0030] Before detailing any embodiments of the present invention, it should be understood that the present invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the terminology and phrases used herein are for the purpose of description and should not be regarded as limiting. As used herein, the terms "comprising," "comprises," or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted," "connected," "supported," and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0031] And, on the one hand, in the disclosure of the present invention, the orientation or positional relationship indicated by the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the other hand, the term "a" should be understood as "at least one" or "one or more." That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as limiting the quantity.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the said principles, the embodiments of the present invention can have any deformation or modification.

[0033] Referring to the appended drawings of the specification of the present invention Figures 1 to 9 , an electromagnetic release device according to a preferred embodiment of the present invention will be disclosed and described hereinafter. The electromagnetic release device is used to release the cable 101 of devices such as subsea monitoring instruments 100. The electromagnetic release device may include a housing 10, a controller 20, a power supply 30, a coil 40, a magnetic locking tongue 50, a release hook 60, and an elastic element 70.

[0034] Specifically, the housing 10 includes an upper housing 11, a lower housing 12, and has a receiving space 13 and an activity chamber 14. The upper housing 11 and the lower housing 12 are installed in a watertight manner. The receiving space 13 of the housing 10 is formed between the upper housing 11 and the lower housing 12. The activity chamber 14 is formed in the lower housing 12. The activity chamber 14 has a bottom opening, and the receiving space 13 surrounds the periphery of the activity chamber 14. The controller 20, the power supply 30, and the coil 40 are received in the receiving space 13 between the upper housing 11 and the lower housing 12. In this way, the controller 20, the power supply 30, and the coil 40 are located in a watertight environment. That is, the receiving space 13 of the housing 10 is a watertight chamber. Or rather, the housing 10 has a watertight receiving space 13.

[0035] Furthermore, the housing 10 includes at least one sealing ring 15. The sealing ring 15 is clamped between the upper housing 11 and the lower housing 12 to prevent a gap from being generated at the installation position of the upper housing 11 and the lower housing 12 by the sealing ring 15, avoid water leakage at the installation position of the upper housing 11 and the lower housing 12, and ensure that the receiving space 13 of the housing 10 forms a watertight chamber.

[0036] The magnetic locking tongue 50 includes a locking tongue rod 51 and a locking stop portion 52 provided at the bottom end of the locking tongue rod 51. The top of the locking tongue rod 51 extends into the activity chamber 14 of the housing 10 and can move up and down along the activity chamber 14 of the housing 10. And the activity chamber 14 of the housing 10 restricts the movement path of the locking tongue rod 51 to prevent the locking tongue rod 51 from swinging left and right when moving up and down.

[0037] In a specific example of the electromagnetic release device of the present utility model, the material of the magnetic locking tongue 50 can be iron so that the magnetic locking tongue 50 has magnetism. It can be understood that since the coil 40 surrounds the activity chamber 14 of the housing 10, the locking tongue rod 51 of the magnetic locking tongue 50 is surrounded by the coil 40. Preferably, the locking tongue rod 51 and the locking stop portion 52 of the magnetic locking tongue 50 are of an integral structure, that is, the locking tongue rod 51 extends integrally upward from the locking stop portion 52.

[0038] The elastic element 70 is sleeved on the locking tongue rod 51, and the bottom end of the elastic element 70 abuts against the locking stop portion 52, and the top end of the elastic element 70 abuts against the lower housing 12. For example, in the appendix Figures 1 to 9In this specific example of the electromagnetic release device shown, the elastic element 70 may be a compression spring, which can deform and accumulate elastic potential energy when compressed, and when the pressure applied to the elastic element 70 is removed, this elastic potential energy enables the elastic element 70 to return to its initial state.

[0039] The release hook 60 includes a release hook body 61 and a movable hook 62. The release hook body 61 is disposed on the lower housing 12, and the release hook body 61 has a laterally open locking groove 611. Figures 1 to 9 In this specific example of the electromagnetic release device shown, the release hook body 61 can be installed on the lower housing 12 by a set of screws, and in other specific examples of the electromagnetic release device, the release hook body 61 can also be directly welded to the lower housing 12. The movable hook 62 has a relative rotating end 621 and a locking hook end 622. The rotating end 621 of the movable hook 62 is rotatably installed on the release hook body 61, and the locking hook end 622 of the movable hook 62 can be locked or released by the locking portion 52 of the magnetic locking tongue 50. When the locking portion 52 of the magnetic locking tongue 50 locks the locking hook end 622 of the movable hook 62, the movable hook 62 closes the laterally open portion of the locking groove 611 of the release hook body 61. When the locking portion 52 of the magnetic locking tongue 50 releases the locking hook end 622 of the movable hook 62, the movable hook 62 opens the laterally open portion of the locking groove 611 of the release hook body 61. By allowing the locking tongue rod 51 of the magnetic locking tongue 50 to move upward in the movable cavity 14 of the housing 10, the locking portion 52 can be allowed to switch from the state of locking the locking hook end 622 of the movable hook 62 to the state of releasing the locking hook end 622 of the movable hook 62. Correspondingly, by allowing the locking tongue rod 51 of the magnetic locking tongue 50 to move downward in the movable cavity 14 of the housing 10, the locking portion 52 can be allowed to switch from the state of releasing the locking hook end 622 of the movable hook 62 to the state of locking the locking hook end 622 of the movable hook 62.

[0040] The power supply 30 and the coil 40 are connected to the controller 20. When the controller 20 receives a water surface signal and controls the power supply 30 to supply power to the coil 40, the coil 40 generates an electromagnetic field. The electromagnetic field generated by the coil 40 interacts with the locking tongue rod 51 of the magnetic locking tongue 50 to pull the locking tongue rod 51 of the magnetic locking tongue 50 to move upward along the moving cavity 14 of the housing 10. At this time, on the one hand, the locking portion 52 of the magnetic locking tongue 50 presses the elastic element 70 towards the direction of the lower housing 12, causing the elastic element 70 to deform and accumulate elastic potential energy. On the other hand, under the action of the self-weight of the moving hook 62 and the weight of devices such as the seabed monitoring instrument 100, the rotating end 621 of the moving hook 62 rotates to open the side opening of the locking groove 611 of the release hook body 61, thereby allowing the cable 101 of the devices such as the seabed monitoring instrument 100 to fall off from the release hook 60, and then completing the release work of the devices such as the seabed monitoring instrument 100.

[0041] It can be understood that when the controller 20 controls the power supply 30 to stop supplying power to the coil 40, the electromagnetic field generated by the coil 40 disappears. At this time, during the process of the elastic element 70 restoring to its initial state, it pushes the locking portion 52 of the magnetic locking tongue 50 to move away from the lower housing 12.

[0042] It is worth mentioning that the specific structure of the housing 10 is not limited in the electromagnetic release device of the present utility model. For example, in Figure 1 to Figure 9 this specific embodiment of the electromagnetic release device shown, the upper housing 11 and the lower housing 12 of the housing 10 can be locked by a set of screws to achieve the fixed connection between the upper housing 11 and the lower housing 12. Optionally, in other examples of the electromagnetic release device of the present utility model, the connection between the upper housing 11 and the lower housing 12 can also be welded to improve the watertightness of the electromagnetic release device.

[0043] In a specific embodiment of the electromagnetic release device of the present utility model, the lower housing 12 includes an extension portion 122 and a packaging portion 123. The extension portion 122 extends upward from the middle of the packaging portion 123 into the interior of the upper housing 11. The packaging portion 123 closes the opening of the upper housing 11. In this way, the housing 10 forms a watertight accommodation space 13 between the upper housing 11 and the lower housing 12. The extension portion 122 forms the moving cavity 14 of the housing 10. In this way, the accommodation space 13 surrounds the moving cavity 14 on all sides, and the accommodation space 13 and the moving cavity 14 of the housing 10 are isolated from each other and not connected.

[0044] Preferably, the lower housing 12 further includes a mounting arm 124. The mounting arm 124 is formed at the edge of the packaging portion 123 and extends integrally upward from the packaging portion 123 into the interior of the upper housing 11, and the mounting arm 124 extends into the interior of the upper housing 11.

[0045] Preferably, the sealing ring 15 is sleeved on the mounting arm 124 of the lower housing 12. In this way, the sealing ring 15 is clamped between the upper housing 11 and the lower housing 12 to prevent a gap from being generated at the mounting position of the upper housing 11 and the lower housing 12 by the sealing ring 15. The number of the sealing rings 15 can be two to ensure the sealing effect of the sealing ring 15.

[0046] Refer to the attached Figure 3 and Figure 4 , the release hook body 61 has a guiding groove 612 with a non-circular cross-section. The cross-sectional shape and size of the locking portion 52 of the magnetic locking tongue 50 match the shape and size of the guiding groove 612 of the release hook body 61, and the locking portion 52 is arranged to be able to move up and down in the guiding groove 612 of the release hook body 61. In this way, the electromagnetic release device can ensure that the locking portion 52 of the magnetic locking tongue 50 can lock the locking hook end 622 of the moving hook 62 after moving downward. For example, in this specific example of the electromagnetic release device of the present utility model, the cross-sectional shape of the guiding groove 612 of the release hook body 61 is rectangular. Correspondingly, the cross-sectional shape of the locking portion 52 of the magnetic locking tongue 50 is also rectangular, and the cross-sectional size of the locking portion 52 is slightly smaller than the size of the guiding groove 612 of the release hook body 61. In this way, the locking portion 52 of the magnetic locking tongue 50 can only move up and down in the guiding groove 612 of the release hook body 61, avoiding the locking portion 52 rotating relative to the release hook body 61. Thus, the electromagnetic release device can ensure that the locking portion 52 of the magnetic locking tongue 50 can lock the locking hook end 622 of the moving hook 62 after moving downward.

[0047] Further, the locking hook end 622 of the movable hook 62 has a step 6221 and a groove 6222 located outside the step 6221. The locking portion 52 of the magnetic locking tongue 50 has at least one downwardly extending blocking arm 521, wherein the blocking arm 521 of the locking portion 52 can extend into the groove 6222 of the locking hook end 622 of the movable hook 62. In this way, the blocking arm 521 of the locking portion 52 can block the step 6221 outside the step 6221 of the locking hook end 622 of the movable hook 62, preventing the movable hook 62 from rotating relative to the release hook body 61. Thus, the locking portion 52 of the magnetic locking tongue 50 locks the locking hook end 622 of the movable hook 62.

[0048] Furthermore, the release hook body 61 has a first extension arm 613 and a second extension arm 614. The first extension arm 613 and the second extension arm 614 extend at intervals from each other to form the locking groove 611 between the first extension arm 613 and the second extension arm 614. The rotating end 621 of the movable hook 62 is rotatably mounted on the first extension arm 613. When the blocking arm 521 of the locking portion 52 extends into the groove 6222 of the locking hook end 622 of the movable hook 62, the second extension arm 614 of the release hook body 61 also extends into the groove 6222 of the locking hook end 622 of the movable hook 62. In this way, the second extension arm 614 of the release hook body 61 can hide the blocking arm 521 of the locking portion 52, preventing the blocking arm 521 of the locking portion 52 from being accidentally touched under the sea, which may cause the blocking arm 521 of the locking portion 52 to disengage from the groove 6222 of the locking hook end 622 of the movable hook 62, thereby ensuring the reliability of the electromagnetic release device.

[0049] Preferably, the second extension arm 614 of the release hook body 61 has a positioning groove 6141. When the locking portion 52 of the magnetic locking tongue 50 locks the locking hook end 622 of the movable hook 62, the end of the locking hook end 622 of the movable hook 62 can be positioned in the positioning groove 6141 of the second extension arm 614 of the release hook body 61, preventing the locking hook end 622 of the movable hook 62 from swaying left and right, thereby ensuring the reliability of the electromagnetic release device.

[0050] Reference Figures 3 to 9 , the release hook 60 further includes at least two limiting posts 63. The limiting posts 63 are respectively arranged on the release hook body 61 and located in the guiding groove 612 to block the locking portion 52, thereby restricting the maximum distance that the magnetic locking tongue 50 moves downward.

[0051] The electromagnetic release device includes a fixing part 80, which includes an upper fixing element 81 and a lower fixing element 82. The upper fixing element 81 is sleeved on the lower fixing element 82. The power supply 30 is sleeved on the fixing part 80. The fixing part 80 is arranged at the upper end of the coil 40. The coil 40 supports the fixing part 80. And the opposite ends of the upper fixing element 81 and the lower fixing element 82 extend to both sides respectively to prevent the power supply 30 installed on the fixing part 80 from moving up and down, so as to improve the stability of the power supply 30 when in use.

[0052] Specifically, the power supply 30 is sleeved on the upper fixing element 81. The lower end and the upper end of the power supply 30 respectively abut against the lower fixing element 82 and the upper fixing element 81. It can also be that the lower end and the upper end of the power supply 30 respectively abut against the upper fixing element 81 and the lower fixing element 82. The sleeving manner of the upper end of the power supply 30 against the lower fixing element 82 and the upper fixing element 81 is not limited. And the upper fixing element 81 and the lower fixing element 82 respectively abut against the inner wall of the upper housing 11 to further prevent the power supply 30 installed on the fixing part 80 from moving.

[0053] The upper end part of the fixing part 80 installed at the upper end of the coil 40 and the top of the extending part 122 of the lower housing 12 are on the same horizontal line. The controller 20 is arranged on the top of the lower housing 12 and the fixing part 80. The controller 20 can be fixed to the fixing part 80 or the extending part 122 by screws or glue, or can be fixed to both the extending part 122 and the fixing part 80 at the same time. The fixing manner of the controller 20 in the present utility model is not limited.

[0054] In addition, referring to the appendix Figures 1 to 9 The electromagnetic release device further includes a ring body 90, which is arranged on the housing 10. Wherein the pulling rope for pulling the electromagnetic release device can be fixedly connected to the ring body 90. In a specific example of the electromagnetic release device of the present utility model, the ring body 90 can be integrally formed with the upper housing 11 of the housing 10, or the ring body 90 can be welded to the upper housing 11, or the ring body 90 can be installed on the upper housing 11 by screws.

[0055] Appendix Figures 7 to 9 shows the release process of the electromagnetic release device of the present utility model.

[0056] Referring to the appendix Figure 7, under the action of the elastic element 70, the retaining arm 521 of the locking portion 52 of the magnetic locking tongue 50 is held in the groove 6222 of the locking hook end 622 of the movable hook 62, so that the retaining arm 521 of the locking portion 52 blocks the step 6221 outside the step 6221 of the locking hook end 622 of the movable hook 62, preventing the movable hook 62 from rotating relative to the release hook body 61. Thus, the locking portion 52 of the magnetic locking tongue 50 locks the locking hook end 622 of the movable hook 62. At this time, the movable hook 62 closes the side opening of the locking groove 611 of the release hook body 61 to hook the cable 101 of the device 100 such as the subsea monitoring instrument.

[0057] Reference attachment Figure 8 and Figure 9 , when the controller 20 controls the power supply 30 to supply power to the coil 40, the coil 40 generates an electromagnetic field. The electromagnetic field generated by the coil 40 interacts with the locking tongue rod 51 of the magnetic locking tongue 50 to drive the locking tongue rod 51 to move upward in the movable cavity 14 of the housing 10. The locking tongue rod 51 drives the locking portion 52 to move toward the lower housing 12. At this time, on the one hand, the locking portion 52 of the magnetic locking tongue 50 presses the elastic element 70 toward the lower housing 12, causing the elastic element 70 to deform and accumulate elastic potential energy. On the other hand, under the action of the self-weight of the movable hook 62 and the weight of the device 100 such as the subsea monitoring instrument, the rotating end 621 of the movable hook 62 rotates to open the side opening of the locking groove 611 of the release hook body 61, and the cable 101 of the device 100 such as the subsea monitoring instrument falls off from the release hook 60, thereby realizing the release operation of the device 100 such as the subsea monitoring instrument. It can be understood that when the controller 20 controls the power supply 30 to stop supplying power to the coil 40, the coil 40 no longer generates an electromagnetic field. During the process of the elastic element 70 restoring to its initial state, it pushes the locking portion 52 of the magnetic locking tongue 50 to move away from the lower housing 12. The locking portion 52 drives the locking tongue rod 51 to move downward in the movable cavity 14 of the housing 10. During this process, the limiting post 63 of the release hook 60 blocks the locking portion 52 of the magnetic locking tongue 50 to limit the maximum distance of the downward movement of the magnetic locking tongue 50.

[0058] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The objectives of the present utility model have been fully and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments, and without departing from the said principles, any variations or modifications can be made to the embodiments of the present utility model.

Claims

1. An electromagnetic release device, characterized in that, Comprising: A coil; An elastic element; A housing, wherein the housing has a watertight accommodation space and an active cavity with an open bottom, the accommodation space and the active cavity are isolated from each other, and the accommodation space surrounds the active cavity on all sides, wherein the coil is disposed in the accommodation space of the housing, and the coil surrounds the active cavity of the housing; A magnetic locking tongue, wherein the magnetic locking tongue includes a locking tongue rod and a locking stop portion provided at the bottom end of the locking tongue rod, the top end of the locking tongue rod is movably provided up and down in the active cavity of the housing, wherein the elastic element is sleeved on the locking tongue rod, and one end of the elastic element abuts against the locking stop portion, and the other end abuts against the bottom of the housing. When the coil is energized, the electromagnetic field generated by the coil interacts with the locking tongue rod to drive the locking tongue rod to move upward in the active cavity of the housing and compress the elastic element during this process; A release hook, wherein the release hook includes a release hook body and a movable hook, the release hook body is provided at the bottom of the housing, and the release hook body has a locking groove with a side opening, the movable hook has a relative rotating end and a locking hook end, the rotating end of the movable hook is rotatably mounted on the release hook body, and the locking stop portion of the magnetic locking tongue is provided to be able to lock or release the locking hook end of the movable hook. When the locking stop portion locks the locking hook end of the movable hook, the movable hook closes the side opening of the locking groove of the release hook body. When the locking stop portion releases the locking hook end of the movable hook, the movable hook opens the side opening of the locking groove of the release hook body.

2. The electromagnetic release device according to claim 1, wherein the locking hook end of the movable hook has a step and a groove located outside the step, and the locking stop portion of the magnetic locking tongue has a downwardly extending retaining arm, wherein the retaining arm of the locking stop portion can extend into the groove of the locking hook end of the movable hook, so that the retaining arm of the locking stop portion blocks the step outside the step of the locking hook end of the movable hook, thereby the locking stop portion locks the locking hook end of the movable hook.

3. The electromagnetic release device according to claim 2, wherein the release hook body has a first extension arm and a second extension arm, the first extension arm and the second extension arm extend at intervals from each other to form the locking groove between the first extension arm and the second extension arm, wherein the rotating end of the movable hook is rotatably mounted on the first extension arm. When the retaining arm of the locking stop portion extends into the groove of the locking hook end of the movable hook, the second extension arm of the release hook body extends into the groove of the locking hook end of the movable hook.

4. The electromagnetic release device according to claim 3, wherein the second extension arm of the release hook body has a positioning groove, and the end of the locking hook end of the movable hook can be positioned in the positioning groove of the second extension arm of the release hook body.

5. The electromagnetic release device according to claim 1, wherein the release hook body has a guiding groove with a non-circular cross-section, the cross-sectional shape and size of the locking portion match the shape and size of the guiding groove of the release hook body, and the locking portion is arranged to move up and down within the guiding groove of the release hook body.

6. The electromagnetic release device according to claim 5, wherein the cross-sectional shape of the guiding groove of the release hook body is rectangular, the cross-sectional shape of the locking portion is rectangular, and the cross-sectional size of the locking portion is slightly smaller than the size of the guiding groove of the release hook body.

7. The electromagnetic release device according to claim 5, wherein the release hook further includes a limiting post, the limiting post is arranged on the release hook body and within the guiding groove for blocking the locking portion to limit the maximum distance of the magnetic locking tongue moving downward.

8. The electromagnetic release device according to any one of claims 1 to 7, wherein the housing includes an upper housing and a lower housing, the upper housing and the lower housing are installed with each other, the accommodating space of the housing is formed between the upper housing and the lower housing, the moving cavity is formed in the lower housing, and the release hook body is arranged in the lower housing.

9. The electromagnetic release device according to claim 8, wherein the lower housing includes an extending portion and a packaging portion, the extending portion extends upward from the middle of the packaging portion to the inside of the upper housing and the extending portion forms the moving cavity, the packaging portion is used for closing the bottom opening of the upper housing, so as to form the accommodating space between the upper housing and the lower housing, and the accommodating space surrounds the moving cavity on all sides, and the coil is sleeved on the extending portion of the lower housing.

10. The electromagnetic release device according to claim 8, wherein the electromagnetic release device further includes a controller and a power supply, the controller and the power supply are both arranged in the accommodating space of the housing, and the power supply and the coil are respectively connected to the controller.

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