Connecting structure of PCV box and rubber tube

Abstract

The utility model relates to a connecting structure of a PCV box and a rubber tube, which comprises a first interface and a second interface which are respectively formed on the PCV box and the rubber tube, the first interface is sleeved with the second interface, and the connecting structure is characterized in that a first clamping structure is formed on the outer surface of the PCV box at a position opposite to the rubber tube; a first clamping structure is formed on the outer periphery of the PVC box, a second clamping structure corresponding to the first clamping structure is formed on the outer periphery of the rubber pipe, the PVC box and the rubber pipe are connected in a clamping mode through the first clamping structure and the second clamping structure, an annular sealing rib is arranged on the outer periphery of the first connector, and the first connector is sleeved with the second connector. And the inner circumferential surface of the sealing ring is in interference fit with the sealing rib. The first connector on the PCV box is connected with the second connector on the rubber pipe in a sleeved mode, the sleeved position is sealed and free of leakage through the sealing rib, meanwhile, the PCV box and the rubber pipe are connected in a clamped mode through the first clamping structure and the second clamping structure, and it is guaranteed that the PCV box and the rubber pipe cannot be disengaged after being assembled.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle parts technology, and in particular relates to a connection structure between a PCV box and a rubber tube. Background Technology

[0002] A PCV (Powered Crankcase Ventilation) system is an important emission control system that reduces pollutant emissions by controlling the gas emissions from the crankcase. One of the key components of a PCV system is the PCV box (valve), which is typically connected to a rubber hose to enable ventilation between the crankcase and the intake manifold.

[0003] In existing technologies, clamps are typically used to tighten the connection between the PVC box and the rubber tube to prevent leakage. This method is inconvenient to assemble, has low production line efficiency, and is costly. Utility Model Content

[0004] Based on this, and to address the aforementioned technical problems, a connection structure between the PCV box and the rubber tube is provided.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A PVC box and rubber tube connection structure includes a first interface and a second interface formed on the PVC box and the rubber tube respectively, wherein the first interface and the second interface are sleeved together. The structure is characterized in that a first snap-fit ​​structure is formed on the outer surface of the PVC box opposite to the rubber tube, and a second snap-fit ​​structure corresponding to the first snap-fit ​​structure is formed on the outer circumferential surface of the rubber tube. The PVC box and the rubber tube are snapped together by the first snap-fit ​​structure and the second snap-fit ​​structure. The outer circumferential surface of the first interface has an annular sealing rib, and the second interface is sleeved outside the first interface, with its inner circumferential surface interference-fitted with the sealing rib.

[0007] This utility model provides a connection structure between a PCV box and a rubber tube. The PCV box is connected to the second interface on the rubber tube via a first interface. The connection is sealed with a sealing rib to prevent leakage. At the same time, the PCV box and the rubber tube are connected by a first snap-fit ​​structure and a second snap-fit ​​structure to ensure that the PCV box and the rubber tube will not come off after assembly. Attached Figure Description

[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0009] Figure 1 A cross-sectional view of a connection structure between a PCV box and a rubber tube provided in an embodiment of this utility model;

[0010] Figure 2 A three-dimensional structural diagram of a connection structure between a PCV box and a rubber tube provided in an embodiment of this utility model. Figure 1 ;

[0011] Figure 3 A three-dimensional structural diagram of a connection structure between a PCV box and a rubber tube provided in an embodiment of this utility model. Figure 2 . Detailed Implementation

[0012] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.

[0013] like Figure 1 As shown, this application embodiment provides a connection structure between a PCV box and a rubber tube, including a first interface 110, a second interface 120, a first snap-fit ​​structure 130, and a second snap-fit ​​structure 140.

[0014] The first interface 110 is formed on the lower surface of the PCB box 2, and its outer circumference has two vertically distributed annular sealing ribs 111. The second interface 120 is formed on the rubber tube 3 and is fitted over the first interface 110, and its inner circumference is press-fitted with the sealing ribs 111.

[0015] It is understandable that the number of sealing ribs 111 is not limited to two.

[0016] like Figure 1 As shown, the first snap-fit ​​structure 130 consists of two snaps 131. The two snaps 131 are formed on the lower surface of the PCB box 2 and extend downward to the outer side of the outer peripheral surface of the rubber tube 3. One snap 131 is located on the left side of the second interface 120, and the other snap 131 is located on the lower right side of the second interface 120.

[0017] like Figure 1 As shown, in order to make the connection between the second interface 120 and the first interface 110 more secure, a latch 150 is formed between the buckle 131 on the left side and the first interface 110 to engage the second interface 120. The part of the second interface 120 that is engaged in the latch 150 has a thickened part 121, which fits tightly with the latch 150. At the same time, the lower end of the first interface 110 forms a ring-shaped hook part 112 that protrudes radially outward. After the second interface 120 and the first interface 110 are engaged, the part of the rubber tube 3 corresponding to the ring-shaped hook part 112 deforms accordingly and is hooked by the ring-shaped hook part 112.

[0018] like Figure 1 As shown, the second snap-fit ​​structure 140 consists of two snap holes 141 that correspond to the two snap buckles 131 respectively. The snap holes 141 snap into the corresponding snap buckles 131 to achieve the snap-fit ​​connection between the PCV box 2 and the rubber tube 3.

[0019] The rubber tube 3 has a seat 31 on each of its left and right sides, and a locking hole 141 is formed on each of the two seats 31. See [reference needed] Figure 1-3 .

[0020] In this embodiment, as Figure 1 As shown, the buckle 131 includes a column 131a, the outer diameter of which is adapted to the inner diameter of the corresponding buckle hole 141. The lower end of the column 131a forms a mushroom-shaped head 131b. After passing through the buckle hole 141, the mushroom-shaped head 131b abuts against the outlet end face (lower end face) of the buckle hole 141. In addition, the diameter of the mushroom-shaped head 131b gradually widens from bottom to top, which facilitates passing through the buckle hole 141.

[0021] As can be seen from the above, the PCV box and rubber tube connection structure provided in this application embodiment is connected by a first interface on the PCV box and a second interface on the rubber tube. The connection is sealed with a sealing rib to ensure no leakage. At the same time, the PCV box and the rubber tube are snapped together by a first snap-fit ​​structure and a second snap-fit ​​structure to ensure that the PCV box and the rubber tube will not come off after assembly.

[0022] In addition, the second interface is also held in the bayonet, and the lower end of the first interface has a ring-shaped hook that hooks onto the rubber tube, making the connection between the second interface and the first interface more secure.

[0023] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A connection structure between a PVC box and a rubber tube, comprising a first interface and a second interface respectively formed on the PVC box and the rubber tube, wherein the first interface and the second interface are sleeved together, characterized in that, The outer surface of the PVC box forms a first snap-fit ​​structure opposite to the rubber tube, and the outer circumferential surface of the rubber tube forms a second snap-fit ​​structure corresponding to the first snap-fit ​​structure. The PVC box and the rubber tube are snapped together by the first snap-fit ​​structure and the second snap-fit ​​structure. The outer circumferential surface of the first interface has an annular sealing rib, and the second interface is fitted over the first interface, with its inner circumferential surface interference-fitted with the sealing rib.

2. The connection structure between the PCV box and the rubber tube according to claim 1, characterized in that, The number of sealing ribs is multiple.

3. The connection structure between the PCV box and the rubber tube according to claim 1, characterized in that, The first snap-fit ​​structure is a buckle extending to the outer side of the outer circumferential surface of the rubber tube, and the second snap-fit ​​structure is a snap hole that snaps into the buckle.

4. The connection structure between the PCV box and the rubber tube according to claim 3, characterized in that, The number of buckles and buckles is two in total. Of the two buckles, one buckle is located on the radially outer side of the second interface, and the other buckle is located on the opposite side.

5. The connection structure between the PCV box and the rubber tube according to claim 4, characterized in that, One of the two latches forms a latch with the first interface to engage with the second interface, and the end of the first interface forms a ring-shaped hook that protrudes radially outward.

6. A connection structure between a PCV box and a rubber tube according to any one of claims 3-5, characterized in that, The buckle includes a column, the outer diameter of which is adapted to the inner diameter of the corresponding buckle hole, and the end of the column is formed into a mushroom-shaped head that abuts against the outlet end face of the buckle hole after passing through the buckle hole.

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