A fixing structure for an air switch

Abstract

The utility model discloses a kind of fixed mounting structures for air switch, including shell, center fixing device and end fixing device, shell back center vertical inlay center fixing device, it is composed of the outer sleeve of upper end opening, coaxial sliding inner sleeve, top pressing column and the array of arcuate clamping jaw articulated in inner sleeve, clamping jaw protrudes to pressing column, shell back upper and lower end is equipped with the end fixing device of vertical sliding, including the clamping block and the button adjusting structure with elastic locking function engaged with guide rail edge, when installing, wall oppression pressing column drives inner sleeve axial sliding, through the cooperation of heart-shaped trajectory groove and connecting rod makes clamping jaw rotate and spread and tightly resist guide rail back, while end clamping block synchronously clamps guide rail upper and lower edge, forms three point distribution type constraint, and end fixing device height adjustment is positioned by releasing lock catch through pressing button, realize the self-adapting adjustment of guide rail height and tool-free single pressing locking.

Description

Technical Field

[0001] This utility model relates to the field of air switch technology, specifically to a fixed installation structure for an air switch. Background Technology

[0002] In the utility model patent application with publication number CN220963178U, publication date May 14, 2024, entitled "An Air Switch Installation Structure", this utility model relates to an air switch installation structure. The key technical points of the solution are: an air switch installation structure includes an installation box placed in a cavity, an air switch placed inside the installation box, two pressure plates placed inside the installation box, square grooves formed on the upper inner wall and the lower inner wall of the installation box, springs connected to the inner walls of the square grooves, a locking block connected to one end of the springs, the outer wall of the locking block slidingly connected to the square groove, and two support members provided on the outer walls of the two pressure plates, the support members being used to support the upper pressure plate. The advantages are: the air switch is placed against the inner wall of the mounting box, and the air switch is located inside the pressure plate, so that the pressure plate squeezes the air switch. The support is used to support the pressure plate above, so that the two pressure plates are integrated to squeeze the air switch. Then, the locking block is released and the locking block is pushed out by the spring, so that the locking block blocks the outer wall of the pressure plate, thereby squeezing and fixing the air switch, achieving the effect of convenient installation.

[0003] In the aforementioned patents or prior art, air switches generally adopt rail mounting. The mainstream fixing method is to set a fixing clip or screw hole on the back of the air switch to directly engage with the rail. However, the position of such structure is not adjustable and can only be adapted to a single standard height rail. It is not compatible with non-standard or special size rails. Although screw fastening can achieve adaptation by replacing the mounting plate, it requires disassembling the parts and is cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide a fixed installation structure for an air switch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed installation structure for an air switch, comprising: a housing, a central fixing device, and an end fixing device;

[0006] The housing is vertically set, and a central fixing device is embedded in the center of the back of the housing. The central fixing device is perpendicular to the back of the housing. The upper and lower ends of the back of the housing are respectively provided with end fixing devices. The end devices can slide vertically along the housing to clamp the edges of guide rails of different heights. The central fixing device can fix the center of the back of the housing to the guide rail. The air switch and the guide rail are fixedly installed at three points through the central fixing device and the upper and lower end fixing devices.

[0007] The central fixing device includes an outer sleeve, an inner sleeve, a pressing column, and a clamp. The outer sleeve is vertically embedded in the center of the back of the housing and is a groove with an open top. The inner sleeve is coaxially arranged with the outer sleeve and can slide inside the outer sleeve. A clamp is provided at the top of the inner sleeve. The clamp consists of multiple arc-shaped bars arranged in a circular array along the axis of the inner sleeve. The center of each arc-shaped bar is hinged to the top edge of the inner sleeve. A pressing column is fixedly connected to the center of the top of the inner sleeve. The height of the pressing column is higher than that of the clamp. When the pressing column is pressed by the wall, it drives the inner sleeve to slide vertically toward the air switch, thereby pushing the clamp to rotate and unfold. The end of the clamp is in close contact with the back of the guide rail, forming a fixed installation with the guide rail.

[0008] A coaxial first spring is provided on the central axis of the outer sleeve. The first end of the first spring is fixedly connected to the center of the bottom wall of the outer sleeve, and the second end of the first spring is fixedly connected to the center of the bottom end of the inner sleeve.

[0009] The outer wall of the inner sleeve is provided with recessed heart-shaped grooves on both sides, and the heart-shaped grooves are hollow track grooves.

[0010] The bottom of the outer sleeve is fixedly connected to a base, and both sides of the inner sleeve are provided with connecting rods. The first end of the connecting rod is fixedly connected to the side wall of the base, and the second end of the connecting rod can slide inside the heart-shaped groove. When the gripper is extended, the second end of the connecting rod is located at the top recess of the heart-shaped groove, and when the gripper is retracted, the second end of the connecting rod is located at the bottom sharp corner of the heart-shaped groove.

[0011] The end fixing device includes a clamping block and a button. The clamping block is slidably connected to the back of the housing. The end of the clamping block can clamp the edge of the guide rail. The top of the clamping block is provided with a button. The button is cylindrical and the top of the button is a semi-circular head. One half of the button is fixedly connected to the top of the clamping block, and the other half of the button can slide on the back of the housing.

[0012] Vertical semicircular grooves are provided at the top and bottom of the back of the housing. Multiple recessed fixing holes are arranged vertically on the groove wall of each semicircular groove. A vertical elastic fixing member is embedded in the bottom of the button facing the housing. The top of the elastic fixing member is a hemisphere, and the size of the hemisphere matches the fixing hole. A vertical second spring is provided in the semicircular groove.

[0013] The elastic fastener includes an end, a third spring, and an insert post. The insert post is vertically embedded inside the button. The top of the insert post has a groove along its own axis. The end is hemispherical and matches the size of the fixing hole. The end is coaxially arranged with the insert post. The end is located at the top of the insert post and can slide on the groove inside the insert post. A coaxial third spring is provided between the end and the insert post.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the fixed installation structure of this air switch is reasonable and has the following advantages:

[0015] (1) This technical solution solves the problem of insufficient adaptability of traditional solutions to guide rail height by using a sliding end fixing device. The end fixing devices set at the upper and lower ends of the back of the air switch can move freely in the vertical direction. After the user adjusts the position of the device according to the actual guide rail size, it can be locked without disassembling parts or replacing accessories. This ensures that a balanced clamping force is applied to the upper and lower edges of guide rails of different specifications. It is compatible with standard size guide rails and can also be adapted to non-standard or irregular guide rails, significantly reducing the installation failure rate caused by the difference in guide rail height and greatly improving installation efficiency and equipment versatility.

[0016] (2) The technical solution realizes the tool-free installation experience of users based on the linkage locking mechanism of the heart-shaped track groove. When the air switch is pressed, the inner sleeve of the central fixing device is pressed down and the connecting rod slides along the heart-shaped groove to the bottom corner to form a mechanical dead point. At this time, the outer sleeve pushes the bow-shaped claw strip to rotate and unfold, so that it is tightly against the back of the guide rail. At the same time, the clamping blocks at both ends complete the engagement with the guide rail, forming a three-point distributed constraint of "central expansion locking + double-sided clamping". This process is automatically completed by a single press. When unlocking, pressing again will trigger the connecting rod to slide into the top recess of the heart-shaped groove, simplifying the installation steps to a single action. Furthermore, the rigid dead point locking eliminates the displacement risk caused by vibration. Its stability exceeds that of traditional buckles that rely on elastic deformation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention before installation;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention after installation;

[0019] Figure 3 This is a three-dimensional structural diagram of the central fixing device of this utility model;

[0020] Figure 4 This is a cross-sectional view of the central fixing device of this utility model before installation;

[0021] Figure 5 This is a cross-sectional view of the central fixing device of this utility model after installation;

[0022] Figure 6 This is an exploded view of the shell and end fixing device in this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the end fixing device of this utility model;

[0024] Figure 8This is a three-dimensional structural diagram of the elastic fastener of this utility model;

[0025] In the diagram: 1. Housing; 11. Fixing hole; 2. Central fixing device; 21. Outer sleeve; 22. Inner sleeve; 221. Heart-shaped groove; 23. First spring; 24. Connecting rod; 25. Gripper; 251. Bow-shaped bar; 26. Pressing post; 27. Base; 3. End fixing device; 31. Clamping block; 32. Button; 33. Second spring; 34. Elastic fastener; 341. End; 342. Third spring; 343. Embedded post. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-8 The present invention provides a technical solution as follows:

[0028] Example 1:

[0029] In this embodiment, a fixed mounting structure for an air switch is provided, including: a housing 1, a central fixing device 2, and an end fixing device 3;

[0030] The housing 1 is vertically arranged, and a central fixing device 2 is embedded in the center of the back of the housing 1. The central fixing device 2 is perpendicular to the back of the housing 1. The upper and lower ends of the back of the housing 1 are respectively provided with end fixing devices 3. The end devices can slide vertically along the housing 1 to clamp the edges of guide rails of different heights. The central fixing device 2 can fix the center of the back of the housing 1 to the guide rail. The central fixing device 2 and the upper and lower end fixing devices 3 make the air switch and the guide rail form a three-point fixed installation.

[0031] The central fixing device 2 includes an outer sleeve 21, an inner sleeve 22, a pressing post 26, and a gripper 25. The outer sleeve 21 is vertically embedded in the center of the back of the housing 1. The outer sleeve 21 is a groove with an open top. The inner sleeve 22 is coaxially arranged with the outer sleeve 21 and can slide inside the outer sleeve 21. A gripper 25 is provided at the top of the inner sleeve 22. The gripper 25 is a circular array of multiple arc-shaped bars 251 along the axis of the inner sleeve 22. The center of each arc-shaped bar 251 is hinged to the top edge of the inner sleeve 22. A pressing post 26 is fixedly connected to the top center of the inner sleeve 22. The height of the pressing post 26 is higher than that of the gripper 25, so that when the pressing post 26 is pressed by the wall, it drives the inner sleeve 22 to slide vertically toward the air switch. Thus, the outer sleeve 21 pushes the gripper 25 to rotate and unfold. The end of the gripper 25 is close to the back of the guide rail, forming a fixed installation with the guide rail.

[0032] A first spring 23 is coaxially mounted on the central axis of the outer sleeve 21. The first end of the first spring 23 is fixedly connected to the center of the bottom wall of the outer sleeve 21, and the second end of the first spring 23 is fixedly connected to the center of the bottom end of the inner sleeve 22.

[0033] The inner sleeve 22 has recessed heart-shaped grooves 221 on both sides of its outer wall. The heart-shaped grooves 221 are hollow track grooves.

[0034] The bottom end of the outer sleeve 21 is fixedly connected to the base 27. Both sides of the inner sleeve 22 are provided with connecting rods 24. The first end of the connecting rod 24 is fixedly connected to the side wall of the base 27. The second end of the connecting rod 24 can slide inside the heart-shaped groove 221. When the gripper 25 is unfolded, the second end of the connecting rod 24 is located at the top recess of the heart-shaped groove 221. When the gripper 25 is retracted, the second end of the connecting rod 24 is located at the bottom sharp corner of the heart-shaped groove 221.

[0035] The end fixing device 3 includes a clamping block 31 and a button 32. The clamping block 31 is slidably connected to the back of the housing 1. The end of the clamping block 31 can clamp the edge of the guide rail. The top of the clamping block 31 is provided with a button 32. The button 32 is a cylinder with a semi-circular top. Half of the button 32 is fixedly connected to the top of the clamping block 31, and the other half of the button 32 can slide on the back of the housing 1.

[0036] Vertical semicircular grooves are provided at the top and bottom of the back of the housing 1. Multiple recessed fixing holes 11 are arranged vertically on the groove wall of each semicircular groove. A vertical elastic fixing member 34 is embedded in the bottom of the button 32 facing the housing 1. The top of the elastic fixing member 34 is a hemisphere, and the size of the hemisphere matches the fixing hole 11. A vertical second spring 33 is provided in the semicircular groove.

[0037] The elastic fastener 34 includes an end 341, a third spring 342, and an embedded post 343. The embedded post 343 is vertically embedded inside the button 32. The top of the embedded post 343 has a groove along its own axis. The end 341 is a hemisphere and matches the size of the fixing hole 11. The end 341 and the embedded post 343 are coaxially arranged. The end 341 is located at the top of the embedded post 343 and can slide on the groove in the embedded post 343. A coaxial third spring 342 is provided between the end 341 and the embedded post 343.

[0038] Working principle: When in use, the user first presses the button 32 of the end fixing device 3 at the upper and lower ends of the back of the housing 1 according to the actual height of the target guide rail. This allows the end fixing device 3 at the upper and lower ends to slide vertically along the back of the housing 1. When it moves to the position that matches the height of the guide rail, the button 32 is released. The third spring 342 pushes the end 341 into the corresponding fixing hole 11 to lock it. During this process, the clamping block 31 always maintains a symmetrical posture to ensure that the subsequent clamping force is evenly distributed, thus making it compatible with various guide rail specifications from standard to non-standard, without the need to replace any parts or use tools.

[0039] Secondly, the air switch is aligned with the guide rail and pushed towards the mounting wall. The wall presses the pressing column 26 of the central fixing device 2, driving the inner sleeve 22 to slide axially along the outer sleeve 21. At this time, the end of the connecting rod 24 slides from the top recess of the heart-shaped groove 221 into the bottom sharp corner to form a mechanical dead point. When the inner sleeve 22 moves down, the outer sleeve 21 pushes the bow-shaped bar 251 of the clamp 25 to rotate and unfold around the central hinge point, so that its end is tightly against the back of the guide rail. At the same time, the clamping block 31 of the end fixing device 3 automatically bites the upper and lower edges of the guide rail, forming a three-point distributed constraint of "central expansion locking + double-sided clamping". The whole process is completed in one go by a single pressing action, completely replacing the traditional bolt fastening or step-by-step buckling operation.

[0040] Finally, when the air switch needs to be disassembled, press the pressing post 26 of the center fixing device 2 again. The inner sleeve 22 continues to move down, causing the connecting rod 24 to slide away from the bottom sharp corner dead point along the trajectory of the heart-shaped groove 221. The first spring 23 releases its elastic force to push the inner sleeve 22 to reset, causing the arc-shaped bar 251 of the gripper 25 to retract and disengage from the back of the guide rail. At the same time, press the button 32. The third spring 342 drives the end 341 to retract, causing the elastic fixing member 34 to disengage from the fixing hole 11. The clamping block 31 moves with the housing 1 and releases its grip on the guide rail. The second spring 33 drives the clamping block 31 to reset, causing the clamping block 31 of the end fixing device 3 to automatically disengage from the guide rail along with the housing 1. At this time, the air switch can be removed as a whole by gently pulling it.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixed mounting structure for an air switch, characterized in that, include: The shell (1), the central fixing device (2) and the end fixing device (3); The housing (1) is vertically arranged. The center fixing device (2) is embedded in the center of the back of the housing (1). The center fixing device (2) is perpendicular to the back of the housing (1). The upper and lower ends of the back of the housing (1) are respectively provided with the end fixing device (3). The end device can slide vertically along the housing (1) to clamp the edge of the guide rail at different heights. The center fixing device (2) can fix the center of the back of the housing (1) to the guide rail. The air switch and the guide rail are fixedly installed in a three-point manner through the center fixing device (2) and the end fixing devices (3) at the upper and lower ends. The central fixing device (2) includes: an outer sleeve (21), an inner sleeve (22), a pressing post (26), and a clamping claw (25). The outer sleeve (21) is vertically embedded in the center of the back of the housing (1). The outer sleeve (21) is a groove with an open top. The inner sleeve (22) is coaxially arranged with the outer sleeve (21). The inner sleeve (22) can slide inside the outer sleeve (21). The clamping claw (25) is provided at the top of the inner sleeve (22). The clamping claw (25) consists of multiple arc-shaped strips (251) along the inner sleeve (22). The circular array of the axis of the inner sleeve (22) is hinged at the center of each of the bow-shaped bars (251) to the top edge of the inner sleeve (22). The pressing column (26) is fixedly connected at the top center of the inner sleeve (22). The height of the pressing column (26) is higher than that of the clamp (25), so that when the pressing column (26) is pressed by the wall, it drives the inner sleeve (22) to slide vertically toward the air switch, thereby the outer sleeve (21) pushes the clamp (25) to rotate and unfold. The end of the clamp (25) is close to the back of the guide rail, forming a fixed installation with the guide rail.

2. The fixed mounting structure for an air switch according to claim 1, characterized in that, The outer sleeve (21) is provided with a coaxial first spring (23) on its central axis. The first end of the first spring (23) is fixedly connected to the center of the bottom wall of the outer sleeve (21), and the second end of the first spring (23) is fixedly connected to the center of the bottom end of the inner sleeve (22).

3. The fixed mounting structure for an air switch according to claim 1, characterized in that, The inner sleeve (22) has recessed heart-shaped grooves (221) on both sides of its outer wall. The heart-shaped grooves (221) are hollow track grooves.

4. The fixed mounting structure for an air switch according to claim 3, characterized in that, The bottom end of the outer sleeve (21) is fixedly connected to a base (27). Both sides of the inner sleeve (22) are provided with connecting rods (24). The first end of the connecting rod (24) is fixedly connected to the side wall of the base (27). The second end of the connecting rod (24) can slide inside the heart-shaped groove (221). When the gripper (25) is unfolded, the second end of the connecting rod (24) is located at the top recess of the heart-shaped groove (221). When the gripper (25) is retracted, the second end of the connecting rod (24) is located at the bottom corner of the heart-shaped groove (221).

5. The fixed mounting structure for an air switch according to claim 1, characterized in that, The end fixing device (3) includes a clamping block (31) and a button (32). The clamping block (31) is slidably connected to the back of the housing (1). The end of the clamping block (31) can clamp the edge of the guide rail. The top of the clamping block (31) is provided with the button (32). The button (32) is a cylinder. The top of the button (32) is a semi-circular head. Half of the button (32) is fixedly connected to the top of the clamping block (31). The other half of the button (32) can slide on the back of the housing (1).

6. The fixed mounting structure for an air switch according to claim 5, characterized in that, The upper and lower ends of the back of the housing (1) are respectively provided with vertical semi-circular grooves. Each semi-circular groove has a plurality of recessed fixing holes (11) arranged vertically on its groove wall. The bottom end of the button (32) is embedded with a vertical elastic fixing member (34) on the side facing the housing (1). The top of the elastic fixing member (34) is a hemisphere, and the size of the hemisphere matches the fixing hole (11). A vertical second spring (33) is provided in the semi-circular groove.

7. The fixed mounting structure for an air switch according to claim 6, characterized in that, The elastic fastener (34) includes an end (341), a third spring (342), and an insert post (343). The insert post (343) is vertically embedded inside the button (32). The top of the insert post (343) has a groove along its own axis. The end (341) is a hemisphere and matches the size of the fixing hole (11). The end (341) is coaxially arranged with the insert post (343). The end (341) is located at the top of the insert post (343) and can slide on the groove in the insert post (343). The third spring (342) is coaxially arranged between the end (341) and the insert post (343).

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