Rapid installation device for oil rail oil sprayer

Abstract

The utility model relates to the technical field of engine tools, in particular to an oil rail oil sprayer rapid installation device which comprises a supporting boss and an installation tool, and the installation tool is placed on the supporting boss. The installation tool comprises an oil sprayer fixing device, an oil rail fixing device and a press-fitting plate, wherein the oil sprayer fixing device and the oil rail fixing device are both fixed to the press-fitting plate. The utility model solves the problems that the oil rail injector is long in installation time, inaccurate in positioning and easy to damage in the installation process.

Description

Technical Field

[0001] The utility model relates to the technical field of engine tooling, and more specifically to a quick installation device for an oil rail injector. Background Art

[0002] The fuel supply system of the direct injection engine is mainly composed of high-pressure fuel pump, high-pressure fuel pipe, high-pressure fuel rail, high-pressure fuel injector and other parts installed on the cylinder head. One end of the four fuel injectors is installed on the fuel injector hole of the cylinder head, and the other end is installed on the fuel injector hole of the high-pressure fuel rail. The three are fastened by bolts on the high-pressure fuel rail. In order to facilitate assembly and shorten operation time, the fuel injectors of the manifold injection engine were pre-installed on the fuel rail and delivered together as the fuel rail injector assembly. The operator only needs to install the assembled fuel rail injector on the intake manifold injector hole, without straightening, just tightening directly.

[0003] Due to the engine upgrade using high-pressure cylinder head direct injection technology, the injector is installed under the intake manifold with limited space. And because the fuel pressure has increased to 350bar, the injector structure has changed. Compared with previous injectors, fixing pins have been added to strengthen the structure. Therefore, there are higher positioning requirements for the installation of the injector: There are axial angle requirements between the injector and the cylinder head mounting hole: The injector locating pin must match the locating pin hole on the cylinder head and be close to the surrounding area. If the position deviation causes installation interference, it is easy to damage the injector.

[0004] However, there is no axial angle constraint between the injector and the oil rail mounting hole. If the conventional manifold injection installation method is adopted, the injector may rotate around the oil rail mounting hole during the transportation or installation of the oil rail injector assembly. When it is installed on the cylinder head, it will interfere with the cylinder head positioning point. If the operator does not notice the misalignment of the injector and forcibly tightens the oil rail fastening bolts, the injector will be squeezed and damaged by the oil rail and cylinder head.

[0005] If the solution is adopted of first installing the four injectors on the injector holes of the cylinder head, then installing the oil rail, and finally tightening the fixing bolts, the problem of injector installation positioning is solved. The first disadvantage is that the operation time is long. It takes 178 seconds to install a set of oil rail injectors, which cannot meet the rhythm requirements of the production line. The second is that it is necessary to hold the oil rail and adjust the four injectors at the same time. Single-person operation can easily cause parts to fall off, making it difficult for single-person operation. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a fuel rail injector quick installation device, which assists in fixing the oil rail and the injector by arranging a pressing plate, a fuel injector fixing device and an oil rail fixing device, so that the oil rail and the injector are connected as one, are not easy to fall off, and are convenient for workers to move and install the oil rail, thereby improving the workers' installation efficiency.

[0007] In order to solve the above technical problems, the utility model provides a fuel rail injector quick installation device, including a supporting boss and an installation tool, the installation tool includes a pressing plate, an injector fixing device for inserting the injector, and an oil rail fixing device that can hook the oil rail, the pressing plate is installed on the supporting boss, and the injector fixing device and the oil rail fixing device are both fixed on the pressing plate.

[0008] In the present technical solution, since the oil rail is provided with a branch pipe in addition to the main pipeline, the branch pipe is not on the same plane as the mounting surface of the injector on the oil rail, so when assembling the oil rail, the oil rail needs to be erected in the air to leave space for the branch pipe. The installation tool is installed on the supporting boss, and the oil rail is placed on the installation tool. The installation tool is suspended in the air, leaving space for the branch pipe on the oil rail. The installation tool includes an injector fixture, an oil rail fixture and a press plate, the press plate is placed on the supporting boss, and the injector fixture and the oil rail fixture are both fixed to the press plate. When using the device, the oil rail is placed in the oil rail fixture, and the length direction of the oil rail is parallel to the length direction of the press plate. The injector can be directly inserted into the injector interface of the oil rail to complete the installation, but the injector and the oil rail are only in point contact, so that the injector can rotate around the injector interface of the oil rail, causing an installation angle deviation, which affects the subsequent installation of the injector and the oil rail on the engine cylinder block. Therefore, an injector fixing device is also provided on the press plate. After the fuel rail is placed, the injector only needs to be aligned with the injector interface of the fuel rail and the fuel rail fixing device provided on the press plate. The injector fixing device and the injector interface of the fuel rail form a two-point fixation for the injector, so that the injector cannot rotate, thereby achieving the effect of fixing the injector.

[0009] Preferably, the oil rail fixing device comprises a pressing piece, a fixing hook and a fastener, wherein the fixing hook is located below the press plate, the pressing piece is located below the fixing hook, and the fastener connects the pressing piece and the press plate to fasten the fixing hook.

[0010] Preferably, a pressing groove is provided in the middle of the pressing member, the depth of the pressing groove is less than the thickness of the fixing hook, and the fixing hook is located in the pressing groove.

[0011] Preferably, the pressing member is parallel to the pressing plate, and the fixing hook is perpendicular to the pressing member.

[0012] Preferably, the fixing hook includes a circular hook, a connecting piece and an L-shaped limiting hook, one end of the circular hook is connected to the connecting piece, the other end of the connecting piece is connected to the L-shaped limiting hook, and the L-shaped limiting hook is hung on one side of the pressing plate away from the oil rail.

[0013] Preferably, the injector fixing device is a shell structure with an open top.

[0014] Preferably, the pressing plate is detachably connected to the supporting boss.

[0015] Preferably, the press plate is provided with a plurality of first positioning holes along the length direction, a positioning pin is fixed to the upper surface of the support boss, the positioning pin is inserted into the positioning hole and protrudes from the upper surface of the press plate, and the position of the positioning pin matches the position of the mounting hole of the oil rail.

[0016] Preferably, it further includes a second positioning pin, a second positioning hole is provided on the upper surface of the supporting boss, a third positioning hole is provided on the press-fit plate at a position corresponding to the second positioning hole, and the second positioning pin can be inserted into the second positioning hole and the third positioning hole.

[0017] Preferably, a placement groove is provided on the upper surface of the supporting boss, and the placement groove is arranged along the length direction of the pressing plate.

[0018] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, the fuel rail injector quick installation device includes a support boss and an installation tool, the support boss suspends the installation tool to leave a placement space for the bypassed branch pipe, the fuel rail fixing device includes a clamping member and a fixing hook, the clamping member is provided with a clamping groove, the fixing hook can move along the clamping groove, so that the fuel rail fixing device has an adjustment function. The fuel injector fixing device is a shell structure open at the top, so that the fuel injector can move upward freely, and the fuel injector fixing device only limits the fuel injector to be non-rotatable, and does not affect the subsequent assembly of the fuel injector on the engine cylinder block and the disassembly of the installation tool. The upper surface of the support boss is provided with a positioning pin, and the positioning pin can be inserted into the mounting hole of the press plate and the fuel rail, and can simultaneously realize the fixing of the position of the press plate and the fuel rail. The support boss is also provided with a placement groove for placing the fuel rail to increase the support effect on the fuel rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model fuel rail injector quick installation device;

[0020] Figure 2 This is an exploded view of the utility model fuel rail injector quick installation device;

[0021] Figure 3 This is a three-dimensional diagram of the utility model fuel rail fuel injector quick installation device after removing the fuel rail and fuel injector;

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0023] Figure 5 It is a three-dimensional diagram of the pressing member of the quick installation device of the fuel rail injector of the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the fixing hook of the quick installation device of the fuel rail injector of the utility model;

[0025] Figure 7 The utility model is a schematic diagram of the connection between the oil rail fixing device and the pressing plate of the oil rail injector quick installation device.

[0026] In the accompanying drawings: 1. Support boss; 2. Installation tool; 3. Second positioning pin; 4. Oil rail; 5. Injector; 11. Positioning pin; 12. Second positioning hole; 13. Placement groove; 21. Injector fixing device; 22. Oil rail fixing device; 23. Pressing plate; 24. Positioning hole; 25. Third positioning hole; 221. Pressing piece; 222. Fixing hook; 223. Pressing groove; 224. Round hook; 225. Connecting piece; 226. L-shaped limit hook. DETAILED DESCRIPTION

[0027] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0030] Example 1

[0031] like Figure 1As shown, a quick installation device for fuel rail injectors includes a supporting boss 1 and an installation tool 2, wherein the installation tool 2 includes a pressing plate 23, an injector fixing device 21 for inserting the injector, and an oil rail fixing device 22 for hooking the oil rail, the pressing plate 23 is installed on the supporting boss 1, and the injector fixing device 21 and the oil rail fixing device 22 are both fixed on the pressing plate 23. Since the oil rail is provided with a branch pipe in addition to the main pipeline, the branch pipe is not on the same plane as the mounting surface of the injector on the oil rail, so when assembling the oil rail, the oil rail needs to be erected in the air to leave space for placing the branch pipe. The installation tool 2 is installed on the supporting boss 1, and the oil rail 4 is placed on the installation tool 2. The installation tool 2 is suspended in the air, leaving space for placing the branch pipe on the oil rail. The installation tool 2 includes an injector fixing device 21, an oil rail fixing device 22 and a press plate 23. The press plate 23 is placed on the support boss 1. The injector fixing device 21 and the oil rail fixing device 22 are both fixed to the press plate 23. When using the device, the oil rail is placed in the oil rail fixing device 22, and the length direction of the oil rail is parallel to the length direction of the press plate 23. The injector can be directly inserted into the injector interface of the oil rail to complete the installation. However, the injector and the oil rail are only in contact at one point of the injector interface, so that the injector can rotate with the injector interface of the oil rail as the axis, resulting in an installation angle deviation, which affects the subsequent installation of the injector and the oil rail on the engine cylinder block. Therefore, an injector fixing device 21 is also provided on the pressing plate. When the oil rail is placed, the injector only needs to be aligned with the injector interface of the oil rail and the injector fixing device 21 provided on the pressing plate 23 and then inserted. The injector fixing device 21 and the injector interface of the oil rail form a two-point fixation for the injector, so that the injector cannot rotate, thereby achieving the effect of fixing the injector.

[0032] like Figure 7 As shown, the oil rail fixing device 22 includes a clamping member 221, a fixing hook 222 and a fastener. The fixing hook 222 is located below the press plate 23, the clamping member 221 is located below the fixing hook 222, and the fastener connects the clamping member 221 and the press plate 23 to fasten the fixing hook 222. The fixing hook 222 is used to hook the oil rail 4 to fix the oil rail 4. The clamping member 221 is connected to the bottom surface of the press plate 23 by a fastener, and the fastener is a bolt. The fixing hook 222 is located between the clamping member 221 and the press plate 23. When the bolts connecting the clamping member 221 and the press plate 23 are tightened, the clamping member 221 and the press plate 23 clamp the fixing hook 222, providing a pre-tightening force for the fixing hook 222, thereby fixing the position of the fixing hook 222. At the same time, the pressing member 221 can also bear the load of the fixing hook 222 , thereby preventing the fixing hook 222 from being deformed due to excessive load on the fixing hook 222 .

[0033] like Figure 5As shown, a pressing groove 223 is provided in the middle of the pressing member 221, and the depth of the pressing groove 223 is less than the thickness of the fixing hook 222, and the fixing hook 222 is located in the pressing groove 223. A pressing groove 223 is provided in the middle of the pressing member 221, and the fixing hook 222 is installed in the pressing groove 223. When the pressing member 221 is loosened, the fixing hook 222 can move freely in the pressing groove 223, thereby realizing the function of adjusting the position of the fixing hook 222. The groove walls at both ends of the pressing groove 223 have a blocking effect on the fixing hook 222, preventing the fixing hook 222 from sliding out of the pressing member 221. The length direction of the fixing hook 222 is perpendicular to the length direction of the pressing member 221, ensuring that the movable space of the fixing hook 221 reaches the maximum, which is the width of the pressing groove 223.

[0034] like Figure 7 As shown, the pressing member 221 is parallel to the pressing plate 23, and the fixing hook 222 is perpendicular to the pressing member 221. The pressing member 221 fixes the position of the fixing hook 222 by the pressing force, and the fixing hook 222 is perpendicular to the pressing member 221, ensuring that the pressing member 221 applies the same force to each part of the fixing hook 222 in the length direction. The pressing member 221 is parallel to the pressing plate 23, so the fixing hook 222 is also perpendicular to the pressing plate 23, so that the fixing hook 222 can extend out of the pressing plate 23 with the shortest length.

[0035] like Figure 6 As shown, the fixing hook 222 includes a circular hook 224, a connecting piece 225 and an L-shaped limiting hook 226. One end of the circular hook 224 is connected to the connecting piece 225, and the other end of the connecting piece 225 is connected to the L-shaped limiting hook 226. The L-shaped limiting hook 226 is hung on the side of the pressing plate 23 away from the oil rail 4. The L-shaped limiting hook 226 hooks the end of the pressing plate 23 away from the oil rail, and the L-shaped limiting hook 226 matches the thickness of the pressing plate 23, which plays a role in fixing the position of the fixing hook 222. The connecting piece 225 connects the circular hook 224 and the L-shaped limiting hook 225, and the connecting piece 225 abuts against the pressing piece 221. When the oil rail is placed into the circular hook 224, the circular hook 224 can play a role in fixing the oil rail. The radius of the circular hook 223 is the same as the radius of the oil rail.

[0036] like Figure 4 As shown, the fuel injector fixing device 21 is a shell structure with an upper opening. The fuel injector fixing device 21 is mainly used to form a two-point fixation for the fuel injector together with the fuel injector connection hole of the fuel rail, so that the fuel injector will not rotate. The fuel injector fixing device 21 is a shell structure with an upper opening, so that the fuel injector can move upward freely. The fuel injector fixing device 21 only limits the fuel injector from rotating, and does not affect the subsequent assembly of the fuel injector on the engine cylinder block and the disassembly of the installation tool.

[0037] Example 2

[0038] This embodiment is similar to the above-mentioned embodiment 1, except that: Figure 2 As shown, the pressing plate 23 is detachably connected to the mounting boss 1. After the fuel injector is installed on the fuel rail, it cannot be completely separated from the mounting fixture 2. The mounting fixture 2 needs to be used to continue fixing the fuel injector and the fuel rail during the transfer to the engine cylinder body. The mounting fixture 2 is connected to the support boss 1 through the pressing plate 23. The pressing plate 23 and the mounting boss 1 are set to be detachably connected. The pressing plate 23 can be removed after the fuel injector and the fuel rail are installed, so that the mounting fixture 2 moves with the fuel injector and the fuel rail as a whole. When the fuel injector and the fuel rail are installed on the engine cylinder body, the mounting fixture 2 can be removed.

[0039] like Figure 2 As shown, the press plate 23 is provided with a plurality of first positioning holes 24 along the length direction, and a positioning pin 11 is fixed on the upper surface of the support boss 1. The positioning pin 11 is inserted into the positioning hole 24 and protrudes from the upper surface of the press plate 23. The position of the positioning pin 11 matches the position of the mounting hole of the oil rail 4. The positioning pin 11 fixes the position of the press plate 23 on the horizontal plane. At the same time, the connection between the positioning pin 11 and the first positioning hole 24 on the press plate 23 is easy to disassemble. It is only necessary to move the press plate 23 upward. When the bottom surface of the press plate 23 is higher than the top surface of the positioning pin 11, the press plate 23 can be free from the restriction of the positioning pin 11 and move freely. The injector interface on the oil rail protrudes from the oil rail body and abuts against the press plate 23. A mounting hole is also provided on one side of the injector interface, and the mounting hole also abuts against the press plate 23. The position of the positioning pin 11 matches the position of the mounting hole of the oil rail. The positioning pin 11 can protrude from the upper surface of the press plate 23 so that the positioning pin 11 can be inserted into the mounting hole of the oil rail, thereby fixing the positions of the oil rail and the press plate 23 at the same time.

[0040] like Figure 2 As shown, the second positioning pin 3 is also included. The upper surface of the support boss 1 is provided with a second positioning hole 12. The pressing plate 23 is provided with a third positioning hole 25 at a position corresponding to the second positioning hole 12. The second positioning pin 3 can be inserted into the second positioning hole 12 and the third positioning hole 25. The second positioning pin 3 is easy to be pulled out from the second positioning hole 12 and the third positioning hole 25, so that the second positioning pin 3 can be easily removed while fixing the position of the pressing plate 23. While playing the role of fixing the position of the pressing plate 23, it will not affect the subsequent installation of the tooling 2 leaving the support boss 1.

[0041] Example 3

[0042] This embodiment is similar to the above-mentioned embodiment 1, except that: Figure 3 As shown, the upper surface of the supporting boss 1 is provided with a placement groove 13, and the placement groove 13 is arranged along the length direction of the press-fit plate 23. The placement groove 13 plays a supporting role for the oil rail.

[0043] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A quick installation device for a fuel rail injector, characterized in that: The invention comprises a supporting boss (1) and an installation tool (2), wherein the installation tool (2) comprises a pressing plate (23), an injector fixing device (21) for inserting an injector, and an oil rail fixing device (22) for hooking an oil rail, wherein the pressing plate (23) is installed on the supporting boss (1), and the injector fixing device (21) and the oil rail fixing device (22) are both fixed on the pressing plate (23).

2. A fuel rail injector quick installation device according to claim 1, characterized in that: The oil rail fixing device (22) comprises a pressing piece (221), a fixing hook (222) and a fastener, wherein the fixing hook (222) is located below the pressing plate (23), the pressing piece (221) is located below the fixing hook (222), and the fastener connects the pressing piece (221) and the pressing plate (23) to fasten the fixing hook (222).

3. A fuel rail injector quick installation device according to claim 2, characterized in that: A pressing groove (223) is provided in the middle of the pressing member (221); the depth of the pressing groove (223) is less than the thickness of the fixing hook (222); and the fixing hook (222) is located in the pressing groove (223).

4. A fuel rail injector quick installation device according to claim 2, characterized in that: The pressing piece (221) is parallel to the pressing plate (23), and the fixing hook (222) is perpendicular to the pressing piece (221).

5. The fuel rail injector quick installation device according to claim 2, characterized in that: The fixing hook (222) comprises a circular hook (224), a connecting piece (225) and an L-shaped limiting hook (226); one end of the circular hook (224) is connected to the connecting piece (225); the other end of the connecting piece (225) is connected to the L-shaped limiting hook (226); and the L-shaped limiting hook (226) is hung on a side of the pressing plate (23) away from the oil rail (4).

6. The fuel rail injector quick installation device according to claim 1, characterized in that: The fuel injector fixing device (21) is a shell structure with an open top.

7. The fuel rail injector quick installation device according to claim 1, characterized in that: The pressing plate (23) is detachably connected to the supporting boss (1).

8. The fuel rail injector quick installation device according to claim 7, characterized in that: The press-fit plate (23) is provided with a plurality of first positioning holes (24) along the length direction, and a positioning pin (11) is fixed on the upper surface of the support boss (1), and the positioning pin (11) is inserted into the positioning hole (24) and protrudes from the upper surface of the press-fit plate (23), and the position of the positioning pin (11) matches the position of the mounting hole of the oil rail (4).

9. The fuel rail injector quick installation device according to claim 1, characterized in that: The invention also comprises a second positioning pin (3), a second positioning hole (12) is arranged on the upper surface of the supporting boss (1), a third positioning hole (25) is arranged on the pressing plate (23) at a position corresponding to the second positioning hole (12), and the second positioning pin (3) can be inserted into the second positioning hole (12) and the third positioning hole (25).

10. The fuel rail injector quick installation device according to claim 1, characterized in that: The upper surface of the supporting boss (1) is provided with a placement groove (13), and the placement groove (13) is arranged along the length direction of the pressing plate (23).

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