Door lock device for shielding door

Abstract

The present application provides a door lock device for a shielding door, comprising a fixedly installed limit column and a lock hook that is swingably installed relative to a door panel and cooperates with the limit column, and the door lock device also includes a support, a transmission member and an elastic member; the support is fixedly installed relative to the door panel; the transmission member is slidably arranged in the support, one end of the transmission member is a driving end connected to a shielding door driving mechanism, and the other end is a linkage end movably connected to the lock hook; a force-applying member that can act on the support in both directions along the movement path of the door panel is fixed on the transmission member; the lock hook has a first state for hooking the limit column to lock the door panel and a second state for avoiding the limit column, and the lock hook is switched between the two states by swinging relative to the support; the elastic member acts between the support and the transmission member or the lock hook to drive the lock hook into the first state. The door lock device for a shielding door provided by the present application replaces the electromagnet with a mechanical structure, completes the sequential actions of closing, locking, unlocking and opening the door, and reduces the safety hazards caused by the use of electromagnets.

Description

Technical Field

[0001] The present application relates to the technical field of subway platform shielding doors, and in particular to a door lock device of a platform shielding door. Background Art

[0002] In the platform screen door industry, sliding doors are the only passage between the door system of daily operating rail trains and the platform, and are also an important unit to ensure the safety of passengers. Door locks are an important component in safety assurance.

[0003] When the sliding door operator is closed by the motor through the belt, the lock pin of the sliding door activates the door lock to lock. When there is no door opening signal, the sliding door cannot be opened by external force, thus playing a safe locking role. When the door operator receives the unlocking signal, the door lock electromagnet or motor in the door operator is powered on and started, unlocked through the connecting rod. At this time, the door lock hook is released, and the sliding door can be opened.

[0004] The structural designs of door locks on the market vary, but most of them are controlled by electromagnets for locking and unlocking. Due to the inherent properties of electromagnets, the electromagnets of door locks will magnetize nearby components after long-term use, affecting the normal opening and closing of sliding doors, posing a safety hazard. Summary of the invention

[0005] The present application provides a door lock device for a shielding door, which replaces the electromagnet with a mechanical structure to complete the actions of closing, locking, unlocking and opening the door, thereby reducing the safety hazards caused by the use of electromagnets.

[0006] The door lock device of the shielding door provided in the present application comprises a fixedly installed limit column and a lock hook which is swingably installed relative to the door panel and cooperates with the limit column, and the door lock device also comprises a support, a transmission member and an elastic member;

[0007] The support is fixedly installed relative to the door panel;

[0008] The transmission member is slidably arranged on the support, one end of the transmission member is a driving end connected to the shielding door driving mechanism, and the other end is a linkage end movably connected to the lock hook, and a force-applying member that can act on the support in both directions along the movement path of the door panel is fixed on the transmission member;

[0009] The lock hook has a first state for hooking the limiting column to lock the door panel and a second state for avoiding the limiting column, and the lock hook switches between the two states by swinging relative to the support;

[0010] The elastic member acts between the support and the transmission member or the locking hook to drive the locking hook into the first state.

[0011] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0012] Optionally, the force applying member and the transmission member are an integral or separate structure.

[0013] Optionally, the force applying member and the support cooperate in the following manner:

[0014] The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying members are two, the support is provided with a baffle plate for the push-pull rod to pass through and interfere with the movement path of the force-applying member, the baffle plate is located between the two force-applying members and a movable gap is left between the baffle plate and the force-applying members; or

[0015] The transmission member is a push-pull rod extending in the same direction as the movement direction of the door panel, the force-applying member is a single piece, the support is provided with two baffles for the push-pull rod to pass through and interfering with the movement path of the force-applying member, the force-applying member is located between the two baffles and a movable gap is left between the two baffles; or

[0016] The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying members are two, the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying members, the two force-applying members are located between the two baffles and a movable gap is left between the two baffles; or

[0017] The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel. The force-applying members are two pieces. The support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying members. The two baffles are located between the two force-applying members and a movable gap is left between the two force-applying members.

[0018] When the transmission member moves in the door opening direction, the movable gap is used to first drive the lock hook to release the lock.

[0019] Optionally, a sliding pin is fixed to the linkage end;

[0020] The locking hook comprises:

[0021] A mounting portion having an axial hole rotatably matched with the support;

[0022] The hook portion has a slot for the limiting column to be inserted into and limited in position;

[0023] The driving part is provided with a slide groove for the slide pin to be inserted and slide.

[0024] Optionally, the distance between the slide groove and the shaft hole is 1 / 10 to 1 / 3 of the distance between the clamping groove and the shaft hole.

[0025] Optionally, the locking hook has a guiding inclined surface for guiding its own swing and locking on the limiting column, and the inclination angle of the guiding inclined surface relative to the axial direction of the push-pull rod is 20° to 60°.

[0026] Optionally, the slide groove extends along an arc; in the first state, the sliding pin is in the locking position of the slide groove; in the second state, the sliding pin is in the unlocking position of the slide groove; in the first state, along the direction approaching the unlocking position, the angle between the tangent direction of the arc and the movement direction of the transmission member gradually increases.

[0027] Optionally, the transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying member is two pieces sleeved on the push-pull rod, and the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying member, and the two baffles are located between the two force-applying members and a movable gap is left between the two force-applying members;

[0028] The push-pull rod is fixed with a limiting seat between two baffles, and the elastic member is a compression spring sleeved on the push-pull rod, one end of the compression spring abuts against one of the baffles, and the other end abuts against the limiting seat.

[0029] Optionally, the door panel driving device further includes a manual unlocking mechanism, which includes an operating end and a driving end linked to the operating end and abutting against the force applying member.

[0030] Optionally, the manual unlocking mechanism includes:

[0031] A rotating shaft is fixedly mounted relative to the limiting column;

[0032] A manual operating frame is installed to be liftable relative to the limiting column, and the operating end is provided at the bottom of the manual operating frame;

[0033] A bent plate is rotatably mounted on the rotating shaft, and the bent plate has a pressure-bearing portion abutting against the top surface of the manual operating frame and a driving end abutting against the force-applying member.

[0034] The door lock device for the shielding door provided in the present application replaces the electromagnet with a mechanical structure, completes the sequential actions of closing, locking, unlocking and opening the door, and reduces the safety hazards caused by the use of electromagnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic structural diagram of an embodiment of a door lock device for a shielding door of the present application;

[0036] Figure 2 for Figure 1 Enlarged view of area A in the middle;

[0037] Figure 3 for Figure 1 Enlarged view of area B in the middle;

[0038] Figure 4 A schematic structural diagram of an embodiment of a door lock device for a shielding door of the present application;

[0039] Figure 5 A three-dimensional diagram of an embodiment of a door lock device for a shielding door of the present application;

[0040] Figure 6 A schematic structural diagram of an embodiment of a door lock device for a shielding door of the present application;

[0041] Figure 7 for Figure 5 Enlarged view of area C in the middle;

[0042] Figure 8 This is a schematic diagram showing the relative positions of the sliding pin and the sliding groove in one embodiment of the door lock device of the shielding door of the present application;

[0043] Fig. 9 This is a schematic diagram of the relative positions of the sliding pin and the sliding groove in one embodiment of the door lock device of the shielding door of the present application.

[0044] The reference numerals in the figures are described as follows:

[0045] 1. Limit column; 2. Lock hook; 21. Installation part; 22. Hook part; 23. Drive part; 24. Shaft hole; 25. Slot; 26. Slide groove; 27. Guide slope; 3. Support; 31. Baffle; 4. Transmission member; 41. Drive end; 42. Linkage end; 421. Sliding pin; 43. Force member; 44. Limit seat; 5. Elastic member; 6. Movable gap; 71. Operating end; 711. Manual operating frame; 7111. Offset part; 7112. Push rod; 72. Drive end; 721. Avoidance hole; 8. Door panel; 9. Rotating shaft; 91. Bending plate; 911. Pressure-bearing part; 10. Micro switch. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0049] like Figure 1 As shown, in one embodiment, the door lock device of the shielding door includes a fixedly installed limit column 1 and a lock hook 2 that is swingably installed relative to the door panel (not shown in the figure) and cooperates with the limit column. The door lock device also includes a support 3, a transmission member 4 and an elastic member 5.

[0050] The support 3 is fixedly installed relative to the door panel. The transmission member 4 is slidably arranged on the support 3. One end of the transmission member 4 is a driving end 41 connected to the shield door driving mechanism, and the other end is a linkage end 42 movably connected to the lock hook 2. A force member 43 is fixed on the transmission member 4 and can act on the support 3 in both directions along the movement path of the door panel.

[0051] The lock hook 2 has a first state (i.e. Figure 1 The elastic member 5 acts between the support 3 and the transmission member 4 or the lock hook 2 to drive the lock hook 2 into the first state, and the lock hook 2 switches between the two states by swinging relative to the support 3.

[0052] The shielding door in this embodiment can be composed of one, two or more door panels. Figure 1 The horizontal Figure 1 The shielding door can be closed and opened by moving back and forth (in the same or opposite direction as the arrow X in the figure).

[0053] Under normal use, the closing and opening of the shielding door are controlled by the driving mechanism. In the actual use of the shielding door, external force (such as manpower) may directly act on the door panel to force the shielding door to open, which poses a safety hazard. The basic function of the door lock device provided in this embodiment is to ensure that the shielding door can only be closed and opened under the control of the driving mechanism, and to ensure that the shielding door cannot be opened by directly acting on the door panel.

[0054] Conventional door lock devices use electromagnets, which need to send a control signal at a set time to drive the electromagnet to drive the locking member (such as a lock pin) to achieve the purpose of locking and unlocking the door panel. In order to solve the reliability and safety problems caused by relying on electromagnets to drive the locking member, this embodiment aims to rely on the mechanical power of the existing driving mechanism of the shielding door system to drive the locking member to move, and also achieve the purpose of locking and unlocking the door panel.

[0055] It can be understood that the screen door driving mechanism in this embodiment has a movable portion, which can move along Figure 1 In the conventional door lock device of the shielding door, the door plate moves together with the movable part, and the door plate cannot freely move in the horizontal direction relative to the movable part. The door plate in this embodiment is not directly fixed to the movable part of the shielding door driving mechanism, but has a certain space for free movement in the horizontal direction relative to the movable part.

[0056] Specifically, the transmission member 4 and the force member 43 in this embodiment are fixed relative to the movable part of the shielding door driving mechanism, and the support 3 in this embodiment is fixed relative to the door panel. Figure 1 On the other hand, there is a lateral movement to the left or right between the force applying member 43 and the support 3. Figure 1 The movable gap 6 is shown. Because of the movable gap 6, the transmission member 4 can still move laterally under the premise that the lateral position of the door panel does not move. The lateral movement of the transmission member 4 causes the lock hook 2 to swing, thereby achieving locking and unlocking of the door panel.

[0057] The opening and closing process of the shielding door and the locking and unlocking process of the door lock device in this embodiment are described as follows:

[0058] In the initial state, the shielding door is in the open state, the door panel is far away from the limiting column 1, the lock hook 2 is far away from the limiting column 1 together with the door panel, and the lock hook 2 is in the first state. It should be noted that the first state and the second state emphasize the different spatial postures (spatial rotation angles) of the lock hook 2, which have nothing to do with the spatial position of the lock hook 2. For example, the lock hook 2 can have the first state and the second state at a position close to the limiting column 1, and the lock hook 2 can also have the first state and the second state at a position far away from the limiting column 1.

[0059] When the shielding door needs to be closed, the transmission member 4 is driven by the shielding door driving mechanism to move toward Figure 1 The force applying member 43 contacts the support 3 and pushes the support 3 toward Figure 1 The door panel and the lock hook 2 mounted on the support 3 gradually move toward the limit column 1 until the shielding door is closed. Figure 1 On the other hand, the door is locked by the swinging of the lock hook 2.

[0060] The specific process of locking the door is as follows:

[0061] The lock hook 2 is initially in Figure 1 In the first state shown, the lock hook 2 is facing Figure 1The locking hook 2 moves in the X direction until the end (head) of the locking hook 2 away from the rotating shaft touches the limiting column 1. The limiting column 1 pushes the head of the locking hook 2 to make the locking hook 2 swing to the second state; at the same time, the transmission member 4 moves laterally relative to the support 3, and the elastic member 5 between the transmission member 4 and the support 3 stores energy, or the elastic member 5 between the locking hook 2 and the support 3 stores energy. In the second state, the head of the locking hook 2 avoids the limiting column 1 and continues to move along the Figure 1 After the head of the lock hook 2 bypasses the limiting column 1, the elastic member 5 between the lock hook 2 and the support 3 directly acts on the lock hook 2, so that the lock hook 2 returns to the first state and is hooked with the limiting column 1; or the elastic member 5 between the transmission member 4 and the support 3 acts on the transmission member 4, and then acts on the lock hook 2 through the transmission member 4, so that the lock hook 2 returns to the first state and is hooked with the limiting column 1.

[0062] When the shielding door needs to be opened, the transmission member 4 is driven by the shielding door driving mechanism to move toward Figure 1 The reverse direction movement of the X direction in the middle. Since there is a force applying member 43 and the support 3, Figure 1 In the movable gap 6 shown, the transmission member 4 does not act on the support 3 at the beginning, but only acts on the lock hook 2. In other words, the door panel does not move rightward with the transmission member 4 at the beginning, but only the transmission member 4 pulls the lock hook 2 to convert the lock hook 2 from the first state to the second state to complete the unlocking action. After the unlocking is completed, the force member 43 acts on the support 3, and the transmission member 4 pulls the support 3 and the door panel to move rightward to complete the door opening action.

[0063] Both locking and unlocking of the shielding door require relative movement between the transmission member 4 and the support 3. If the user attempts to forcefully open the shielding door by pushing the door panel, the support 3 will move with the transmission member 4, and the two cannot produce relative movement, so that the lock hook 2 cannot swing and unlock, thereby avoiding accidents.

[0064] This embodiment relies on mechanical components linked with the shield door driving mechanism to complete the closing, locking, unlocking and opening actions of the shield door, avoiding the use of electromagnets, and is safer and more reliable.

[0065] In one embodiment, the shielding door driving mechanism is a synchronous belt transmission mechanism driven by a motor, and the movable part of the shielding door driving mechanism is a flexible synchronous belt. The driving end of the transmission member 4 is fixedly connected to the synchronous belt.

[0066] In one embodiment, the force-applying member and the transmission member are an integrated or split structure. Both the integrated or split structure can keep the relative position of the force-applying member and the transmission member fixed. The force-applying member and the transmission member of the integrated structure have a smaller position deviation during use and are highly reliable. The force-applying member and the transmission member of the split structure are easier to process and manufacture.

[0067] In order to ensure that there is a movable gap between the force applying member 43 and the support 3 and that the force applying member 43 can act on the support 3 in both directions, there are many implementation methods.

[0068] Specifically, in one embodiment, the transmission member 4 is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, and the force member 43 is two pieces that are sleeved on the push-pull rod (or other fixed installation methods can be used), and the support 3 is provided with a baffle for the push-pull rod to pass through and interfere with the movement path of the force member 43. The baffle is located between the two force members and there is a movable gap between the baffle and the force members. When the transmission member 4 moves in the door opening direction, the movable gap is used to first drive the lock hook 2 to release the lock. The force member 43 is mainly for the mutual linkage between the components, so the specific shape is not strictly limited.

[0069] In one embodiment, the transmission member 4 is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force member 43 is a piece sleeved on the push-pull rod, the support 3 is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force member, and the force member is located between the two baffles and has a movable gap between the two baffles. When the transmission member moves in the door opening direction, the movable gap is used to first drive the lock hook to release the lock.

[0070] In one embodiment, the transmission member 4 is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force applying member 43 is two pieces sleeved on the push-pull rod, the support 3 is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force applying member, and the two force applying members are located between the two baffles and there is a movable gap between the two baffles. When the transmission member moves in the door opening direction, the movable gap is used to drive the lock hook to release the lock first.

[0071] In one embodiment, if Figure 2 As shown, the transmission member 4 is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying member 43 is two pieces sleeved on the push-pull rod, and the support 3 is provided with two baffles 31 for the push-pull rod to pass through and interfere with the movement path of the force-applying member. The two baffles 31 are located between the two force-applying members 43 and a movable gap 6 is left between the baffles 31.

[0072] When the transmission member moves in the door opening direction, the active gap is used to drive the lock hook to release the lock first.

[0073] Each force applying member may be a single member or a collection of multiple members.

[0074] In one embodiment, if Figure 3As shown, a sliding pin 421 is fixed to the linkage end 42. The lock hook 2 includes a mounting portion 21, a hook portion 22 and a driving portion 23. The mounting portion 21 has an axial hole 24 that is rotatably matched with the support 3. The hook portion 22 has a slot 25 for the limit column 1 to be inserted into the limit position. The driving portion 23 has a slide slot 26 for the sliding pin 421 to be inserted and slide. The lock hook 2 can swing around the axial hole 24 relative to the support 3, and the transmission member 4 can move laterally relative to the support 3. The sliding match between the sliding pin 421 and the slide slot 26 determines the linkage relationship between the lock hook 2 and the transmission member 4.

[0075] Taking the unlocking process as an example, the initial state is Figure 3 In the locked state shown, the limit column 1 is located in the slot 25, and the sliding pin 421 is at the left end of the slot 26. When unlocking is required before opening the door, the transmission member 4 is pulled to the right, and the sliding pin 421 slides to the right end of the slot 26. Since the sliding pin 421 cannot move up and down, the lock hook 2 rotates clockwise around the shaft hole 24, and the limit column 1 is separated from the slot 25, completing the unlocking action.

[0076] Specifically, in one embodiment, Figure 3 As shown, the distance between the slide and the shaft hole is 1 / 10 to 1 / 3 of the distance between the clamping slot and the shaft hole. The distance between the slide and the shaft hole can be understood as the maximum distance between the periphery of the slide and the periphery of the shaft hole. The distance between the clamping slot and the shaft hole can be understood as the maximum distance between the periphery of the clamping slot and the periphery of the shaft hole. If the ratio is too small, the requirements for the machining accuracy of the parts are high and the reliability is difficult to guarantee. If the ratio is too large, the requirements for the shield door drive mechanism are too high.

[0077] Further, in one embodiment, if Figure 3 As shown, the locking hook 2 has a guiding inclined surface 27 for guiding its own swing and locking on the limiting column, and the inclination angle of the guiding inclined surface relative to the axial direction of the push-pull rod is 20° to 60°.

[0078] In one embodiment, if Figure 3 As shown, the slide slot extends along an arc; in the first state, the sliding pin 421 is in the locked position of the slide slot 26; in the second state, the sliding pin 421 is in the unlocked position of the slide slot 26; in the first state, along the direction close to the unlocked position, the angle between the tangent direction of the arc and the moving direction of the transmission member gradually increases. The locked position is Figure 3 The lower left end of the middle slide (blocked by the transmission member 4), unlocked position Figure 3 Compared with the slide groove extending along a straight line, the slide groove extending along an arc can reduce the lateral displacement of the transmission member 4 when the sliding pin slides from one end of the slide groove to the other end, thereby reducing the deformation of the synchronous belt.

[0079] Specifically, in one embodiment, Figure 2As shown, the transmission member 4 is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying member 43 is two pieces sleeved on the push-pull rod, and the support 3 is provided with two baffles 31 for the push-pull rod to pass through and interfere with the movement path of the force-applying member 43. The two baffles 31 are located between the two force-applying members 43 and a movable gap is left between the baffles 31.

[0080] The push-pull rod is fixed with a limit seat 44 between the two baffles 31 . The elastic member 5 is a compression spring sleeved on the push-pull rod. One end of the compression spring abuts against one of the baffles 31 , and the other end abuts against the limit seat 44 .

[0081] The function of the limit seat 44 is to transfer the force between the transmission member 4 and the elastic member 5. When the lock hook 2 moves from the first state to the second state, the transmission member 4 moves rightward relative to the support 3, and the two ends of the elastic member 5 are pushed by the limit seat 44 and the baffle 31 to store energy. When the lock hook 2 moves from the second state to the first state, the elastic member 5 pushes the limit seat 44 and the transmission member 4 to move leftward.

[0082] In one embodiment, if Figure 4 , Figure 5 , Figure 6 As shown, the shielding door includes two door panels 8 that open opposite to each other. The two door panels 8 are driven by two synchronous belts of a synchronous belt driving mechanism that move in parallel and in opposite directions. The shielding door has two sets of door lock devices, which are respectively linked to the two door panels 8. Specifically, the transmission member of one set of door lock devices is fixedly connected to the outgoing section of the synchronous belt, and the transmission member of the other set of door lock devices is fixedly connected to the return section of the synchronous belt. When the motor of the synchronous belt driving mechanism rotates forward, the shielding door is closed and the door panel is locked. When the motor of the synchronous belt driving mechanism rotates reversely, the door panel is unlocked and the shielding door is opened.

[0083] In one embodiment, if Figure 4 , Figure 5 , Figure 7 As shown, the door panel driving device also includes a manual unlocking mechanism, which includes an operating end 71 and a driving end 72 that is linked with the operating end 71 and abuts against the force applying member 43. There is one operating end 71 and is installed in the middle of the two door panels, which is shared by the two sets of door panel driving devices. There are two driving ends 72 and they are respectively linked with the transmission members 4 of the two sets of door panel driving devices. The manual unlocking mechanism can be operated by professionals when maintenance is required, thereby increasing the reliability of the door lock device.

[0084] Specifically, the manual unlocking mechanism includes a rotating shaft 9, a manual operating frame 711 and a bent plate 91. The rotating shaft 9 is fixedly installed relative to the limiting column 1. The manual operating frame 711 can be lifted relative to the limiting column 1, and an operating end 71 is provided at the bottom of the manual operating frame; the bent plate 91 is rotatably installed on the rotating shaft 9, and the bent plate 91 has a pressure-bearing portion 911 abutting against the top surface of the manual operating frame 711 and a driving end 72 abutting against the force-applying member 43.

[0085] A sleeve is provided between the pressure-bearing portion 911 and the driving end 72 for the rotating shaft 9 to pass through. The manual operating frame 711 includes an offset portion 7111 and a push rod 7112 which are fixed to the operating end 71 in sequence. When the operating end 71 is pushed upward by manpower, the push rod 7112 presses upward against the pressure-bearing portion 911, and the bent plate 91 rotates around the Figure 7 The rotating shaft 9 rotates in the clockwise direction, and the driving end 72 is provided with an avoidance hole 721 for the transmission member 4 to pass through. The driving end 72 pushes the force member 43 to the right, so that the transmission member 4 moves to the right relative to the support 3 and is unlocked. The specific unlocking process can be referred to the above embodiment, which will not be repeated here.

[0086] In one embodiment, if Figure 5 As shown, the door lock device of the shielding door further includes a micro switch 10 fixed near the limit column 1. In the first state, the lock hook triggers the micro switch 10. The micro switch 10 sends a door panel locking signal to the shielding door control system for confirmation.

[0087] In one embodiment, if Figure 2 As shown, the transmission member 4 is a push-pull rod, and the force-applying member is two pieces, one of which is a rubber buffer gasket, and the other is a locking nut that matches the thread of the push-pull rod. By adjusting the position of the locking nut relative to the push-pull rod, the size of the active gap can be adjusted. If the locking nut is adjusted to make the active gap smaller, the locking nut pushes the door panel to close; if the active gap is moderate, the locking nut and the limit seat 44 can jointly push the door panel to close; if the active gap is large, the limit seat 44 pushes the door panel to close, and the locking nut can be removed at this time.

[0088] In one embodiment, if Figure 8 , Fig. 9 As shown, the diameter of the sliding pin 421 is smaller than the width of the sliding groove 26, and there is a matching gap G between the sliding pin 421 and the sliding groove 26. Figure 8 and Fig. 9 The lock is unlocked by moving the lock hook 2 to the right in the direction of the arrow in the figure. The lock hook 2 is then pulled up to unlock the lock after it hits the wall of the slide slot 26. After unlocking, the slide pin 421 cannot reach the top of the slide slot 26 and can be unlocked in the middle of the arc. By lengthening the slide slot 26, it is possible to ensure that the slide pin 421 has sufficient movement margin.

[0089] In one embodiment, a torsion spring (not shown in the figure) connected between the lock hook 2 and the support 3 is provided near the shaft hole 24, and the lock hook 2 is driven into the first state and hooked and locked with the limiting column 1 by the restoring force of the torsion spring.

[0090] In one embodiment, the locking mechanism of the lock hook and the feedback mechanism of the switch signal are combined. When the motor is energized, the connecting rod is driven to move, so that the lock hook swings to unlock, and the switch is also triggered, and an automatic unlocking signal is sent to the system. The coordination of the switch is also very important. In this design, an adjustable waist groove is used to adjust the switch position, which makes the installation position of the switch more flexible and reduces the processing requirements.

[0091] In one embodiment, a rotation limit shape design is added to the lock hook design for rotational locking to prevent the lock hook from being driven over by the sliding door lock connecting rod during the door opening and closing process, thereby affecting the sliding door lock hook entering the set position of the lock hook when the door is closed next time.

[0092] In one embodiment, in the lock hook design, a bent plate design is used to cooperate with the movement of the sliding door connecting rod. At the same time, this bent plate is also used to activate the door lock switch, which simplifies the design.

[0093] In one embodiment, in the manual unlocking design, a bent plate design is used to coordinate the movement of the sliding door top rod.

[0094] In one embodiment, buffer rubber pads are used in the collision components to reduce the sound and sliding resistance of the mechanism during the collision process.

[0095] In one embodiment, the mechanism rotation pair uses high-performance materials or components. During the rotation of the lock hook, aluminum bronze is used as the rotation friction. This makes the entire mechanism smoother during the movement process, and also improves the movement accuracy and service life.

[0096] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0097] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A door lock device for a shielding door, comprising a fixedly installed limit column and a lock hook which is swingably installed relative to a door panel and cooperates with the limit column, characterized in that: The door lock device also includes a support, a transmission member and an elastic member; The support is fixedly installed relative to the door panel; The transmission member is slidably arranged on the support, one end of the transmission member is a driving end connected to the shielding door driving mechanism, and the other end is a linkage end movably connected to the lock hook, and a force-applying member that can act on the support in both directions along the movement path of the door panel is fixed on the transmission member; The lock hook has a first state for hooking the limiting column to lock the door panel and a second state for avoiding the limiting column, and the lock hook switches between the two states by swinging relative to the support; The elastic member acts between the support and the locking hook to drive the locking hook into the first state; The force applying member and the support cooperate in the following manner: The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying members are two, the support is provided with a baffle plate for the push-pull rod to pass through and interfere with the movement path of the force-applying member, the baffle plate is located between the two force-applying members and a movable gap is left between the baffle plate and the force-applying members; or The transmission member is a push-pull rod extending in the same direction as the movement direction of the door panel, the force-applying member is a single piece, the support is provided with two baffles for the push-pull rod to pass through and interfering with the movement path of the force-applying member, the force-applying member is located between the two baffles and a movable gap is left between the two baffles; or The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying members are two, the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying members, the two force-applying members are located between the two baffles and a movable gap is left between the two baffles; or The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel. The force-applying members are two pieces. The support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying members. The two baffles are located between the two force-applying members and a movable gap is left between the two force-applying members. When the transmission member moves in the door opening direction, the movable gap is used to first drive the lock hook to release the lock.

2. The door lock device of the shielding door according to claim 1, characterized in that: The force applying member and the transmission member are an integral or separate structure.

3. The door lock device of the shielding door according to claim 1, characterized in that: The linkage end is fixed with a sliding pin; The locking hook comprises: A mounting portion having an axial hole rotatably matched with the support; The hook portion has a slot for the limiting column to be inserted into and limited in position; The driving part is provided with a slide groove for the slide pin to be inserted and slide.

4. The door lock device of the shielding door according to claim 3, characterized in that: The distance between the slide groove and the shaft hole is 1 / 10 to 1 / 3 of the distance between the clamping groove and the shaft hole.

5. The door lock device of the shielding door according to claim 1, characterized in that: The locking hook is provided with a guiding inclined surface for guiding its own swinging and locking on the limiting column, and the inclination angle of the guiding inclined surface relative to the axial direction of the push-pull rod is 20° to 60°.

6. The door lock device of the shielding door according to claim 3, characterized in that: The slide groove extends along an arc; in the first state, the sliding pin is in the locking position of the slide groove; in the second state, the sliding pin is in the unlocking position of the slide groove; in the first state, along the direction approaching the unlocking position, the angle between the tangent direction of the arc and the movement direction of the transmission member gradually increases.

7. The door lock device of the shielding door according to claim 1, characterized in that: The transmission member is a push-pull rod whose extension direction is consistent with the movement direction of the door panel, the force-applying member is two pieces sleeved on the push-pull rod, and the support is provided with two baffles for the push-pull rod to pass through and interfere with the movement path of the force-applying member, and the two baffles are located between the two force-applying members and a movable gap is left between the two force-applying members; The push-pull rod is fixed with a limiting seat between two baffles, and the elastic member is a compression spring sleeved on the push-pull rod, one end of the compression spring abuts against one of the baffles, and the other end abuts against the limiting seat.

8. The door lock device of the shielding door according to claim 1, characterized in that: The door panel driving device further comprises a manual unlocking mechanism, which comprises an operating end and a driving end linked with the operating end and abutting against the force applying member.

9. The door lock device of the shielding door according to claim 8, characterized in that: The manual unlocking mechanism comprises: A rotating shaft is fixedly mounted relative to the limiting column; A manual operating frame is installed to be liftable relative to the limiting column, and the operating end is provided at the bottom of the manual operating frame; A bent plate is rotatably mounted on the rotating shaft, and the bent plate has a pressure-bearing portion abutting against the top surface of the manual operating frame and a driving end abutting against the force-applying member.

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