CN213479119U - Mounting structure of engine chain limiting frame - Google Patents

Abstract

The utility model provides a mounting structure of spacing of engine chain belongs to engine technical field. It has solved the current poor problem of spacing installation stability. This engine includes the crankcase and sets up the bent axle in the crankcase, mounting structure includes the bolt, elastic component and the spacer pin of wearing to establish in the crankcase, spacing frame links firmly in the crankcase through the bolt, mounting structure still includes that the one end of elastic component compresses tightly on the spacer pin and makes the partial embedding of spacer pin in the bent axle, the other end of elastic component supports and leans on spacing frame, the head of elastic component and bolt is located the both sides of spacing frame respectively, the direction of elastic component elasticity, the length direction of bolt all sets up along the axial of bent axle. This spacing mounting structure has the advantage that prevents that the bolt is not hard up when making bent axle axial positioning.

Description

Mounting structure of engine chain limiting frame

Technical Field

The utility model belongs to the technical field of the engine, a mounting structure of spacing frame of engine chain is related to.

Background

The existing timing system of the automobile usually drives the valve train of the engine through a timing chain, namely a chain drive in general. The chain transmission has the remarkable advantages of compact structure, high transmission power, high reliability and wear resistance, various design types, less maintenance, long service life and the like. However, when the timing chain is loosened by chain transmission, the crankshaft end of the timing chain can fall down due to the action of gravity, so that the chain at the crankshaft end is easy to run out of teeth, and timing errors are caused.

Various improvements have been made to solve the above problems, and patents have been filed, for example, chinese patent literature discloses an engine timing chain derailment prevention device [ patent no: 201120480014. X; authorization notice number: CN202391505U ], the device includes a limiting block disposed below the timing chain and capable of limiting the downward movement of the timing chain, and the limiting block is fixed on the main bearing cap of the engine.

According to the anti-chain-dropping device with the structure, the limiting block is fixed on the main bearing cover of the engine through the bolt, vehicles such as automobiles and motorcycles have the problem of bumping in the driving process, the bolt can be loosened due to long-time and long-term bumping, the limiting block rotates or drops once the bolt is loosened, the rotating or dropping limiting block can abut against the chain, the chain cannot normally rotate, and the automobiles and the motorcycles break down. Meanwhile, when the automobile and the motorcycle run, the crankshaft has axial movement, abnormal abrasion between the crankshaft and a bearing, between the piston and the cylinder is accelerated, and the service life is shortened.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide an engine chain spacing mounting structure, the technical problem of solution prevents that the bolt is not hard up when realizing bent axle axial positioning.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a mounting structure of spacing of engine chain, engine include the crankcase and set up the bent axle in the crankcase, and mounting structure includes the bolt, spacing is linked firmly in the crankcase through the bolt, its characterized in that, mounting structure still include the elastic component and wear to establish the spacer pin in the crankcase, the one end of elastic component compresses tightly makes the part embedding of spacer pin on the spacer pin in the bent axle, the other end of elastic component supports and leans on spacing, the head of elastic component and bolt is located the both sides of spacing respectively, the axial setting of bent axle is all followed to the direction of elastic component elasticity, the length direction of bolt.

The limiting frame can limit the crankshaft end of the timing chain to move downwards, and the chain is prevented from falling off. The bolt is fixedly connected with the limiting frame, the threads of the bolt are spaced, a small gap exists between the bolt and the crankcase after the bolt and the crankcase are fixed, the bolt and the crankcase can relatively move in a small mode in the axial direction, and the small movement causes the risk that the bolt falls off under the long-term bumping effect. Under the effect of elastic component elasticity, the spacer pin embedding is in the bent axle, make the bent axle axial compress tightly, prevent bent axle axial float, simultaneously under the effect of elastic component elasticity, the elastic component provides spacing reverse effort, because the head of elastic component and bolt is located the both sides of spacing respectively, spacing can transmit the head of bolt for this effort, make the bolt carry out tiny removal under the effect of this power to the axial, in order to eliminate the tiny clearance that exists between bolt and the crankcase, solve the not hard up problem of bolt, make spacing can be better link firmly mutually with the crankcase, thereby improve spacing stability, prevent that the problem that rotation and drove from appearing in spacing. Through setting up spacer pin and elastic component, realize that the bent axle axial compresses tightly and prevents bent axle axial float, has solved the not hard up problem of bolt again simultaneously, improves the stability of spacing, has dual effect, compact structure.

In foretell mounting structure of spacing frame of engine chain, the installation piece that the arch set up has in the crankcase, have the spacing hole that is used for supplying the fixed orifices that the bolt wore to establish and links firmly and runs through and is used for installing the spacer pin in the installation piece, spacing hole and the adjacent setting of fixed orifices, spacing frame passes through the bolt and closely laminates the setting with the installation piece. The setting of installation piece provides the mounted position, and spacing and the setting of closely laminating of installation piece improve the stability of spacing, and spacing hole in the installation piece provides the removal route of spacer pin and prevents that spacer pin and elastic component from droing simultaneously.

In the mounting structure of the engine chain limiting frame, the outer side wall of the limiting pin is attached to the inner side wall of the limiting hole, the end part of the mounting block, which is attached to the limiting frame, is provided with a plurality of ventilation grooves which are arranged in a concave manner, and the ventilation grooves enable the limiting hole to be communicated with the outside. The outer side wall of the limiting pin is attached to the inner side wall of the limiting hole, so that the stability and the moving precision of the limiting pin are improved; the setting of ventilative groove plays the effect of ventilating, makes spacing downthehole atmospheric pressure the same with external atmospheric pressure, prevents that the spacer pin that spacing downthehole atmospheric pressure leads to unusually from removing unusually, improves stability.

In the mounting structure of the engine chain limiting frame, the crankcase is further provided with a positioning pin which is arranged in a protruding mode, the positioning pin is arranged adjacent to the mounting block and fixedly connected with the mounting block through a first connecting rib, the limiting frame is provided with a positioning hole, and the positioning pin is partially embedded into the positioning hole. The arrangement of the positioning pin and the positioning hole further improves the stability of the limiting frame, so that the limiting frame has no problems of rotation and the like; the setting of first splice bar makes locating pin and mounting bracket fuse, improves the intensity of locating pin and mounting bracket to improve spacing firm degree of installation, improve spacing stability, prevent that the problem that rotation and droing from appearing in spacing.

In the mounting structure of the engine chain limiting frame, the crankcase is provided with a mounting ring which is arranged in a protruding mode, the mounting block is located on the inner side of the mounting ring, and the mounting block is fixedly connected with the mounting ring through the second connecting rib. The firm degree of mounting bracket is further improved in setting up of second connecting rib to improve spacing stability, prevent that the problem that rotation and droing from appearing in spacing.

In the mounting structure of the engine chain limiting frame, the crankcase, the mounting block, the positioning pin, the first connecting rib, the mounting ring and the second connecting rib are of an integrated structure. The integral type structure, firm degree is good, and stability is high, and manufacturing is convenient simultaneously, reduce cost.

In foretell mounting structure of engine chain spacing, spacing is including being curved limiting plate and being the flat fixed plate, limiting plate and fixed plate formula structure as an organic whole, the limiting plate is mutually perpendicular just with the fixed plate the junction smooth transition of limiting plate and fixed plate, the elastic component is used in on the fixed plate. The structure ensures that the limiting frame has high firmness and good stability.

In the above-mentioned mounting structure of engine chain spacing, the limiting plate is located the one end of fixed plate, just the lightening hole has still been seted up to this end of fixed plate, the other end of fixed plate has the support portion that supplies the elastic component of protrusion setting to support and lean on, support portion and limiting plate lie in the same one side of fixed plate, the bolt is worn to establish the centre department of fixed plate and the bolt is located and supports between portion and the lightening hole. This kind of structure makes the weight of the spacing frame in bolt both sides balanced, further improves the installation stability of spacing frame, prevents that the problem that rotation and drop from appearing in spacing frame.

In foretell mounting structure of engine chain spacing, support to have the breach of stepping down of recessed setting between portion and the limiting plate, the bottom of the breach of stepping down extends to the junction of limiting plate and fixed plate. The limiting frame is convenient to process, and the problem of fracture and the like do not exist at the joint.

In the mounting structure of the engine chain limiting frame, the outer side wall of the abutting part is arc-shaped. Rational utilization space prevents to support to take place to touch with the external world by the portion, for the spare part that has the edges and corners simultaneously, is difficult for cutting the user.

In the mounting structure of the engine chain limiting frame, the elastic element is a cylindrical spring or a conical spring, the limiting pin is provided with a concave limiting blind hole, one end of the elastic element is positioned in the limiting blind hole and acts on the limiting pin, and the other end of the elastic element acts on the limiting frame. Spacing blind hole plays the effect spacing to the elastic component, prevents the skew direction of setting for of elastic component, makes the elastic component provide elasticity according to the direction of setting for simultaneously, realizes that bent axle axial compresses tightly and prevents bent axle axial float and solves the not hard up dual effect that improves spacing stability of bolt.

Compared with the prior art, the utility model provides a pair of mounting structure of spacing frame of engine chain has following advantage:

1. this spacing can restrict timing chain crankshaft end and move down, prevents that the chain from droing, makes chain simple to operate simultaneously.

2. This mounting structure of spacing frame of chain realizes that the bent axle axial compresses tightly and prevents bent axle axial float through setting up spacer pin and elastic component, solves the not hard up stability that improves spacing frame of bolt simultaneously, has dual effect, compact structure.

3. The weight balance that this spacing was located the bolt both sides improves spacing's installation stability, prevents that the problem that rotation and drop from appearing in spacing.

Drawings

Fig. 1 is a schematic view of the overall structure of the mounting structure of the engine chain limiting frame.

Fig. 2 is a front view of the overall structure of the mounting structure of the engine chain stopper.

Fig. 3 is an overall structural sectional view of the mounting structure of the engine chain stopper.

Fig. 4 is an overall structure schematic diagram of the mounting frame of the mounting structure of the engine chain limiting frame.

In the figure, 1, crankcase; 11. a mounting ring; 2. a crankshaft; 3. a bolt; 31. a head portion; 4. a limiting frame; 41. positioning holes; 42. a limiting plate; 43. a fixing plate; 44. lightening holes; 45. an abutting portion; 46. a abdication gap; 5. a spacing pin; 51. a limiting blind hole; 6. An elastic member; 7. mounting blocks; 71. a limiting hole; 72. a fixing hole; 73. a ventilation groove; 8. Positioning pins; 9. a first connecting rib; 10. a second connecting rib; 12. and a chain.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, and 3, the engine includes a crankcase 1 and a crankshaft 2, and the mount structure of the mount includes a bolt 3, a limit pin 5, an elastic member 6, a mount block 7, and a positioning pin 8.

As shown in fig. 4, the crankcase 1 has a mounting block 7 provided with a protrusion, the mounting block 7 has a limiting hole 71 and a fixing hole 72, the limiting hole 71 and the fixing hole 72 are provided adjacently, the limiting hole 71 is penetrated, and the fixing hole 72 is a blind hole. Still have the locating pin 8 of protrusion setting on the crankcase 1, locating pin 8 sets up with installation piece 7 is adjacent, and locating pin 8 links firmly with installation piece 7 mutually through first connecting rib 9, has the collar 11 of protrusion setting in the crankcase 1, and installation piece 7 is located the inboard of collar 11, and installation piece 7 links firmly with collar 11 mutually through second connecting rib 10. The crankcase 1, the mounting block 7, the positioning pin 8, the first connecting rib 9, the mounting ring 11 and the second connecting rib 10 are of an integrated structure.

The limit pin 5 is inserted into the limit hole 71, and the outer side wall of the limit pin 5 is attached to the inner side wall of the limit hole 71, in this embodiment, the elastic member 6 is a cylindrical spring, and in actual production, the elastic member 6 is a conical spring. The limiting pin 5 is provided with a concave limiting blind hole 51, one end of the elastic element 6 is positioned in the limiting blind hole 51 and acts on the limiting pin 5, and the other end of the elastic element 6 acts on the limiting frame 4.

The limiting frame 4 is closely attached to the mounting block 7 through the bolt 3, in this embodiment, the end of the mounting block 7, which is attached to the limiting frame 4, is provided with two air permeable grooves 73 which are concavely arranged, the air permeable grooves 73 enable the limiting hole 71 to be communicated with the outside, and in actual production, the number of the air permeable grooves 73 can be one or three.

The limiting frame 4 comprises an arc limiting plate 42 and a flat fixing plate 43, the limiting plate 42 and the fixing plate 43 are of an integral structure, the limiting plate 42 is perpendicular to the fixing plate 43, the junction of the limiting plate 42 and the fixing plate 43 is in smooth transition, the limiting plate 42 is located at one end of the fixing plate 43, a lightening hole 44 is further formed in the end of the fixing plate 43, the other end of the fixing plate 43 is provided with a protruding abutting part 45 for abutting against the elastic piece 6, the outer side wall of the abutting part 45 is arc-shaped, the abutting part 45 and the limiting plate 42 are located on the same side of the fixing plate 43, a concave abdicating notch 46 is formed between the abutting part 45 and the limiting plate 42, the bottom of the abdicating notch 46 extends to the junction of the limiting plate 42 and the fixing plate 43, the bolt 3 penetrates through the middle of the fixing plate 43, the bolt 3 is located between the abutting, the positioning pin 8 is partially inserted into the positioning hole 41.

During the equipment, imbed spacing pin 5 in spacing hole 71, then insert elastic component 6 in spacing blind hole 51, remove spacing 4, make locating pin 8 imbed in locating hole 41, elastic component 6 supports and leans on spacing 4 this moment, and spacing pin 5 part is embedded in bent axle 2, then penetrate bolt 3 and screw up can, can eliminate the clearance between bolt 3 and the installation piece 7 under the effect of elastic component 6.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the crankcase 1, the mounting ring 11, the crankshaft 2, the bolt 3, the head 31, the limiting frame 4, the positioning hole 41, the limiting plate 42, the fixing plate 43, the lightening hole 44, the abutting portion 45, the relief notch 46, the limiting pin 5, the limiting blind hole 51, the elastic member 6, the mounting block 7, the limiting hole 71, the fixing hole 72, the ventilation groove 73, the positioning pin 8, the first connecting rib 9, the second connecting rib 10, the chain 12, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. An engine chain limiting frame mounting structure, an engine comprises a crankcase (1) and a crankshaft (2) arranged in the crankcase (1), the mounting structure comprises a bolt (3), the limiting frame (4) is fixedly connected in the crankcase (1) through a bolt (3), it is characterized in that the mounting structure also comprises an elastic piece (6) and a limit pin (5) which is arranged in the crankcase (1) in a penetrating way, one end of the elastic piece (6) is pressed on the limit pin (5) to enable the limit pin (5) to be partially embedded in the crankshaft (2), the other end of the elastic piece (6) is abutted against the limiting frame (4), the elastic piece (6) and the head (31) of the bolt (3) are respectively positioned at two sides of the limiting frame (4), the direction of the elastic force of the elastic piece (6) and the length direction of the bolt (3) are arranged along the axial direction of the crankshaft (2).

2. The mounting structure of the engine chain limiting frame according to claim 1, wherein a mounting block (7) with a protrusion is arranged in the crankcase (1), a fixing hole (72) for the bolt (3) to penetrate and be fixedly connected and a limiting hole (71) for the limiting pin (5) to penetrate are arranged in the mounting block (7), the limiting hole (71) and the fixing hole (72) are arranged adjacently, and the limiting frame (4) is tightly attached to the mounting block (7) through the bolt (3).

3. The mounting structure of the engine chain limiting frame according to claim 2, wherein the outer side wall of the limiting pin (5) is attached to the inner side wall of the limiting hole (71), the end of the mounting block (7) attached to the limiting frame (4) is provided with a plurality of air-permeable grooves (73) which are arranged in a recessed manner, and the air-permeable grooves (73) enable the limiting hole (71) to be communicated with the outside.

4. The mounting structure of the engine chain limiting frame according to claim 2 or 3, wherein the crankcase (1) is further provided with a protruding positioning pin (8), the positioning pin (8) is arranged adjacent to the mounting block (7), the positioning pin (8) is fixedly connected with the mounting block (7) through a first connecting rib (9), the limiting frame (4) is provided with a positioning hole (41), and the positioning pin (8) is partially embedded in the positioning hole (41).

5. The mounting structure of the engine chain limiting frame according to claim 4, wherein the crankcase (1) is provided with a protruding mounting ring (11), the mounting block (7) is located on the inner side of the mounting ring (11), and the mounting block (7) is fixedly connected with the mounting ring (11) through a second connecting rib (10).

6. The mounting structure of the engine chain limiting frame according to claim 5, wherein the crankcase (1), the mounting block (7), the positioning pin (8), the first connecting rib (9), the mounting ring (11) and the second connecting rib (10) are of an integrated structure.

7. The mounting structure of the engine chain limiting frame according to claim 1, 2 or 3, wherein the limiting frame (4) comprises an arc limiting plate (42) and a flat fixing plate (43), the limiting plate (42) and the fixing plate (43) are of an integrated structure, the limiting plate (42) is perpendicular to the fixing plate (43), the connection between the limiting plate (42) and the fixing plate (43) is in smooth transition, and the elastic member (6) acts on the fixing plate (43).

8. The mounting structure of the engine chain limiting frame according to claim 7, wherein the limiting plate (42) is located at one end of a fixing plate (43), a lightening hole (44) is further formed at the end of the fixing plate (43), an abutting portion (45) which is convexly arranged and is abutted by the elastic piece (6) is arranged at the other end of the fixing plate (43), the abutting portion (45) and the limiting plate (42) are located on the same side of the fixing plate (43), the bolt (3) penetrates through the middle of the fixing plate (43), and the bolt (3) is located between the abutting portion (45) and the lightening hole (44).

9. The mounting structure of the engine chain limiting frame according to claim 8, wherein a recessed abdicating notch (46) is arranged between the abutting part (45) and the limiting plate (42), and the bottom of the abdicating notch (46) extends to the joint of the limiting plate (42) and the fixing plate (43).

10. The mounting structure of the engine chain spacing frame according to claim 1, 2 or 3, wherein the elastic member (6) is a cylindrical spring or a conical spring, the spacing pin (5) has a spacing blind hole (51) arranged in a concave manner, one end of the elastic member (6) is positioned in the spacing blind hole (51) and acts on the spacing pin (5), and the other end of the elastic member (6) acts on the spacing frame (4).

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