Anti-fracture oil nozzle matching part

Abstract

The utility model provides an anti-fracture oil nozzle matching part, which relates to the technical field of oil nozzle matching parts and comprises an oil nozzle matching part main body, a mounting groove is arranged in the oil nozzle matching part main body, and a needle valve main body is arranged in the mounting groove. Sliding grooves are symmetrically formed in the positions, close to the bottom and corresponding to the needle valve body, of the inner side wall of the mounting groove, telescopic rods are mounted on the inner bottom faces of the sliding grooves, the peripheries of the telescopic rods are sleeved with buffer springs, and first buffer pads are mounted at the top ends of the telescopic rods; a sliding block is fixed to the position, corresponding to the sliding groove, of the outer side wall of the needle valve body main body, a buffering groove is formed in the position, close to the top end, of the inner side wall of the mounting groove, and compared with an existing fuel injection nozzle matching part, collision between the needle valve body and the fuel injection nozzle matching part can be effectively prevented during working, the probability of breakage of the needle valve body can be greatly reduced, and the service life of the fuel injection nozzle matching part is prolonged. Therefore, the service life of the oil nozzle matching part can be obviously prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection nozzle pairs, in particular to a fracture-resistant fuel injection nozzle pair. Background Art

[0002] The nozzle assembly is a key component in the injector, usually consisting of a needle valve and a needle valve body. It is a pair of precision parts with a very small fitting clearance of only 0.002 to 0.004 mm. Therefore, after fine machining, the pairing grinding is required to ensure its accuracy, which makes them non-interchangeable during use.

[0003] When the existing fuel injector pair is used for a long time, its needle valve body will easily collide when moving against each other, and the needle valve body may break, thereby affecting the service life of the fuel injector pair and the normal operation of the equipment. Therefore, we propose an anti-breakage fuel injector pair. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art. When the existing fuel injector pair is used for a long time, the needle valve body of the existing fuel injector pair is prone to collision when moving against each other, and the needle valve body may break, thereby affecting the service life of the fuel injector pair and thus affecting the normal operation of the equipment.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fracture-proof fuel injector pair comprises a fuel injector pair main body, a mounting groove is provided inside the fuel injector pair main body, a needle valve body main body is installed inside the mounting groove, a sliding groove is symmetrically provided on the inner side wall of the mounting groove near the bottom and corresponding to the needle valve body main body, a telescopic rod is installed on the inner bottom surface of the sliding groove, a buffer spring is provided on the outer periphery of the telescopic rod, a first buffer pad is installed on the top end of the telescopic rod, a slider is fixed on the outer side wall of the needle valve body main body corresponding to the sliding groove, a buffer groove is provided on the inner side wall of the mounting groove near the top end, and a second buffer pad is provided on the outer side wall of the needle valve body main body and corresponding to the buffer groove.

[0007] As a preferred solution of the present invention, the mounting groove is adapted to the main body of the needle valve body.

[0008] The technical effect of adopting the above further solution is that the installation groove is adapted to the needle valve body, making it more convenient for workers to install the needle valve body.

[0009] As a preferred solution of the present invention, an oil inlet hole is provided at the top of the main body of the fuel injector assembly, and an oil outlet hole is provided on the inner side wall of the mounting groove near the bottom.

[0010] The technical effect of adopting the above further solution is that the design of the oil inlet and outlet holes can enable the main body of the fuel injector assembly to work better.

[0011] As a preferred solution of the present invention, an oil pipeline is provided between the oil inlet and the oil outlet and inside the main body of the fuel injector assembly, and an oil injection hole is provided at the bottom of the main body of the fuel injector assembly.

[0012] The technical effect of adopting the above further solution is that the gasoline can be better delivered to the injection hole for injection through the design of the oil pipeline.

[0013] As a preferred solution of the present invention, the slider is adapted to the slide groove, and the slider is slidably connected to the slide groove.

[0014] The technical effect of adopting the above further solution is that the needle valve body can be more stable and convenient when displacing by adapting the slider to the slide groove and slidingly connecting the slider to the slide groove.

[0015] As a preferred solution of the present invention, an oil pushing plate is fixed to the bottom of the needle valve body, and the oil pushing plate is adapted to the mounting groove.

[0016] The technical effect of adopting the above further solution is that the design of the oil push plate can help gasoline to be sprayed out from the oil injection hole faster.

[0017] As a preferred solution of the present invention, the bottom of the telescopic rod is fixedly connected to the inner bottom surface of the sliding groove, and the buffer spring is made of spring steel.

[0018] The technical effect of adopting the above-mentioned further scheme is: by fixing the bottom of the telescopic rod to the inner bottom surface of the slide groove and the buffer spring being made of spring steel, the telescopic rod can be well fixed, thereby ensuring that when the slider descends, the telescopic rod and the buffer spring can unload the force of the slider, thereby reducing the probability of collision between the needle valve body and the injector assembly body.

[0019] As a preferred solution of the present invention, the first buffer pad and the second buffer pad are both made of rubber material, and the second buffer pad is adapted to the buffer groove.

[0020] The technical effect of adopting the above further solution is that the first buffer pad and the second buffer pad made of rubber material can play a good buffering role when the needle valve body descends.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] In the utility model, through the design of the slide groove, telescopic rod, buffer spring, first buffer pad and buffer groove, when an anti-fracture fuel injector pair is working, it can effectively prevent the needle valve body and the fuel injector pair from colliding, which can greatly reduce the probability of the needle valve body breaking, thereby significantly improving the service life of the fuel injector pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an anti-fracture fuel injection nozzle pair provided by the utility model;

[0024] Figure 2 This is a side anatomical diagram of the overall structure of an anti-fracture fuel injection nozzle assembly provided by the utility model;

[0025] Figure 3 This is a back anatomical diagram of the overall structure of an anti-fracture fuel injection nozzle pair provided by the utility model;

[0026] Figure 4 This is an enlarged schematic diagram of structure A of an anti-fracture fuel injection nozzle pair provided by the utility model.

[0027] Legend: 1. Injector nozzle assembly body; 101. Mounting groove; 102. Oil inlet hole; 103. Oil outlet hole; 104. Oil pipeline; 105. Injection hole; 2. Needle valve body; 201. Slider; 202. Second buffer pad; 203. Oil push plate; 3. Slide; 301. Telescopic rod; 302. Buffer spring; 303. First buffer pad; 4. Buffer groove. DETAILED DESCRIPTION

[0028] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Example 1

[0033] like Figure 1-4 As shown, the utility model provides a technical solution: an anti-fracture fuel injection nozzle pair, including a fuel injection nozzle pair body 1, a mounting groove 101 is opened inside the fuel injection nozzle pair body 1, the mounting groove 101 is used to install the needle valve body 2, the mounting groove 101 is installed inside the needle valve body 2, the inner wall of the mounting groove 101 is symmetrically opened with a slide groove 3 near the bottom and corresponding to the needle valve body 2, the slider 201 can slide inside the slide groove 3, the inner bottom surface of the slide groove 3 is installed with a telescopic rod 301, the telescopic rod A buffer spring 302 is provided on the outer sleeve of 301. The telescopic rod 301 and the buffer spring 302 can buffer the downward force. A first buffer pad 303 is installed on the top of the telescopic rod 301. A slider 201 is fixed on the outer wall of the needle valve body 2 corresponding to the slide groove 3. A buffer groove 4 is opened on the inner wall of the installation groove 101 near the top. A second buffer pad 202 is provided on the outer wall of the needle valve body 2 and corresponding to the buffer groove 4. The second buffer pad 202 can perform displacement buffering inside the buffer groove 4.

[0034] Example 2

[0035] like Figure 1-4 As shown, the mounting groove 101 is adapted to the needle valve body 2 . By adapting the mounting groove 101 to the needle valve body 2 , it is more convenient for workers to install the needle valve body 2 .

[0036] An oil inlet hole 102 is provided at the top of the nozzle assembly body 1, and an oil outlet hole 103 is provided on the inner wall of the mounting groove 101 near the bottom. The design of the oil inlet hole 102 and the oil outlet hole 103 allows the nozzle assembly body 1 to work better.

[0037] An oil pipeline 104 is provided between the oil inlet hole 102 and the oil outlet hole 103 and inside the fuel injector assembly body 1. An oil injection hole 105 is provided at the bottom of the fuel injector assembly body 1. The design of the oil pipeline 104 can better deliver gasoline to the fuel injection hole 105 for spraying.

[0038] The slider 201 is adapted to the slide groove 3, and the slider 201 is slidably connected to the slide groove 3. By adapting the slider 201 to the slide groove 3 and slidingly connecting the slider 201 to the slide groove 3, the needle valve body 2 can be more stable and convenient when displacing.

[0039] An oil pushing plate 203 is fixed to the bottom of the needle valve body 2. The oil pushing plate 203 is adapted to the mounting groove 101. The design of the oil pushing plate 203 can help gasoline to be sprayed out from the injection hole 105 faster.

[0040] The bottom of the telescopic rod 301 is fixedly connected to the inner bottom surface of the slide groove 3, and the buffer spring 302 is made of spring steel. Since the bottom of the telescopic rod 301 is fixedly connected to the inner bottom surface of the slide groove 3 and the buffer spring 302 is made of spring steel, the telescopic rod 301 can be well fixed, thereby ensuring that when the slider 201 descends, the telescopic rod 301 and the buffer spring 302 can unload the force on the slider 201, thereby reducing the probability of collision between the needle valve body main body 2 and the injector nozzle main body 1.

[0041] The first buffer pad 303 and the second buffer pad 202 are both made of rubber material. The second buffer pad 202 is adapted to the buffer groove 4. The first buffer pad 303 and the second buffer pad 202 made of rubber material can play a good buffering role when the needle valve body 2 descends.

[0042] The working process of the utility model is as follows: when an anti-fracture fuel injection nozzle pair is working, the needle valve body 2 will first rise and fall in frequency. When the needle valve body 2 falls, the slider 201 will fall together with the needle valve body 2 in the inside of the slide groove 3 until the slider 201 contacts the first buffer pad 303. At this time, the first buffer pad 303, the telescopic rod 301 and the buffer spring 302 can effectively buffer the force of the slider 201 falling, so that the speed of the needle valve body 2 falling is effectively reduced, thereby preventing the needle valve body 2 from falling. There is no collision between the needle valve body and the fuel injector pair 1, and the second buffer pad 202 can also perform displacement buffering inside the buffer groove 4. When the needle valve body 2 rises, the telescopic rod 301 and the buffer spring 302 can also apply force to the needle valve body 2, so that the needle valve body 2 can be more convenient when rising. Compared with the existing fuel injector pair, it can effectively prevent the needle valve body and the fuel injector pair from colliding during work, and can greatly reduce the probability of the needle valve body breaking, thereby significantly improving the service life of the fuel injector pair.

[0043] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fracture-resistant fuel injection nozzle assembly, comprising a fuel injection nozzle assembly body (1), characterized in that: The fuel injector pair body (1) is provided with a mounting groove (101) inside, a needle valve body (2) is installed inside the mounting groove (101), a sliding groove (3) is symmetrically provided on the inner wall of the mounting groove (101) near the bottom and corresponding to the needle valve body (2), a telescopic rod (301) is installed on the inner bottom surface of the sliding groove (3), a buffer spring (302) is sleeved on the outer periphery of the telescopic rod (301), a first buffer pad (303) is installed on the top end of the telescopic rod (301), a slider (201) is fixed on the outer wall of the needle valve body (2) at a position corresponding to the sliding groove (3), a buffer groove (4) is provided on the inner wall of the mounting groove (101) near the top end, and a second buffer pad (202) is sleeved on the outer wall of the needle valve body (2) at a position corresponding to the buffer groove (4).

2. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: The mounting groove (101) is adapted to the needle valve body (2).

3. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: An oil inlet hole (102) is provided at the top of the fuel injection nozzle assembly body (1), and an oil outlet hole (103) is provided on the inner side wall of the mounting groove (101) near the bottom.

4. The anti-fracture fuel injection nozzle assembly according to claim 3, characterized in that: An oil delivery pipeline (104) is provided between the oil inlet hole (102) and the oil outlet hole (103) and inside the fuel injector assembly body (1), and a fuel injection hole (105) is provided at the bottom of the fuel injector assembly body (1).

5. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: The slider (201) is adapted to the slide groove (3), and the slider (201) is slidably connected to the slide groove (3).

6. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: An oil pushing plate (203) is fixed to the bottom of the needle valve body (2), and the oil pushing plate (203) is adapted to the mounting groove (101).

7. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: The bottom of the telescopic rod (301) is fixedly connected to the inner bottom surface of the slide groove (3), and the buffer spring (302) is made of spring steel.

8. The anti-fracture fuel injection nozzle assembly according to claim 1, characterized in that: The first buffer pad (303) and the second buffer pad (202) are both made of rubber material, and the second buffer pad (202) is adapted to the buffer groove (4).

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