A triangular lock device

Abstract

The present invention discloses a triangular lock device, including a lock and a key that cooperate with each other, wherein the lock includes a lock body, a lock core and an anti-slip mechanism; the lock body is provided with a lock hole that passes through both ends thereof, and the side wall of the lock body is also provided with a through groove that connects to the lock hole, one end of the lock core is rotatably embedded in the lock hole, and the anti-slip mechanism includes an elastic clamp that is telescopically arranged in the through groove and a card pusher that is fixedly installed on the lock core, and the card pusher pushes the elastic clamp as the lock core rotates, so that the elastic clamp extends into the lock hole to restrict the key from slipping out. The triangular lock device adds an anti-slip mechanism that restricts the key from slipping out, and has the function of keeping the key from slipping out when the lock is opened, and can be used as a device for opening an electrical trigger switch. In addition, the other locks used in the elevator are also existing triangular locks, so that the triangular locks on various structures of the elevator share one key, reducing the types of keys and improving the efficiency of inspection and maintenance.

Description

Technical Field

[0001] The invention belongs to the field of elevator equipment, and in particular relates to a triangular lock device. Background Art

[0002] As a special equipment, elevators are required to use special triangular locks for their locks. Generally, they are used on elevator floor doors, safety windows, control cabinets and other structures. However, when the triangular lock is used as a device to open the electrical trigger switch, the functional requirements for the triangular lock are different. The key needs to be inserted into the keyhole and rotated to the position where the trigger switch is turned on, and the key must be kept in place during inspection and maintenance operations to prevent the trigger switch from being unable to be reset due to the key being detached, thereby threatening the safety of the elevator operation.

[0003] The existing triangular lock cannot provide the function of keeping the key from falling out. If a pin lock is used, the key of the pin lock is different from the key of the triangular lock and cannot be shared with other triangular locks on the elevator, thereby increasing the types of keys and affecting the efficiency of inspection and maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide a triangular lock device, which has the function of limiting the key from being disengaged from the lock, so that once the key in the triangular lock device is inserted into the lock hole and rotated to the position of opening the trigger switch, it cannot be directly pulled out, and the key needs to be rotated in reverse to close the trigger switch before the key can be taken out, thereby avoiding the problem of reduced safety factor of elevator operation due to misoperation, forgetting or accidental dropping of the key.

[0005] The present invention is achieved through the following technical solutions:

[0006] A triangular lock device comprises a lock and a key which cooperate with each other, wherein the lock comprises a lock body, a lock core and an anti-slipping mechanism; the lock body is provided with a lock hole which passes through both ends thereof, and the side wall of the lock body is also provided with a through groove which communicates with the lock hole, one end of the lock core is rotatably embedded in the lock hole, and the anti-slipping mechanism comprises an elastic clamp which is telescopically arranged in the through groove and a card pusher which is fixedly mounted on the lock core, and the card pusher pushes the elastic clamp as the lock core rotates, so that the elastic clamp extends into the lock hole to restrict the key from slipping out.

[0007] Through the above scheme, the present invention at least achieves the following technical effects:

[0008] The key is inserted into the lock hole and connected to the lock core. Rotating the key causes the lock core to rotate and drives the card puller to rotate synchronously. During the rotation of the card puller, it contacts one end of the elastic clamping piece protruding from the side wall of the lock body and pushes the elastic clamping piece into the through groove, so that the elastic clamping piece extends into the lock hole to clamp the key, thereby preventing the key from falling out of the lock hole.

[0009] Preferably, the elastic card comprises a card and a spring; the card is telescopically arranged in the through slot, a protrusion is arranged on the surface of the card, the spring is arranged along the telescopic direction of the card, and one end of the spring is connected to the protrusion and the other end is connected to the through slot.

[0010] Preferably, the end surface of the card protruding from the side wall of the lock body is a convex arc surface.

[0011] Preferably, the card ejector comprises a fixed beam and a top block; the top block is connected to the lock core via the fixed beam and is suspended on the side of the lock body; the side wall of the top block facing the lock body is a guiding inclined surface or a guiding curved surface and is in tangential contact with the card.

[0012] Preferably, the key comprises a handle body, a rod body and an engaging head which are connected in sequence; the engaging head is provided with a triangular groove for cooperating with the lock core, the diameter of the rod body is smaller than the diameter of the engaging head, a clamping position is formed at the connection between the two, and the card is pressed against the clamping position to restrict the key from falling out.

[0013] Preferably, the lock core comprises a lock rod and a triangular head arranged at one end of the lock rod, and the lock rod is a quadrangular prism, two opposite side surfaces of which are planes, and the other two opposite side surfaces are convex arc surfaces and are formed with threads.

[0014] Preferably, the lock further comprises a trigger paddle, on which a strip groove is formed; the lock rod passes through the strip groove and its two planar side walls correspond to the two inner walls of the strip groove, and the trigger paddle is fixed to the lock rod by two nuts.

[0015] Preferably, an arc-shaped groove is provided at one end of the card extending into the lock hole.

[0016] Preferably, a limit block is embedded in the lock hole, and one end of the lock core is embedded in the limit block to limit the rotation angle of the lock core.

[0017] Preferably, an outer flange is formed on the edge of the end surface of the lock body, and a fastening sheet is sleeved on the outer wall of the lock body, and the fastening sheet cooperates with the outer flange to fix the lock body.

[0018] The beneficial effects of the present invention are:

[0019] The triangular lock device has an anti-drop mechanism to prevent the key from falling out, which has the function of preventing the key from falling out when the lock is opened, and can be used as a device to open the electrical trigger switch. In addition, the other locks used in the elevator are also existing triangular locks, so that the triangular locks on various structures of the elevator share the same key, reducing the number of keys and improving the efficiency of inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the matching state of a key and a lock provided in one embodiment of the present invention.

[0021] Figure 2 The figure is a schematic diagram of the assembly structure of a lock provided in one embodiment of the present invention.

[0022] Figure 3 The figure is a schematic diagram of the three-dimensional structure of a key provided in one embodiment of the present invention.

[0023] Figure 4 It is a three-dimensional schematic diagram of a closed state of a triangular lock device provided in one embodiment of the present invention.

[0024] Figure 5 It is a three-dimensional schematic diagram of an open state of a triangular lock device provided in one embodiment of the present invention.

[0025] Figure 6 A cross-sectional schematic diagram of an open state of a triangular lock device provided in one embodiment of the present invention

[0026] legend:

[0027] 1 lock; 2 key; 3 surface plate;

[0028] 11 lock body; 12 lock core; 13 anti-drop mechanism; 14 trigger paddle

[0029] 21 handle body; 22 rod body; 23 engaging head; 24 clamp position;

[0030] 111 lock hole; 112 through slot; 113 limit block; 114 outer flange; 115 fastening sheet;

[0031] 121 locking rod; 122 triangular head;

[0032] 131 elastic card; 132 card puller;

[0033] 141 strip grooves;

[0034] 1311 card; 1312 spring; 1313 bump; 1314 arc groove;

[0035] 1321 fixed beam; 1322 top block. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Embodiment 1:

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, this embodiment provides a triangular lock device, which consists of a lock 1 and a key 2. The lock 1 includes a lock body 11, a lock core 12 and an anti-drop mechanism 13; the lock body 11 is provided with a lock hole 111 with two ends through, and one end of the lock core 12 with a triangular head 122 is rotatably arranged in the lock hole 111. After the key 2 is inserted into the lock hole 111, the triangular groove on the key 2 can be matched with the triangular head 122 on the lock core 12. The anti-slip mechanism 13 is composed of a card pusher 132 installed on the lock core 12 and an elastic clamp 131 arranged on the lock body 11. The side wall of the lock body 11 is provided with a through groove 112 connected to the lock hole 111. The elastic clamp 131 is telescopically embedded in the through groove 112. The card pusher 132 rotates synchronously with the lock core 12 and contacts the elastic clamp 131 on the outside of the lock body 11. During the rotation of the card pusher 132, the elastic clamp 131 is pushed along the through groove 112 into the lock hole 111, and the elastic clamp 131 extends into the lock hole 111 to constrain the key 2 clamp to prevent the key 2 from slipping out.

[0039] like Figure 2 As shown, the elastic card 131 is composed of a card 1311 and a spring 1312; the card 1311 is in the shape of a plate, and its end surface protruding from the outer wall of the lock body 11 is a convex arc surface, so that the process of the card pusher 132 and the card 1311 contacting each other is smoother, and the card pusher 132 and the card 1311 edges are prevented from being stuck, causing the key 2 to be unable to rotate, and the card pusher 132 to be unable to push the card 1311 into the lock hole 111. The surface of the card 1311 is provided with a protrusion 1313 for installing the spring 1312. The spring 1312 is arranged along the telescopic movement direction of the card 1311, one end of which is connected to the protrusion 1313, and the other end is fixed in the through groove 112, and is used to reset the card 1311.

[0040] like Figure 2 As shown, the card puller 132 is composed of a fixed beam 1321 and a top block 1322; the fixed beam 1321 is a bent strip structure, one end of which is fixed to the lock core 12, and the other end is fixedly connected to the top block 1322. The top block 1322 is suspended on the side of the lock body 11 through the bent shape of the fixed beam 1321, and the top block 1322 and the card 1311 are in the same plane perpendicular to the central axis of the lock core 12. The side wall of the top block 1322 facing the lock body 11 is a guiding inclined surface or a guiding curved surface.

[0041] like Figure 5 As shown, when the key 2 is inserted into the lock hole 111 and rotated forward to open the lock 1, the card pusher 132 rotates synchronously with the lock core 12. During the rotation process, the inclined surface of the top block 1322 of the card pusher 132 is tangentially in contact with the convex arc surface of the card 1311, and the tangent point between the two moves along the inclined surface and leans against the lock body 11, achieving the effect of pushing the card 1311 along the through groove 112 into the lock hole 111, so as to prevent the key 2 from escaping from the lock hole 111.

[0042] like Figure 4 As shown, when the key 2 is rotated in the opposite direction to close the lock 1, the tangent point between the inclined surface of the top block 1322 and the convex arc surface of the card 1311 moves along the inclined surface and away from the lock body 11 until the top block 1322 is separated from the card 1311. The card 1311 pops up and resets along the through groove 112 under the elastic force of the spring 1312, retracts the part extending into the lock hole 111, and releases the restriction effect on the key 2.

[0043] It is worth mentioning that Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in order to enhance the effect of preventing the key 2 from falling out, two through grooves 112 are symmetrically opened on the side wall of the lock body 11, and the two through grooves 112 are respectively provided with elastic clamps 131. There are two symmetrical card pullers 132, which push the two elastic clamps 131 respectively, so that the two elastic clamps 131 clamp the key 2 from both sides at the same time to prevent it from falling out of the lock hole 111.

[0044] Embodiment 2:

[0045] like Figure 2 , Figure 3 and Figure 6 As shown, based on Example 1, this embodiment improves the structure of the key 2 and the structure of the card 1311, so that the two can fit more closely, enhance the effect of the card 1311 in restraining the key 2, and make the key 2 more stably confined in the lock hole 111, avoiding accidental vibration or scratches that may cause the key 2 to fall off.

[0046] like Figure 3 and Figure 6 As shown, the key 2 is composed of a handle body 21, a rod body 22 and an engaging head 23 with a triangular groove connected in sequence, wherein the engaging head 23 and the rod body 22 are both cylindrical, and the central axes of the two coincide to maintain linear alignment, and the diameter of the engaging head 23 is larger than the diameter of the rod body 22. A stepped or sloped clamp position 24 is formed at the connection between the two due to the size difference. After the card 1311 is pushed by the card puller 132, the end thereof extending into the lock hole 111 is pressed against the clamp position 24, so that the engaging head 23 with a larger diameter is restricted by the card 1311 and cannot be pulled out of the lock hole 111, thereby achieving the effect of preventing the key 2 from falling out.

[0047] like Figure 2 and Figure 6 As shown, an arc groove 1314 is provided at one end of the card 1311 extending into the lock hole 111, so that the arc groove 1314 is buckled on the rod body 22 or on the connection between the rod body 22 and the engaging head 23 to form a circumferential constraint, which not only improves the anti-dropping effect of the key 2, but also improves the stability of the key 2 in the lock hole 111.

[0048] Embodiment 3:

[0049] like Figure 1 , Figure 2 and Figure 6 As shown, this embodiment improves part of the structure of the lock 1 on the basis of the embodiment 1 or the embodiment 2, and optimizes the effect of the triangular lock device.

[0050] like Figure 2 As shown, the lock core 12 is composed of a lock rod 121 and a triangular head 122 disposed at the end of the lock rod 121; the lock rod 121 is a quadrangular prism, wherein two opposite side walls of the lock rod 121 are planes, and the other two opposite side walls are convex arc surfaces. The lock rod 121 can be formed by cutting a cylinder by two parallel planes. The side walls of the two convex arc surfaces are provided with continuous threads for matching nuts, and the two plane side walls are used to provide a rotation limiting effect.

[0051] like Figure 2 As shown, the lock 1 also includes a trigger paddle 14, and a strip groove 141 is formed on the trigger paddle 14. During installation, after the end of the lock rod 121 is inserted into the first nut, the end of the lock rod 121 is passed through the strip groove 141, and then the second nut is inserted into the end of the lock rod 121, so that the two nuts are clamped on both sides of the trigger paddle 14, and the trigger paddle 14 is fixed to the lock rod 121 by tightening the two nuts. The two planar side walls of the lock rod 121 correspond to the two inner walls of the strip groove 141, which can not only ensure that the lock rod 121 passes through the strip groove 141 smoothly, but also achieve the effect of torque transmission through the two planar side walls and the inner wall of the strip groove 141, and convert the self-rotation motion of the lock rod 121 into the motion of the trigger paddle 14 rotating around the lock rod 121, and the trigger paddle 14 is used to trigger the switch.

[0052] like Figure 2 As shown, a limit block 113 is provided in the lock hole 111 to limit the rotation angle of the lock core 12, so that each time the key 2 is rotated to open the lock 1, the rotation angle of the key 2 is the same, so as to ensure that the card puller 132 and the card 1311 are stably matched. Among them, the lock body 11 and the limit block 113 can be cast in one piece.

[0053] like Figure 1 and Figure 6As shown, when installing the triangular lock, the entire lock 1 is embedded in the interior of the locking structure, and only a lock hole 111 is left on the surface plate 3, which serves as an installation carrier and protective layer for the lock 1. In order to improve the installation stability and sealing effect of the lock 1, the exposed end face edge of the lock body 11 is extended outward to form an outer flange 114 on the outside of the locking structure, and is pressed on the outer surface of the surface plate 3; at the same time, a fastening sheet 115 is sleeved on the lock body 11 inside the locking structure, and the fastening sheet 115 is pressed against the inner surface of the surface plate 3, and the outer flange 114 and the fastening sheet 115 are clamped on both sides of the surface plate 3 to enhance stability and sealing effect.

[0054] The various technical features in the above implementation modes can be combined arbitrarily as long as there is no conflict or contradiction between the combinations of features. However, due to space limitations, they are not described one by one.

[0055] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A triangular lock device, characterized in that: The invention relates to a lock set and a key which cooperate with each other, wherein the lock set comprises a lock body, a lock core and an anti-slipping mechanism; the lock body is provided with a lock hole which passes through both ends thereof, and the side wall of the lock body is also provided with a through groove which is connected to the lock hole; one end of the lock core is rotatably embedded in the lock hole; the anti-slipping mechanism comprises an elastic clamp which is telescopically arranged in the through groove and a card pusher which is fixedly installed on the lock core; the card pusher pushes the elastic clamp with the rotation of the lock core, so that the elastic clamp is extended into the lock hole to restrict the key from slipping out; the elastic clamp comprises a card and a spring; the card is telescopically arranged in the through groove, a protrusion is arranged on the surface of the card, and the spring moves along the card The sheet is arranged in the direction of extension and contraction, and one end of the sheet is connected to the protrusion, and the other end is connected to the through groove; the end face of the card protruding from the side wall of the lock body is a convex arc surface; the card puller includes a fixed beam and a top block; the top block is connected to the lock core through the fixed beam and is suspended on the side of the lock body, and the side wall of the top block facing the lock body is a guiding inclined surface or a guiding arc surface, and is in tangential contact with the card; the key includes a handle body, a rod body and a chimeric head connected in sequence; the chimeric head is provided with a triangular groove for matching and connecting with the lock core, the diameter of the rod body is smaller than the diameter of the chimeric head, and the connection between the two forms a clamp position, and the card is pressed against the clamp position to limit the key from coming out.

2. The triangular lock device according to claim 1, characterized in that: The lock core comprises a lock rod and a triangular head arranged at one end of the lock rod. The lock rod is a quadrangular prism, two opposite side surfaces of which are planes, and the other two opposite side surfaces are convex arc surfaces and are formed with threads.

3. The triangular lock device according to claim 2, characterized in that: The lock also includes a trigger paddle, which is provided with a strip groove; the lock rod passes through the strip groove and its two plane side walls correspond to the two inner walls of the strip groove, and the trigger paddle is fixed to the lock rod by two nuts.

4. The triangular lock device according to claim 1, characterized in that: An arc groove is provided at one end of the card extending into the lock hole.

5. The triangular lock device according to claim 1, characterized in that: A limit block is embedded in the lock hole, and one end of the lock core is embedded in the limit block to limit the rotation angle of the lock core.

6. The triangular lock device according to claim 1, characterized in that: The end surface edge of the lock body is formed with an outer flange, and the outer wall of the lock body is also sleeved with a fastening sheet, and the fastening sheet cooperates with the outer flange to fix the lock body.

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