Fuel injector seat and support assembly with fuel injector seat and support block integrally forged

Abstract

The utility model provides a fuel injector seat support assembly with a fuel injector seat and a support block integrally forged. A parting surface of the fuel injector seat support assembly is parallel to a hole shaft of the fuel injector seat or a hole shaft of the support block. Or the side edge parting lines on the two sides of the fuel injector seat support assembly are parallel to the hole axis of the fuel injector seat or the hole axis of the support block. The forging device solves the problem of how to reduce the weight of the forging stock required by forging of the oil injector seat support assembly and the problem of large subsequent machining allowance in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel distribution pipes of internal combustion engines, in particular to an injector seat bracket assembly in which an injector seat and a bracket block are integrally forged. Background Art

[0002] The existing one-piece forged high-pressure fuel rail injector seat and bracket block injector seat bracket assembly is made of injector seat and bracket block forged as a whole. Its parting surface 8 is perpendicular to the axis of the injector hole and the axis of the bracket block bolt hole, see Figures 1 to 5 The parting surface 8 of the injector seat bracket assembly is located at the arc surface processing portion 9 (i.e., the parting surface 8 divides the existing injector seat bracket assembly into the upper assembly portion 6 and the lower assembly portion 7). The arc surface processing portion 9 is solid and needs to be processed into the arc surface 9-1 later. The parting structure of the injector seat bracket assembly results in a large forging blank weight (for example, the forging blank weight needs to be about 234g), a large arc surface processing allowance, and high cost.

[0003] Therefore, how to solve the problem of heavy weight of the forging blank of the injector seat bracket assembly has become a technical problem that needs to be solved.

[0004] In addition, how to reduce the machining allowance of arc surfaces has also become a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the present utility model is to provide a method for solving the above-mentioned problems in the prior art: one is to reduce the problem of heavy weight of the forging blank of the injector seat bracket assembly; the other is to reduce the machining allowance of the arc surface of the injector seat bracket assembly.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an injector seat bracket assembly in which the injector seat and the bracket block are forged as one piece, characterized in that: the parting surface of the injector seat bracket assembly is parallel to the hole axis of the injector seat or parallel to the hole axis of the bracket block; or the side parting lines on both sides of the injector seat bracket assembly are parallel to the hole axis of the injector seat or parallel to the hole axis of the bracket block.

[0007] Furthermore, the injector seat bracket assembly is divided into an assembly front side and an assembly rear side with the parting surface or the side parting line as the boundary; the assembly front side is provided with a first recess corresponding to the area between the injector seat and the bracket block.

[0008] Furthermore, a second recess is provided on the rear side of the assembly corresponding to a portion between the injector seat and the bracket block.

[0009] Furthermore, the portion of the front side of the assembly corresponding to the injector seat is provided with an injector seat arc surface processed by a first groove preset in the front side of the assembly, and the portion of the front side of the assembly corresponding to the bracket block is provided with a bracket block arc surface processed by a second groove preset in the front side of the assembly.

[0010] Furthermore, the arc surface of the injector seat and the arc surface of the bracket block are separate, and the curvatures of the two are the same.

[0011] Furthermore, the top of the front side of the assembly and the top of the rear side of the assembly are connected to form the top surface of the assembly, the top of the arc surface of the injector seat is flush with the top surface of the assembly, and the top of the arc surface of the bracket block is flush with the top surface of the assembly.

[0012] Furthermore, the top mold lines of the front side portion and the rear side portion of the assembly are flat at locations corresponding to the top surface of the assembly.

[0013] Furthermore, the bottom of the front side portion of the assembly and the bottom of the rear side portion of the assembly are connected to form the bottom surface of the assembly, and the bottom parting lines of the front side portion of the assembly and the rear side portion of the assembly corresponding to the portion of the bottom surface of the assembly are plane.

[0014] Furthermore, the arc surface of the injector seat and the arc surface of the bracket block are both located in the upper middle part of the front side of the assembly.

[0015] Furthermore, a portion of the front side of the assembly corresponding to the injector seat is provided with an injector seat arc surface, and a portion of the front side of the assembly corresponding to the bracket block is provided with a bracket block arc surface.

[0016] In view of the above technical features, the utility model has the following beneficial effects:

[0017] 1. The present invention discloses an injector seat bracket assembly with an integrally forged injector seat and bracket block. The assembly is integrally forged using an upper die and a lower die in a forging process. During forging, the upper and lower dies correspond to a parting surface, forming an integrated injector seat and bracket block. The parting surface is formed by the parting line between the front assembly portion formed in the upper die and the rear assembly portion formed in the lower die. The parting surface is parallel to the axis of the injector seat or the axis of the bracket block. This facilitates the simultaneous formation of a first recess, a predetermined first groove, and a predetermined second groove in the front assembly portion during forging. The first recess reduces the overall weight of the forged blank required for the injector seat bracket assembly, thereby resolving the issue of heavy forged blanks for the injector seat bracket assembly and reducing costs while maintaining strength. The preset first groove and the preset second groove can also reduce the weight of the forging blank required for the forging process of the injector seat bracket assembly and the weight of the injector seat bracket assembly as a whole, thereby resolving the problem of the heavy forging blank of the injector seat bracket assembly, reducing costs, and maintaining strength. At the same time, the preset first groove can be processed into the injector seat arc surface with only a little subsequent processing, and the preset second groove can be processed into the bracket block arc surface with only a little subsequent processing, with a smaller machining allowance for the arc surface, thus saving more material and reducing costs. The parting surface is parallel to the hole axis of the injector seat or the hole axis of the bracket block, which also facilitates the processing of the second recessed portion at the rear side of the assembly during forging. This can reduce the weight of the forging blank required for the forging process of the injector seat bracket assembly and the weight of the injector seat bracket assembly as a whole, thereby resolving the problem of the heavy forging blank of the injector seat bracket assembly, reducing costs, and maintaining strength as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the injector seat bracket assembly in the prior art Figure 1 (Before arc surface processing).

[0019] Figure 2 This is a schematic diagram of the structure of the injector seat bracket assembly in the prior art Figure 2 (Before arc surface processing).

[0020] Figure 3 This is a schematic diagram of the structure of the injector seat bracket assembly in the prior art Figure 3 (After arc surface processing).

[0021] Figure 4 This is a schematic diagram of the structure of the injector seat bracket assembly in the prior art Figure 4 (After arc surface processing).

[0022] Figure 5 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 1 (Before arc surface processing).

[0023] Figure 6 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 2 (Before arc surface processing).

[0024] Figure 7 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 3 (After arc surface processing).

[0025] Figure 8 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 4 (After arc surface processing).

[0026] Figure 9 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 5 (Another design, after arc surface processing).

[0027] Figure 10 This is a schematic diagram of the structure of the injector seat bracket assembly in specific embodiment 1 Figure 6 (Another design, after arc surface processing).

[0028] In the figure: 1, front side of the assembly; 1-1, first groove; 1-2, second groove; 1-3, first recess;

[0029] 2. Rear side of the assembly; 2-1. Second recess;

[0030] 3. Parting surface; 3-1. Top parting line; 3-2. Side parting line;

[0031] 4. Injector seat; 4-1. Arc surface of injector seat; 4-1-1. Top of the arc surface of injector seat;

[0032] 5. Bracket block; 5-1. Bolt hole of bracket block; 5-2. Arc surface of bracket block; 5-2-1. Top of arc surface of bracket block;

[0033] In the prior art

[0034] 6. Upper part of the assembly;

[0035] 7. Lower part of the assembly;

[0036] 8. Existing parting surface;

[0037] 9. Arc surface processing area; 9-1. Existing arc surface. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.

[0039] See also Figures 6 to 10 Specific embodiment 1: This embodiment 1 provides an injector seat bracket assembly in which the injector seat and bracket block are integrally forged. The parting surface 3 of the injector seat bracket assembly is parallel to the hole axis of the injector seat 4 (i.e., the hole axis of the mounting hole of the injector seat 4) or the hole axis of the bracket block 5 (i.e., the hole axis of the bracket block bolt hole 5-1). Alternatively, the side parting lines 3-2 on both sides of the injector seat bracket assembly are parallel to the hole axis of the injector seat 4 or the hole axis of the bracket block 5.

[0040] In this embodiment 1, an injector seat and support block integrally forged as a fuel injector seat are integrally forged using an upper die and a lower die of a forging machine. During forging, a corresponding parting surface 3 is formed between the upper and lower dies. After parting, the fuel injector seat and support block are formed as a single unit. The parting surface 3 is formed by the parting line between the front side of the assembly formed in the upper die and the rear side of the assembly formed in the lower die. The parting surface 3 is parallel to the bore axis of the fuel injector seat 4 or the bore axis of the support block 5. The parting surface 3 includes a top parting line 3-1, a bottom parting line, and side parting lines 3-2. The parting surface 3 is generally planar. The four edges of the parting surface 3 do not intersect or interfere with the arcuate surface 4-1 of the fuel injector seat and the arcuate surface 5-2 of the support block. This facilitates the simultaneous formation of the first recess 1-3 during forging of the front side 1 of the assembly. The first recess 1-3 can reduce the overall weight of the forging blank required for the forging process of the injector seat bracket assembly, as well as the weight of the injector seat bracket assembly, thereby resolving the issue of heavy forging blanks. The parting surface 3 is parallel to the hole axis of the injector seat 4 or the hole axis of the bracket block 5, facilitating the simultaneous formation of the second recess 2-1 during forging of the rear side portion 2 of the assembly. This can reduce the overall weight of the forging blank required for the forging process of the injector seat bracket assembly, as well as the weight of the injector seat bracket assembly, thereby resolving the issue of heavy forging blanks for the injector seat bracket assembly.

[0041] The injector seat bracket assembly is divided into an assembly front side portion 1 and an assembly rear side portion 2 with the parting surface 3 or the plane where the side parting line 3-2 is located as the boundary; a first recess 1-3 is provided in the assembly front side portion 1 corresponding to the area between the injector seat 4 and the bracket block 5, thereby reducing the weight of the forging blank required for the forging process of the injector seat bracket assembly and the weight of the injector seat bracket assembly, that is, solving the problem of the large forging blank weight of the injector seat bracket assembly, reducing costs, and maintaining strength.

[0042] A second recess 2-1 is provided on the rear side portion 2 of the assembly corresponding to the area between the injector seat 4 and the bracket block 5, which reduces the weight of the forging blank required for the forging process of the injector seat bracket assembly and the weight of the injector seat bracket assembly, that is, solves the problem of the large weight of the forging blank of the injector seat bracket assembly, reduces costs, and maintains the same strength.

[0043] The portion of the front side of the assembly 1 corresponding to the injector seat 4 is provided with an injector seat arc surface 4-1, and the portion of the front side of the assembly 1 corresponding to the bracket block 5 is provided with a bracket block arc surface 5-2. The injector seat arc surface 4-1 and the bracket block arc surface 5-2 are separate and have the same curvature. For example, the first recess 1-3 is located between the injector seat arc surface 4-1 and the bracket block arc surface 5-2, separating the injector seat arc surface 4-1 from the bracket block arc surface 5-2 to form two separate arc surfaces. This allows for more uniform and complete copper glue penetration when the injector seat bracket assembly is subsequently welded to the fuel pipe. Compared to the prior art, where the injector seat 4 and bracket block 5 share a single strip-shaped arc surface, in this embodiment 1, the injector seat 4 and bracket block 5 correspond to the injector seat arc surface 4-1 and the bracket block arc surface 5-2, respectively. This allows for better copper glue penetration and welding, improving the reliability, weld strength, and sealing of each arc surface during brazing, and preventing cold welds that can occur during large-area brazing. The injector seat arc surface 4-1 and the bracket block arc surface 5-2 have the same curvature, facilitating welding to the same fuel pipe.

[0044] The top of the front assembly section 1 and the top of the rear assembly section 2 are connected to form the assembly top surface. The top of the injector seat arc surface 4-1-1 is flush with the assembly top surface, and the top of the bracket block arc surface 5-2-1 is flush with the assembly top surface. The top portion of the front assembly section 1 and the rear assembly section 2, where the mold line 3-1 corresponds to the assembly top surface, is flat. This design ensures the connection strength between the injector seat bracket assembly and the fuel pipe while reducing the weight of the forging blank required for the injector seat bracket assembly forging process and the weight of the injector seat bracket assembly, thereby reducing costs and resolving the issue of the heavy forging blank of the injector seat bracket assembly.

[0045] The bottom of the front assembly 1 and the bottom of the rear assembly 2 are connected to form the assembly bottom surface. The bottom parting lines of the front assembly 1 and the rear assembly 2 (not shown in the figure) correspond to the flat area of ​​the assembly bottom surface. This design adjusts the overall height of the injector seat bracket assembly.

[0046] The injector seat arc surface 4-1 and the bracket block arc surface 5-2 are both located in the upper middle part of the front side portion 1 of the assembly.

[0047] See also Figures 5 to 10Specific embodiment 2, this embodiment 2 provides an injector seat bracket assembly in which an injector seat 4 and a bracket block 5 are integrally forged. The difference between this embodiment 2 and embodiment 1 is that: the portion of the assembly front side portion 1 corresponding to the injector seat 4 is provided with a first groove 1-1 preset by the assembly front side portion 1 (see Figure 5 ) Processed injector seat arc surface 4-1 (see Figure 7 ), the front side of the assembly 1 is provided with a second groove 1-2 preset by the front side of the assembly 1 at a position corresponding to the bracket block 5 (see Figure 5 ) Processed bracket block arc surface 5-2 (see Figure 7 ). The parting surface 3 formed by the parting lines of the front side portion 1 and the rear side portion 2 of the assembly is designed to be parallel to the hole axis of the injector seat 4 or the hole axis of the bracket block 5. This makes it easy to process the preset first groove 1-1 and the preset second groove 1-2 at the same time when the front side portion 1 of the assembly is forged. The preset first groove 1-1 and the preset second groove 1-2 can also reduce the weight of the forging blank required for the forging process of the injector seat bracket assembly as a whole. At the same time, the preset first groove 1-1 only needs to be slightly processed to be processed into the injector seat arc surface 4-1, and the preset second groove 1-2 only needs to be slightly processed to be processed into the bracket block arc surface 5-2. The arc surface processing allowance is smaller and the machining cost is low, which saves more materials and reduces costs.

[0048] The injector seat bracket assembly of this embodiment 2 requires a forging blank weighing 182g, which is 52g lighter than the conventional design (i.e., the injector seat bracket assembly in the prior art requires a forging blank weighing 234g), with a weight reduction ratio of 22.2%. This effectively reduces the forging blank weight required for the forging process of the injector seat bracket assembly and the weight of the injector seat bracket assembly, thereby reducing costs and solving the problem of the large forging blank weight of the injector seat bracket assembly.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fuel injector seat bracket assembly with an injector seat and a bracket block integrally forged, characterized by: The parting surface (3) of the fuel injector seat bracket assembly is parallel to the hole axis of the fuel injector seat (4) or the hole axis of the bracket block (5); or the side parting lines (3-2) on both sides of the fuel injector seat bracket assembly are parallel to the hole axis of the fuel injector seat (4) or the hole axis of the bracket block (5); The fuel injector seat bracket assembly is divided into an assembly front side portion (1) and an assembly rear side portion (2) with the plane where the parting surface (3) or the side parting line (3-2) is located as a boundary; A first recess (1-3) is provided on the front side portion (1) of the assembly, corresponding to a portion between the injector seat (4) and the bracket block (5); A second recess (2-1) is provided on the rear side portion (2) of the assembly, corresponding to a portion between the injector seat (4) and the bracket block (5).

2. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 1, characterized in that: A portion of the front side portion (1) of the assembly corresponding to the injector seat (4) is provided with an injector seat arc surface (4-1) formed by processing a first groove (1-1) preset in the front side portion (1), and a portion of the front side portion (1) of the assembly corresponding to the bracket block (5) is provided with a bracket block arc surface (5-2) formed by processing a second groove (1-2) preset in the front side portion (1).

3. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 2, characterized in that: The circular arc surface (4-1) of the fuel injector seat and the circular arc surface (5-2) of the bracket block are separated, and the arcs of the two are the same.

4. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 3, characterized in that: The top of the front side portion (1) of the assembly and the top of the rear side portion (2) of the assembly are connected to form the assembly top surface. The top of the arc surface of the injector seat (4-1-1) is flush with the assembly top surface. The top of the arc surface of the bracket block (5-2-1) is flush with the assembly top surface.

5. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 4, characterized in that: The top mold lines (3-1) of the front side portion (1) and the rear side portion (2) of the assembly are plane at positions corresponding to the top surface of the assembly.

6. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 5, characterized in that: The bottom of the assembly front side portion (1) and the bottom of the assembly rear side portion (2) are connected to form the assembly bottom surface, and the bottom parting lines of the assembly front side portion (1) and the assembly rear side portion (2) corresponding to the assembly bottom surface are plane.

7. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 6, characterized in that: The injector seat arc surface (4-1) and the bracket block arc surface (5-2) are both located in the upper middle portion of the front side portion (1) of the assembly.

8. The fuel injector seat bracket assembly comprising a fuel injector seat and a bracket block integrally forged according to claim 1, characterized in that: The position of the front side portion (1) of the assembly corresponding to the injector seat (4) is provided with an injector seat arc surface (4-1), and the position of the front side portion (1) of the assembly corresponding to the bracket block (5) is provided with a bracket block arc surface (5-2).

Images