Rotating flap lock device

Abstract

A rotary cover lock device, characterized in that it includes a base, a rotating assembly, a slider crank mechanism, a support and a locking rod, wherein the rotating assembly is rotatably arranged on the base; one end of the slider crank mechanism is connected to the rotating assembly, and the other end is limitedly connected to the base and can move relative to the base under the drive of the rotating assembly; the support is rotatably connected to the base and linked to the slider crank mechanism; the support can be driven by the slider crank mechanism to rotate around the base; the locking rod is fixedly connected to the support; wherein, when the rotating assembly rotates, it can drive the slider crank mechanism to move, and when the slider crank mechanism moves, it can drive the support to rotate around the base and drive the locking rod out of its original position. The rotary cover lock device of the present invention has reliable connection, can prevent accidental unlocking, is easy to operate, and can greatly improve the convenience and efficiency of maintenance and overhaul.

Description

[Technical field]

[0001] The invention relates to the field of aviation, and in particular to a rotary hatch lock device suitable for quickly unlocking and locking an aircraft maintenance hatch. [Background technology]

[0002] With the continuous development of aviation technology, the requirements for aviation structural parts are getting higher and higher. Existing aircraft still use screws to fasten the maintenance hatch. Although this design is simple, it needs to be disassembled one by one during maintenance, which wastes time and is prone to failure over time, affecting the attendance rate. For supersonic stealth aircraft, the maintenance hatch needs to fit tightly, the shape of the fastener connection cannot change suddenly, and no leaking gaps or holes are allowed. Traditional fastener connections cannot meet the requirements. Therefore, there is an urgent need for a locking device that is easy to operate, simple to maintain, reliable in connection, and has no leaking gaps or holes to solve the connection problem of the hatch maintenance cover. [Summary of the invention]

[0003] The present invention aims to solve the above problems and provides a rotary cover locking device.

[0004] In order to solve the above problems, the present invention provides a rotating cover lock device, characterized in that it includes a base, a rotating component, a crank slider mechanism, a support and a locking rod, wherein the rotating component is rotatably arranged on the base; one end of the crank slider mechanism is connected to the rotating component, and the other end is limitedly connected to the base and can move relative to the base under the drive of the rotating component; the support is rotatably connected to the base and is linked to the crank slider mechanism; the support can be driven by the crank slider mechanism to rotate around the base; the locking rod is fixedly connected to the support; wherein, when the rotating component rotates, the crank slider mechanism can be driven to move, and when the crank slider mechanism moves, it can drive the support to rotate around the base and drive the locking rod to move out of its original position.

[0005] Furthermore, the rotating assembly includes an inner rotating sleeve, a push rod, an elastic member and a rotating linkage member, the inner rotating sleeve is rotatably connected to the base, and one end thereof extends out of the base; the push rod is sleeved in the inner rotating sleeve and can move along the axial direction of the inner rotating sleeve; the elastic member is arranged between the inner rotating sleeve and the push rod along the axial direction of the push rod; the rotating linkage member is sleeved on the inner rotating sleeve and can rotate synchronously with the inner rotating sleeve; the rotating linkage member is connected to the crank slider mechanism.

[0006] Furthermore, a first stroke hole perpendicular to the axial direction of the inner rotating sleeve is provided on the inner rotating sleeve; a groove is provided at a position of the base facing the rotating linkage member, and the groove is connected with the first stroke hole; a bayonet is provided at a position of the rotating linkage member facing the base, and the bayonet can be rotated to be opposite to or staggered with the groove; a locking piece protruding from the outer wall of the push rod is provided on the push rod, and the free end of the locking piece passes through the first stroke hole and extends to the outside of the inner rotating sleeve; in a locked state, the free end of the locking piece is located in the groove to limit the circumferential rotation of the inner rotating sleeve; when the push rod is pushed axially, the free end of the locking piece can be moved from the groove along the axial direction of the push rod to the bayonet.

[0007] Furthermore, the inner rotating sleeve is provided with a wrench hole, a limiting hole and a center axis hole which are axially arranged and pass through the two ends of the inner rotating sleeve; the limiting hole is located between the wrench hole and the center axis hole; the circumferential dimension of the center axis hole is smaller than the circumferential dimension of the limiting hole and a first limiting step is formed between the center axis hole and the limiting hole; the push rod includes a long rod portion and a limiting portion, the circumferential dimension of the limiting portion is larger than the circumferential dimension of the long rod portion and a second limiting step is formed between the limiting portion and the long rod portion; the long rod portion is coaxially arranged in the center axis hole and extends out of the inner rotating sleeve; the elastic member is arranged in the wrench hole and the limiting hole, one end of which abuts against the first limiting step, and the other end of which abuts against the second limiting step.

[0008] Furthermore, an axial limiter is provided on one end of the long rod portion opposite to the limiting portion, and the axial limiter can abut against the end surface of the rotating linkage member.

[0009] Furthermore, the first travel hole vertically penetrates the central axis hole.

[0010] Furthermore, the crank slider mechanism includes a connecting rod and a slider, one end of the connecting rod is rotatably connected to the rotating linkage member; the slider is limit-connected to the base and is rotatably connected to the end of the connecting rod.

[0011] Furthermore, a slide groove is provided on the base, and second travel holes are provided on the side walls opposite to the slide groove; the slider is located in the slide groove, and a linkage pin is connected to the slider, the linkage pin is horizontally located in the slide groove, and both ends of the linkage pin respectively pass through the second travel holes and are connected to the support.

[0012] Furthermore, the support includes support arm portions arranged at intervals and connecting portions connected between the support arm portions, the support arm portions are respectively arranged outside the two sides of the slide groove, the free ends of the support arm portions are respectively rotatably connected to the base, and third stroke holes are respectively provided on the support arm portions, and the third stroke holes are located between the free ends of the support arm portions and the connecting portions; the two ends of the linkage pin are respectively connected to the third stroke hole; when the slider moves along the slide groove, the linkage pin can move along the second stroke hole to drive the support to rotate around the base.

[0013] Furthermore, the locking rod is vertically connected to the connecting portion.

[0014] The beneficial contribution of the present invention is that it effectively solves the above problems. The rotary cover lock device of the present invention comprises a base, a rotating assembly, a crank slider mechanism, a support and a locking rod, wherein the rotating assembly is rotatably connected to the base and connected to the crank slider mechanism. The crank slider mechanism is connected to the support, and can convert the rotation of the rotating assembly into linear motion, thereby driving the support to rotate around the base, so that the locking rod is separated from the original position for locking or unlocking. In the rotary cover lock device of the present invention, in the default state, the circumferential rotation of the rotating assembly is limited by the stopper, and an elastic member is provided inside for pre-tightening, which can prevent accidental unlocking in the locked state; when unlocking is required, the corresponding operating tool is used to push the push rod and rotate it, so that the unlocking operation can be completed quickly, and the unlocking state can be maintained by the stopper; when re-locking is required, it only needs to be rotated in the opposite direction to the original position, and the elastic force of the elastic member will drive the push rod to automatically reset and realize automatic locking, and the operation is very simple. The operation entrance of the rotary cover lock device of the present invention is flush with the device surface in the default state, and it has no gaps and holes, which is suitable for aviation environment. In addition, the rotary cover lock device of the present invention can be locked and unlocked by twisting with a corresponding tool, and its operation is very convenient and does not require frequent disassembly and assembly. It is used for connecting the hatch maintenance cover, which can greatly improve the convenience and efficiency of maintenance and inspection. The rotary cover lock device of the present invention is in a locked state by default, which can prevent accidental unlocking, and its connection is very reliable.

Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structural decomposition of the present invention.

[0017] Figure 3 2 is a cross-sectional view of the present invention, which shows the state when the locking member is in the groove.

[0018] Figure 4 24 is a cross-sectional view of the present invention, which shows the state when the locking member moves from the groove to the bayonet 244.

[0019] Figure 5 This is a schematic diagram of the unlocked state.

[0020] Figure 6 It is a schematic diagram of the overall structure of the inner rotating sleeve.

[0021] Figure 7 It is a cross-sectional view of the inner rotating sleeve.

[0022] Figure 8 is a schematic diagram of the rotating linkage.

[0023] Figure symbols: base 10, shaft hole 11, slide groove 12, second stroke hole 13, first lug portion 14, screw hole 15, groove 16, sixth shaft hole 17, rotating assembly 20, inner rotating sleeve 21, first rotating portion 211, second rotating portion 212, third rotating portion 213, limiting portion 214, wrench hole 215, limiting hole 216, central shaft hole 217, first limiting step 218, first stroke hole 219, push rod 22, limiting portion 221, long rod portion 222, second limiting step 223, elastic member 23, rotating linkage member 24, through hole 241, second lug portion 242, first axial hole 243, bayonet 244, axial limit member 25, stop member 26, latch pin 27, crank slider mechanism 30, connecting rod 31, second axial hole 311, third axial hole 312, slider 32, fourth axial hole 321, fifth axial hole 322, support 40, support arm portion 41, seventh axial hole 411, third stroke hole 412, connecting portion 42, locking rod 50, first rotating shaft 61, second rotating shaft 62, third rotating shaft 63, linkage pin 70. [Specific implementation method]

[0024] The following examples are provided to further explain and supplement the present invention and do not constitute any limitation to the present invention.

[0025] like Figures 1 to 8 As shown, the rotary cover lock device of the present invention comprises a base 10, a rotating assembly 20, a slider crank mechanism 30, a support 40 and a locking rod 50. The rotating assembly 20 is rotatably connected to the base 10 and connected to the slider crank mechanism 30. The slider crank mechanism 30 is connected to the support 40, which can convert the rotation of the rotating assembly 20 into a linear motion, thereby driving the support 40 to rotate around the base 10, so that the locking rod 50 is separated from the original position for locking or unlocking.

[0026] like Figure 1 to Figure 4 As shown, the base 10 is provided with a shaft hole 11 for installing the rotating assembly 20. The shaft hole 11 is a cylindrical through hole. In order to facilitate the limited installation of the inner rotating sleeve 21 of the rotating assembly 20, the shaft hole 11 is preferably set as a countersunk hole.

[0027] like Figure 2 As shown, in order to limit the installation of the crank slider mechanism 30, a slide groove 12 is provided on the base 10. The slide groove 12 is a linear groove, which is used to constrain the displacement of the slider 32 of the crank slider mechanism 30 so that the slider 32 moves smoothly along a straight line. In this embodiment, the extension direction of the slide groove 12 is perpendicular to the axial direction of the shaft hole 11.

[0028] like Figure 2 As shown, in order to facilitate the crank slider mechanism 30 to drive the support 40 to rotate, second stroke holes 13 are respectively provided on the opposite side walls of the slide slot 12. The second stroke holes 13 are long holes, which are relatively spaced apart, and their extending direction is parallel to the extending direction of the slide slot 12. In this embodiment, the length of the second stroke hole 13 is less than the length of the slide slot 12.

[0029] In addition, if Figure 2 As shown, for easy installation, a corresponding first lug portion 14 may be provided on the base 10, and a screw hole or through hole 15 may be provided on the first lug portion 14 to facilitate fixing the base 10 at the installation position by fasteners such as screws or rivets.

[0030] like Figure 1 to Figure 4 As shown, the rotating assembly 20 includes an inner rotating sleeve 21, a push rod 22, an elastic member 23, and a rotating linkage member 24. The inner rotating sleeve 21 is sleeved in the rotating shaft hole 11 of the base 10 and can rotate; the push rod 22 is sleeved in the inner rotating sleeve 21 and can move axially relative to the inner rotating sleeve 21. The elastic member 23 is arranged between the inner rotating sleeve 21 and the push rod 22, and is used to automatically reset the push rod 22. The rotating linkage member 24 is arranged outside the base 10 and sleeved on the inner rotating sleeve 21. It can rotate with the inner rotating sleeve 21 and is used to drive the crank slider mechanism 30 to move. Further, the rotating assembly 20 may also include an axial limiter 25, which is sleeved on the free end of the push rod 22 and is used to constrain the axial movement of the push rod 22.

[0031] like Figure 1 to Figure 4 As shown, the length of the inner rotating sleeve 21 is greater than the length of the shaft hole 11. When the inner rotating sleeve 21 is rotatably connected to the shaft hole 11 of the base 10, one end of the inner rotating sleeve 21 can extend out of the base 10 to connect to the rotating linkage 24.

[0032] In this embodiment, Figure 6 , Figure 7As shown, the inner rotating sleeve 21 includes an integrally formed first rotating portion 211, a second rotating portion 212, a third rotating portion 213 and a limiting portion 214 in sequence. In this embodiment, the diameters of the first rotating portion 211, the second rotating portion 212 and the third rotating portion 213 are successively reduced to form a limiting step structure. The limiting portion 214 is non-cylindrical and is used to limit the circumferential rotation of the rotating linkage 24. The shape of the limiting portion 214 can be set as required. In this embodiment, it is a block shape.

[0033] like Figure 2 , Figure 6 , Figure 7 As shown, the shapes and sizes of the first rotating part 211 and the second rotating part 212 match the rotating shaft hole 11 of the base 10; when the inner rotating sleeve 21 is arranged in the rotating shaft hole 11 of the base 10, the end faces of the first rotating part 211 and the second rotating part 212 are respectively flush with the end faces at both ends of the base 10, so that the third rotating part 213 and the limiting part 214 extend out of the base 10 to connect the rotating linkage 24.

[0034] like Figure 2 , Figure 6 , Figure 7 As shown, the interior of the inner rotating sleeve 21 is used to sleeve the push rod 22, and is provided with a wrench hole 215, a limit hole 216 and a central axis hole 217. The wrench hole 215, the limit hole 216 and the central axis hole 217 are mutually connected, and are respectively arranged along the axial direction of the inner rotating sleeve 21, and are coaxially arranged to penetrate the two ends of the inner rotating sleeve 21.

[0035] The wrench hole 215 is used to insert a wrench tool to force the inner rotating sleeve 21 to rotate. Generally, the wrench hole 215 can be set as a non-circular hole, for example, it can be set as a triangular hole, a square hole, a hexagonal hole, a pentagonal hole, etc. In this embodiment, the wrench hole 215 is a hexagonal hole, which is convenient for using a wrench with a hexagonal head to wrench.

[0036] like Figure 7 As shown, the limiting hole 216 is connected with the wrench hole 215, and is located between the wrench hole 215 and the central axis hole 217. The size of the limiting hole 216 should not hinder the axial movement of the push rod 22. In other words, the push rod 22 should be able to move from the wrench hole 215 to the limiting hole 216. The shape and size of the limiting hole 216 can be set as needed. In this embodiment, it is a cylindrical hole, and its diameter is consistent with the diameter of the circumscribed circle of the wrench hole 215. In other embodiments, the limiting hole 216 can also be set to have the same shape as the wrench hole 215.

[0037] like Figure 7As shown, the circumferential dimension of the central shaft hole 217 is smaller than the circumferential dimension of the limiting hole 216, so that a first limiting step 218 is formed between the central shaft hole 217 and the limiting hole 216. The first limiting step 218 can facilitate the installation of the elastic member 23.

[0038] The lengths of the wrench hole 215, the limiting hole 216, and the central shaft hole 217, i.e., the lengths along the axial direction, can be set as required. In this embodiment, the limiting hole 216 is located in the second rotating portion 212, and the central shaft hole 217 passes through the end surface of the limiting portion 214 to the second rotating portion 212 and is connected to the limiting hole 216.

[0039] like Figure 2 , Figure 6 , Figure 7 As shown, in order to facilitate locking and maintaining the locked state, a first stroke hole 219 is provided on the inner rotating sleeve 21. The movable direction of the first stroke hole 219 is parallel to the axial direction of the inner rotating sleeve 21. The first stroke hole 219 is a straight hole, and the locking member 26 can move linearly in the first stroke hole 219 along a direction parallel to the axial direction of the inner rotating sleeve 21. The first stroke hole 219 is a through hole, which penetrates the interior of the inner rotating sleeve 21. The first stroke hole 219 is distributed on the second rotating portion 212 and the third rotating portion 213, and is penetrated by the central axis hole 217. As mentioned above, the second rotating portion 212 is located inside the base 10, and the third rotating portion 213 is located outside the base 10. Therefore, when the inner rotating sleeve 21 is disposed in the rotating shaft hole 11 of the base 10, the first travel hole 219 is partially located inside the base 10 and partially located outside the base 10. In this way, the locking member 26 can move from the inside of the base 10 to the outside of the base 10.

[0040] like Figure 1 to Figure 4 As shown, the rotating linkage 24 is sleeved on the free end of the inner rotating sleeve 21, that is, the third rotating portion 213 and the limiting portion 214, and can rotate with the inner rotating sleeve 21. A through hole 241 whose shape matches that of the third rotating portion 213 and the limiting portion 214 is provided inside the rotating linkage 24, and the through hole 241 is limitedly connected to the inner rotating sleeve 21. In order to facilitate the connection with the crank slider mechanism 30, the rotating linkage 24 is provided with a second lug portion 242, and a first shaft hole 243 arranged along the axial direction is provided on the second lug portion 242, which is used to form a rotational connection with the crank slider mechanism 30 through the first rotating shaft 61. As shown Figure 2 , Figure 8 As shown, a bayonet 244 is provided on one side of the rotating linkage member 24 facing the base 10 . The bayonet 244 can be used to move the locking member 26 . The bayonet 244 is connected to the inner through hole 241 of the rotating linkage member 24 .

[0041] In addition, if Figure 2 , Figure 3 , Figure 4 As shown, in order to prevent the rotating linkage member 24 from axially moving relative to the inner rotating sleeve 21, a transverse pin hole can be set on the rotating linkage member 24 and the inner rotating sleeve 21, and the axial movement between the rotating linkage member 24 and the inner rotating sleeve 21 can be locked by inserting a pin 27 in the pin hole.

[0042] like Figure 2 , Figure 3 As shown, the push rod 22 is sleeved inside the inner rotating sleeve 21, and includes an integrally formed limiting portion 221 and a long rod portion 222. The limiting portion 221 can move in the wrench hole 215 of the inner rotating sleeve 21, and cannot pass through the central axis hole 217 of the inner rotating sleeve 21. The long rod portion 222 passes through the central axis hole 217 of the inner rotating sleeve 21 and extends out of the inner rotating sleeve 21. A second limiting step 223 is formed between the limiting portion 221 and the long rod portion 222, which is used to facilitate the setting of the elastic member 23. The shape of the limiting portion 221 can be set as needed. In this embodiment, the shape of the limiting portion 221 is consistent with the shape of the wrench hole 215, and it can close the wrench hole 215 to ensure that the outer surface is smooth and has no gaps. The long rod portion 222 is cylindrical.

[0043] To facilitate unlocking and locking, Figure 2 , Figure 3 , Figure 4 As shown, a stopper 26 protruding from the outer wall of the push rod 22 is provided. The stopper 26 is arranged transversely, and its free end protrudes from the long rod portion 222 of the push rod 22 and is perpendicular to the long rod portion 222. In this embodiment, the stopper 26 is a separate part, which is in the shape of a long cylinder, and is transversely inserted into the long rod portion 222 of the push rod 22 and is perpendicular to the long rod portion 222.

[0044] like Figure 2 , Figure 3 , Figure 4 As shown, in order to limit the axial movement of the push rod 22, an axial stopper 25 is provided at the free end of the push rod 22, that is, the part of the push rod 22 extending out of the inner rotating sleeve 21. The shape of the axial stopper 25 can be set as required. In this embodiment, the axial stopper 25 is a self-locking nut, which is sleeved on the free end of the push rod 22.

[0045] like Figure 2 , Figure 3 , Figure 4As shown, the elastic member 23 is disposed between the push rod 22 and the inner rotating sleeve 21, specifically, one end thereof abuts against the first limiting step 218, and the other end thereof abuts against the second limiting step 223. In this embodiment, the elastic member 23 is a spring, which is sleeved on the long rod portion 222 of the push rod 22 and is located between the stopper 26 and the limiting portion 221. In the default state, the elastic member 23 is in a natural state or a compressed state; when the push rod 22 is pushed axially so that the push rod 22 moves from the wrench hole 215 toward the limiting hole 216, the elastic member 23 is in a compressed state and stores force, so that it can be used for automatic reset of the push rod 22.

[0046] like Figure 2 , Figure 3 , Figure 4 As shown, a groove 16 is provided on the portion of the base 10 facing the rotating linkage member 24. The position of the groove 16 corresponds to the position of the first stroke hole 219. Specifically, the groove 16 corresponds to the hole portion of the first stroke hole 219 located in the base 10. The size of the groove 16 should not hinder the movement of the locking member 26.

[0047] The assembly relationship of the rotating assembly 20 is as follows:

[0048] like Figure 2 , Figure 3 , Figure 4As shown, the inner rotating sleeve 21 is sleeved in the rotating shaft hole 11 of the base 10 and can rotate in the base 10; the third rotating portion 213 and the limiting portion 214 of the inner rotating sleeve 21 extend out of the base 10; the rotating linkage 24 is sleeved on the third rotating portion 213 and the limiting portion 214 of the inner rotating sleeve 21 and can rotate synchronously with the inner rotating sleeve 21; the push rod 22 is sleeved in the inner rotating sleeve 21 and can move freely along the axial direction; the limiting portion of the push rod 22 221 is movably arranged in the wrench hole 215 of the inner rotating sleeve 21, and the long rod portion 222 of the push rod 22 passes through the central axis hole 217 of the inner rotating sleeve 21 and extends out of the inner rotating sleeve 21; the elastic member 23 is arranged between the push rod 22 and the inner rotating sleeve 21, and is used for the automatic reset of the push rod 22; the axial limiter 25 is arranged on the free end of the push rod 22 extending out of the inner rotating sleeve 21, and in the default state, the axial limiter 25 abuts against the rotating linkage member 24. The locking member 26 protrudes from the push rod 22, and passes through the first stroke hole 219 of the inner rotating sleeve 21 and extends out of the inner rotating sleeve 21. In the default state, that is, when the push rod 22 is not pushed, the free end of the locking member 26 passes through the first stroke hole 219 and is located in the groove 16 of the base 10. At this time, the existence of the locking member 26 can limit the circumferential rotation of the inner rotating sleeve 21, so that the inner rotating sleeve 21 cannot rotate; when the push rod 22 is pushed axially to compress the elastic member 23, the locking member 26 moves in the first stroke hole 219, and its free end can move axially from the groove 16 of the base 10 to the bayonet 244 of the rotating linkage member 24. , so as to move to the outside of the base 10 and form a limiting relationship with the rotating linkage 24; at this time, the inner rotating sleeve 21 is freed from the restriction and can rotate; if the inner rotating sleeve 21 is rotated, the rotating linkage 24 will rotate with the inner rotating sleeve 21, and at this time, the locking member 26 will be driven to rotate, so that the locking member 26 can be rotated to a position other than the groove 16 of the base 10, so as to abut against the end surface of the base 10 and make the push rod 22 unable to reset under the action of the elastic member 23, so as to maintain the current state. When the inner rotating sleeve 21 is rotated so that the bayonet 244 is opposite to the groove 16, the locking member 26 is opposite to the groove 16, and the locking member 26 can move axially. At this time, under the elastic force of the elastic member 23, the push rod 22 will move toward the wrench hole 215, so that the locking member 26 falls into the groove 16 of the base 10, and the push rod 22 returns to the default state and resets.

[0049] like Figure 2 As shown, the crank slider mechanism 30 includes a connecting rod 31 and a slider 32. One end of the connecting rod 31 is connected to the rotating linkage 24, and the other end is connected to the slider 32. The slider 32 is located in the slide groove 12 of the base 10 and connected to the support 40.

[0050] like Figure 2As shown, the shape of the connecting rod 31 is not limited, and it is suitable for convenient transmission and avoids interference with the base 10. A second shaft hole 311 and a third shaft hole 312 are respectively provided at both ends of the connecting rod 31 and are parallel to each other.

[0051] like Figure 2 As shown, the slider 32 is arranged in the slide groove 12 of the base 10, and can be constrained by the slide groove 12 to move in a straight line. A fourth shaft hole 321 and a fifth shaft hole 322 are arranged on the slider 32. The fourth shaft hole 321 and the fifth shaft hole 322 are perpendicular.

[0052] like Figure 2 , Figure 3 , Figure 4 As shown, the rotating linkage member 24 and the connecting rod 31 are rotatably connected via the first rotating shaft 61: the first rotating shaft 61 is rotatably connected to the first shaft hole 243 of the rotating linkage member 24 and the second shaft hole 311 of the connecting rod 31. In this embodiment, the first rotating shaft 61 and the first shaft hole 243 are clearance fit, and the first rotating shaft 61 and the second shaft hole 311 are interference fit.

[0053] like Figure 2 , Figure 3 , Figure 4 As shown, the connecting rod 31 and the slider 32 are rotatably connected via the second rotating shaft 62: the second rotating shaft 62 is rotatably connected to the third shaft hole 312 of the connecting rod 31 and the fourth shaft hole 321 of the slider 32. In this embodiment, the second rotating shaft 62 and the third shaft hole 312 are interference fit, and the second rotating shaft 62 and the fourth shaft hole 321 are clearance fit.

[0054] When the rotating linkage member 24 rotates, the rotating linkage member 24 drives the slider 32 to move through the connecting rod 31. The slider 32 is limited by the slide slot 12, so the slider 32 moves smoothly along a straight line.

[0055] When the slider 32 is located in the slide groove 12 , the fifth shaft hole 322 of the slider 32 corresponds to the second travel hole 13 on the base 10 .

[0056] like Figure 2 , Figure 3 , Figure 4 As shown, the slider 32 is connected to the support 40 through a linkage pin 70. The linkage pin 70 is in the shape of a long rod. The linkage pin 70 is arranged in the fifth shaft hole 322 of the slider 32, and both ends of the linkage pin 70 respectively pass through the second stroke hole 13 and extend out of the base 10 for connecting the support 40. The moving range of the linkage pin 70 is restricted by the second stroke hole 13.

[0057] like Figure 2 , Figure 3 , Figure 4 As shown, the support 40 is used to drive the lock rod 50 to move, and includes support arms 41 arranged at intervals and a connecting portion 42 connected between the support arms 41. In this embodiment, the support arms 41 and the connecting portion 42 are integrally formed. In other embodiments, the support arms 41 and the connecting portion 42 can also be fixedly connected together.

[0058] The distance between the arm portions 41 should be such that the arm portions 41 can be located outside the two sides of the slide groove 12 of the base 10 respectively.

[0059] like Figure 2 As shown, in order to be rotatably connected with the base 10, a seventh shaft hole 411 is respectively provided on the free end of the support arm portion 41, and a sixth shaft hole 17 is provided on the base 10. The base 10 and the support arm portion 41 are rotatably connected together through the third rotating shaft 63: the third rotating shaft 63 is rotatably connected in the sixth shaft hole 17 and the seventh shaft hole 411. The axial direction of the third rotating shaft 63 is parallel to the axial direction of the linkage pin 70. In this embodiment, the sixth shaft hole 17 is located below the slide slot 12.

[0060] like Figure 2 As shown, in order to enable the slider 32 to drive the support 40 to rotate, the support arm portion 41 is provided with third stroke holes 412 in opposite positions. The third stroke hole 412 is spaced apart from the seventh shaft hole 411, and the distance of the spacing can be set according to the distance between the second stroke hole 13 and the sixth shaft hole 17. The third stroke hole 412 is located between the seventh shaft hole 411 and the connecting portion 42. When the support arm portion 41 is located on both sides of the slide slot 12, the third stroke hole 412 is opposite to the second stroke hole 13, and the end of the linkage pin 70 is connected to the third stroke hole 412. In this way, when the slider 32 moves, the support 40 can rotate around the third rotating shaft 63 through the linkage of the linkage pin 70.

[0061] The shape of the connecting portion 42 is not limited, and it is preferably convenient for arranging the locking rod 50 .

[0062] The locking rod 50 is in the shape of a long rod and is used to lock the connected object; the locking rod 50 is vertically connected to the connecting portion 42 of the support 40. When the support 40 rotates, the locking rod 50 can move with the support 40, so as to be out of the original position.

[0063] Thus, the rotary cover lock device of the present invention is formed, and its overall assembly relationship is as follows:

[0064] like Figure 2 , Figure 3 , Figure 4As shown, the inner rotating sleeve 21 is sleeved in the rotating shaft hole 11 of the base 10, and the push rod 22 is arranged in the inner rotating sleeve 21 and can move in the axial direction; the elastic member 23 is arranged between the inner rotating sleeve 21 and the push rod 22, and is used to reset the push rod 22; the locking member 26 protrudes from the outer wall of the push rod 22, and passes through the first stroke hole 219 of the inner rotating sleeve 21 and can move in the groove 16 of the base 10 and the bayonet 244 of the rotating linkage member 24. The rotating linkage member 24 is sleeved on the end of the inner rotating sleeve 21 and is located outside the base 10; the rotating linkage member 24 can rotate with the inner rotating sleeve 21, and the rotating linkage member 24 is rotatably connected to the connecting rod 31 through the first rotating shaft 61; the connecting rod 31 is rotatably connected to the slider 32 through the second rotating shaft 62. The slider 32 is limitedly disposed in the slide groove 12 of the base 10, and is linked with the support 40 through the linkage pin 70; the support 40 is rotatably connected with the base 10 through the third rotating shaft 63. The lock rod 50 is fixedly connected with the support 40. When the inner rotating sleeve 21 rotates, the rotating linkage member 24 rotates accordingly, and drives the slider 32 to move through the connecting rod 31. The movement of the slider 32 drives the support 40 to rotate around the third rotating shaft 63, thereby driving the lock rod 50 to be lifted or pressed down, thereby realizing the unlocking or locking function.

[0065] The specific working principle of the rotary cover lock device of the present invention is as follows:

[0066] like Figure 3 As shown, in the locked state, i.e., the default state, the elastic member 23 is in a natural state or a slightly compressed state, and the locking member 26 is located in the groove 16 of the base 10, which can limit the rotation of the rotating assembly 20 to prevent accidental unlocking; the limiting portion 221 of the push rod 22 is located in the wrench hole 215 of the inner rotating sleeve 21, which can ensure that the outer surface of the device is smooth and seamless to meet the requirements of the aviation environment;

[0067] When unlocking is required, the push rod 22 is pushed with a wrench whose shape matches the wrench hole 215. At this time, the limiting portion 221 of the push rod 22 moves from the wrench hole 215 toward the limit hole 216; the wrench enters the wrench hole 215 and can drive the inner rotating sleeve 21 to rotate.

[0068] When the push rod 22 moves in the axial direction, the stopper 26 on the push rod 22 moves with the push rod 22, so that the stopper 26 moves from the groove 16 of the base 10 to the outside of the base 10 and is located in the bayonet 244 of the rotating linkage 24 (such as Figure 4As shown); at this time, the wrench is rotated, and the inner rotating sleeve 21 rotates under the action of the wrench and drives the rotating linkage member 24 to rotate synchronously; when the rotating linkage member 24 rotates, it drives the locking member 26 to rotate, so that the locking member 26 and the groove 16 are staggered and overlapped on the end surface of the base 10, thereby preventing the top rod 22 from resetting; at the same time, when the rotating linkage member 24 rotates, it also drives the connecting rod 31 to move, and the connecting rod 31 drives the slider 32 to move; the movement of the slider 32 drives the support 40 to rotate around the third rotating shaft 63, thereby lifting the locking rod 50 to unlock (as shown in FIG. Figure 5 Since the ejector rod 22 is restricted by the stopper 26, the ejector rod 22 cannot be automatically reset, thereby maintaining the current unlocked state.

[0069] When locking is required, the inner rotating sleeve 21 is rotated with a wrench to make the rotating linkage member 24 rotate synchronously; when the rotating linkage member 24 is rotated until its bayonet 244 is opposite to the groove 16, the stopper 26 loses its restriction and can fall into the groove 16 through the bayonet 244; during the unlocking process, the elastic member 23 is in a compressed state when the ejector rod 22 is pushed. At this time, when the stopper 26 is opposite to the groove 16, under the elastic force of the elastic member 23, the elastic member 23 can push the ejector rod 22 to move axially and reset; when the wrench is pulled out, the ejector rod 22 will reset to the default state, and the stopper 26 will fall into the groove 16 to restrict the rotation of the inner rotating sleeve 21 (such as Figure 3 In this process, the reverse rotation of the rotating linkage member 24 drives the support 40 to rotate in the reverse direction through the transmission of the crank slider mechanism 30, so that the locking rod 50 is pressed down to achieve the locking function.

[0070] Although the present invention is disclosed through the above embodiments, the scope of the present invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the present invention.

Claims

1. A rotary cover lock device, characterized in that: It includes: Base (10), A rotating assembly (20) rotatably mounted on the base (10); A crank slider mechanism (30), one end of which is connected to the rotating assembly (20), and the other end of which is limitatively connected to the base (10) and can move relative to the base (10) under the drive of the rotating assembly (20); A support (40) is rotatably connected to the base (10) and is linked to the crank slider mechanism (30); the support (40) can be driven by the crank slider mechanism (30) to rotate around the base (10); A locking rod (50) fixedly connected to the support (40); Wherein, when the rotating assembly (20) rotates, it can drive the crank slider mechanism (30) to move, and when the crank slider mechanism (30) moves, it can drive the support (40) to rotate around the base (10) and drive the locking rod (50) to leave the original position; The rotating assembly (20) comprises: The inner rotating sleeve (21) is rotatably connected to the base (10), and one end of the inner rotating sleeve (21) extends out of the base (10); the inner rotating sleeve (21) is provided with a third rotating portion (213) and a limiting portion (214). A push rod (22) is sleeved in the inner rotating sleeve (21) and is movable along the axial direction of the inner rotating sleeve (21); An elastic member (23) is arranged between the inner rotating sleeve (21) and the push rod (22) along the axial direction of the push rod (22); a rotating linkage member (24) sleeved on the third rotating portion (213) and the limiting portion (214) of the inner rotating sleeve (21), wherein the limiting portion (214) can limit the circumferential rotation of the rotating linkage member (24) so ​​that the rotating linkage member (24) can rotate synchronously with the inner rotating sleeve (21); the rotating linkage member (24) is connected to the crank slider mechanism (30); The inner rotating sleeve (21) is provided with a first travel hole (219) perpendicular to its axial direction; A groove (16) is provided at a position of the base (10) facing the rotating linkage member (24), and the groove (16) is connected to the first travel hole (219); A bayonet (244) is provided at a position of the rotating linkage member (24) facing the base (10), and the bayonet (244) can be rotated to be opposite to or offset from the groove (16); The top rod (22) is provided with a locking piece (26) protruding from the outer wall thereof, and the free end of the locking piece (26) passes through the first stroke hole (219) and protrudes out of the inner rotating sleeve (21); In the locked state, the free end of the locking member (26) is located in the groove (16) to limit the circumferential rotation of the inner rotating sleeve (21) and the push rod (22); when the push rod (22) is pushed axially, the free end of the locking member (26) can be moved from the groove (16) along the axial direction of the push rod (22) to the bayonet (244), and the wrench is rotated. The inner rotating sleeve (21) rotates under the action of the wrench and drives the rotating linkage member (24) to rotate synchronously; when the rotating linkage member (24) rotates, it drives the locking member (26) to rotate, so that the locking member (26) and the groove (16) are staggered and overlapped on the end surface of the base (10), thereby preventing the push rod (22) from resetting.

2. The rotary cover lock device according to claim 1, characterized in that: The inner rotating sleeve (21) is provided with a wrench hole (215), a limit hole (216) and a central shaft hole (217) which are arranged along the axial direction and pass through two ends of the inner rotating sleeve (21); the limit hole (216) is located between the wrench hole (215) and the central shaft hole (217); the circumferential dimension of the central shaft hole (217) is smaller than the circumferential dimension of the limit hole (216), and a first limit step (218) is formed between the central shaft hole (217) and the limit hole (216); The push rod (22) comprises a long rod portion (222) and a limiting portion (221); the circumferential dimension of the limiting portion (221) is larger than the circumferential dimension of the long rod portion (222) and a second limiting step (223) is formed between the limiting portion (221) and the long rod portion (222); the long rod portion (222) is coaxially arranged in the central axis hole (217) and extends out of the inner rotating sleeve (21); The elastic member (23) is disposed in the wrench hole (215) and the limit hole (216), with one end thereof abutting against the first limit step (218) and the other end thereof abutting against the second limit step (223).

3. The rotary cover lock device according to claim 2, characterized in that: An axial limiter (25) is provided on one end of the long rod portion (222) opposite to the limiting portion (221), and the axial limiter (25) can abut against the end surface of the rotating linkage member (24).

4. The rotary cover lock device according to claim 2, characterized in that: The first travel hole (219) vertically penetrates the central axis hole (217).

5. The rotary cover lock device according to claim 1, characterized in that: The crank slider mechanism (30) comprises: A connecting rod (31), one end of which is rotatably connected to the rotating linkage member (24); The slider (32) is connected to the base (10) in a limiting manner and is rotatably connected to the end of the connecting rod (31).

6. The rotary cover lock device according to claim 5, characterized in that: A slide groove (12) is provided on the base (10), and second travel holes (13) are provided on two opposite side walls of the slide groove (12); The slider (32) is located in the slide groove (12), and a linkage pin (70) is connected to the slider (32). The linkage pin (70) is located transversely in the slide groove (12), and two ends of the linkage pin (70) respectively pass through the second travel hole (13) and are connected to the support (40).

7. The rotary cover lock device according to claim 6, characterized in that: The support (40) comprises support arms (41) arranged at intervals and connecting portions (42) connected to the support arms (41), the support arms (41) being arranged outside two sides of the slide groove (12), the free ends of the support arms (41) being rotatably connected to the base (10), the support arms (41) being provided with third travel holes (412), the third travel holes (412) being located between the free ends of the support arms (41) and the connecting portions (42); Both ends of the linkage pin (70) are respectively connected to the third travel hole (412); When the sliding block (32) moves along the sliding groove (12), the linkage pin (70) can move along the second stroke hole (13) to drive the support (40) to rotate around the base (10).

8. The rotary cover lock device according to claim 7, characterized in that: The locking rod (50) is vertically connected to the connecting portion (42).

Images