Crankcase ventilation pipe assembly

Abstract

The utility model relates to a crankcase ventilation pipe assembly in the technical field of automobile engines, an installation pipe used for being connected with a crankcase is fixedly installed at the bottom end of a ventilation pipe, fixing assemblies used for being connected with the crankcase are arranged in a pipe cavity of the installation pipe, the number of the fixing assemblies is two, and the number of the fixing assemblies is two. The two fixing assemblies are symmetrically distributed in the mounting pipe front and back, driving assemblies used for driving the fixing assemblies to connect the crankcase and the ventilation pipe are arranged on the outer sides of the fixing assemblies, the number of the driving assemblies is two, and the two driving assemblies are symmetrically distributed in the mounting pipe front and back. Therefore, when the ventilation pipe needs to be connected with a connecting pipe on a crankcase, the screw rod can be driven by the hand wheel to be in threaded connection with the mounting pipe, and the rotating table at the end, away from the hand wheel, of the screw rod rotates in the limiting groove of the clamping plate, so that the clamping plate can be driven by the screw rod to move into the mounting groove and is clamped in the mounting groove in the connecting pipe; therefore, the ventilation pipe can be quickly connected with the connecting pipe on the crankcase.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to a crankcase ventilation pipe assembly. Background Art

[0002] The crankcase ventilation pipe assembly is an important component of the engine crankcase ventilation system. Its main function is to introduce the gas separated by the engine oil-gas separator into the engine intake system. The gas separated by the oil-gas separator and the intake air enter the engine intake manifold together, and then enter the combustion chamber to be burned. However, when installing, the existing ventilation pipe assembly is connected to the crankcase by means of screws and helical shafts, which makes it inconvenient to quickly install the ventilation pipe assembly on the crankcase.

[0003] For example, a vehicle engine crankcase ventilation pipe assembly with Chinese patent application number CN201620832041.1 also includes a clamp that is respectively connected to the left and right ends of the ventilation pipe body, and a clamp that is connected to the clamp; the inner surface of the insulation sleeve is connected to the outer surface of the ventilation pipe body, and the clamp includes a clamping portion and a pull ring portion. The lower part of the clamping portion is provided with an inverted trapezoidal groove. The clamp is annular as a whole, and both ends thereof are bent upward to form a bending portion; the bending portion cooperates with the inverted trapezoidal groove. It has the following technical defects:

[0004] When the ventilation pipe assembly is connected to the crankcase, the ventilation pipe assembly is installed on the crankcase by using a screw and a screw shaft connection method. However, the disassembly and installation steps of this connection method are cumbersome and the sealing performance is poor, which makes it inconvenient to quickly install the ventilation pipe assembly on the crankcase. Utility Model Content

[0005] In order to solve the problem raised in the above background technology that when the ventilation pipe assembly is connected to the crankcase, the ventilation pipe assembly is installed on the crankcase by using a screw and a screw shaft connection method, but such a connection method has complicated disassembly and installation steps and poor sealing, so it is not convenient to quickly install the ventilation pipe assembly on the crankcase, the utility model provides the following technical solutions:

[0006] A crankcase ventilation pipe assembly comprises a crankcase arranged on an engine, a ventilation pipe for connecting with the crankcase is arranged above the crankcase, and a fixing device for connecting with the crankcase is fixedly installed at the bottom end of the ventilation pipe.

[0007] A mounting tube for connecting to the crankcase is fixedly installed at the bottom end of the ventilation pipe, and a fixing component for connecting to the crankcase is arranged in the tube cavity of the mounting tube, and there are two fixing components, which are symmetrically distributed in the mounting tube front and back, and a driving component for driving the fixing component to connect the crankcase and the ventilation pipe is arranged on the outside of the fixing component, and there are two driving components, which are symmetrically distributed in the mounting tube front and back, so that when the ventilation pipe needs to be connected to the connecting pipe on the crankcase, the two fixing components can be driven by the two driving components to be stuck in the mounting groove on the connecting pipe, so that the ventilation pipe can be quickly connected to the connecting pipe on the crankcase.

[0008] The fixing assembly includes a clamping plate for clamping in the crankcase, and a limiting groove for rotation of the driving assembly is opened in the plate body of the clamping plate, and the cross-section of the limiting groove is a stepped groove, so that the driving assembly can drive the fixing assembly to clamp and connect with the installation groove on the connecting pipe.

[0009] Furthermore, a connecting pipe for connecting to the ventilation pipe is fixedly installed on the top of the crankcase, and the connecting pipe is inserted into the tube cavity of the installation pipe, so that the two driving components drive the two fixing components to fix the connecting pipe.

[0010] Furthermore, a mounting groove is provided on the tube body of the connecting pipe for cooperating with the fixing assembly to connect the crankcase and the ventilation pipe, and the diameter of the mounting groove is the same as the diameter of the clamping plate, so that the two clamping plates can be clamped in the mounting groove to connect the ventilation pipe to the connecting pipe on the crankcase.

[0011] Furthermore, the cross section of the mounting tube is groove-shaped, and the inner diameter of the mounting tube is larger than the diameter of the ventilation tube, so that the driving component drives the fixing component to perform a snap connection with the mounting groove on the connecting tube.

[0012] Furthermore, the driving assembly includes a screw threadedly connected to the mounting pipe, the end of the screw away from the fixed assembly is fixedly installed with a handwheel for driving the screw to rotate, and the end of the screw away from the handwheel is fixedly installed with a rotating table for rotating in the fixed assembly, and the rotating table can rotate in the fixed assembly.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By providing a connecting pipe, an installation groove and a fixing device, when the ventilation pipe needs to be connected to the connecting pipe on the crankcase, the threaded connection between the screw and the installation pipe can be driven by a hand wheel, and the rotating table at the end of the screw away from the hand wheel rotates in the limiting groove of the clamping plate, and the clamping plate can be driven by the screw to move into the installation groove and be stuck in the installation groove on the connecting pipe, so that the ventilation pipe can be quickly connected to the connecting pipe on the crankcase. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the ventilation pipe of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fixing device of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the fixing component of the utility model.

[0020] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0021] 100-crankcase, 101-connecting pipe, 102-installation groove;

[0022] 200-ventilation pipe;

[0023] 300-fixing device, 310-mounting tube, 320-driving assembly, 321-hand wheel, 322-screw, 323-rotating table, 330-fixing assembly, 331-clamping plate, 332-limiting groove. DETAILED DESCRIPTION

[0024] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0025] See also Figure 1-Figure 5 , the utility model provides a crankcase ventilation pipe assembly.

[0026] The engine comprises a crankcase 100 arranged on the engine, a ventilation pipe 200 for connecting with the crankcase 100 is arranged above the crankcase 100, and a fixing device 300 for connecting with the crankcase 100 is fixedly installed at the bottom end of the ventilation pipe 200.

[0027] A connecting pipe 101 for connecting to the ventilation pipe 200 is fixedly installed on the top of the crankcase 100, and the connecting pipe 101 is inserted into the tube cavity of the mounting tube 310, so that the two driving components 320 can drive the two fixing components 330 to fix the connecting pipe 101, so that the ventilation pipe 200 can be connected to the connecting pipe 101 on the crankcase 100; a mounting groove 102 for cooperating with the fixing component 330 to connect the crankcase 100 and the ventilation pipe 200 is opened on the tube body of the connecting pipe 101, and the diameter of the mounting groove 102 is the same as the diameter of the clamping plate 331, so that the two clamping plates 331 can be clamped in the mounting groove 102, so that the ventilation pipe 200 can be connected to the connecting pipe 101 on the crankcase 100.

[0028] A mounting tube 310 for connecting to the crankcase 100 is fixedly installed at the bottom end of the ventilation pipe 200, and a fixing assembly 330 for connecting to the crankcase 100 is arranged in the tube cavity of the mounting tube 310, and there are two fixing assemblies 330, which are symmetrically distributed in the mounting tube 310 in a front-to-back manner, and a driving assembly 320 for driving the fixing assembly 330 to connect the crankcase 100 with the ventilation pipe 200 is arranged on the outer side of the fixing assembly 330, and there are two driving assemblies 320, which are symmetrically distributed in the mounting tube 310 in a front-to-back manner; therefore, when it is necessary to connect the ventilation pipe 200 with the connecting pipe 101 on the crankcase 100, the two fixing assemblies 330 can be driven by the two driving assemblies 320 to be stuck in the mounting groove 102 on the connecting pipe 101, so that the ventilation pipe 200 can be quickly connected to the connecting pipe 101 on the crankcase 100.

[0029] The cross section of the mounting tube 310 is in the shape of a groove, and the diameter of the groove is larger than the diameter of the ventilation tube 200 , so that the driving assembly 320 drives the fixing assembly 330 to clamp and connect the mounting groove 102 on the connecting tube 101 .

[0030] The driving assembly 320 includes a screw rod 322 threadedly connected to the mounting tube 310, so that when the screw rod 322 rotates, the fixing assembly 330 can be driven to clamp the mounting groove 102 on the connecting tube 101, so that the ventilation tube 200 can be connected to the connecting tube 101 on the crankcase 100; the screw rod 322 is fixedly installed with a hand wheel 321 for driving the screw rod 322 to rotate at the end away from the fixing assembly 330, and the end of the screw rod 322 away from the hand wheel 321 is fixedly installed with a rotating table 321 for rotating in the fixing assembly 330. 3, and the rotating table 323 can rotate in the fixing assembly 330; so that when the ventilation pipe 200 needs to be connected to the connecting pipe 101 on the crankcase 100, the hand wheel 321 can be used to drive the screw rod 322 to be threadedly connected to the mounting pipe 310, and the rotating table 323 at one end of the screw rod 322 away from the hand wheel 321 rotates in the fixing assembly 330, so that the two fixing assemblies 330 can be driven to be stuck in the mounting groove 102 on the connecting pipe 101, so that the ventilation pipe 200 can be quickly connected to the connecting pipe 101 on the crankcase 100.

[0031] The fixing assembly 330 includes a clamping plate 331 for being clamped in the mounting groove 102, and a limiting groove 332 for the rotation of the rotating table 323 is opened in the plate body of the clamping plate 331, and the cross-section of the limiting groove 332 is a stepped groove; therefore, when it is necessary to connect the ventilation pipe 200 with the connecting pipe 101 on the crankcase 100, the hand wheel 321 can be used to drive the threaded connection between the screw rod 322 and the mounting pipe 310, and the rotating table 323 at one end of the screw rod 322 away from the hand wheel 321 rotates in the limiting groove 332 of the clamping plate 331, which can drive the clamping plate 331 to be clamped in the mounting groove 102 on the connecting pipe 101, so that the ventilation pipe 200 can be quickly connected to the connecting pipe 101 on the crankcase 100.

[0032] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A crankcase ventilation pipe assembly, characterized in that: It comprises a crankcase (100) arranged on an engine, a ventilation pipe (200) for connecting to the crankcase (100) is arranged above the crankcase (100), and a fixing device (300) for connecting to the crankcase (100) is fixedly installed at the bottom end of the ventilation pipe (200); A mounting tube (310) for connecting to the crankcase (100) is fixedly installed at the bottom end of the ventilation tube (200); a fixing assembly (330) for connecting to the crankcase (100) is arranged in the tube cavity of the mounting tube (310); there are two fixing assemblies (330), which are symmetrically distributed in the mounting tube (310) in a front-to-back manner; a driving assembly (320) for driving the fixing assembly (330) to connect the crankcase (100) and the ventilation tube (200) is arranged on the outside of the fixing assembly (330); there are two driving assemblies (320), which are symmetrically distributed in the mounting tube (310) in a front-to-back manner; The fixing assembly (330) comprises a clamping plate (331) for clamping in the crankcase (100), a limiting groove (332) for allowing the driving assembly (320) to rotate is provided in the plate body of the clamping plate (331), and the cross section of the limiting groove (332) is a stepped groove.

2. A crankcase ventilation pipe assembly according to claim 1, characterized in that: A connecting pipe (101) for connecting to the ventilation pipe (200) is fixedly mounted on the top end of the crankcase (100), and the connecting pipe (101) is inserted into the tube cavity of the mounting pipe (310).

3. A crankcase ventilation pipe assembly according to claim 2, characterized in that: The connecting pipe (101) is provided with a mounting groove (102) on its body for cooperating with the fixing assembly (330) to connect the crankcase (100) and the ventilation pipe (200).

4. A crankcase ventilation pipe assembly according to claim 3, characterized in that: The cross section of the mounting tube (310) is in the shape of a groove, and the inner diameter of the mounting tube (310) is larger than the diameter of the ventilation tube (200), so that the driving component (320) drives the fixing component (330) to perform a clamping connection with the mounting groove (102) on the connecting tube (101).

5. A crankcase ventilation pipe assembly according to claim 4, characterized in that: The driving assembly (320) comprises a screw rod (322) threadedly connected to the mounting tube (310); a hand wheel (321) for driving the screw rod (322) to rotate is fixedly mounted on one end of the screw rod (322) away from the fixing assembly (330); and a rotating table (323) for rotating in the fixing assembly (330) is fixedly mounted on one end of the screw rod (322) away from the hand wheel (321).

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