A limiting installation assembly for an electronically controlled fuel injector

Abstract

The utility model relates to electric control oil atomizer installation technical field, concretely for a kind of limiting installation component for electric control oil atomizer, including base, the movable clamping seat that can be adjusted position along vertical direction is configured on the base, and fixed clamping seat is fixedly installed on the base, the side opposite of movable clamping seat and fixed clamping seat is all set with the adaptive arc clamping groove, by adjusting the vertical position of movable clamping seat, make the arc clamping groove of movable clamping seat and fixed clamping seat corresponding split, the double clamping passageway formed by movable clamping seat and fixed clamping seat split, realize the radial clamping of oil inlet pipe, oil return pipe, the adaptation of the limiting baffle ring of oil pipe connecting end portion and arc clamping groove, complete axial location, double limiting structure effectively resist displacement risk caused by engine high-frequency vibration, fuel pressure impact, solve the oil pipe loosening problem caused by traditional single fixed mode, guarantee connection part long-term stability.

Description

Technical Field

[0001] This utility model relates to the field of electronic fuel injector installation technology, specifically a limiting installation component for electronic fuel injectors. Background Technology

[0002] As the core actuator of the engine fuel supply system, the stability of the connection between the inlet and return lines of the electronic fuel injector directly affects the fuel injection accuracy, system sealing, and engine reliability. During engine operation, high-frequency vibration, temperature fluctuations, and fuel pressure shocks can have a continuous impact on the fuel line connection.

[0003] Currently, the fuel line installation structure of existing electronic fuel injectors generally uses a single clamp or bolt for direct fixation. However, this connection method has certain defects, namely, the lack of targeted axial and radial limiting structures, which makes the fuel line prone to displacement and loosening under vibration, and even risks such as sealing failure at the connection between the fuel line and the injector and fuel leakage, which seriously affect the normal operation of the engine. Therefore, this utility model proposes a limiting installation component for electronic fuel injectors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a limiting installation component for electronic fuel injectors to solve the problem of limiting difference mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a limiting installation assembly for an electronic fuel injector, comprising a base, on which a movable clamping seat that can be adjusted vertically is disposed, and a fixed clamping seat is fixedly installed on the base. The movable clamping seat and the fixed clamping seat each have a matching arc-shaped clamping groove on their opposite sides. By adjusting the vertical position of the movable clamping seat, the arc-shaped clamping grooves of the movable clamping seat and the fixed clamping seat are aligned and fitted together to form a double clamping channel for clamping and limiting the left oil inlet pipe and the right oil return pipe respectively.

[0006] Preferably, the connecting ends of the left oil inlet pipe and the right oil return pipe are both fixedly fitted with limit retaining rings. The outer periphery of the limit retaining ring is perfectly matched with the inner contour of the arc-shaped clamping groove formed after the movable clamping seat and the fixed clamping seat are assembled, and the limit retaining ring can be embedded in the arc-shaped clamping groove to achieve axial positioning.

[0007] Preferably, the middle region of the fixed clamping seat is equipped with a flow guide connecting pipe, which is detachably fixed to the fixed clamping seat by a fastening locking ring; the left end of the flow guide connecting pipe extends axially into the cavity of the left oil inlet pipe, and the right end extends correspondingly into the cavity of the right oil return pipe.

[0008] Preferably, an elastic support spring is vertically mounted between the bottom end face of the movable clamping seat and the top end face of the fixed clamping seat. The upper end of the elastic support spring is fixedly connected to the movable clamping seat, and the lower end is correspondingly fixedly connected to the fixed clamping seat.

[0009] Preferably, the base has threaded grooves symmetrically distributed on the left and right sides, and each threaded groove is threaded with a guide positioning post. The guide positioning post extends vertically, and its rod part passes through the inner ring channel of the elastic support spring from top to bottom and passes through the movable clamping seat.

[0010] Preferably, positioning plates are fixed to both sides of the base, and locking pins are spirally connected to the positioning plates on both sides of the base. The locking pins are adapted to the screw cavities opened on both sides of the movable clamping seat.

[0011] Preferably, positioning blocks are fixed to both sides of the base.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The dual clamping channel formed by the combination of the movable clamping seat and the fixed clamping seat enables radial clamping of the oil inlet and return pipes. Combined with the matching of the limiting ring at the end of the oil pipe connection and the arc-shaped clamping groove, axial limiting is achieved. The dual limiting structure effectively resists the displacement risk caused by high-frequency vibration of the engine and fuel pressure impact, solves the problem of oil pipe loosening caused by the traditional single fixing method, and ensures the long-term stability of the connection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the installation structure of the movable clamping seat of this utility model.

[0015] Figure 3 This is a schematic diagram of the installation structure of the left oil inlet pipe and the right oil return pipe of this utility model.

[0016] Figure 4 This is a schematic diagram of the fixed clamping base structure of this utility model.

[0017] In the diagram: 1. Base; 11. Threaded groove; 2. Positioning block; 3. Movable clamping seat; 31. Threaded cavity; 4. Fixed clamping seat; 41. Arc-shaped clamping groove; 5. Elastic support spring; 6. Guide positioning post; 7. Positioning plate; 71. Locking post; 8. Left oil inlet pipe; 81. Right oil return pipe; 82. Limiting retaining ring; 9. Flow guide connecting pipe; 10. Fastening locking ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 4 This utility model provides a technical solution: a limiting installation component for an electronic fuel injector, including a base 1, a movable clamping seat 3 that can be adjusted vertically on the base 1, and a fixed clamping seat 4 fixedly installed on the base 1. The movable clamping seat 3 and the fixed clamping seat 4 are respectively provided with matching arc-shaped clamping grooves 41. By adjusting the vertical position of the movable clamping seat 3, the arc-shaped clamping grooves 41 of the movable clamping seat 3 and the fixed clamping seat 4 are matched and spliced ​​to form a double clamping channel for clamping and limiting the left oil inlet pipe 8 and the right oil return pipe 81 respectively.

[0020] By matching the arc-shaped clamping groove 41 on the movable clamping seat 3 and the fixed clamping seat 4, a double clamping channel is formed for the left oil inlet pipe 8 and the right oil return pipe 81, which can achieve reliable radial limiting. At the same time, this structure, together with the subsequent limiting retaining ring 82 design, can further complete the axial limiting, solve the problem of insufficient limiting caused by traditional single clamp or bolt fixing, effectively resist the risk of oil pipe displacement caused by vibration and pressure impact, and ensure stable connection.

[0021] Please see Figures 2 to 4 It is understood that the connecting ends of the left oil inlet pipe 8 and the right oil return pipe 81 are both fixedly fitted with limit retaining rings 82. The outer periphery of the limit retaining ring 82 is perfectly matched with the inner contour of the arc-shaped clamping groove 41 formed by the combination of the movable clamping seat 3 and the fixed clamping seat 4, and the limit retaining ring 82 can be embedded in the arc-shaped clamping groove 41 to achieve axial limitation.

[0022] The outer contour of the limiting retaining ring 82 is perfectly matched with the inner contour of the arc-shaped clamping groove 41 after the movable clamping seat 3 and the fixed clamping seat 4 are assembled. After being embedded, it can form a rigid axial constraint, which restricts the axial movement of the left oil inlet pipe 8 and the right oil return pipe 81. This makes up for the lack of axial limiting in the traditional single fixed structure and effectively resists the axial tension or thrust caused by high-frequency vibration of the engine and fuel pressure shock.

[0023] Please see Figure 3 , Figure 4It is understood that the middle area of ​​the fixed clamping seat 4 is equipped with a flow guide pipe 9, and the flow guide pipe 9 is detachably fixedly connected to the fixed clamping seat 4 through the fastening locking ring 10; the left end of the flow guide pipe 9 extends axially into the cavity of the left oil inlet pipe 8, and the right end extends correspondingly into the cavity of the right oil return pipe 81.

[0024] The guide pipe 9 extends from the left end into the cavity of the left oil inlet pipe 8 and from the right end into the cavity of the right oil return pipe 81, forming an internal nested connection. Compared with the traditional direct docking method, this increases the sealing contact area. Combined with the fastening locking ring 10 for the detachable fixing of the guide pipe 9, the installation stability between the connecting pipe and the fixed clamp 4 is ensured.

[0025] Please see Figure 2 , Figure 4 It is understood that an elastic support spring 5 is vertically mounted between the bottom end face of the movable clamping seat 3 and the top end face of the fixed clamping seat 4. The upper end of the elastic support spring 5 is fixedly connected to the movable clamping seat 3, and the lower end is fixedly connected to the fixed clamping seat 4.

[0026] During installation, the elastic force of the elastic support spring 5 can assist the movable clamping seat 3 to slide vertically along the guide positioning post 6, and the clamping distance can be adjusted without applying excessive force, which facilitates the quick insertion and positioning of the left oil inlet pipe 8 and the right oil return pipe 81. After the movable clamping seat 3 is fixed by the locking post 71, the preload of the elastic support spring 5 can further compact the locking structure, prevent the locking post 71 from loosening due to vibration, improve the overall installation firmness and operation convenience, and reduce the assembly difficulty.

[0027] Please see Figure 2 , Figure 4 It is understood that threaded grooves 11 are symmetrically distributed on the left and right sides of the base 1. Each threaded groove 11 is threaded with a guide positioning post 6. The guide positioning post 6 extends vertically, and its rod part passes through the inner ring channel of the elastic support spring 5 from top to bottom and passes through the movable clamping seat 3.

[0028] The guide positioning post 6 extends vertically and passes through the movable clamping seat 3, and is fixed by the threaded groove 11 of the base 1, forming a rigid guide constraint to ensure that the movable clamping seat 3 can only be adjusted along the vertical straight line, avoiding problems such as lateral offset and torsion during the adjustment process.

[0029] Please see Figure 1 , Figure 2 It is understood that positioning plates 7 are fixedly connected to both sides of the base 1, and locking pins 71 are spirally connected to the positioning plates 7 on both sides of the base 1. The locking pins 71 are adapted to the screw cavities 31 opened on both sides of the movable clamping seat 3.

[0030] The locking pin 71 is adapted to the screw cavity 31 of the movable clamping seat 3 through the screw connection of the positioning plate 7. After tightening, the movable clamping seat 3 can be fixed in the preset vertical position. Compared with simply relying on the preload of the elastic support spring 5, the mechanical locking structure can prevent the vertical movement of the movable clamping seat 3 caused by the high-frequency vibration of the engine, and ensure that the radial clamping force of the arc-shaped clamping groove 41 on the left oil inlet pipe 8 and the right oil return pipe 81 remains stable.

[0031] Please see Figure 1 Understood, positioning blocks 2 are fixed to both sides of the base 1.

[0032] During installation, the entire assembly is first positioned and fixed using the positioning blocks 2 on both sides of the base 1. The connecting ends of the left inlet pipe 8 and the right return pipe 81 are aligned with the fixing clamp 4, so that both ends of the guide connecting pipe 9 are embedded into the cavities of the two oil pipes, forming a sealed connection. Then, the locking pin 71 is released, and the elastic support spring 5 releases its elastic force, pushing the movable clamp 3 vertically upward along the guide positioning pin 6. After adjusting to a suitable distance, the oil pipe is inserted. At this point, the limit retaining ring 82 is aligned with the arc-shaped clamping groove 41. Tighten the locking pin 71 on the positioning plate 7 so that it engages with the screw cavity 31 of the movable clamping seat 3, fixing the movable clamping seat 3 in the preset position. The arc-shaped clamping groove 41 is assembled to form a double clamping channel to achieve radial clamping of the oil pipe. The limiting retaining ring 82 is embedded in the groove to complete axial limiting, forming double fixation. The guide positioning pin 6 is fixed by the threaded groove 11 to limit the lateral displacement of the movable clamping seat 3. The preload of the elastic support spring 5 compensates for vibration and thermal expansion and contraction. The fastening locking ring 10 ensures stable sealing of the guide connecting pipe 9.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting mounting assembly for an electronic fuel injector, comprising a base (1), characterized in that: The base (1) is provided with a movable clamping seat (3) that can be adjusted vertically, and a fixed clamping seat (4) is fixedly installed on the base (1). The movable clamping seat (3) and the fixed clamping seat (4) are provided with matching arc-shaped clamping grooves (41) on opposite sides. By adjusting the vertical position of the movable clamping seat (3), the arc-shaped clamping grooves (41) of the movable clamping seat (3) and the fixed clamping seat (4) are aligned and spliced ​​to form a double clamping channel for clamping and limiting the left oil inlet pipe (8) and the right oil return pipe (81) respectively.

2. The limiting mounting assembly for an electronic fuel injector according to claim 1, characterized in that: The connecting ends of the left oil inlet pipe (8) and the right oil return pipe (81) are both fixedly fitted with limit retaining rings (82). The outer periphery of the limit retaining ring (82) is perfectly matched with the inner contour of the arc-shaped clamping groove (41) formed by the combination of the movable clamping seat (3) and the fixed clamping seat (4), and the limit retaining ring (82) can be embedded in the arc-shaped clamping groove (41) to achieve axial positioning.

3. A limiting mounting assembly for an electronic fuel injector according to claim 2, characterized in that: The middle area of ​​the fixed clamping seat (4) is equipped with a flow guide pipe (9), which is detachably fixed to the fixed clamping seat (4) through a fastening locking ring (10); the left end of the flow guide pipe (9) extends axially into the cavity of the left oil inlet pipe (8), and the right end extends to the cavity of the right oil return pipe (81).

4. A limiting mounting assembly for an electronic fuel injector according to claim 2, characterized in that: An elastic support spring (5) is vertically mounted between the bottom end face of the movable clamping seat (3) and the top end face of the fixed clamping seat (4). The upper end of the elastic support spring (5) is fixedly connected to the movable clamping seat (3), and the lower end is fixedly connected to the fixed clamping seat (4).

5. A limiting mounting assembly for an electronic fuel injector according to claim 1, characterized in that: The base (1) has symmetrically distributed threaded grooves (11) on its left and right sides. Each threaded groove (11) is threaded with a guide positioning post (6). The guide positioning post (6) extends vertically, and its rod part passes through the inner ring channel of the elastic support spring (5) from top to bottom and passes through the movable clamping seat (3).

6. A limiting mounting assembly for an electronic fuel injector according to claim 5, characterized in that: The base (1) has positioning plates (7) fixedly connected to both sides of the base (1), and locking pins (71) are spirally connected to the positioning plates (7) on both sides of the base (1). The locking pins (71) are adapted to the screw cavities (31) opened on both sides of the movable clamping seat (3).

7. A limiting mounting assembly for an electronic fuel injector according to claim 6, characterized in that: Positioning blocks (2) are fixedly connected to both sides of the base (1).

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