Device for press fitting of timing signal panel and fixed top dead center of engine

Abstract

The utility model provides a device for press-fitting an engine timing signal panel and a fixed top dead center, and relates to the technical field of engines, the device comprises an engine assembly, and further comprises a bottom plate and a cylindrical pin A mounted on the bottom plate, a woodruff key is mounted in a woodruff key groove A in the engine assembly, and the woodruff key is mounted in the woodruff key groove A; after the woodruff key is aligned with a semicircular key groove B in the bottom plate and a cylindrical pin hole A in the engine assembly is aligned with a cylindrical pin A, the engine assembly is installed on the bottom plate, a timing signal panel is loosely installed on the top of the engine assembly, a cylindrical pin B installed on the engine assembly is inserted into the timing signal panel in a penetrating mode, and stand columns are arranged on the two sides of the bottom plate. A top plate is arranged on the top of the stand column, and a pressing rod which penetrates through the top plate and is pressed to the timing signal panel is arranged on the top plate. The tool composed of the bottom plate, the stand column, the top plate, the pressing rod and the standard parts (the woodruff key, the cylindrical pin A and the cylindrical pin B) is used for guaranteeing that the timing signal panel is pressed in place, whether the timing signal panel is pressed in place or not can be observed from the notch, and the installation effect is better.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to a device for press-fitting an engine timing signal plate and determining the top dead center. Background Art

[0002] With the continuous advancement of automotive technology, traditional automotive ignition systems have been replaced by electronically controlled systems. These systems accurately measure the cylinder's compression top dead center (CTDC) using signals sensed by the camshaft phase signal disc installed on the vehicle. This allows for sequential fuel injection control, ignition timing, and detonation control, ensuring ignition timing. The signal disc is the sensor's signal rotor, responsible for ensuring the cyclical variation of the camshaft phase sensor's sensed magnetic flux, enabling the transmission of camshaft position signals and improving engine operation stability.

[0003] It can be seen that the quality of the signal disc will affect the smoothness of engine operation. The signal disc in the related art is usually prone to the problem of not being pressed into place, and therefore needs to be improved. Summary of the Invention

[0004] In order to overcome the existing deficiencies, an embodiment of the present application provides a device for pressing an engine timing signal disc and determining the top dead center, and uses a tooling consisting of a base plate, a column, a top plate, a pressure rod, and standard parts (semicircular keys and cylindrical pins A and B) to ensure that the timing signal disc is pressed into place. Whether it is pressed into place can be observed from the notch, and the installation effect is better.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problems is: a device for press-fitting an engine timing signal disk and fixing the top dead center, including an engine assembly, a base plate and a cylindrical pin A mounted thereon, a semicircular key being mounted in the semicircular keyway A in the engine assembly, the semicircular key being aligned with the semicircular keyway B in the base plate and the cylindrical pin hole A in the engine assembly being aligned with the cylindrical pin A, and the engine assembly being mounted on the base plate, a timing signal disk being loosely mounted on the top of the engine assembly, the timing signal disk being inserted with a cylindrical pin B mounted on the engine assembly, columns being provided on both sides of the base plate, a top plate being mounted on the top of the column, a pressure rod being provided on the top plate passing through it and press-fitted to the timing signal disk.

[0006] Furthermore, the cylindrical pin A is specifically a 2x10 cylindrical pin, and a cylindrical pin hole B for inserting the cylindrical pin A is opened on one side of the upper surface of the base plate.

[0007] Furthermore, the column is an integrated columnar structure with its axis in a straight line, a large diameter in the middle and small diameters at both ends. Fixed holes are opened on both sides of the bottom plate and the corresponding sides of the top plate for the columnar bodies at both ends of the column to be pressed into.

[0008] Further, the semicircular key is installed in the semicircular key groove A of the front end of the crankshaft in the engine assembly, and a cavity is formed in the middle of the upper surface of the bottom plate for inserting the front end of the crankshaft in the engine assembly, and the semicircular key groove B in the bottom plate is arranged on the inner wall of the cavity and communicates with the cavity.

[0009] Further, the timing signal disc is loosely installed on the rear end hole of the crankshaft in the engine assembly, and the shaft of the timing signal disc is in interference fit with the rear end hole of the crankshaft in the engine assembly.

[0010] Further, the cylindrical pin B is specifically a 4x10 cylindrical pin.

[0011] Further, the timing signal disc has upper and lower inner holes, the upper inner hole is for the press fitting of the pressing rod, and the lower inner hole is for the insertion of the cylindrical pin B, and the diameter of the inner hole of the lower segment of the timing signal disc and the diameter of the hole position of the top end of the engine assembly and the cylindrical pin B are both

[0012] Further, the upper part of the outer surface of the engine assembly is provided with a gap for observing whether the timing signal disc is press fitted in place.

[0013] The advantages of the embodiment of the application are:

[0014] First, the cylindrical pin A is installed on the cylindrical pin hole B of the bottom plate; then the column is installed on the bottom plate, the semicircular key is installed in the semicircular key groove of the engine assembly, and then the engine assembly is installed on the bottom plate, the engine assembly and the semicircular key are aligned with the semicircular key groove of the bottom plate and the cylindrical pin hole of the engine assembly, the cylindrical pin A installed on the bottom plate, the timing signal disc is loosely installed on the engine assembly, the cylindrical pin B passes through the hole of the timing signal disc and is installed on the hole of the engine assembly; the top plate is installed on the column, and the pressing rod is press fitted into the timing signal disc by using a rubber hammer or a hydraulic machine, and whether the timing signal disc is press fitted in place is observed from the gap of the engine assembly. Therefore, the tooling composed of the bottom plate, the column, the top plate, the pressing rod and the standard parts (the semicircular key and the cylindrical pin A and the cylindrical pin B) is used to ensure that the timing signal disc is press fitted in place, and whether the timing signal disc is press fitted in place can be observed from the gap, and the installation effect of the timing signal disc is better. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The device for press fitting the engine timing signal disc and setting the top dead center provided in the embodiment of the application is a three-dimensional exploded structural schematic diagram;

[0016] Figure 2 The device for press fitting the engine timing signal disc and setting the top dead center provided in the embodiment of the application is a cross-sectional exploded structural schematic diagram;

[0017] Figure 3A schematic diagram of the three-dimensional structure of a device for press-fitting an engine timing signal plate and determining the top dead center provided in an embodiment of the present application;

[0018] Figure 4 A schematic cross-sectional view of a device for press-fitting an engine timing signal plate and determining the top dead center, provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of the three-dimensional structure of the base plate provided in an embodiment of the present application;

[0020] Figure 6 A schematic diagram of the three-dimensional structure of the top plate provided in an embodiment of the present application;

[0021] Figure 7 A schematic diagram of the three-dimensional structure of the column provided in the embodiment of the present application;

[0022] Figure 8 This is a schematic diagram of the three-dimensional structure of the pressure rod provided in the embodiment of the present application.

[0023] In the figure: 1-base plate; 2-cylindrical pin A; 3-semi-wood key; 4-column; 5-engine assembly; 6-cylindrical pin B; 7-timing signal plate; 8-top plate; 9-pressure rod. DETAILED DESCRIPTION

[0024] The technical solution in the embodiment of the present application is to solve the problem that the timing signal disc in the related art is easily pressed into place, and the overall idea is as follows:

[0025] Example 1:

[0026] like Figures 1-4 、 Figure 8 As shown, a device for press-fitting an engine timing signal disk and fixing the top dead center includes an engine assembly 5, a base plate 1 and a cylindrical pin A2 mounted thereon, a semicircular key 3 is mounted in the semicircular keyway A in the engine assembly 5, the semicircular key 3 is aligned with the semicircular keyway B in the base plate 1 and the cylindrical pin hole A in the engine assembly 5 is aligned with the cylindrical pin A2, and the engine assembly 5 is mounted on the base plate 1, a timing signal disk 7 is loosely mounted on the top of the engine assembly 5, the timing signal disk 7 is inserted with a cylindrical pin B6 mounted on the engine assembly 5, columns 4 are provided on both sides of the base plate 1, a top plate 8 is mounted on the top of the column 4, and a pressure rod 9 is provided on the top plate 8 that passes through it and is press-fitted to the timing signal disk 7.

[0027] In this embodiment, the cylindrical pin A2 is first installed on the cylindrical pin hole B of the base plate 1; then the column 4 is installed on the base plate 1, the semicircular key 3 is installed in the semicircular keyway of the engine assembly 5, and then the engine assembly 5 is installed as a whole on the base plate 1, the engine assembly 5 and the semicircular key 3 are aligned with the semicircular keyway of the base plate 1 and the cylindrical pin hole of the engine assembly 5 is aligned with the cylindrical pin A2 installed on the base plate 1, the timing signal disk 7 is loosely installed on the engine assembly 5, and the cylindrical pin B6 is installed on the hole of the timing signal disk 7 through the hole of the engine assembly 2; the top plate 8 is installed on the column 4, and the pressure rod 9 is passed through the top plate 8 to press the timing signal disk 7 with a rubber hammer or a hydraulic press. Observe from the notch of the engine assembly 5 whether the timing signal disk 7 is pressed into place. From this, it can be seen that the present application uses a tooling consisting of a base plate 1, a column 4, a top plate 8, a pressure rod 9 and standard parts (a semicircular key 3 and a cylindrical pin A2, a cylindrical pin B6) to ensure that the timing signal disc 7 is pressed into place. Whether it is pressed into place can be observed from the notch, and the installation effect of the timing signal disc 7 is better.

[0028] like Figure 1-Figure 5 As shown, the cylindrical pin A2 is specifically a 2x10 cylindrical pin, and a cylindrical pin hole B for inserting the cylindrical pin A2 is opened on one side of the upper surface of the base plate 1.

[0029] like Figure 1-Figure 7 As shown, the column 4 is an integrated columnar structure with its axis in a straight line, a large diameter in the middle and small diameters at both ends. Fixed holes are opened on both sides of the bottom plate 1 and the corresponding sides of the top plate 8 for the columnar bodies at both ends of the column 4 to be pressed into.

[0030] The semicircular key 3 is installed in the semicircular keyway A at the front end of the crankshaft in the engine assembly 5, and a cavity for inserting the front end of the crankshaft in the engine assembly 5 is opened in the middle of the upper surface of the base plate 1, and the semicircular keyway B in the base plate 1 is arranged on the inner wall of the cavity and connected thereto.

[0031] The timing signal disc 7 is loosely mounted on the rear end hole of the crankshaft in the engine assembly 5 , and the shaft of the timing signal disc 7 and the rear end hole of the crankshaft in the engine assembly 5 are interference fit.

[0032] The cylindrical pin B6 is specifically a 4x10 cylindrical pin.

[0033] It should be noted that the semicircular key 3, the 2x10 cylindrical pin, and the 4x40 cylindrical pin can be used together with the base plate 1 to determine the top dead center.

[0034] like Figures 1-4 、 Figure 8 As shown, the upper and lower inner holes of the timing signal plate 7 are for the pressure rod 9 to be pressed, and the lower inner hole is for the cylindrical pin B6 to be inserted. The inner hole diameter of the lower section of the timing signal plate 7 and the diameter of the hole at the top of the engine component 5 that is adapted to the cylindrical pin B6 are both

[0035] The upper portion of the outer surface of the engine assembly 5 is provided with a notch for observing whether the timing signal plate 7 is pressed into place, and the notch is designed in a circular shape.

[0036] When assembling this application:

[0037] Step 1: Install the 2x10 cylindrical pin into the cylindrical pin hole B on the bottom plate 1;

[0038] Step 2: Install the two columns 4 on the base plate 1;

[0039] Step 3: Install the woodruff key 3 into the woodruff keyway at the front end of the crankshaft of the engine assembly 5, and then install the engine assembly 5 as a whole onto the base plate 1, aligning the engine assembly 5 and the woodruff key 3 with the woodruff keyway of the base plate 1 and the cylindrical pin hole of the engine assembly 5 with the 2x10 cylindrical pin installed on the base plate 1;

[0040] Step 4: Loosely install the timing signal plate 7 onto the rear end hole of the crankshaft on the engine assembly 5. The shaft of the timing signal plate 7 and the rear end hole of the crankshaft are interference fit. The 4x40 cylindrical pin passes through the timing signal plate 7. The hole is mounted to the engine assembly 2 On the hole;

[0041] Step 5: Install the top plate 8 onto the column 4, use a rubber hammer or hydraulic press to push the pressure rod 9 through the top plate 8 to press the timing signal plate 7, and observe whether the timing signal plate 7 is pressed into place through the notch of the engine assembly 5.

[0042] In summary, this application uses a tooling consisting of a base plate 1, a column 4, a top plate 8, a pressure rod 9 and standard parts (a semicircular key 3 and 2x10, 4x40 cylindrical pins) to ensure that the timing signal disc 7 is pressed into place. Whether it is pressed into place can be observed from the notch, and the installation effect of the timing signal disc 7 is better.

[0043] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present application and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. Obvious variations or modifications arising therefrom remain within the scope of protection of this application.

Claims

1. A device for press-fitting an engine timing signal plate and setting the top dead center, comprising an engine assembly (5), characterized in that: The invention also includes a base plate (1) and a cylindrical pin A (2) mounted thereon, a semicircular key (3) being mounted in the semicircular keyway A in the engine assembly (5), the semicircular key (3) being aligned with the semicircular keyway B in the base plate (1) and the cylindrical pin hole A in the engine assembly (5) being aligned with the cylindrical pin A (2), and then the engine assembly (5) being mounted on the base plate (1), a timing signal disk (7) being loosely mounted on the top of the engine assembly (5), and a cylindrical pin B (6) mounted on the engine assembly (5) being inserted through the timing signal disk (7), columns (4) being provided on both sides of the base plate (1), a top plate (8) being provided on the top of the column (4), and a pressure rod (9) being provided on the top plate (8) passing through the top plate and being pressed onto the timing signal disk (7).

2. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The cylindrical pin A (2) is specifically a 2x10 cylindrical pin, and a cylindrical pin hole B for inserting the cylindrical pin A (2) is provided on one side of the upper surface of the base plate (1).

3. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The column (4) is an integrated columnar structure with its axis in a straight line, a large diameter in the middle and small diameters at both ends. Both sides of the bottom plate (1) and the corresponding two sides of the top plate (8) are provided with fixing holes for press-fitting the columnar bodies at both ends of the column (4).

4. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The semicircular key (3) is installed in the semicircular keyway A at the front end of the crankshaft in the engine assembly (5), and a cavity for inserting the front end of the crankshaft in the engine assembly (5) is opened in the middle of the upper surface of the base plate (1), and the semicircular keyway B in the base plate (1) is arranged on the inner wall of the cavity and is connected thereto.

5. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The timing signal disc (7) is loosely mounted on the rear end hole of the crankshaft in the engine assembly (5), and the shaft of the timing signal disc (7) and the rear end hole of the crankshaft in the engine assembly (5) are interference fit.

6. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The cylindrical pin B (6) is specifically a 4x10 cylindrical pin.

7. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 6, characterized in that: The timing signal disc (7) has two inner holes, the upper inner hole of which is for the press rod (9) to be pressed, and the lower inner hole of which is for the cylindrical pin B (6) to be inserted. The inner hole diameter of the lower inner hole of the timing signal disc (7) and the hole diameter of the top of the engine component (5) adapted to the cylindrical pin B (6) are both 8. The device for press-fitting an engine timing signal plate and determining the top dead center according to claim 1, characterized in that: The upper portion of the outer surface of the engine assembly (5) is provided with a notch for observing whether the timing signal disc (7) is pressed into place.

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