A locking mechanism arranged on a door frame and a protective door using the locking mechanism

Abstract

The present invention provides a locking mechanism mounted on a door frame and a protective door employing the locking mechanism. The locking mechanism comprises a lock, a lifting mechanism, a fixed seat, and a slide. The slide is formed on the fixed seat. Both ends of the lock are movably connected to the fixed seat via the slide. The bottom of the lock is movably connected to the lifting mechanism. When the lifting mechanism rises, it moves the lock along the upper left or upper right of the slide to unlock. When it is reset, it moves the lock downward along the slide to lock. The fixed seat is mounted on the door frame. The lock is a clip-on lock, with the opening of the clip-on lock facing the door frame. The locking mechanism mounted on the door frame significantly reduces the vibration forces exerted on the lock itself, the lock drive mechanism, and the electronic control system, thereby preventing damage to the locking mechanism caused by explosion vibration. The locking head is configured as a U-shaped clip. When subjected to vibration, the locking head opens and is less likely to become stuck. The locking mechanism defines the overall movement trajectory of the lock, thereby achieving opening and closing of the lock.

Description

Technical Field

[0001] The present invention relates to the field of protective door locking, and in particular to a locking mechanism arranged on a door frame and a protective door using the locking mechanism. Background Art

[0002] A protective door is a door that can withstand various shock waves or collisions of heavy objects. It is generally made of steel. In current civil air defense buildings, factory warehouses and construction sites, protective doors are used to safely protect important equipment and materials. When in use, the protective door needs to be locked to ensure that the door leaf of the protective door can be stably connected to the door frame of the protective door when closed, so as to achieve the effect of sealing protection.

[0003] However, existing protective doors have locking mechanisms mounted on the door leaf, which are opened and closed using a motor, reducer, handle, or handwheel. However, for protective doors subject to explosions, the leaf vibrates violently during blasts. Especially for electrically operated protective doors, the locking mechanism mounted on the leaf vibrates violently with the leaf's vibrations. This severe vibration can easily damage the drive mechanism and electronic control system, making it difficult to meet earthquake and explosion resistance requirements. Summary of the Invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a locking mechanism arranged on the door frame and a protective door with a lock arranged on the door frame. In order to solve the problem that when the door leaf is subjected to an explosion, the locking mechanism is subjected to the impact force of the explosion together with the door leaf, causing damage to the locking mechanism, especially the locking mechanism of the protective door installed with electric opening and closing, the lock is set on the door frame, which can greatly reduce the impact of the strong vibration caused by the explosion on the driving mechanism, locking mechanism and electronic control system.

[0005] The present invention solves this technical problem, and the technical solution adopted is as follows:

[0006] A locking mechanism arranged on a door frame includes: a lock, a lifting mechanism, a fixed seat and a slide groove. The slide groove is opened on the fixed seat. The two ends of the lock are movably connected to the fixed seat through the slide groove. The bottom of the lock is movably connected to the lifting mechanism. When the lifting mechanism rises, it drives the lock to move along the upper left or upper right of the slide groove to unlock. When resetting, it drives the lock downward along the slide groove to reset and lock. The fixed seat is installed on the door frame. The lock is a clip-on lock. The opening of the clip-on lock faces the installed door frame.

[0007] Preferably, the fixing seat is a through slot with a hollow interior or symmetrical support frames are provided on the left and right sides, the sliding grooves are symmetrically opened on the left and right walls of the through slot or the support frames, and there are two fixing seats.

[0008] Preferably, it also includes a pin shaft, there are two pin shafts, namely the first pin shaft and the second pin shaft, and the first through hole and the second through hole are opened at both ends of the lock. The first pin shaft and the second pin shaft pass through the first through hole and the second through hole respectively, so that the two ends of the lock are movably connected to the support frame through the slide groove.

[0009] Preferably, the second pin is movably connected to the lifting mechanism and the second through hole at the same time. When the lifting mechanism rises, it drives the second pin to move along the upper left or upper right of the slide groove, and when it resets, it drives the second pin to reset downward along the slide groove.

[0010] Preferably, the lock has a third through hole, which is opened below the second through hole, and the lifting rod of the lifting mechanism is hinged to the bottom of the lock through the third through hole, or the third through hole is a long hole, and the lifting mechanism is movably connected to the bottom of the lock through the long hole.

[0011] Preferably, the cross section of the lock is U-shaped, and the slide groove is divided into an oblique groove and a vertical groove. The oblique groove and the vertical groove are arranged at an angle to be smoothly connected, and the opening of the angle is opposite to the opening of the lock.

[0012] Preferably, the middle part of the lock is a clamping part, and a first connecting part and a second connecting part are provided at both ends. One end of the first connecting part and the second connecting part is connected to the clamping part, and the other end is movably connected to the support frame through a slide groove. The clamping part, the first connecting part and the second connecting part are formed as one piece.

[0013] Preferably, the lifting mechanism is a hydraulic push rod or a hand / electric lift.

[0014] Preferably, a protective door with a locked door frame comprises a door frame, a door leaf and the locking mechanism arranged on the door frame. The cross-section of the door leaf is rectangular or arched. The inner surface of the rectangular door leaf is provided with a recess. The left side wall and / or right side wall of the recess is provided with a first slot from the inside to the outside, or the left and right ends of the arched door leaf are provided with arch corners, the arch corners are connected to the arc surface of the door leaf to form a second slot, and the arch corners and the door leaf are formed as one piece.

[0015] Preferably, the lifting mechanism is installed in a reserved groove at the lower part of the door frame. When the fixing seat is installed on the left wall or right wall of the door frame, the other side of the door frame is fixedly connected to the other side of the door leaf through a hinge. The left side wall and / or right side wall of the door frame for installing a rectangular door leaf is provided with a third slot from the inside to the outside, or the left side wall and / or right side wall of the door frame for installing an arched door leaf is provided with a supporting seat and a closing body. When the door is locked, the locking clamp clamps the first slot and the third slot or the second slot and the closing body.

[0016] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0017] The lock is set on the door frame, which greatly reduces the vibration force borne by the lock itself, the lock drive mechanism and the electronic control system, and avoids damage to the lock mechanism caused by explosion vibration;

[0018] The locking head of the locking mechanism is set as a U-shaped clamping member. The locking head opens when subjected to vibration and is not easy to get stuck.

[0019] The locking mechanism defines the overall motion trajectory of the lock, thereby enabling the opening and closing of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Structural diagram of a protective door with a lock provided for the door frame.

[0021] Figure 2 Cross-sectional view of a protective door with a lock set for the door frame with a rectangular cross-section.

[0022] Figure 3 A cross-sectional view of a protective door with an arched cross-section and a lock set for the door frame.

[0023] Figure 4 This is a front view of the locking mechanism set on the door frame.

[0024] Figure 5 It is a left view of the locking mechanism set on the door frame.

[0025] exist Figure 1 、 2 , 3, 4 and Figure 5 , the corresponding relationship between component names and reference numerals is as follows:

[0026] 1. Door frame; 2. Lock; 3. Door leaf; 4. Hinge; 5. Fixed seat; 6. Pin shaft; 7. Lifting mechanism; 8. Slide; 9. Support seat; 10. Closing body; 11. Clamping piece; 12. First connecting piece; 13. Second connecting piece. DETAILED DESCRIPTION

[0027] In the description of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0029] like Figure 1 、 2 , 3, 4 and Figure 5 As shown, an embodiment of the present invention provides a locking mechanism mounted on a door frame 1. The locking mechanism comprises a lock 2, a lifting mechanism 7, a fixed base 5, and a chute 8. The lock 2 functions as a lock head and, when locked, locks the door leaf to the door frame 1, sealing it against the door frame 1. The chute 8 limits the locking and opening trajectory of the lock 2. During unlocking, the chute 8 restricts the lock 2 from moving upward, away from the door frame 1 (the vertical sidewall of the door frame 1), and during locking, it restricts the lock 2 from returning to its original position along its unlocking trajectory. The fixed base 5 secures the lock 2 to the door frame 1. The fixed base 5 can be a hollow through-hole or comprised of a base and a support frame. The lifting mechanism 7 utilizes a hydraulic push rod or a manual or electric lift to transmit the force required to lock or unlock the lock 2. Specifically, the chute 8 is formed on the left and right sides of the fixed base 5. The fixed base 5 is movably connected to both ends of the lock 2 via the chute 8, and the bottom (end) of the lock 2 is movably connected to the lifting mechanism 7. When the lock mechanism is unlocked, the lifting rod of the lifting mechanism 7 rises and simultaneously drives (pushes) the lock 2 along the slide 8 to the upper left or upper right to unlock. When resetting, the lock 2 is relocated along the slide 8 along the unlocking trajectory. The lock 2 is a clip-on lock. When installed and used, the opening direction of the clip-on lock faces the door frame 1 where the fixing base 5 is installed.

[0030] Furthermore, when the fixed seat 5 is a through slot with a hollow interior, the slide groove 8 is symmetrically opened on the left and right walls of the through slot, or when the fixed seat 5 is provided with a left-right symmetrical support frame, the slide groove 8 is opened on the support frame. Specifically, the slide groove 8 can penetrate the through slot or the support frame, or it can be simply opened on the inner wall of the through slot or the support frame. Since the locking mechanism of the present invention is mostly used on explosion-proof and shock-resistant protective doors, in order to make the installation more stable, it is preferred to have a slide groove 8 that penetrates the through slot or the support frame. Because the length of the lock 2 is suitable for the height of the door frame 1, when the two ends of the lock 2 are movably connected to the fixed seat 5 through the slide groove 8, the fixed seat 5 used to support and fix the lock 2 is also correspondingly provided with two upper and lower groups, or the fixed seat 5 is a rectangular strip from top to bottom, and symmetrical slide grooves 8 are provided at the upper and lower ends of the rectangular strip.

[0031] Furthermore, the locking mechanism also includes two pins 6, each passing through the ends of the lock 2. The pins 6 are slidably connected to the support frame via a slide groove 8. Specifically, the two pins 6 are a first pin and a second pin, and the ends of the lock 2 also have a first through hole and a second through hole. The first pin passes through the slide groove 8 and the first through hole, and the second pin passes through the slide groove 8 and the second through hole, thereby movably connecting the ends of the lock 2 to the support frame.

[0032] Furthermore, the present invention provides three embodiments of the connection between the lifting mechanism 7 and the lock 2:

[0033] In Example 1, one end of the lifting rod of the lifting mechanism 7 and the bottom of the lock 2 are both movably connected to the second pin. To unlock, the lifting rod of the lifting mechanism 7 rises or falls, pushing the second pin along the upper left or upper right of the chute 8. Simultaneously, the second pin drives the lock 2 and the first pin along the chute 8 to the upper left or upper right to unlock. To lock, the lifting rod of the lifting mechanism 7 falls or rises, pulling the second pin back along the downward trajectory of the chute 8, thereby locking the lock 2.

[0034] In Example 2, a third through-hole is formed in the lock 2, located below the second through-hole. The lifting rod of the lifting mechanism 7 is hingedly connected to the bottom of the lock 2 through the third through-hole. To unlock, the lifting rod of the lifting mechanism 7 rises or falls, pushing the lock 2 upward. This in turn drives the second and first pins along the upper left or upper right sides of the chute 8. To lock, the lifting rod of the lifting mechanism 7 falls or falls, pulling the lock 2 downward. This in turn drives the second and first pins back along the original path of the chute 8.

[0035] In Example 3, one end of the bottom of the lock 2 close to the lifting mechanism 7 extends to the left or right to form an L shape, and the third through hole is a long hole opened in the transverse direction of the extension part. The lifting rod of the lifting mechanism 7 is movably connected to the lock 2 through the long hole, and the lifting rod of the lifting mechanism 7 can move left and right along the long hole.

[0036] Furthermore, the cross-section of the latch 2 of the present invention is U-shaped, and the U-shaped surface structure is uniformly stressed. The chute 8 is divided into an inclined groove and a vertical groove. The vertical groove is perpendicular to the horizontal line. The inclined groove is arranged above or below the vertical groove and is arranged at an angle with the vertical groove. The inclined groove can be regarded as the hypotenuse of the angle. The angle between the inclined groove and the vertical groove is less than 160° and greater than 100°. The opening direction of the angle is opposite to the opening direction of the latch 2. The inclined groove is connected to the vertical groove, and the transition at the angle is smooth.

[0037] Furthermore, if the two ends of the clip-type lock are also U-shaped clips, the span of the pin 6 is large and the closing and opening of the lock 2 are not conducive to the limitation of the support frame. The middle part of the lock 2 of the present invention is a U-shaped clamping member 11, and the two ends are provided with a first connecting member 12 and a second connecting member 13 (the first connecting member 12 and the second connecting member 13 can be steel columns). One end of the first connecting member 12 and the second connecting member 13 is connected to the clamping member, and the other end of the first connecting member 12 is provided with a first through hole, and the other end of the second connecting member 13 is provided with a second through hole and a third through hole. The two pins 6 pass through the first through hole of the first connecting member 12 and the second through hole of the second connecting member 13 respectively, and the two pins 6 are slidably connected to the support frame of the fixed seat 5 through the slide groove 8. In order to ensure the stability of the lock 2 structure, the U-shaped clamping member 11, the first connecting member 12 and the second connecting member 13 are designed to be integrally formed.

[0038] like Figure 1 、 2 As shown in Figures 3 and 4, the present invention also provides a protective door with a door frame 1 provided with a lock, wherein a locking mechanism provided on the door frame 1 is installed on the left or right wall of the door frame 1 of the protective door. The cross section of the door leaf of the protective door is rectangular or arched. Figure 2 As shown, the inner surface of the rectangular door leaf is provided with a recessed portion, the depth of which is less than the thickness of the door leaf and the height of which is greater than the height of the clamping member. The left side wall and / or right side wall of the recessed portion of the rectangular door leaf is provided with a first clamping slot from the inside to the outside (the opening direction of the first clamping slot is opposite to the opening direction of the U-shaped clamping member). Figure 3 As shown, the left and right ends of the arched door leaf are provided with arch angles, which are connected to the curved surface of the door leaf to form a second slot. Specifically, one side of the arch foot is connected to the curved surface to form a T-shaped structure, and the other side is parallel to the horizontal line. The arch angle and the door leaf are formed as one piece. The fixing seat 5 is installed on the left and / or right wall of the door frame 1. Figure 2 、 3 As shown, when the locking mechanism is only installed on the left side wall or the right side wall of the door frame 1, the first card slot or the second card slot for facilitating the locking of the lock 2 is only provided on the left side wall or the right side wall of the corresponding door leaf. If the locking mechanism is installed on both the left and right side walls of the door frame 1, the left and right side walls of the corresponding door leaf are both provided with the first card slot or the second card slot for facilitating the locking of the lock 2. The height of the first card slot and the second card slot should correspond to the height of the clamping member to facilitate locking or unlocking.

[0039] Furthermore, the lifting mechanism 7 is installed in a reserved groove at the bottom of the door frame 1. For example, the lifting mechanism 7 is hingedly installed in the reserved groove. In order to facilitate opening or closing the locking mechanism from both the outside and the inside, the reserved groove is provided with slots on both the inside and outside of the door frame 1. The slots can be blocked with blocking plates. Figure 2As shown, the left and / or right side walls for installing the rectangular door frame 1 are provided with a third slot from the inside out. The first and third slots are provided correspondingly to facilitate the locking of the U-shaped clip. The height of the first and third slots is greater than the height of the clip and less than the height of the door leaf. The left and / or right side walls of the door frame 1 can also be provided with a mounting groove from the inside out to facilitate the insertion and installation of the fixing seat 5. Figure 3 As shown, the left side wall and / or right side wall of the door frame 1 for installing the arched door leaf is divided into two parts: a support seat 9 and a closing body 10. The support seat 9 includes a straight surface (the straight surface is parallel to the horizontal line) and an inclined surface. One end of the straight surface is connected to one end of the inclined surface at an angle (the angle is an obtuse angle). The door frame 1 is used to install the closing body 10 of the fixing seat 5, and its cross-section is a right-angle structure, specifically an L-shape (the long side of the L-shape is perpendicular to the horizontal line, and the short side is parallel to the horizontal line). The door frame 1 is used to install the closing body 10 of the hinge, and the cross-section is rectangular. The obtuse angle is opposite to the opening of the right angle and the arch angle. The other end of the left and right inclined surfaces are respectively connected to the vertices of the L-shape or rectangle (right angle) (integrated). When locking the door, the U-shaped clamp 11 of the lock 2 clamps the first card slot and the third card slot or the second card slot and the L-shaped closing body 10.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A locking mechanism arranged on a door frame (1), characterized in that: include: Lock (2), pin (6), lifting mechanism (7) and fixed seat (5) and slide (8), The slide groove (8) is opened on the fixing seat (5), The two ends of the lock (2) are movably connected to the fixing seat (5) through the sliding groove (8). The bottom of the lock (2) is movably connected to the lifting mechanism (7). When the lifting mechanism (7) rises, it drives the lock (2) to move to the upper left or upper right along the sliding groove (8) to unlock, and when it is reset, it drives the lock (2) to reset downward along the sliding groove (8) to lock. The fixing seat (5) is installed on the door frame (1), and the lock (2) is a clip-on lock, with the opening of the clip-on lock facing the installed door frame (1); The fixing seat (5) is a through slot with a hollow interior or has symmetrical support frames on the left and right sides; There are two pins (6), namely a first pin and a second pin. The two ends of the lock (2) are provided with a first through hole and a second through hole. The first pin shaft and the second pin shaft pass through the first through hole and the second through hole respectively, so that the two ends of the lock (2) are movably connected to the support frame through the sliding groove (8); The cross section of the latch (2) is U-shaped. The chute (8) is divided into an inclined rising chute and a vertical chute, and the inclined rising chute and the vertical chute are arranged at an angle to form a smooth transition connection. The opening of the angle is opposite to the opening of the lock (2).

2. The locking mechanism provided on the door frame (1) according to claim 1, characterized in that: The sliding groove (8) is symmetrically opened on the left and right walls of the through groove or the support frame. There are two fixing seats (5).

3. The locking mechanism provided on the door frame (1) according to claim 1, characterized in that: The second pin is movably connected to the lifting mechanism (7) and the second through hole. When the lifting mechanism (7) rises, it drives the second pin shaft to move to the upper left or upper right along the sliding groove (8), and when it is reset, it drives the second pin shaft to reset downward along the sliding groove (8).

4. The locking mechanism provided on the door frame (1) according to claim 1, characterized in that: The lock (2) is provided with a third through hole, and the third through hole is provided below the second through hole. The lifting rod of the lifting mechanism (7) is hinged to the bottom of the lock (2) through the third through hole, or The third through hole is a long hole, and the lifting mechanism (7) is movably connected to the bottom of the lock (2) through the long hole.

5. The locking mechanism provided on the door frame (1) according to claim 1, characterized in that: The middle part of the lock (2) is a clamping member (11), and the two ends are provided with a first connecting member (12) and a second connecting member (13). One end of the first connecting member (12) and the second connecting member (13) is connected to the clamping member (11), and the other end is movably connected to the support frame through the sliding groove (8). The clamping member (11), the first connecting member (12) and the second connecting member (13) are integrally formed.

6. The locking mechanism provided on the door frame (1) according to claim 5, characterized in that: The lifting mechanism (7) is a hydraulic push rod or a manual / electric lift.

7. A door frame (1) provided with a locked protective door, characterized in that: include: A door frame (1), a door leaf (3), and a locking mechanism arranged on the door frame (1) as claimed in any one of claims 1 to 6, The cross section of the door leaf (3) is rectangular or arched. The inner surface of the rectangular door leaf (3) is provided with a recess, and the left side wall and / or the right side wall of the recess are provided with a first slot from the inside to the outside, or The left and right ends of the arched door leaf (3) are provided with arch angles, the arch angles are connected to the arc surface of the door leaf (3) to form a second slot, and the arch angles and the door leaf (3) are integrally formed.

8. The door frame (1) according to claim 7 is provided with a locked protective door, characterized in that: The lifting mechanism (7) is installed in a reserved groove at the lower part of the door frame (1). When the fixing seat (5) is installed on the left side wall or the right side wall of the door frame (1), the other side of the door frame (1) is fixedly connected to the other side of the door leaf (3) via a hinge (4). The left side wall and / or right side wall of the door frame (1) for mounting the rectangular door leaf (3) is provided with a third slot from the inside to the outside, or The left side wall and / or right side wall of the door frame (1) for mounting the arched door leaf (3) is provided with a support seat (9) and a closing body (10). When the door is locked, the clamping member (11) of the lock (2) clamps the first clamping slot and the third clamping slot or the second clamping slot and the closing body.

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