Elevator limit switch protection device

Abstract

The utility model provides a kind of elevator limit switch protection device, it is related to limit switch technical field, including including the storage cavity inside protection shell and the detachable cover plate of being installed in the top of protection shell, the receiving plate is arranged in the storage cavity, and soft pad is laid on receiving plate;The elastic structure that drives receiving plate to lift is further provided in the protection shell, and the elastic structure includes the movable plate of being installed in the both sides of receiving plate and the installation slot of being opened in the inside of protection shell;The utility model is pushed up by the setting of elastic structure, to realize the automatic separation of cover plate and protection shell on the one hand, the quick disassembly of protection device is facilitated, on the other hand, movable plate will drive receiving plate synchronous rising, so that receiving plate will limit switch upwardly lift, so that the taking out use of limit switch is facilitated, greatly improve the practicability of protection device, facilitate the use of protection device.

Description

Technical Field

[0001] This utility model relates to the field of limit switch technology, and in particular to an elevator limit switch protection device. Background Technology

[0002] A limit switch is a switch that uses metal contacts to open or close a circuit, interrupt current flow, or divert current to another circuit. In elevator safety systems, limit switches are typically used to ensure safe elevator operation. Because elevator limit switches are precision components, they are usually protected by being stored in a storage box during transport to prevent damage.

[0003] Existing patent documents, such as application number 201921349970.7, disclose an elevator limit switch protection device. This protection device uses a box body, a first spring, a support plate, a first foam board, a lower placement groove, a box cover, a second foam board, an upper placement groove, a slot, a receiving groove, a locking rod, a fixing plate, a second spring, and a moving plate to cooperate. It has the advantage of providing buffer protection for the limit switch, solving the problem that the existing elevator limit switch storage box has a simple structure and does not have a shock absorption function. When shaken during transportation, the limit switch will shake and collide with the inner wall of the storage box, which can easily cause damage to the limit switch. However, when removing the cover of the aforementioned protective device, it is generally necessary to pull the lever first and then pull the cover upwards to remove it. Furthermore, when removing and installing the limit switch, it is often necessary for the operator to manually remove the limit switch from the box. Therefore, this not only makes the disassembly and assembly of the protective device cumbersome and prevents quick disassembly and assembly, but also makes it inconvenient to remove and install the limit switch, thus affecting the practicality of the protective device and hindering its protective use of the limit switch. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model proposes an elevator limit switch protection device.

[0005] The technical solution of this utility model is implemented as follows:

[0006] An elevator limit switch protection device includes a protective shell with an internal storage cavity and a detachable cover plate installed on the top of the protective shell. A receiving plate is provided in the storage cavity, and a soft pad is laid on the receiving plate.

[0007] The protective housing is also provided with an elastic structure that drives the support plate to rise and fall. The elastic structure includes movable plates installed on both sides of the support plate and an installation groove opened inside the protective housing. The inner wall of the protective housing is also provided with a slot that connects the installation groove and the storage cavity. One end of the movable plate extends through the slot into the installation groove. A spring is installed in the installation groove, and the top end of the spring is fixedly connected to the bottom of the movable plate.

[0008] Preferably, insert plates are installed at the four corners of the bottom of the cover plate, the top of the protective housing has insertion holes for insert plates to be inserted, and the insertion holes are connected to the mounting grooves. Bolts are screwed onto both sides of the protective housing, and screw holes that cooperate with the bolts are opened on the insert plates.

[0009] Preferably, the top of the protective housing is provided with a positioning protrusion, and the bottom of the cover plate is provided with a positioning groove that cooperates with the positioning protrusion.

[0010] Preferably, a positioning rod is installed on the top of the movable plate, and a positioning hole is provided at the bottom of the insert plate for the positioning rod to be inserted.

[0011] Preferably, the storage cavity is further provided with a shock-absorbing structure, and the shock-absorbing structure includes a buffer plate. A plurality of shock-absorbing springs and damping rods arranged in a rectangular array are connected between the bottom of the buffer plate and the bottom of the inner shell. The shock-absorbing springs are sleeved on the outside of the damping rods, and the support plate is installed on the top of the buffer plate.

[0012] Preferably, a guide groove is provided on the outer wall of the positioning rod, and a guide strip that cooperates with the guide groove is installed on the inner wall of the positioning hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, through the setting of the elastic structure, allows the insert plate to be pushed upwards during the disassembly of the cover plate and the protective shell, so that the insert plate can be moved out of the insertion hole, thereby realizing the automatic separation of the cover plate and the protective shell, facilitating the quick disassembly of the protective device and the removal and use of the limit switch. On the other hand, the movable plate will drive the receiving plate to rise synchronously, so that the receiving plate will lift the limit switch upwards, thereby further facilitating the removal and use of the limit switch, greatly improving the practicality of the protective device and making it easier to use.

[0015] 2. By setting up positioning rods and positioning holes, this utility model can quickly position the movable plate and the insert plate during the assembly of the cover plate and the protective shell. This facilitates the insert plate to press the movable plate down stably and also helps the movable plate to push the insert plate out stably when the cover plate is disassembled. This enables stable and quick assembly and disassembly of the cover plate and the protective shell, and facilitates the removal and placement of the limit switch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural diagram illustrating the disassembly of the protective casing and cover plate.

[0019] Figure 3 for Figure 1 A partial sectional view;

[0020] Figure 4 for Figure 2 A partial sectional view of the inner protective casing;

[0021] Figure 5 for Figure 3 Enlarged view of point A in the image;

[0022] Figure 6 for Figure 4 Enlarged view of point B in the image.

[0023] In the diagram: 1. Protective housing; 2. Cover plate; 3. Bolt; 4. Positioning protrusion; 5. Soft pad; 6. Insert plate; 7. Insertion hole; 8. Support plate; 9. Buffer plate; 10. Shock-absorbing spring; 11. Damping rod; 12. Movable plate; 13. Spring; 14. Positioning rod; 15. Groove; 16. Mounting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figures 1-6 An elevator limit switch protection device is shown, including a protective housing 1 with an internal storage cavity and a detachable cover plate 2 installed on the top of the protective housing 1. A receiving plate 8 is provided in the storage cavity, and a soft pad 5 is laid on the receiving plate 8.

[0026] The protective housing 1 is also provided with an elastic structure that drives the support plate 8 to rise and fall. The elastic structure includes movable plates 12 installed on both sides of the support plate 8 and mounting grooves 16 opened inside the protective housing 1. The inner wall of the protective housing 1 is also provided with a slot 15 that connects the mounting groove 16 to the storage cavity. One end of the movable plate 12 extends through the slot 15 into the mounting groove 16. A spring 13 is installed in the mounting groove 16, and the top end of the spring 13 is fixedly connected to the bottom of the movable plate 12.

[0027] Specifically, regarding how to assemble and disassemble the aforementioned cover plate 2 and protective housing 1, such as... Figures 1-3 As shown, insert plates 6 are installed at the four corners of the bottom of the cover plate 2. The top of the protective housing 1 has an insertion hole 7 for inserting the insert plate 6, and the insertion hole 7 is connected to the mounting groove 16. Bolts 3 are screwed on both sides of the protective housing 1, and screw holes that cooperate with the bolts 3 are opened on the insert plate 6.

[0028] As described above, when carrying or transporting the limit switch, the limit switch can first be placed into the storage cavity inside the protective housing 1. At this time, the receiving plate 8 will receive the limit switch. Then, the cover plate 2 will be placed on the protective housing 1. At this time, the insert plate 6 will be inserted into the insertion hole 7, and the insert plate 6 will press down the movable plate 12, causing the movable plate 12 to move downward along the slot 15 and compress the spring 13, causing the spring 13 to contract. Then, the bolt 3 will be screwed into the screw hole to screw and fix the insert plate 6, completing the installation of the cover plate 2 and the protective housing 1. Then, the limit switch can be carried or transported through the protective housing 1.

[0029] Secondly, when the limit switch needs to be removed for installation and use, the bolt 3 can be unscrewed. At this time, the insert plate 6 is no longer restricted. Then, under the action of the spring 13, the movable plate 12 is pushed to move upward along the slot 15. At this time, the movable plate 12 pushes the insert plate 6 upward, so that the insert plate 6 is removed from the insertion hole 7. This realizes the automatic separation of the cover plate 2 and the protective housing 1, which facilitates the quick disassembly of the protective device and is conducive to the removal and use of the limit switch. At the same time, the movable plate 12 will drive the receiving plate 8 to rise synchronously. At this time, the receiving plate 8 lifts the limit switch upward, so that the limit switch is removed from the storage cavity, which further facilitates the removal and use of the limit switch.

[0030] Furthermore, in order to achieve rapid positioning during the assembly of the cover plate 2 and the protective housing 1, in this embodiment, as follows: Figure 2 and Figure 3 As shown, the top of the protective housing 1 is equipped with a positioning protrusion 4, and the bottom of the cover plate 2 is provided with a positioning groove that matches the positioning protrusion 4.

[0031] Meanwhile, in this embodiment, such as Figure 2 , Figure 4 and Figure 6As shown, a positioning rod 14 is installed on the top of the movable plate 12, and a positioning hole for the positioning rod 14 to be inserted is opened at the bottom of the insert plate 6.

[0032] When the cover plate 2 is installed on the protective housing 1, the insert plate 6 will press down the movable plate 12. At this time, the positioning rod 14 on the movable plate 12 will be inserted into the positioning hole to quickly position the movable plate 12 and the insert plate 6. This makes it easy for the insert plate 6 to press down the movable plate 12 stably, and also makes it easier for the movable plate 12 to push out the insert plate 6 stably when the cover plate 2 is disassembled. This achieves stable and quick disassembly and assembly between the cover plate 2 and the protective housing 1, and facilitates the removal and placement of the limit switch.

[0033] Furthermore, to facilitate the stable and rapid insertion of the positioning rod 14 into the positioning hole, such as... Figure 4 and Figure 6 As shown, a guide groove is provided on the outer wall of the positioning rod 14, and a guide strip that cooperates with the guide groove is installed on the inner wall of the positioning hole.

[0034] Additionally, in this embodiment, as Figure 3 and Figure 4 As shown, the storage cavity is also equipped with a shock-absorbing structure, which includes a buffer plate 9. Multiple shock-absorbing springs 10 and damping rods 11 arranged in a rectangular array are connected between the bottom of the buffer plate 9 and the bottom of the inner shell 1. The shock-absorbing springs 10 are sleeved on the outside of the damping rods 11, and the receiving plate 8 is installed on the top of the buffer plate 9.

[0035] During the carrying or transportation of the limit switch, when the protective housing 1 is subjected to vibration, the buffer plate 9 absorbs the vibration and dissipates the energy of the receiving plate 8 through the shock-absorbing spring 10 and the damping rod 11, thereby providing shock protection for the limit switch and preventing it from being damaged by collision during carrying or transportation, which in turn helps to ensure the normal use of the limit switch.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elevator limit switch protection device, characterized by: It includes a protective shell (1) with an internal storage cavity and a cover plate (2) that can be detachably installed on the top of the protective shell (1). A receiving plate (8) is provided in the storage cavity, and a soft pad (5) is laid on the receiving plate (8). The protective housing (1) is also provided with an elastic structure that drives the support plate (8) to rise and fall. The elastic structure includes movable plates (12) installed on both sides of the support plate (8) and an installation groove (16) opened inside the protective housing (1). The inner wall of the protective housing (1) is also provided with a slot (15) that connects the installation groove (16) with the storage cavity. One end of the movable plate (12) extends through the slot (15) into the installation groove (16). A spring (13) is installed in the installation groove (16), and the top end of the spring (13) is fixedly connected to the bottom of the movable plate (12).

2. The elevator limit switch protection device of claim 1, wherein: Insert plates (6) are installed at the four corners of the bottom of the cover plate (2). The top of the protective shell (1) is provided with insertion holes (7) for inserting the insert plates (6), and the insertion holes (7) are connected to the mounting groove (16). Bolts (3) are screwed on both sides of the protective shell (1). The insert plates (6) are provided with screw holes that cooperate with the bolts (3).

3. The elevator limit switch protection device of claim 1, wherein: The top of the protective housing (1) is equipped with a positioning protrusion (4), and the bottom of the cover plate (2) is provided with a positioning groove that matches the positioning protrusion (4).

4. The elevator limit switch protection device of claim 2, wherein: The top of the movable plate (12) is equipped with a positioning rod (14), and the bottom of the insert plate (6) is provided with a positioning hole for the positioning rod (14) to be inserted.

5. The elevator limit switch protection device of claim 1, wherein: The storage cavity is also provided with a shock-absorbing structure, which includes a buffer plate (9). A plurality of shock-absorbing springs (10) and damping rods (11) arranged in a rectangular array are connected between the bottom of the buffer plate (9) and the bottom of the inner shell (1). The shock-absorbing springs (10) are sleeved on the outside of the damping rods (11). The receiving plate (8) is installed on the top of the buffer plate (9).

6. The elevator limit switch protection device of claim 4, wherein: The outer wall of the positioning rod (14) is provided with a guide groove, and the inner wall of the positioning hole is provided with a guide strip that cooperates with the guide groove.

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