Lock, locking mechanism and helicopter observation window

Abstract

The present application relates to a kind of lock, locking mechanism and helicopter observation window, belong to aviation machinery technical field, wherein the lock includes: lock pin;Lock hole;Locking reset spring, for the lock pin has the tendency of reset along the locking direction to locking position movement;Blocking impact piece, provided on the sliding window body, with the lock pin is blocked and the lock pin is passed through the unblocking position of blocking position;Blocking reset spring, for the blocking impact piece has the tendency of reset to the blocking position movement;And impact matching portion, provided on the window frame of the sliding window body.The present application can realize the quick locking of observation window, and lock pin can be partially inserted or completely inserted into lock hole before collision occurs to realize locking, therefore, can prevent the situation of observation window locking failure when operator performs window closing action and force is too large.

Description

TECHNICAL FIELD

[0001] The present application relates to a lock, a locking mechanism and a helicopter observation window, and belongs to the technical field of aviation machinery. BACKGROUND

[0002] The helicopter needs to observe the external environment of the helicopter through the opening of the observation window in various situations, for example, when the weather conditions permit, the helicopter pilot must observe the external environment in order to have enough time to discover and avoid danger; or when searching, rescuing, patrolling and other aviation operations are carried out, the helicopter observer needs to observe the outside world through the observation window and discover the operation object in time.

[0003] The existing helicopter observation window is mostly set as a sliding window structure and is locked by a locking mechanism. When the operator exerts force on the observation window to close the window, if the force is too large, the observation window will collide with the window frame when sliding to the closed position, and after the collision, the observation window is easy to immediately retreat in the opening direction, and at this time, the locking action may not be completed. Therefore, the observation window locking failure may occur. SUMMARY

[0004] The present application aims to provide a lock, a locking mechanism and a helicopter observation window capable of realizing rapid locking, so as to solve the problem of observation window locking failure.

[0005] The present application provides a lock arranged in a locking mechanism of a sliding opening or closing helicopter observation window, for locking connection of a sliding window body of the helicopter observation window and a window frame of the sliding window body, and has the following characteristics: a lock pin arranged on the sliding window body and movable in a locking direction or an unlocking direction; a lock hole arranged on the window frame of the sliding window body, for cooperating with the lock pin to lock or unlock the lock; a locking reset spring for making the lock pin have a tendency to move to a locking position in the locking direction; a blocking impact piece arranged on the sliding window body, having a blocking position allowing the lock pin to be blocked and an unblocking position allowing the lock pin to pass; a blocking reset spring for making the blocking impact piece have a tendency to move to the blocking position; and an impact matching part arranged on the window frame of the sliding window body, for impacting and matching with the blocking impact piece during the sliding closing process of the sliding window body and before the sliding window body slides to the closed position, so as to drive the blocking impact piece to move from the blocking position to the unblocking position.

[0006] In the lock provided by the present application, the blocking impact piece has at least a blocking portion and an impact portion, when the blocking impact piece is in the blocking position, the blocking portion abuts against the locking end of the lock pin, the locking reset spring is compressed to store energy, and the lock is in the unlocked state; when the blocking impact piece is in the unblocking position, the impact portion abuts against the impact matching portion, the blocking reset spring is compressed to store energy, and the lock is in the locked state.

[0007] In the lock provided by the present application, the blocking impact piece has at least a blocking portion and an impact portion, when the blocking impact piece is in the blocking position, the blocking portion abuts against the locking end of the lock pin, the locking reset spring is compressed to store energy, and the lock is in the unlocked state; when the blocking impact piece is in the unblocking position, the impact portion abuts against the impact matching portion, the blocking reset spring is compressed to store energy, and the lock is in the locked state.

[0008] In the lock provided by the present application, the blocking impact piece has at least a blocking portion and an impact portion, when the blocking impact piece is in the blocking position, the blocking portion abuts against the locking end of the lock pin, the locking reset spring is compressed to store energy, and the lock is in the unlocked state; when the blocking impact piece is in the unblocking position, the impact portion abuts against the impact matching portion, the blocking reset spring is compressed to store energy, and the lock is in the locked state.

[0009] The present application provides a locking mechanism arranged in a sliding open or closed helicopter observation window, for locking or unlocking the sliding window body of the helicopter observation window, and has the following features: a lock; an unlocking component for driving the lock pin to move along the unlocking direction to the unlocking position and compressing the locking reset spring to store energy; and a handle component for providing power to the unlocking component, wherein the lock is the lock as described above.

[0010] In the locking mechanism provided by the present application, the unlocking component can further comprise: a rotating shaft penetrating through the sliding window body and being rotatably connected therewith, the first end of the rotating shaft extending to the outdoor side of the sliding window body, and the second end of the rotating shaft extending to the indoor side of the sliding window body; and a swing arm member fixedly arranged on the rotating shaft and having at least a unlocking driving end, the unlocking driving end being drivingly connected with the non-locking end of the lock pin, when the swing arm member rotates along the unlocking direction with the rotating shaft, the swing arm member drives the lock pin to move along the unlocking direction through the unlocking driving end, and the lock pin is pulled out of the lock hole to unlock the lock.

[0011] In the locking mechanism provided by the present application, the handle component can further comprise: an outer handle fixedly arranged on the first end of the rotating shaft; an inner handle arranged in a hinged manner on the second end of the rotating shaft; a hinge shaft fixedly penetrating through the second end of the rotating shaft along the radial direction of the rotating shaft, the inner handle being hinged on the hinge shaft; and a torsional spring sleeved on the hinge shaft, one end of the torsional spring abutting against the inner handle, and the other end of the torsional spring abutting against the rotating shaft, the torsional spring being used for indirectly or directly abutting the inner handle of the free state against the surface of the sliding window body towards the indoor side.

[0012] In the locking mechanism provided by the present application, the locking mechanism can further comprise: a safety component arranged at the inner handle and used for preventing the operator from accidentally touching the outer handle or the inner handle to cause the lock to be unlocked in a non-operation condition, wherein the safety component comprises: a safety member used for forming a blockage on the movement path of the inner handle rotating along the unlocking direction with the rotating shaft; and a first driving member used for driving the safety member to move to a safety position in which the inner handle is blocked or to an unblocking position in which the inner handle is allowed to pass.

[0013] The present application provides a helicopter observation window, having the following features: a sliding window body; a window frame of the sliding window body; a locking mechanism arranged on the sliding window body and the window frame of the sliding window body; and a slide rail mechanism having an upper slide rail and a lower slide rail, the upper and lower ends of the sliding window body being respectively connected with the upper slide rail and the lower slide rail through slide rail seats, wherein the locking mechanism is the locking mechanism as described above.

[0014] In the helicopter observation window provided by the application, the opening anti-retreating mechanism is arranged on the sliding window body and the window frame of the sliding window body, and is used for preventing the sliding window body from retreating along the sliding closing direction after being opened to a specified position.

[0015] Therefore, compared with the prior art, the application has the following advantages:

[0016] According to the lock, the locking mechanism and the helicopter observation window provided by the application, the helicopter observation window comprises a sliding window body, a window frame of the sliding window body, a locking mechanism, a sliding rail mechanism and an opening anti-retreating mechanism. The locking mechanism comprises a lock, an unlocking part, a handle part and a safety part. The lock comprises a lock pin, a lock hole, a locking reset spring, a blocking impact part, a blocking reset spring and an impact matching part. When the sliding window body is slidingly closed along the closing direction, the blocking impact part arranged on the sliding window body moves synchronously with the sliding window body. Before the sliding window body slides to the closed position, the blocking impact part is capable of impacting and matching with the impact matching part, so as to drive the blocking impact part to move from the blocking position to the unblocking position. When the blocking impact part moves to the unblocking position, the lock pin is quickly reset to the locking position along the locking direction under the reset action of the locking reset spring. At this time, the lock pin is quickly inserted into the lock hole to realize the quick locking of the lock, so as to realize the quick locking of the observation window. In addition, the lock pin can be partially inserted or completely inserted into the lock hole to realize the locking before the collision, so that the locking failure of the observation window can be prevented when the operator exerts too much force during the window closing operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the application;

[0018] Figure 2is the main view structural schematic diagram of the whole application;

[0019] Figure 3 is the three-dimensional structural schematic diagram of the locking mechanism in the embodiment of the application;

[0020] Figure 4 is the structural schematic diagram of the lock in the locked state in the embodiment of the application;

[0021] Figure 5 is the structural schematic diagram of the lock in the unlocked state in the embodiment of the application;

[0022] Figure 6 is the structural schematic diagram of the blocking impact piece in the embodiment of the application;

[0023] Figure 7 is the structural schematic diagram of the lock pin and the lock hole in the embodiment of the application;

[0024] Figure 8 is the structural schematic diagram of the moving positioning piece in the embodiment of the application;

[0025] Figure 9 is the structural schematic diagram of the handle part in the embodiment of the application;

[0026] Figure 10 is the structural schematic diagram of the insurance part in the embodiment of the application;

[0027] Figure 11 is the partial structural schematic diagram of the insurance part in the embodiment of the application;

[0028] Figure 12 is the structural schematic diagram of the opening anti-back mechanism in the embodiment of the application;

[0029] Figure 13 is the partial structural schematic diagram of the opening anti-back mechanism in the embodiment of the application.

[0030] The marks in the drawings are described as follows: sliding window body 1; window frame of sliding window body 2; locking mechanism 3; lock 31; lock pin 311; limiting ring 311a; lock hole 312; guide slope 312a; locking reset spring 313; blocking impact piece 314; blocking part 314a and impact part 314b; blocking reset spring 315; impact matching part 316; moving positioning piece 317; stroke groove part 317a; first hole part 317b; second hole part 317c; spring mounting groove 317d; driving rod piece 318; limiting washer 318a; mounting seat 319; lock seat 320; locking part 320a; fixed part 320b; main body part 320c; lock box 323; protruding part 323a; unlocking part 32; rotating shaft 321; swing arm piece 322; unlocking driving end 322a; first swing arm 322b; second swing arm 322c; handle part 33; outer handle 331; inner handle 332; hinged shaft 333; torsional spring 334; safety part 34; safety piece 341; buffer hole 341a; first driving piece 342; position keeping unit 343; positioning part 343a; limiting part 343b; positioning spring 343c; positioning ball 343d; positioning hole 343e; first limiting part 343f; second limiting part 343g; slide rail mechanism 4; upper slide rail 41; lower slide rail 42; slide rail seat 43; fuselage 5; opening anti-retreating mechanism 6; limiting lock hook 61; hook groove part 611; locking rod 62; second driving piece 63; tension spring 64; clamping driving part 65; release driving part 66; linkage shaft 67. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following will make a specific description of the lock, locking mechanism and helicopter observation window of the present application in combination with examples and drawings.

[0032] The present embodiment provides a lock, locking mechanism and helicopter observation window capable of realizing rapid locking.

[0033] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 is a schematic diagram of the overall front view structure of the present application.

[0034] As shown in Figure 1 and Figure 2 , the helicopter observation window of the present embodiment comprises a sliding window body 1, a window frame of the sliding window body 2, a locking mechanism 3, a slide rail mechanism 4 and a fuselage 5. The fuselage 5 is used for mounting the components such as the sliding window body 1, the locking mechanism 3 and the slide rail mechanism 4. The fuselage 5 has a window corresponding to the sliding window body 1, and the sliding window body 1 is used for opening or closing the window. The part of the fuselage 5 located outside the window constitutes the window frame of the sliding window body 2. The sliding window body 1 is mounted on the fuselage 5 through the slide rail mechanism 4, and the locking mechanism 3 is used for locking or unlocking the sliding window body 1 of the helicopter observation window.

[0035] Figure 3 is a perspective view of the locking mechanism in the embodiment of the application; Figure 4 is a structural view of the lock in the locked state in the embodiment of the application; Figure 5 is a structural view of the lock in the unlocked state in the embodiment of the application.

[0036] As shown in Figure 3 , the locking mechanism 3 in the embodiment includes a lock 31, an unlocking component 32, a handle component 33, and a safety component 34.

[0037] As shown in Figure 4 and Figure 5 , the lock 31 is used to lock the sliding window body 1 of the helicopter observation window and the window frame 2 of the sliding window body. It includes a lock pin 311, a lock hole 312, a locking reset spring 313, a blocking impact piece 314, a blocking reset spring 315, and an impact matching part 316. The lock pin 311 is arranged on the sliding window body 1 and can move in the locking direction or the unlocking direction. The lock hole 312 is arranged on the window frame 2 of the sliding window body and is used to cooperate with the lock pin 311 to lock or unlock the lock 31. The locking reset spring 313 is used to make the lock pin 311 in the non-locking position have a tendency to reset in the locking direction to the locking position, that is, after the lock pin 311 is unblocked, it can quickly reset to the locking position, that is, the lock pin 311 is quickly inserted into the lock hole 312 to achieve locking. The blocking impact piece 314 is arranged on the sliding window body 1 and has a blocking position where the lock pin 311 is blocked and an unblocking position where the lock pin 311 passes through. The blocking reset spring 315 is used to make the blocking impact piece 314 in the non-blocking position have a tendency to reset to the blocking position. The impact matching part 316 is arranged on the window frame 2 of the sliding window body and is used to impact and match with the blocking impact piece 314 during the sliding closing process of the sliding window body 1 and before the sliding window body 1 slides to the closed position, so as to drive the blocking impact piece 314 to move from the blocking position to the unblocking position.

[0038] It can be understood that when the sliding window 1 slides in the closing direction during the closing process, the blocking impact piece 314 arranged on the sliding window 1 moves synchronously with the sliding window 1, and before the sliding window 1 slides to the closed position (the sliding window 1 is in the fully closed state), the blocking impact piece 314 can be in impact cooperation with the impact cooperation part 316, so as to drive the blocking impact piece 314 to move from the blocking position to the unblocking position, when the blocking impact piece 314 moves to the unblocking position, the locking pin 311 is quickly reset to the locking position in the locking direction under the reset action of the locking reset spring 313, at this time, the locking pin 311 is quickly inserted into the lock hole 312 to realize the quick locking of the lock 31, so that the quick locking of the observation window can be realized, and the locking pin 311 can be partially inserted or completely inserted into the lock hole 312 to realize locking before the collision occurs (the sliding window 1 can collide with the window frame 2 of the sliding window only when it slides to the closed position), so that the failure of the observation window locking can be prevented when the operator exerts excessive force during the window closing operation.

[0039] In addition, when the locking pin 311 moves from the locking position to the unlocking position in the unlocking direction, the locking pin 311 is pulled out of the lock hole 312 at the same time, at this time, the operator can exert force on the sliding window 1 to perform the window opening operation, when the sliding window 1 slides in the opening direction during the opening process, the locking reset spring 313 gradually recovers the deformation and pushes the blocking impact piece 314 to move to the blocking position, when the blocking impact piece 314 just comes out of contact with the impact cooperation part 316, the blocking impact piece 314 just moves to the blocking position, so as to block the locking pin 311 in the unlocking position, so as to facilitate the next window closing operation.

[0040] Figure 6 It is a structure diagram of the blocking impact piece in the embodiment of the application.

[0041] As shown in Figure 4 and Figure 6 In the embodiment, the blocking impact piece 314 has a blocking part 314a and an impact part 314b, when the blocking impact piece 314 is in the blocking position, the blocking part 314a abuts against the locking end of the locking pin 311, the locking reset spring 313 is compressed and stored, and the lock 31 is in the unlocked state.

[0042] It can be understood that when the locking pin 311 moves to the unlocking position in the unlocking direction, at this time, the operator can perform the window opening operation, after the sliding window 1 is opened, the blocking part 314a of the blocking impact piece 314 abuts against the locking end of the locking pin 311 to block the locking pin 311, and the locking reset spring 313 is compressed and stored, when the blocking of the locking pin 311 is removed, the locking pin 311 can quickly move to the locking position under the action of the locking reset spring 313, so as to realize the quick locking.

[0043] AsFigure 5 and Figure 6 As shown, when the blocking impact member 314 is in the released blocking position, the impact part 314b abuts against the impact mating part 316, the blocking reset spring 315 is compressed and stored, and the lock 31 is in the locked state.

[0044] Understandably, during the closing process of the sliding window 1, when the impact engagement causes the blocking impact member 314 to move to the unblocking position, the blocking of the locking pin 311 is removed. Under the action of the locking return spring 313, the locking pin 311 quickly moves back to the locked position to achieve rapid locking. After locking, the impact part 314b abuts against the impact engagement part 316, and the blocking return spring 315 is compressed and stored. When the sliding window 1 is opened, under the action of the blocking return spring 315, the blocking part 314a of the blocking impact member 314 abuts against the locking end of the locking pin 311 to block the locking pin 311.

[0045] like Figure 5 As shown, in this embodiment, the locking pin 311 is located at the bottom of the sliding window 1, and the lock hole 312 is located at the bottom of the window frame 2 of the sliding window and below the locking pin 311. Understandably, the lock 31 is locked or unlocked by the cooperation between the locking pin 311 and the lock hole 312. When the locking pin 311 is inserted into the lock hole 312, the lock 31 is in a locked state; when the locking pin 311 is pulled out of the lock hole 312, the lock 31 is in an unlocked state. Therefore, when the locking pin 311 is inserted into the lock hole 312, the sliding window 1 is locked to the window frame. Furthermore, the cross-sectional shapes of the locking pin 311 and the lock hole 312 are matched; the locking pin 311 is cylindrical, and the diameter of the lock hole 312 is slightly larger than the diameter of the locking pin 311. The end of the locking pin 311 that cooperates with the lock hole 312 is the locking end, and the other end opposite to this end is the unlocked end.

[0046] like Figure 4 As shown, in this embodiment, the moving direction of the locking pin 311 is consistent with its axial direction, which is consistent with the height direction of the sliding window 1. Figure 3 As shown, the direction indicated by D1 is the locking direction, and the opposite direction of D1 is the unlocking direction. When the sliding window 1 is in the closed position, the locking pin 311 is fully inserted into the lock hole 312, and in this state, the axial direction of the locking pin 311 is approximately coincident with the axial direction of the lock hole 312.

[0047] Figure 7 This is a schematic diagram of the locking pin and lock hole in an embodiment of the present invention.

[0048] like Figure 5 and Figure 7As shown, in the embodiment, the locking end of the locking pin 311 is hemispherical, and the locking hole 312 has an outwardly expanding guide slope 312a at one end of the locking end of the locking pin 311, the guide slope 312a is annular, the outer end of the guide slope 312a (the guide slope 312a constitutes one end of the end of the locking hole 312) has a larger diameter than the inner end, and the diameter of the inner end of the guide slope 312a is consistent with the diameter of the rest of the locking hole 312. It can be understood that, during the sliding of the sliding window body 1 to the closed position, when the center position of the locking end of the locking pin 311 is located directly above the inner side area of the guide slope 312a, the locking end of the locking pin 311 can be pre-entered the area inside the guide slope 312a under the action of the locking reset spring 313 and abut against the guide slope 312a, and after the locking end of the locking pin 311 abuts against the guide slope 312a, the two cooperate to generate an auxiliary force that is beneficial to the insertion of the locking end of the locking pin 311 into the locking hole 312, so as to ensure that part of the locking end of the locking pin 311 has been inserted into the locking hole 312 before the collision; in addition, even if the sliding window body 1 retreats a certain distance after the collision between the sliding window body 1 and the window frame 2 of the sliding window body, as long as the center position of the locking end of the locking pin 311 is still located directly above the inner side area of the guide slope 312a, the locking end of the locking pin 311 can enter the area inside the guide slope 312a and abut against the guide slope 312a, at this time, the locking end of the locking pin 311 can be driven to be completely inserted into the locking hole 312 by the locking end of the locking pin 311 and the guide slope 312a to achieve locking, thereby further preventing the failure of locking due to the collision.

[0049] As shown in the figure, Figure 6 As shown in the figure, in the embodiment, the blocking and impacting piece 314 is a square structure, two adjacent surfaces thereof constitute a blocking part 314a and an impacting part 314b respectively, and the blocking part 314a and the impacting part 314b are two mutually perpendicular planes.

[0050] As shown in the figure, Figure 5 As shown in the figure, the lock 31 further includes a moving positioning piece 317 and a driving rod piece 318. The moving positioning piece 317 is fixedly arranged on the sliding window body 1 and is used to position the moving direction of the locking pin 311 and the blocking and impacting piece 314, so that the locking pin 311 can be accurately inserted into or pulled out of the locking hole 312, and the blocking and impacting piece 314 can be accurately moved between the blocking position and the unblocking position. The driving rod piece 318 is slidingly arranged on the sliding window body 1 and is used to drive the blocking and impacting piece 314 to move between the blocking position and the unblocking position. In the embodiment, the axis direction of the driving rod piece 318 is consistent with the sliding direction of the sliding window body 1, and is perpendicular to the axis direction of the locking pin 311.

[0051] Figure 8 It is the structure diagram of the moving positioning piece in the embodiment.

[0052] As shown in Figure 5 and Figure 8 , the moving positioning member 317 has a stroke groove portion 317a, a first hole portion 317b and a second hole portion 317c. The stroke groove portion 317a is used for accommodating the blocking impact member 314 and providing moving space for the blocking impact member 314, and has an opening on the side opposite to the impact portion 314b, so that the impact fitting portion 316 enters the stroke groove portion 317a and impacts with the impact portion 314b. In the embodiment, the inner shape of the stroke groove portion 317a matches the outer shape of the blocking impact member 314. The first hole portion 317b communicates the stroke groove portion 317a along a first direction, the driving rod member 318 slides through the first hole portion 317b and extends into the stroke groove portion 317a, and is fixedly connected with the end of the blocking impact member 314 opposite to the impact portion 314b. The second hole portion 317c penetrates the stroke groove portion 317a along a second direction, and the lock pin 311 slides into the second hole portion 317c. The first direction and the second direction are perpendicular to each other, the first direction is consistent with the sliding direction of the sliding window body 1, and the second direction is consistent with the height direction of the sliding window body 1.

[0053] As shown in Figure 5 and Figure 8 , the moving positioning member 317 further has a spring mounting groove 317d above the stroke groove portion 317a, the second hole portion 317c penetrates the spring mounting groove 317d, and the middle part of the lock pin 311 has a limiting ring 311a. In the embodiment, the locking reset spring 313 is sleeved on the lock pin 311 and located in the spring mounting groove 317d, one end of the locking reset spring 313 abuts against the upper end surface of the limiting ring 311a, and the other end abuts against the upper end wall of the spring mounting groove 317d. It can be understood that when the lock pin 311 moves along the unlocking direction, the locking reset spring 313 is compressed to store power, so that the lock pin 311 has a tendency to reset and move along the locking direction to the locking position. When the lock 31 is in the unlocking state, the lower end surface of the limiting ring 311a abuts against the lower end wall of the spring mounting groove 317d to limit the depth of the lock pin 311 inserted into the lock hole 312. When the lock 31 is in the locking state, the locking end of the lock pin 311 extends from the lower end of the second hole portion 317c.

[0054] As shown in Figure 5As shown, the lock 31 further comprises a mounting seat 319 located at one lateral side of the moving positioning member 317, and the driving rod member 318 is slidably arranged through the mounting seat 319 at one end outside the stroke groove 317a. In the embodiment, the blocking reset spring 315 is sleeved on the driving rod member 318 and located between the mounting seat 319 and the moving positioning member 317, one end of which is in abutment with the surface of the driving rod member 318, and the other end is in abutment with the side surface of the mounting seat 319. It can be understood that when the blocking impact member 314 is in impact cooperation with the impact cooperation portion 316, the blocking reset spring 315 is compressed to store energy, so that the blocking impact member 314 has a tendency to reset to the blocking position. And the end of the driving rod member 318 slidably arranged through the mounting seat 319 has a limiting pad 318a for preventing the end of the driving rod member 318 from sliding out of the mounting seat 319.

[0055] As shown in Figure 5 , the lock 31 further comprises a lock seat 320 fixedly arranged on the window frame 2 of the sliding window body 1 and having a locking portion 320a extending to the path of displacement of the blocking impact member 314 when the sliding window body 1 is slidingly closed, and the lock hole 312 is arranged on the locking portion 320a, and the side portion of the locking portion 320a opposite to the impact portion 314b constitutes the impact cooperation portion 316. It can be understood that during the sliding closing of the sliding window body 1, the impact portion 314b of the blocking impact member 314 is in impact cooperation with the locking portion 320a, thereby pushing the blocking impact member 314 to move from the blocking position to the unblocking position, and when the blocking impact member 314 moves to the unblocking position, the lock pin 311 is inserted into the lock hole 312 to achieve locking.

[0056] As shown in Figure 4 and Figure 5 , the side of the stroke groove 317a opposite to the sliding window body 1 also has an opening for allowing the locking portion 320a to pass. When the lock 31 is in the locked state, the locking portion 320a extends into the stroke groove 317a from the side of the opening, and the position of the locking portion 320a in the height of the sliding window body 1 is aligned with the position of the stroke groove 317a in the height of the sliding window body 1, and the locking portion 320a itself has a certain thickness which is smaller than the height of the stroke groove 317a itself. It can be understood that during the sliding closing of the sliding window body 1, the locking portion 320a can enter the stroke groove 317a and impact cooperate with the impact portion 314b of the blocking impact member 314, and when the sliding window body 1 slides to the closed position, the axis of the lock hole 312 is substantially coincided with the axis of the second hole portion 317c.

[0057] As shown in Figure 4 and Figure 5As shown, the lock seat 320 comprises a fixed part 320b and a main part 320c. The fixed part 320b is movably fixed on the window frame 2 of the sliding window body, and the main part 320c is movably fixed on the fixed part 320b. The upper end of the main part 320c constitutes the locking part 320a. The fixed part 320b can be adjusted in position along the sliding direction of the sliding window body 1, and the main part 320c can be adjusted in position along the direction perpendicular to the sliding direction of the sliding window body 1, and the adjustment amount in both directions is ±3mm. Understandably, after the position adjustment of the fixed part 320b and the main part 320c, the position of the lock hole 312 relative to the lock pin 311 can be changed, so as to ensure the accurate cooperation between the lock hole 312 and the lock pin 311.

[0058] As shown in Figure 4 and Figure 5 As shown, the lock 31 further comprises a lock box 323 fixed on the surface of the sliding window body 1 towards the indoor side, for accommodating other components in the lock 31 except the lock seat 320, and the moving positioning member 317 and the mounting seat 319 are fixedly arranged in the lock box 323, thereby being indirectly fixedly arranged on the sliding window body 1.

[0059] As shown in Figure 5 The unlocking component 32 is used to drive the lock pin 311 to move along the unlocking direction to the unlocking position, and make the locking reset spring 313 compress and store force. The unlocking component 32 comprises a rotating shaft 321 and a swing arm member 322. The rotating shaft 321 penetrates the sliding window body 1 and forms a rotating connection with the sliding window body 1, and the first end thereof extends to the outdoor side of the sliding window body 1, and the second end thereof extends to the indoor side of the sliding window body 1. The swing arm member 322 is fixedly arranged on the rotating shaft 321, and has an unlocking driving end 322a drivingly connected with the non-locking end of the lock pin 311. As shown in Figure 3 As shown, the direction indicated by D2 is the unlocking direction. When the swing arm member 322 rotates along the unlocking direction with the rotating shaft 321, the swing arm member 322 drives the lock pin 311 to move along the unlocking direction through the unlocking driving end 322a, and pulls out from the lock hole 312 to unlock the lock 31.

[0060] As shown in Figure 5 In this embodiment, the swing arm member 322 has a first swing arm 322b extending outwardly from the rotation center of the swing arm member 322, and the extension end of the first swing arm 322b constitutes the unlocking driving end 322a.

[0061] Figure 9 is a structure schematic view of the handle component in the embodiment of the present application.

[0062] As shown in Figure 5 and Figure 9The handle member 33 is used to provide power for the unlocking member 32. The handle member 33 comprises an outer handle 331, an inner handle 332, a hinge shaft 333 and a torsion spring 334. The outer handle 331 is fixedly arranged at the first end of the rotating shaft 321. The inner handle 332 is arranged in a hinged manner at the second end of the rotating shaft 321. The hinge shaft 333 is fixedly arranged along the radial direction of the rotating shaft 321 and penetrates the second end of the rotating shaft 321, and the inner handle 332 is hinged to the hinge shaft 333. The torsion spring 334 is sleeved on the hinge shaft 333, one end of the torsion spring 334 abuts against the inner handle 332, and the other end of the torsion spring 334 abuts against the rotating shaft 321, and is used to indirectly or directly make the inner handle 332 in a free state abut against the surface of the sliding window body 1 facing the indoor side. In the embodiment, the rotating shaft 321 penetrates the sliding window body 1 and the lock box 323 in sequence and is rotationally connected with the sliding window body 1 and the lock box 323, so as to directly make the inner handle 332 in a free state abut against the surface of the lock box 323 facing the indoor side.

[0063] It can be understood that when the operator applies force to the outer handle 331 or the inner handle 332 and rotates the outer handle 331 or the inner handle 332, the swing arm 322 can be driven to rotate in an unlocking direction by the rotating shaft 321, so as to provide power for the unlocking member 32 to unlock the lock 31, and then the sliding window body 1 can be opened from the outside or the inside. Moreover, the inner handle 332 indirectly or directly makes the inner handle 332 in a free state abut against the surface of the sliding window body 1 facing the indoor side under the action of the torsion spring 334, so that the inner handle 332 is more easy to operate, and in a non-use state, the inner handle 332 can be automatically folded, occupies less space, and can effectively prevent the in-cabin personnel from being mistaken. It should be noted that when the inner handle 332 is operated to unlock from the inside, the inner handle 332 needs to be bent to a use state first.

[0064] Figure 10 FIG. 4 is a structural schematic view of the safety member in the embodiment of the present application.

[0065] As shown in FIG. 4, the safety member comprises a safety box 41, a safety lever 42 and a safety spring 43. The safety box 41 is arranged on the sliding window body 1 and is used to accommodate the safety lever 42. The safety lever 42 is arranged in the safety box 41 and is used to provide power for the unlocking member 32. The safety spring 43 is arranged in the safety box 41 and is used to provide power for the safety lever 42. Figure 9 and Figure 10As shown, the safety component 34 is arranged at the inner handle 332 for preventing the operator from accidentally touching the outer handle 331 or the inner handle 332 in a non-operation condition to cause the lock 31 to be opened by mistake. The safety component 34 comprises a safety piece 341 and a first driving piece 342. The safety piece 341 is arranged to form an obstruction in the movement path of the inner handle 332 when the inner handle 332 rotates with the rotating shaft 321 in the unlocking direction. The first driving piece 342 is arranged to drive the safety piece 341 to move to the safety position where the inner handle 332 is obstructed or to the disarmed position where the inner handle 332 is not obstructed. It can be understood that when the safety piece 341 is in the safety position, the safety piece 341 can form an obstruction in the movement path of the inner handle 332 when the inner handle 332 rotates with the rotating shaft 321 in the unlocking direction, and the inner handle 332 is linked with the outer handle 331 under the action of the rotating shaft 321, at this time, the inner handle 332 or the outer handle 331 cannot be operated to unlock the lock 31, and the window opening action cannot be realized accordingly; when the safety piece 341 is in the disarmed position, the obstruction of the inner handle 332 is removed, at this time, the inner handle 332 or the outer handle 331 can be operated to unlock the lock 31, and the window opening action can be realized accordingly. Therefore, before the window opening action is performed, the inner handle 332 needs to be moved to the use state first, and then the first driving piece 342 is used to drive the safety piece 341 to move to the disarmed position.

[0066] As shown in the drawings, Figure 10 In this embodiment, the inner handle 332 has a ring structure, the safety piece 341 is a safety pin, and the first driving piece 342 is an eccentric wheel. The first driving piece 342 is arranged to rotate on the surface of the lock box 323 facing the indoor side, and the safety piece 341 is fixedly arranged at the eccentric end of the first driving piece 342 and has an axis direction perpendicular to the surface direction of the lock box 323. It can be understood that when the first driving piece 342 rotates, the eccentric end thereof moves in a circular motion, thereby causing the safety piece 341 to move in a circular motion, so that the safety piece 341 can rotate between the safety position and the disarmed position. When in the safety position, the safety piece 341 is located at the inner ring side of the inner handle 332 and the circumferential surface thereof abuts against the inner ring of the inner handle 332; when in the disarmed position, the safety piece 341 is located at the outer ring side of the inner handle 332.

[0067] As shown in the drawings, Figure 9 In this embodiment, the surface of the lock box 323 facing the indoor side has a protrusion 323a, and the part of the inner handle 332 in the free state abuts against the surface of the protrusion 323a, so that the area of the surface of the lock box 323 in contact with the inner handle 332 can be reduced, thereby reducing the frictional resistance and being more conducive to the synchronous movement of the inner handle 332 with the rotating shaft 321, so that the external force required for unlocking can be reduced.

[0068] Figure 11 FIG. 4 is a partial structural schematic view of the position maintaining unit in the embodiment of the present application.

[0069] AsFigure 10 and Figure 11 As shown in FIG. 3, the safety component 34 further comprises a position holding unit 343, which comprises a positioning portion 343a and a limiting portion 343b.

[0070] The positioning portion 343a comprises a positioning spring 343c, a positioning ball 343d and positioning holes 343e. The safety component 341 has a buffer hole 341a opened at one end thereof facing the surface of the lock box 323. The positioning spring 343c is arranged in the buffer hole 341a. The positioning ball 343d is arranged at the opening end of the buffer hole 341a and abuts against the positioning spring 343c. The positioning holes 343e are two in number and are arranged at intervals on the surface of the lock box 323 and are arranged at positions corresponding to the safety position and the unsafety position respectively. It can be understood that when the positioning ball 343d is clamped in one of the positioning holes 343e, the safety component 341 can be kept at the current position, so that the safety component 341 can be kept at the safety position or the unsafety position. Moreover, when it is necessary to adjust the position of the safety component 341, the positioning ball 343d can be disengaged from the positioning hole 343e by applying force to the safety component 341. In the embodiment, the diameter of the positioning hole 343e is smaller than the diameter of the positioning ball 343d, so that part of the positioning ball 343d can enter the positioning hole 343e.

[0071] The limiting portion 343b is arranged on the side surface of the protruding portion 323a. The limiting portion 343b comprises a first limiting portion 343f and a second limiting portion 343g. When the safety component 341 abuts against the first limiting portion 343f, the safety component 341 is at the safety position. When the safety component 341 abuts against the second limiting portion 343g, the safety component 341 is at the unsafety position. It can be understood that when the position of the safety component 341 is adjusted, the safety component 341 can be accurately adjusted to the safety position or the unsafety position by the first limiting portion 343f and the second limiting portion 343g, so that the positioning ball 343d can be accurately clamped in the corresponding positioning hole 343e, and thus the safety component 341 can be kept at the adjusted position, which is easy for the operator to adjust the position of the safety component 341.

[0072] As shown in FIG. 4, the sliding rail mechanism 4 has an upper sliding rail 41 and a lower sliding rail 42. The upper and lower ends of the sliding window body 1 are respectively connected to the upper sliding rail 41 and the lower sliding rail 42 through sliding rail seats 43. Figure 2 As shown in FIG. 4, the sliding rail mechanism 4 has an upper sliding rail 41 and a lower sliding rail 42. The upper and lower ends of the sliding window body 1 are respectively connected to the upper sliding rail 41 and the lower sliding rail 42 through sliding rail seats 43.

[0073] In the embodiment, the number of slide rail seats 43 is three, two of which are arranged on both sides of the upper end of the sliding window body 1, and the other is arranged on one side of the lower end of the sliding window body 1. The locking mechanism 3 is arranged on the other side of the lower end of the sliding window body 1.

[0074] Figure 12 is a structural schematic diagram of the opening anti-retreating mechanism in the embodiment of the application. Figure 13 is a partial structural schematic diagram of the opening anti-retreating mechanism in the embodiment of the application.

[0075] As shown in Figure 12 and Figure 13 , the helicopter observation window of the embodiment further comprises an opening anti-retreating mechanism 6 arranged on the sliding window body 1 and the window frame 2 of the sliding window body, which is used to prevent the sliding window body 1 from retreating in the sliding closing direction after being slid open to a specified position. The opening anti-retreating mechanism 6 comprises a limiting lock hook 61, a locking rod 62, a second driving member 63, a tension spring 64, a clamping driving part 65, and a releasing driving part 66. The limiting lock hook 61 is rotationally arranged on the sliding window body 1. The locking rod 62 is fixedly arranged on the window frame 2 of the sliding window body, and is used to be clamped with the limiting lock hook 61. The second driving member 63 is linked with the limiting lock hook 61, and is used to drive the limiting lock hook 61 to rotate to a limiting position clamped with the locking rod 62 or a releasing limiting position disengaged from the clamping with the locking rod 62. One end of the tension spring 64 is buckled with the second driving member 63, and the other end is buckled with the sliding window body 1, which is used to make the limiting lock hook 61 have a tendency to rotate to the limiting position. The clamping driving part 65 is arranged on the limiting lock hook 61, which is used to cooperate with the locking rod 62 in the process of sliding the sliding window body 1 open, and drive the limiting lock hook 61 to rotate from the limiting position to the releasing limiting position. The releasing driving part 66 is arranged on the swing arm member 322, which is used to cooperate with the second driving member 63 when the swing arm member 322 continues to rotate relative to the unlocking position in the unlocking direction, and drive the limiting lock hook 61 to rotate from the limiting position to the releasing limiting position.

[0076] It can be understood that when the sliding window 1 is slidingly opened to the specified position, the limiting lock hook 61 provided on the sliding window 1 moves synchronously with the sliding window 1, and in this process, the distance between the limiting lock hook 61 and the locking rod 62 gradually shortens. When the limiting lock hook 61 contacts the locking rod 62, the clamping driving part 65 on the limiting lock hook 61 can cooperate with the locking rod 62 and drive the limiting lock hook 61 to rotate from the limiting position to the position where the limiting is released, so that the clamping driving part 65 of the limiting lock hook 61 can gradually pass the locking rod 62. When the clamping driving part 65 of the limiting lock hook 61 completely passes the locking rod 62, the limiting lock hook 61 rotates to the limiting position under the action of the tension spring 64 and is clamped and cooperated with the locking rod 62 to achieve limiting, so as to achieve the limiting of the sliding window 1 in the sliding closing direction, thereby preventing the sliding window 1 from retreating in the sliding closing direction. In addition, the cooperation of the limiting structures on the upper sliding rail 41 and the lower sliding rail 42 can make the sliding window 1 remain at the current opening position, so that the personnel in the machine can observe the external environment through the observation window. When it is necessary to close the sliding window 1, the operator only needs to exert force on the outer handle 331 or the inner handle 332 to make the swing arm 322 continue to rotate in the unlocking direction. In the rotating process, the swing arm 322 is cooperated with the second driving part 63 through the releasing driving part 66 and drives the limiting lock hook 61 to rotate from the limiting position to the position where the limiting is released, so that the limiting lock hook 61 is disengaged from the clamping of the locking rod 62 to release the limiting. At this time, the sliding window 1 can be closed by pushing it in the sliding closing direction. In addition, since the locking end of the locking pin 311 abuts against the blocking part 314a after the sliding window 1 is opened, the swing arm 322 can only continue to rotate in the unlocking direction in this state, which is more convenient for the operator to exert force on the outer handle 331 or the inner handle 332 to release the limiting.

[0077] As shown in Figure 12 and Figure 13 In the present embodiment, the limiting lock hook 61 is rotatably arranged on the surface of the lock box 323 towards the indoor side through the linkage shaft 67. The linkage shaft 67 extends into the inside of the lock box 323 and is rotatably connected therewith. The limiting lock hook 61 is fixedly arranged on one end of the linkage shaft 67 outside the lock box 323. The limiting lock hook 61 has a hook groove part 611 for clamping cooperation with the locking rod 62. It can be understood that when clamping cooperation, the side wall of the hook groove part 611 abuts against the circumferential surface of the locking rod 62.

[0078] As shown in Figure 12 and Figure 13As shown in the drawings, in the present embodiment, the locking rod 62 is arranged on the path of the displacement of the limiting hook 61 when the sliding window body 1 is opened by sliding, and the position of the hook groove part 611 of the limiting hook 61 in the height direction of the sliding window body 1 is consistent with the position of the locking rod 62 in the height direction of the sliding window body 1. It can be understood that the limiting hook 61 can be accurately matched with the locking rod 62 during the opening of the sliding window body 1 by sliding, and the hook groove part 611 of the limiting hook 61 can be accurately matched with the locking rod 62.

[0079] As shown in the drawings, Figure 12 and Figure 13 As shown in the drawings, in the present embodiment, the clamping driving part 65 is arranged at one end of the limiting hook 61 facing the locking rod 62, the clamping driving part 65 is a slope, and the hook groove part 611 of the limiting hook 61 is arranged at the end of the clamping driving part 65 away from the locking rod 62. It can be understood that the clamping driving part 65 can be matched with the locking rod 62 during the opening of the sliding window body 1 by sliding, and can drive the limiting hook 61 to rotate from the limiting position to the unlimiting position, and when the clamping driving part 65 of the limiting hook 61 completely passes the locking rod 62, the limiting hook 61 can be rotated to the limiting position under the action of the tension spring 64 and clamped with the locking rod 62 through the hook groove part 611 to achieve limiting.

[0080] As shown in the drawings, Figure 12 and Figure 13 As shown in the drawings, in the present embodiment, the second driving part 63 is fixedly arranged on the part of the linkage shaft 67 inside the lock box 323, so as to be linked with the limiting hook 61. And the second driving part 63 has an extension end abutting against the mounting seat 319. It can be understood that since the tension spring 64 will exert a pulling force on the second driving part 63, the abutment of the extension end against the mounting seat 319 can achieve the limiting of the second driving part 63, so that the limiting hook 61 in the free state is kept in the limiting position.

[0081] As shown in the drawings, Figure 12 and Figure 13 As shown in the drawings, in the present embodiment, the swing arm part 322 further has a second swing arm 322c extending outward from the rotation center of the swing arm part 322 and forming an obtuse angle with the first swing arm 322b, and the extension end of the second swing arm 322c forms the unlimiting driving part 66. When the swing arm part 322 rotates to the unlocking position in the unlocking direction, the unlimiting driving part 66 of the second swing arm 322c abuts against the upper end of the second driving part 63, and when the swing arm part 322 continues to rotate in the unlocking direction, the unlimiting driving part 66 of the second swing arm 322c can drive the limiting hook 61 to rotate from the limiting position to the unlimiting position through the second driving part 63.

[0082] Effects of the embodiment

[0083] According to the lock, the locking mechanism and the helicopter observation window, the helicopter observation window comprises a sliding window body, a window frame of the sliding window body, a locking mechanism, a sliding rail mechanism, a fuselage and an opening anti-back mechanism. The locking mechanism comprises a lock, an unlocking part, a handle part and a safety part. The lock comprises a lock pin, a lock hole, a locking reset spring, a blocking impact part, a blocking reset spring and an impact matching part. When the sliding window body slides in the closing direction, the blocking impact part on the sliding window body moves synchronously with the sliding window body. Before the sliding window body slides to the closed position, the blocking impact part impacts the impact matching part, so as to drive the blocking impact part to move from the blocking position to the unblocking position. When the blocking impact part moves to the unblocking position, the lock pin moves to the locking position under the reset action of the locking reset spring. At this time, the lock pin is quickly inserted into the lock hole to realize the quick locking of the lock, so as to realize the quick locking of the observation window. The lock pin can be partially inserted or completely inserted into the lock hole to realize the locking before the collision, so that the locking failure of the observation window can be prevented when the operator exerts too much force during the window closing operation.

[0084] The above embodiments are only the preferred embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A lock, disposed in a locking mechanism of a sliding openable or closed helicopter observation window, for locking the sliding window body of the helicopter observation window to the window frame of the sliding window body, characterized in that, include: A locking pin (311) is provided on the sliding window (1) and can move in the locking or unlocking direction; A keyhole (312) is provided on the window frame (2) of the sliding window and is used to engage with the locking pin (311) to lock or unlock the lock (31); A locking return spring (313) is used to cause the locking pin (311) to tend to move back to the locking position along the locking direction; An impact blocking member (314) is provided on the sliding window (1) and has a blocking position that blocks the locking pin (311) and a release position that allows the locking pin (311) to pass through. A blocking return spring (315) is used to give the blocking impact member (314) a tendency to move back to the blocking position; as well as The impact engagement part (316) is provided on the window frame (2) of the sliding window and is used to engage with the blocking impact member (314) during the sliding closing process of the sliding window (1) and before the sliding window (1) slides to the closed position, so as to drive the blocking impact member (314) to move from the blocking position to the unblocking position. The impact-blocking member (314) has at least a blocking part (314a) and an impact part (314b). When the blocking impact member (314) is in the blocking position, the blocking part (314a) abuts against the locking end of the locking pin (311), the locking return spring (313) is compressed and stored, and the lock (31) is in the unlocked state. When the blocking impact member (314) is in the released blocking position, the impact part (314b) abuts against the impact mating part (316), the blocking reset spring (315) is compressed and stored, and the lock (31) is in the locked state. It also includes a lock base (320), which is fixedly mounted on the window frame (2) of the sliding window and has a locking part (320a) that extends to the path of the impact blocking member (314) as the sliding window (1) slides and closes. The lock hole (312) is provided on the locking part (320a). The side portion of the locking portion (320a) opposite to the impact portion (314b) constitutes the impact mating portion (316).

2. The lock according to claim 1, characterized in that, Also includes: A movable positioning component (317) is fixedly mounted on the sliding window (1) and is used to position the moving direction of the locking pin (311) and the impact blocking component (314); as well as A drive rod (318) is slidably mounted on the sliding window (1) for driving the blocking impact member (314) to move between the blocking position and the releasing position. The movable positioning element (317) has the following features: The travel groove (317a) is used to accommodate the blocking impact member (314) and provide it with a space for movement. It has an opening on at least one side opposite to the impact member (314b) so that the impact mating part (316) can enter the travel groove (317a) and impact the impact member (314b). The first hole (317b) communicates with the travel groove (317a) along a first direction; and The second hole (317c) penetrates the travel groove (317a) along the second direction; The driving rod (318) slides through the first hole (317b) and extends into the travel groove (317a), and is fixedly connected to one end of the impact blocking member (314) opposite to the impact part (314b). The locking pin (311) slides into the second hole (317c). The first direction and the second direction are perpendicular to each other. The blocking reset spring (315) is sleeved on the driving rod (318), with one end abutting against the surface of the driving rod (318) and the other end abutting against the sliding window (1).

3. A locking mechanism, disposed in a sliding openable or closed helicopter observation window, for locking or unlocking the sliding window of the helicopter observation window, characterized in that, include: Locks (31); as well as The unlocking component (32) is used to drive the locking pin (311) to move towards the unlocking position along the unlocking direction and to compress and store the locking return spring (313); as well as A handle component (33) is used to provide power to the unlocking component (32). Wherein, the lock (31) is the lock as described in claim 1 or 2.

4. The locking mechanism according to claim 3, Its features are: The unlocking component (32) includes: A pivot (321) passes through and is rotatably connected to the sliding window (1), with its first end extending to the outdoor side of the sliding window (1) and its second end extending to the indoor side of the sliding window (1); and The swing arm (322) is fixedly mounted on the rotating shaft (321) and has at least an unlocking drive end (322a), which is motive-connected to the non-locking end of the locking pin (311). When the swing arm (322) rotates along the unlocking direction with the pivot (321), the swing arm (322) drives the locking pin (311) to move along the unlocking direction through the unlocking drive end (322a) and pull it out from the lock hole (312) to unlock the lock (31).

5. The locking mechanism according to claim 4, Its features are: The handle component (33) includes: An outer handle (331) is fixedly mounted at the first end of the rotating shaft (321); An inner handle (332) is hinged to the second end of the pivot (321); A hinge shaft (333) is fixedly inserted through the second end of the rotating shaft (321) radially along the shaft (321), and the inner handle (332) is hinged to the hinge shaft (333); and A torsion spring (334) is sleeved on the hinge shaft (333), with one end abutting against the inner handle (332) and the other end abutting against the rotating shaft (321), for making the inner handle (332) in the free state indirectly or directly adhere to the surface of the sliding window (1) facing the interior.

6. The locking mechanism according to claim 5, characterized in that, Also includes: A safety component (34) is provided at the inner handle (332) to prevent the lock (31) from being accidentally opened by the operator when not in operation, by accidentally touching the outer handle (331) or the inner handle (332). The safety component (34) includes: A safety element (341) is used to form a block in the path of movement of the inner handle (332) as it rotates with the pivot (321) in the unlocking direction; and A first drive member (342) is used to drive the safety member (341) to move to a safety position that blocks the inner handle (332) or a safety release position that allows the inner handle (332) to pass.

7. A helicopter observation window, characterized in that, include: Sliding window (1); The window frame of the sliding window (2); A locking mechanism (3) is provided on the sliding window (1) and the window frame (2) of the sliding window; as well as The slide rail mechanism (4) has an upper slide rail (41) and a lower slide rail (42). The upper and lower ends of the sliding window (1) are slidably connected to the upper slide rail (41) and the lower slide rail (42) respectively through slide rail seats (43). Wherein, the locking mechanism (3) is the locking mechanism according to any one of claims 4-6.

8. The helicopter observation window according to claim 7, characterized in that, Also includes: An anti-retraction mechanism (6) is activated, which is installed on the sliding window (1) and the window frame (2) of the sliding window to prevent the sliding window (1) from sliding back in the sliding closing direction after it has slid open to the designated position. The anti-reverse mechanism (6) includes: A limiting hook (61) is rotatably mounted on the sliding window (1); The locking rod (62) is fixedly installed on the window frame (2) of the sliding window and is used to engage with the limiting hook (61); The second driving member (63) is linked with the limiting hook (61) and is used to drive the limiting hook (61) to rotate so that it is in a limited position that engages with the locking rod (62) or in a released position that disengages from the locking rod (62). A tension spring (64), one end of which is fastened to the second drive member (63) and the other end of which is fastened to the sliding window (1), is used to make the limiting hook (61) have a tendency to rotate and reset to the limiting position; A snap-fit ​​drive unit (65) is disposed on the limiting hook (61) for engaging with the locking rod (62) during the sliding opening of the sliding window (1) and driving the limiting hook (61) to rotate from the limiting position to the releasing position; and The release drive unit (66) is provided on the swing arm (322) and is used to cooperate with the second drive unit (63) when the swing arm (322) continues to rotate in the unlocking direction relative to the unlocking position, and drive the limit lock hook (61) to rotate from the limit position to the release limit position.

Images