Oil return pipe of oil injector

Abstract

The utility model relates to the technical field of oil sprayers, and discloses an oil return pipe of an oil sprayer, which comprises a base which can be a flat surface but is not limited to the flat surface. The oil return pipe main body is arranged on the base; the mounting assembly is arranged between the base and the oil return pipe main body, the mounting assembly is used for fixing the position of the oil return pipe main body and comprises a movable block and a fixed block, the movable block is elastically connected with the base, an arc-shaped hole is formed between the movable block and the fixed block, and a spring is extruded due to lifting of the lifting block and deforms due to extrusion; the spring pushes the lifting block downwards through deformation force, the lifting block drives the movable block, the movable block is in close contact with the fixed block all the time under the force of the spring, the oil return pipe body is located between the movable block and the fixed block, a screw fixing mode is replaced through mechanical transmission fit, and the situation that a gap between a rusted threaded column and a nut is filled with rusted matter is avoided; therefore, the threaded rod and the nut are difficult to detach by a detaching tool.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel injectors, and in particular relates to an oil return pipe of a fuel injector. Background Art

[0002] Most cars now have a return oil pipe. After the fuel pump supplies fuel to the engine and forms a certain pressure, in addition to the normal fuel supply to the fuel nozzle for injection, the remaining fuel is sent back to the fuel tank through the return oil pipe. Of course, the excess gasoline vapor collected by the carbon canister also returns to the fuel tank through the return oil pipe. The return oil pipe can return excess oil to the fuel tank, which can relieve the pressure of gasoline and reduce fuel consumption.

[0003] A document with publication number (CN217002121U) was retrieved and disclosed an injector oil return pipe structure, including an oil return pipe, an inner rubber ring and a clamp, as well as a rubber sheath, a threaded rod and a nut. Inner rubber rings are respectively provided at both ends of the oil return pipe, and the inner rubber ring is glued to the inner wall of the oil return pipe. A clamp is provided on the oil return pipe, and a rubber sheath is provided at one end of the clamp. Corresponding mounting ears are respectively provided at both ends of the clamp.

[0004] The above-mentioned device provides personnel with a stable and well-sealed oil return pipe through an assembly consisting of an oil return pipe, an inner rubber ring, a clamp, a rubber sheath, a threaded rod and a nut. It can also protect the interface of the oil return pipe to prevent the pipe interface from cracking due to long-term bending, which may cause the pipe surface to crack.

[0005] When the above device is used for a long time, the threaded rod and nut will be exposed to the outside and their surfaces will rust due to oxidation. The gap between the rusted threaded column and the nut will be filled with rust, making it difficult to remove the threaded rod and the nut with disassembly tools.

[0006] In view of this, the present utility model is proposed. Utility Model Content

[0007] In order to solve the technical problem that the threaded rod and nut are difficult to remove due to rust, the basic idea of ​​the technical solution adopted by the utility model is:

[0008] A fuel injector oil return pipe includes a base, which can be a flat surface but is not limited to a flat surface; an oil return pipe body, which is arranged on the base; a mounting assembly, which is arranged between the base and the oil return pipe body, and is used to fix the position of the oil return pipe body, and the mounting assembly includes a movable block and a fixed block, the movable block is elastically connected to the base, the fixed block is fixedly connected to the base, an arc hole is opened between the movable block and the fixed block, and the oil return pipe body is fixed by the movable block and the fixed block; and a fixing assembly, which is arranged between the base and the movable block, and is used to limit the position of the movable block.

[0009] As a preferred embodiment of the present invention, the mounting assembly further comprises a bracket, the bracket is fixedly connected to the base, a sliding groove is provided in the bracket, and the movable block is elastically connected to the bracket.

[0010] As a preferred embodiment of the present invention, the installation assembly also includes a limiting roller and a lifting block, the limiting roller is fixedly connected to the bracket, the lifting block is elastically connected to the limiting roller, the lifting block is slidingly connected to the slide groove in the bracket, and the movable block is fixedly connected to one end of the lifting block.

[0011] As a preferred embodiment of the present invention, the mounting assembly further comprises a spring, which is sleeved on the limiting roller, one end of the spring is fixedly connected to the lifting block, and the other end of the spring is fixedly connected to the lifting block.

[0012] As a preferred embodiment of the present invention, the fixing assembly includes a support, a clamping block and a clamping seat, the support is fixedly connected to the base, the clamping seat is fixedly connected to the base, one end of the clamping block is clamped to the clamping seat, and the other end of the clamping block is transmission connected to the movable block.

[0013] As a preferred embodiment of the present invention, the fixing assembly further includes a connecting rod, one end of the connecting rod is connected to the clamping block via a fastener, and the other end of the connecting rod is movably connected to the support.

[0014] As a preferred embodiment of the present invention, the fixing assembly further includes a transmission frame and a connecting shaft, one end of the transmission frame is rotatably connected to the support, the connecting shaft is rotatably connected to the transmission frame, and the other end of the connecting rod is fixedly connected to the connecting shaft.

[0015] As a preferred embodiment of the present invention, the other end of the transmission frame is rotatably connected to the lifting block, the clamping seat is T-shaped as a whole, and an arc-shaped protrusion is provided at one end of the clamping seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In this fuel injector oil return pipe, the spring is squeezed due to the lifting and lowering of the lifting block, and the squeezing causes deformation. The spring pushes the lifting block downward through the force of the deformation, and the lifting block drives the movable block. The movable block is always in close contact with the fixed block due to the force of the spring. The main body of the oil return pipe is located between the movable block and the fixed block. It is fixed by mechanical transmission instead of screws to prevent the gap between the rusted threaded column and the nut from being filled with rust, which makes it difficult to remove the threaded rod and the nut with disassembly tools.

[0018] 2. This type of injector oil return pipe, the clamping block is manually pulled to engage with the clamping seat, and the clamping block drives the lifting block to move downward through the cooperation between the connecting shaft, the connecting rod and the transmission frame, thereby intervening in the movement of the lifting block, limiting the movement range of the lifting block to limit the movement range of the movable block.

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached figure:

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 This is a bottom view of the support of the utility model;

[0023] Figure 3 This is a top view schematic diagram of the support of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the support of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the bracket of the utility model.

[0026] In the figure: 1. Base; 11. Oil return pipe body; 2. Movable block; 21. Fixed block; 3. Support; 31. Transmission frame; 4. Connecting shaft; 41. Connecting rod; 42. Snap-fit ​​block; 43. Snap-fit ​​seat; 5. Bracket; 51. Limiting roller; 52. Spring; 53. Lifting block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0028] See also Figure 1-5, an injector oil return pipe, including a base 1, the base 1 can be a flat surface but is not limited to a flat surface; a return pipe body 11, the return pipe body 11 is arranged on the base 1; a mounting assembly, the mounting assembly is arranged between the base 1 and the return pipe body 11, the mounting assembly is used to fix the position of the return pipe body 11, the mounting assembly includes a movable block 2 and a fixed block 21, the movable block 2 is elastically connected to the base 1, the fixed block 21 is fixedly connected to the base 1, an arc hole is opened between the movable block 2 and the fixed block 21, the return pipe body 11 is fixed by the movable block 2 and the fixed block 21, the mounting assembly also includes a bracket 5, the bracket 5 is fixedly connected to the base 1, a slide groove is opened in the bracket 5, the movable block 2 is elastically connected to the bracket 5, the mounting assembly also includes a limiting roller 51 and a lifting block 53, the limiting roller 51 is fixedly connected to the bracket 5, the lifting block 53 is elastically connected to the limiting roller 51, the lifting block 53 is slidably connected to the slide groove in the bracket 5, the movable block 2 is fixedly connected to one end of the lifting block 53, and the installation assembly also includes a spring 52, which is sleeved on the limiting roller 51, one end of the spring 52 is fixedly connected to the lifting block 53, and the other end of the spring 52 is fixedly connected to the lifting block 53. The spring 52 is squeezed due to the lifting and lowering of the lifting block 53, and the extrusion produces deformation. The spring 52 pushes the lifting block 53 downward through the deformation force, and the lifting block 53 drives the movable block 2. The movable block 2 is always in close contact with the fixed block 21 due to the force of the spring 52. The oil return pipe main body 11 is located between the movable block 2 and the fixed block 21, and is matched through mechanical transmission instead of the screw fixing method to avoid the gap between the rusted threaded column and the nut being filled with rust, which makes it difficult for the disassembly tool to remove the threaded rod and the nut.

[0029] Among them, the fixed component includes a support 3, a clamping block 42 and a clamping seat 43, the support 3 is fixedly connected to the base 1, the clamping seat 43 is fixedly connected to the base 1, one end of the clamping block 42 is clamped with the clamping seat 43, and the other end of the clamping block 42 is transmission-connected to the movable block 2, the fixed component also includes a connecting rod 41, one end of the connecting rod 41 is connected to the clamping block 42 by a fastener, the fastener includes but is not limited to a bolt, the other end of the connecting rod 41 is movably connected to the support 3, the fixed component also includes a transmission frame 31 and a connecting shaft 4, one end of the transmission frame 31 is rotatably connected to the support 3, the connecting shaft 4 is rotatably connected to the transmission frame 31, the other end of the connecting rod 41 is fixedly connected to the connecting shaft 4, and the other end of the transmission frame 31 is rotationally connected to the lifting block 53, the clamping seat 43 is T-shaped as a whole, and one end of the clamping seat 43 is provided with an arc protrusion, which is manpower The clamping block 42 is pushed upward, and the clamping block 42 drives the connecting rod 41 to move, and the connecting rod 41 drives the connecting shaft 4 to move. During the movement, the connecting shaft 4 pulls the transmission frame 31 to rotate with the support 3 as the fulcrum, and the other end of the transmission frame 31 drives the lifting block 53 to move. The lifting block 53 is restricted by the bracket 5 and can only be lifted. The lifting of the lifting block 53 drives the movable block 2 to separate from the fixed block 21. At this time, manpower places the return oil pipe main body 11 between the movable block 2 and the fixed block 21, and manpower pulls the clamping block 42 to engage with the clamping seat 43. The clamping block 42 drives the lifting block 53 to move downward through the cooperation between the connecting shaft 4, the connecting rod 41 and the transmission frame 31, thereby intervening in the movement of the lifting block 53, limiting the range of movement of the lifting block 53 to limit the range of movement of the movable block 2.

[0030] Working principle: Manpower pushes the clamping block 42 upward, the clamping block 42 drives the connecting rod 41 to move, the connecting rod 41 drives the connecting shaft 4 to move, and the connecting shaft 4 pulls the transmission frame 31 to rotate with the support 3 as the fulcrum during the movement. The other end of the transmission frame 31 drives the lifting block 53 to move. The lifting block 53 is restricted by the bracket 5 and can only be lifted. The lifting of the lifting block 53 drives the movable block 2 to separate from the fixed block 21. At this time, manpower places the return oil pipe main body 11 between the movable block 2 and the fixed block 21, and manpower pulls the clamping block 42 to engage with the clamping seat 43. The clamping block 42 drives the lifting through the cooperation between the connecting shaft 4, the connecting rod 41 and the transmission frame 31. The lowering block 53 moves downward, thereby intervening in the movement of the lifting block 53, limiting the range of movement of the lifting block 53 to limit the range of movement of the movable block 2, and the spring 52 is squeezed due to the lifting and lowering of the lifting block 53, and the squeezing produces deformation. The spring 52 pushes the lifting block 53 downward through the force of the deformation, and the lifting block 53 drives the movable block 2. The movable block 2 is always in close contact with the fixed block 21 due to the force of the spring 52. The return oil pipe body 11 is located between the movable block 2 and the fixed block 21, and is matched through mechanical transmission instead of the screw fixing method, so as to avoid the gap between the rusted threaded column and the nut being filled with rust, which makes it difficult for the disassembly tool to remove the threaded rod and the nut.

[0031] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A fuel injector oil return pipe, characterized in that: include: The base (1) may be a flat surface but is not limited to a flat surface; An oil return pipe body (11), the oil return pipe body (11) is arranged on the base (1); A mounting assembly is provided between the base (1) and the oil return pipe body (11), and is used to fix the position of the oil return pipe body (11). The mounting assembly includes a movable block (2) and a fixed block (21). The movable block (2) is elastically connected to the base (1), and the fixed block (21) is fixedly connected to the base (1). An arc-shaped hole is provided between the movable block (2) and the fixed block (21), and the oil return pipe body (11) is fixed by the movable block (2) and the fixed block (21). A fixed component is provided between the base (1) and the movable block (2), and is used to limit the position of the movable block (2).

2. The fuel return pipe of the fuel injector according to claim 1, characterized in that: The mounting assembly further comprises a bracket (5), the bracket (5) is fixedly connected to the base (1), a sliding groove is provided in the bracket (5), and the movable block (2) is elastically connected to the bracket (5).

3. The fuel return pipe of the fuel injector according to claim 2, characterized in that: The mounting assembly further comprises a limiting roller (51) and a lifting block (53), the limiting roller (51) is fixedly connected to the bracket (5), the lifting block (53) is elastically connected to the limiting roller (51), the lifting block (53) is slidably connected to the inner groove of the bracket (5), and the movable block (2) is fixedly connected to one end of the lifting block (53).

4. The fuel return pipe of the fuel injector according to claim 3, characterized in that: The mounting assembly further comprises a spring (52), which is sleeved on the limiting roller (51), one end of the spring (52) is fixedly connected to the lifting block (53), and the other end of the spring (52) is fixedly connected to the lifting block (53).

5. The fuel return pipe of the fuel injector according to claim 1, characterized in that: The fixing assembly comprises a support (3), a clamping block (42) and a clamping seat (43); the support (3) is fixedly connected to the base (1); the clamping seat (43) is fixedly connected to the base (1); one end of the clamping block (42) is clamped to the clamping seat (43); and the other end of the clamping block (42) is transmission-connected to the movable block (2).

6. The fuel return pipe of the fuel injector according to claim 5, characterized in that: The fixing assembly further comprises a connecting rod (41), one end of the connecting rod (41) is connected to the clamping block (42) via a fastener, and the other end of the connecting rod (41) is movably connected to the support (3).

7. The fuel return pipe of the fuel injector according to claim 6, characterized in that: The fixing assembly further comprises a transmission frame (31) and a connecting shaft (4); one end of the transmission frame (31) is rotatably connected to the support (3); the connecting shaft (4) is rotatably connected to the transmission frame (31); and the other end of the connecting rod (41) is fixedly connected to the connecting shaft (4).

8. The fuel return pipe of the fuel injector according to claim 7, characterized in that: The other end of the transmission frame (31) is rotatably connected to the lifting block (53); the clamping seat (43) is T-shaped as a whole; one end of the clamping seat (43) is provided with an arc-shaped protrusion.

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