Automobile air conditioner pipeline pressing plate

Abstract

This utility model discloses an automotive air conditioning pipe clamping plate, including a plate body, mounting holes and grooves formed on the plate body. The grooves are located above the mounting holes and are concentrically arranged, communicating with the mounting holes. Multiple circumferentially distributed sliding grooves are formed on the bottom wall of the grooves, and sliders are slidably connected inside each groove. The upper ends of the sliders extend to the outside of the grooves and are fixedly connected to clamping blocks. The clamping blocks have an arc-shaped clamping surface on the side near the mounting hole. A rotating ring is also threaded into the groove. When the rotating ring moves downwards, it can push the multiple clamping blocks to clamp the pipe passing through the mounting hole. In this utility model, the pipe is first inserted into the mounting hole with a clearance fit. Then, by screwing the rotating ring into the groove, the rotating ring rotates downwards, and the arc-shaped pressing surface and the arc-shaped contact surface come into contact with each other, pushing the multiple clamping blocks. Finally, the multiple clamping blocks work together to clamp and fix the pipe.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning parts technology, specifically an automotive air conditioning pipe pressure plate. Background Technology

[0002] The automotive air conditioning piping is like the blood vessels of the air conditioning system. It is generally composed of aluminum pipes, air conditioning hoses, and other pipe accessories. Typically, the automotive air conditioning piping is fixed by a pressure plate. How to ensure the reliable fixation of the pressure plate and the pipe connection position has always been a technical problem that those skilled in the art have been trying to solve. In the existing technology, most of them directly use a flat plate structure to press and fix the air conditioning piping.

[0003] Air conditioning pressure plates and pipes are generally connected by an interference fit between the pipe and the pressure plate socket or by welding. However, the above structures have defects. The core of interference fit is "precise size matching" - either insufficient interference will cause loosening (the pipe will move when the vehicle vibrates), or excessive interference will cause assembly difficulties (the outer wall of the pipe will be squeezed and deformed when forcibly pressed, and even cracks will appear). Moreover, during assembly, pressure tools are needed to force the pipe into the pressure plate socket. If the force is not properly controlled, the protective layer (such as galvanized layer, anti-corrosion coating) on ​​the outer wall of the pipe can be damaged, and the exposed metal pipe is prone to rust in the humid environment of the engine compartment. On the other hand, the pressure plate and pipe form an "integrated structure" when welded. If the pipe leaks (such as cracks at the joint) or the pressure plate is damaged (such as deformation due to collision), the welded part must be cut and replaced as a whole, and it is impossible to repair a single part. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an automotive air conditioning pipe pressure plate, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automotive air conditioning pipe pressure plate, comprising a plate body, mounting holes and grooves formed on the plate body, wherein the grooves are located above the mounting holes and are concentrically arranged, the grooves are connected to the mounting holes, and the bottom wall of the grooves is provided with multiple circumferentially distributed sliding grooves, each of which is slidably connected to a slider, the upper end of the sliders extending to the outside of the sliding grooves and being fixedly connected to a clamping block, the clamping block having an arc-shaped clamping surface on the side near the mounting hole, and a rotating ring threaded into the grooves, wherein when the rotating ring moves downwards, it can push the multiple clamping blocks to clamp the pipes passing through the mounting holes.

[0008] Preferably, the inner side of the lower end of the rotating ring is provided with an arc-shaped extrusion surface, and the outer side of the clamping block is provided with an arc-shaped contact surface, and the arc-shaped extrusion surface and the arc-shaped contact surface are in contact.

[0009] Preferably, the outer circumferential sidewall of the swivel ring is provided with an external thread, and the inner sidewall of the groove is provided with an internal thread, wherein the external thread and the internal thread are adapted to each other.

[0010] Preferably, both the groove and the slider are inverted T-shaped structures, and the inner wall of the groove is lubricated by coating with lubricating oil.

[0011] Preferably, the number of clamping blocks is one, and the clamping blocks are distributed at equal intervals around the circumference.

[0012] Preferably, the plate body has a plurality of linearly distributed positioning holes, which are located on one side of the mounting holes.

[0013] (III) Beneficial Effects

[0014] This utility model provides an automotive air conditioning pipe pressure plate, which has the following beneficial effects:

[0015] 1. In this utility model, the pipe is first inserted into the mounting hole with a clearance fit. Then, by screwing the rotating ring into the groove, the rotating ring rotates and descends, and the arc-shaped extrusion surface and the arc-shaped contact surface come into contact with each other, pushing multiple clamping blocks. Finally, the multiple clamping blocks work together to clamp and fix the pipe. This fixing method only requires unscrewing the rotating ring in the opposite direction. After the clamping blocks lose their extrusion force, the pipe can be released and directly pulled out from the mounting hole. There is no need for "cutting and destroying" like welding, nor for "forcefully prying and breaking the pipe" like interference fit. The pipe and the plate can be completely preserved and can still be used normally during secondary assembly, reducing material waste during maintenance.

[0016] 2. In this utility model, the fixing method will generate a "centripetal thrust" on the clamping blocks - regardless of whether the pipe is initially inserted into the center, multiple clamping blocks will move towards the center synchronously under the guidance of the arc-shaped clamping surface, automatically adjusting the pipe to the position of the mounting hole axis, and realizing "self-centering clamping". Attached Figure Description

[0017] Figure 1 This is a front-view perspective view of a pressure plate for an automotive air conditioning pipe, as proposed in this utility model.

[0018] Figure 2 This is a three-dimensional cross-sectional view of a pressure plate for an automotive air conditioning pipe according to the present invention.

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a structural diagram of the rotating ring disassembly state of the pressure plate of an automotive air conditioning pipe proposed in this utility model;

[0021] Figure 5 This utility model presents a structural diagram of the air conditioning pipe installation state of an automotive air conditioning pipe pressure plate.

[0022] In the diagram: 1. Plate; 101. Mounting hole; 102. Groove; 103. Slide; 104. Internal thread; 105. Positioning hole; 2. Slider; 3. Clamping block; 301. Arc-shaped clamping surface; 302. Arc-shaped contact surface; 4. Rotary ring; 401. Arc-shaped extrusion surface; 402. External thread; 5. Pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: an automotive air conditioning pipe pressure plate, including a plate body 1, a mounting hole 101 and a groove 102 opened on the plate body 1. The groove 102 is located above the mounting hole 101 and is concentrically arranged. The groove 102 communicates with the mounting hole 101. The bottom wall of the groove 102 is provided with a plurality of circumferentially distributed sliding grooves 103. A slider 2 is slidably connected inside each sliding groove 103. The upper end of the slider 2 extends to the outside of the sliding groove 103 and is fixedly connected to a clamping block 3. The clamping block 3 has an arc-shaped clamping surface 301 on the side near the mounting hole 101. A rotating ring 4 is also threaded into the groove 102. When the rotating ring 4 moves downward, it can push the plurality of clamping blocks 3 to clamp the pipe 5 passing through the mounting hole 101.

[0025] When fixing the pipe 5, the pipe 5 needs to be inserted into the mounting hole 101 first. Then, by rotating the rotating ring 4, multiple clamping blocks 3 are pushed to move towards the center. This fixing method will generate a "centripetal thrust" on multiple clamping blocks 3. Regardless of whether the pipe 5 is initially centered when inserted, multiple clamping blocks 3 will move towards the center synchronously under the guidance of the arc-shaped clamping surface 301, automatically adjusting the pipe 5 to the axis position of the mounting hole 101, and realizing "self-centering clamping".

[0026] Reference Figure 3 The inner side of the lower end of the rotating ring 4 is provided with an arc-shaped extrusion surface 401, and the outer side of the clamping block 3 is provided with an arc-shaped contact surface 302. The arc-shaped extrusion surface 401 and the arc-shaped contact surface 302 are in contact.

[0027] First, pipe 5 needs to be inserted into mounting hole 101 with a clearance fit. Then, by screwing the rotating ring 4 into the groove 102, the rotating ring 4 rotates and descends. The arc-shaped extrusion surface 401 and the arc-shaped contact surface 302 fit together, pushing multiple clamping blocks 3. Finally, the multiple clamping blocks 3 work together to clamp and fix pipe 5. This fixing method only requires unscrewing the rotating ring 4 in the opposite direction. After the clamping blocks 3 lose their extrusion force, pipe 5 can be released and directly pulled out from mounting hole 101. There is no need for "cutting and damaging" like welding, nor for "violent prying that causes pipe 5 to break" like interference fit. Pipe 5 and plate 1 can be completely preserved and can still be used normally during secondary assembly, reducing material waste during maintenance.

[0028] Reference Figure 3 and Figure 4 The outer circumferential sidewall of the rotating ring 4 is provided with an external thread 402, and the inner sidewall of the groove 102 is provided with an internal thread 104. The external thread 402 and the internal thread 104 are adapted to each other.

[0029] When the rotating ring 4 is rotated clockwise, the tooth profiles of the external thread 402 and the internal thread 104 mesh with each other—making a downward linear rotational movement along the inner wall of the groove 102, and the rotating ring 4 can push multiple clamping blocks 3 to move closer to the inside.

[0030] Reference Figure 3 Both the slide groove 103 and the slider 2 are inverted T-shaped structures, and the inner wall of the slide groove 103 is lubricated by coating with lubricating oil.

[0031] The slider 2 fits tightly against the wall of the groove 103, and any force attempting to deviate to the left or right will be directly blocked by the groove wall. This constraint ensures that the slider 2 will only slide in a straight line inside the groove 103, and when the clamping block 3 is pushed by the rotating ring 4, it can only move radially towards the center and will not tilt to one side due to uneven force, ensuring that the arc-shaped clamping surfaces 301 of the multiple clamping blocks 3 always fit synchronously against the outer wall of the pipe 5.

[0032] Furthermore, lubricating oil (such as lithium-based grease) can further reduce the coefficient of sliding friction. This makes the slider 2 move more smoothly when it drives the clamping block 3, without any "jamming" and ensures that multiple clamping blocks 3 move synchronously towards the center, avoiding uneven clamping force caused by a single slider 2 jamming.

[0033] Reference Figure 4 There are 4 clamping blocks 3, which are distributed at equal intervals around the circumference.

[0034] The symmetrical distribution of the four clamping blocks 3 can form a "bidirectional top constraint" (such as the left and right clamping blocks 3 and the front and rear clamping blocks 3 are respectively topped); the four clamping blocks 3 are distributed equidistantly in a circle (adjacent angles are 90°), which can evenly distribute the total clamping force to the four contact points, forming a "ring-shaped wrapping clamp".

[0035] Reference Figure 4 The plate 1 has multiple linearly distributed positioning holes 105, which are located on one side of the mounting hole 101.

[0036] Bolts need to be installed inside the positioning hole 105 to fix the plate 1 to the transverse beam connected in the car compartment. At this time, the pipe 5 is fixedly installed.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automotive air conditioning line plate, characterized by: The device includes a plate (1), a mounting hole (101) and a groove (102) on the plate (1). The groove (102) is located above the mounting hole (101) and is concentrically arranged. The groove (102) communicates with the mounting hole (101). The bottom wall of the groove (102) is provided with multiple circumferentially distributed sliding grooves (103). Each sliding groove (103) is slidably connected to a slider (2). The upper end of the slider (2) extends to the outside of the sliding groove (103) and is fixedly connected to a clamping block (3). The clamping block (3) has an arc-shaped clamping surface (301) on the side near the mounting hole (101). A rotating ring (4) is also threaded into the groove (102). When the rotating ring (4) moves downward, it can push multiple clamping blocks (3) to clamp the pipe (5) passing through the mounting hole (101).

2. The automotive air conditioning line press plate of claim 1, wherein: The inner side of the lower end of the rotating ring (4) is provided with an arc-shaped extrusion surface (401), and the outer side of the clamping block (3) has an arc-shaped contact surface (302). The arc-shaped extrusion surface (401) and the arc-shaped contact surface (302) are in contact.

3. The automotive air conditioning line press plate of claim 1, wherein: The outer circumferential sidewall of the rotating ring (4) is provided with an external thread (402), and the inner sidewall of the groove (102) is provided with an internal thread (104). The external thread (402) and the internal thread (104) are adapted to each other.

4. The automotive air conditioning line press plate of claim 1, wherein: Both the groove (103) and the slider (2) are inverted T-shaped structures, and the inner wall of the groove (103) is lubricated by coating with lubricating oil.

5. The automotive air conditioning line press plate of claim 1, wherein: The number of clamping blocks (3) is 4, and the clamping blocks (3) are distributed at equal intervals around the circumference.

6. The automotive air conditioning line press plate of claim 1, wherein: The plate (1) has a plurality of linearly distributed positioning holes (105), which are located on one side of the mounting hole (101).

Images