Non-contact safety door switch lock cylinder

Abstract

The utility model discloses a non-contact safety door switch lock cylinder which comprises a positioning shell, a left detection piece, a right detection piece, a left magnetic positioning pin and a right magnetic positioning pin are arranged in the positioning shell, the left magnetic positioning pin and the right magnetic positioning pin are matched with the left detection piece and the right detection piece for detection, and the left magnetic positioning pin and the right magnetic positioning pin are positioned on a push-pull block. The push-pull block is movably installed in the middle of the positioning shell, the bottom of the push-pull block is supported through the compression spring, a plug pin of the switch lock cylinder is fastened to the push-pull block, the plug pin is sleeved with the iron core, and the compression spring pushes the plug pin, the push-pull block, the left magnetic positioning pin and the right magnetic positioning pin to move synchronously while the iron core moves under the action of external attraction. The left detection piece and the right detection piece judge the position state of the switch lock cylinder by electronically sensing the positions of the left magnetic positioning pin and the right magnetic positioning pin. According to the switch lock cylinder, the position of the lock cylinder is detected in an electronic induction non-contact structure mode, the speed is higher, positioning and signal output are more accurate, and the service life of the lock cylinder can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of safety door lock cores, in particular to a non-contact safety door switch lock core. Background Art

[0002] An industrial safety door switch is a safety door lock used to ensure that important cabinets are in a locked, frozen, and closed state during production and maintenance processes to prevent accidents. The traditional positioning detection scheme for a safety door switch lock core uses the principle of mechanical contact for position detection. This method has a complex structure, high installation difficulty and cost, and due to long-term contact wear, it will reduce the service life of the lock core to a certain extent. Content of the Utility Model

[0003] In view of the above technical problems, the utility model provides a non-contact safety door switch lock core. The safety door switch lock core uses a magnetic induction non-contact structure to detect the position of the lock core, with higher speed, more accurate positioning and signal output. It can avoid wear between detection parts, improve the service life of the lock core, and has a simple structure and convenient installation.

[0004] A non-contact safety door switch lock core includes a positioning housing. Inside the positioning housing, there are a left detection part and a right detection part, as well as a left magnetic positioning pin and a right magnetic positioning pin that cooperate with the left detection part and the right detection part for detection. The left magnetic positioning pin and the right magnetic positioning pin are positioned on a push-pull block. The push-pull block is movably installed in the middle of the positioning housing and is supported by a compression spring at the bottom. The bolt of the switch lock core is fastened to the push-pull block. An iron core is sleeved on the bolt. When the iron core moves under the action of an external suction force, the compression spring pushes the bolt, the push-pull block, and the left and right magnetic positioning pins to move synchronously. The left detection part and the right detection part judge the position state of the switch lock core by electronically sensing the positions of the left magnetic positioning pin and the right magnetic positioning pin.

[0005] As a preference of the above technical solution, the left detection part and the right detection part are arranged in a staggered manner. Correspondingly, the left magnetic positioning pin and the right magnetic positioning pin are arranged in a staggered manner.

[0006] As a preference of the above technical solution, the side of the positioning housing is symmetrically provided with a slot one for clamping the left detection part and the right detection part.

[0007] As a preference of the above technical solution, a slot two is provided on the same side as the slot one in the middle of the positioning housing. A lock core frame is clamped in the slot two. The push-pull block is slidably limited in the lock core frame.

[0008] As a preference of the above technical solution, the top of the push-pull block is provided with a clamping groove for limiting the bolt.

[0009] As a preferred embodiment of the above technical solution, a positioning column for positioning the compression spring is fixed at the bottom of the lock core frame.

[0010] The beneficial effects of the utility model are:

[0011] Compared with the traditional mechanical contact switch lock core, this switch lock core adopts magnetic induction non-contact form. While realizing efficient detection of the lock core position, the detection sensing modules are always non-contact, avoiding damage caused by friction after contact, which can greatly improve the service life of the safety lock core. At the same time, the structural module is simple and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0013] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0014] The accompanying drawings are marked as follows: 1-positioning housing, 2-left detection piece, 3-right detection piece, 4-left magnetic positioning pin, 5-right magnetic positioning pin, 6-push-pull block, 7-compression spring, 8-pin, 9-slot one, 10-slot two, 11-lock core frame, 12-clamping slot, 13-positioning column, 14-scale line. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 , Figure 2 The non-contact safety door switch lock core comprises a positioning shell 1, wherein the positioning shell 1 is provided with a left detection member 2 and a right detection member 3, and a left magnetic positioning pin 4 and a right magnetic positioning pin 5 for detecting in cooperation with the left detection member 2 and the right detection member 3, wherein the left magnetic positioning pin 4 and the right magnetic positioning pin 5 are positioned on a push-pull block 6, wherein the push-pull block 6 is movably mounted in the middle of the positioning shell 1, and the bottom is supported by a compression spring 7, and a latch 8 of the switch lock core is fastened to the push-pull block 6, and an iron core is sleeved on the latch 8, and while the iron core moves under the action of external suction, the compression spring 7 pushes the latch 8, the push-pull block 6 and the left magnetic positioning pin 4 and the right magnetic positioning pin 5 to move synchronously, and the left detection member 2 and the right detection member 3 judge the position state of the switch lock core by electronically sensing the positions of the left magnetic positioning pin 4 and the right magnetic positioning pin 5.

[0017] In this embodiment, the left detection member 2 and the right detection member 3 are arranged in a staggered manner. Correspondingly, the left magnetic positioning pin 4 and the right magnetic positioning pin 5 are arranged in a staggered manner.

[0018] In this embodiment, the side surface of the positioning housing 1 is symmetrically provided with a first slot 9 for clamping the left detection member 2 and the right detection member 3.

[0019] In this embodiment, a second slot 10 is provided in the middle of the positioning housing 1 on the same side as the first slot 9. A lock core frame 11 is clamped in the second slot 10, and the push-pull block 6 is slidably limited in the lock core frame 10.

[0020] In this embodiment, a clamping groove 12 for limiting the bolt 8 is provided at the top of the push-pull block 6.

[0021] In this embodiment, a positioning post 13 for positioning the compression spring 7 is fixed at the bottom of the lock core frame 11.

[0022] It should be added that this safety door switch lock core is only a part of the overall structure of the safety lock. After the external coil in the switch lock core is energized, it generates a suction force on the iron core (the iron core is not shown in the drawings), thereby changing the positions of the bolt 8, the push-pull block 6, and the left magnetic positioning pin 4 and the right magnetic positioning pin 5. At the same time, after the lock tongue is inserted into the safety lock, the push-pull block 6 will move under the action of the compression spring 7 (changing the positions of the bolt 8 and the push-pull block 6 by inserting the lock tongue is a conventional structure of the safety lock and will not be described in detail here), that is, the positions of the left magnetic positioning pin 4 and the right magnetic positioning pin 5 will each change once when the iron core is subjected to suction force and the lock tongue is inserted. The left detection member 2 and the right detection member 3 judge the position state of the switch lock core by sensing the positions of the left magnetic positioning pin 4 and the right magnetic positioning pin 5.

[0023] In this embodiment, three scale lines 14, namely upper, middle, and lower, are provided on the lock core frame 11. The lower scale line 14 represents the state where the compression spring 7 is compressed to the maximum. At this time, the external coil is in a power-off state and the lock tongue is not inserted into the lock core. At this time, the lower edge of the push-pull block 6 is flush with the lower scale line 14, indicating state one; the middle scale line 14 represents the state where the external coil is in a power-off state and the lock tongue is inserted into the lock core. At this time, the lower edge of the push-pull block 6 is flush with the middle scale line 14, indicating state two; the upper scale line 14 represents the state where the external coil is energized and the lock tongue is inserted into the lock core. At this time, the lower edge of the push-pull block 6 is flush with the lower scale line 14, indicating state three, and at this time it means that the lock core is completely locked.

[0024] In this embodiment, the left detection member 2 is used to sense the signal of the left magnetic positioning pin 4, and the right detection member 3 is used to sense the signal of the right magnetic positioning pin 5. Therefore, multiple signal cut definitions can be set according to the situation to reflect the above three states of the lock core. For example:

[0025] The left detection component 2 and the right detection component 3 not detecting signals simultaneously represent state one; the left detection component 2 sensing the signal of the left magnetic positioning pin 4 and the right detection component 3 not sensing the signal of the right magnetic positioning pin 5 represent state two; the left detection component 2 not sensing the signal of the left magnetic positioning pin 4 and the right detection component 3 sensing the signal of the right magnetic positioning pin 5 represent state three.

[0026] The left detection component 2 and the right detection component 3 not detecting signals simultaneously represent state one; the left detection component 2 not sensing the signal of the left magnetic positioning pin 4 and the right detection component 3 sensing the signal of the right magnetic positioning pin 5 represent state two; the left detection component 2 sensing the signal of the left magnetic positioning pin 4 and the right detection component 3 not sensing the signal of the right magnetic positioning pin 5 represent state three.

[0027] The above are only two signal cuts for defining the state of the switch lock core listed in this application, and any signal cuts that can satisfy the above three easily recognizable signal cuts for the switch lock core can be used for this switch lock core.

[0028] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A non-contact safety door switch lock core, characterized in that: It includes a positioning housing, inside which there are a left detector, a right detector, a left magnetic positioning pin and a right magnetic positioning pin that cooperate with the left and right detectors for detection. The left and right magnetic positioning pins are positioned on a push-pull block. The push-pull block is movably installed in the middle of the positioning housing and is supported by a compression spring at the bottom. The bolt of the switch lock core is fastened to the push-pull block. An iron core is sleeved on the bolt. When the iron core moves under the action of an external suction force, the compression spring pushes the bolt, the push-pull block, the left and right magnetic positioning pins to move synchronously. The left and right detectors judge the position state of the switch lock core by electronically sensing the positions of the left and right magnetic positioning pins.

2. The non-contact safety door switch lock core according to claim 1, wherein: The left detector and the right detector are arranged in a staggered manner. Correspondingly, the left magnetic positioning pin and the right magnetic positioning pin are arranged in a staggered manner.

3. The non-contact safety door switch lock cylinder according to claim 1, characterized in that: On the side surface of the positioning housing, there are symmetrically arranged slots one for clamping the left and right detectors.

4. The non-contact safety door switch lock core according to claim 3, wherein: On the same side as the slot one in the middle of the positioning housing, there is a slot two. A lock core frame is clamped in the slot two. The push-pull block is slidably limited in the lock core frame.

5. The non-contact safety door switch lock core according to claim 1, wherein: On the top of the push-pull block, there is a clamping groove for limiting the bolt.

6. The non-contact safety door switch lock cylinder according to claim 4, characterized in that: At the bottom of the lock core frame, there is a positioning post for positioning the compression spring.

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