CN218468181U

CN218468181U - Guide pillar inner core for tensioner

Info

Publication number: CN218468181U
Application number: CN202222883395.7U
Authority: CN
Inventors: 石建峰
Original assignee: Sichuan Ouyiguan Machinery Co ltd
Current assignee: Sichuan Ouyiguan Machinery Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-10
Anticipated expiration: 2032-10-31

Abstract

The utility model belongs to the technical field of the tight ware that rises, concretely relates to a guide pillar inner core for rising tight ware, including the inner core body, the inner core body is from last to including integrated into one piece's head of a column section, linkage segment, spacing section and installation cavity section down, spacing section external diameter is less than linkage segment and installation cavity section external diameter, the linkage segment length is greater than installation cavity section length, it has first cavity and second cavity to open down to follow in the installation cavity section, and first cavity cross section is less than the second cavity.

Description

Guide pillar inner core for tensioner

Technical Field

The utility model belongs to the technical field of the tight ware that rises, concretely relates to a guide pillar inner core for rising tight ware that rises.

Background

Because the timing chain can jump when running at medium and high speed, the problems of elongation, deformation and the like can occur to cause vehicle faults due to the material and stress of the timing chain in long-term use. In order to keep the timing chain at a proper tension degree, the tensioner acts on the timing chain of the engine to play a role in guiding and tensioning the timing chain, so that the timing chain is always in an optimal tensioning state.

In the traditional oil pressure tensioner, engine oil generated by operating an engine is injected into the tensioner, a piston inside the tensioner is ejected out through oil pressure, and pressure is applied to a timing chain through the piston, so that tensioning is guaranteed; if the piston that disappears of oil pressure is buffered through structures such as springs, and the piston is filled with the springs, the stability of the structure of the piston is insufficient, the strength is insufficient, and the situation such as deviation is easy to occur.

SUMMERY OF THE UTILITY MODEL

Based on the problem mentioned in the above-mentioned background art, the utility model provides a guide pillar inner core for rising and tightly stretching device.

The utility model adopts the technical scheme as follows: the utility model provides a guide pillar inner core for rising device, includes the inner core body, the inner core body is from last to including integrated into one piece's column head section, linkage segment, spacing section and installation chamber section down, spacing section external diameter is less than linkage segment and installation chamber section external diameter, the linkage segment length is greater than installation chamber section length, it has first cavity and second cavity to open from last to having in the installation chamber section, and first cavity cross section is less than the second cavity.

Furthermore, an arc-shaped inclined plane is formed at the joint of the column head section and the connecting section, and the outer diameter of the column head section 2 is smaller than that of the connecting section 3.

Further, the outer diameter of the connecting section is equal to the outer diameter of the mounting cavity section.

Furthermore, an inner core shell is sleeved outside the installation cavity section, a spring is arranged in the inner core shell, and two ends of the spring are respectively connected with the second cavity and the bottom of the inner core shell.

Further, the installation cavity section is tightly attached to the inner core shell.

Further, the length of the stud section is smaller than the length of the installation cavity section.

The utility model has the advantages that:

1. the outer diameter of the limiting section is smaller than the outer diameters of the connecting section and the mounting cavity section, the limiting section is equivalent to a circle of groove formed in the inner core body and belongs to a limiting part, and a position is determined; wherein column head section, linkage segment and spacing section are solid construction, and the linkage segment length is greater than the installation cavity segment length, because the solid part is longer, ensures overall structure intensity, and stability is better. The mounting cavity section is provided with two cavities, and the springs are connected through the arrangement of the second cavity. Compared with the prior art, the solid part is longer, the strength of the integral structure is more stable, and meanwhile, the spring is arranged through the second cavity to provide elastic force, so that the integral structure is not realized by oil pressure, and is more stable.

2. An arc-shaped inclined plane is formed at the joint of the column head section and the connecting section, and the design of the arc-shaped inclined plane ensures that when the normal chain is tensioned, the force has smooth transition, and the damage caused by overlarge stress as an acute angle or a right angle cannot occur.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a three-dimensional sectional view of the inner core body of the utility model;

FIG. 2 is a schematic view of the inner core body and the inner core shell of the present invention;

fig. 3 is a schematic view of the tensioner housing of the present invention;

the drawings are labeled as follows:

the tension device comprises an inner core body 1, a spring 11, a column head section 2, a connecting section 3, a limiting section 4, an installation cavity section 5, a first cavity 51, a second cavity 52, an inner core shell 6, a conical cambered surface 61, an oil hole 62, a tensioner shell 7, an oil injection cavity 71, a second ratchet 72, a ratchet 8 and a first ratchet 81.

Detailed Description

As shown in fig. 1 to 3, the guide pillar inner core for the tensioner comprises an inner core body 1, the inner core body 1 comprises a pillar head section 2, a connecting section 3, a limiting section 4 and an installation cavity section 5 which are integrally formed from top to bottom, the outer diameter of the limiting section 4 is smaller than the outer diameters of the connecting section 3 and the installation cavity section 5, the length of the connecting section 3 is larger than the length of the installation cavity section 5, a first cavity 51 and a second cavity 52 are formed in the installation cavity section 5 from top to bottom, and the cross section of the first cavity 51 is smaller than the cross section of the second cavity 52.

By adopting the technical scheme, the outer diameter of the limiting section 4 is smaller than the outer diameters of the connecting section 3 and the mounting cavity section 5, the limiting section 4 is equivalent to a circle of groove formed in the inner core body 1 and belongs to a limiting part, and the position is determined; wherein column head section 2, linkage segment 3 and spacing section 4 are solid construction, and 3 length in linkage segment is greater than 5 length in installation chamber section, because the solid part is longer, ensure overall structure intensity, stability is better. The mounting chamber section 5 is provided with two cavities, and the second cavity 52 is arranged to be connected with the spring 11. Compared with the prior art, the solid part is longer, the strength of the whole structure is more stable, and meanwhile, the spring 11 is arranged through the second cavity 52 to provide elastic force, so that the whole structure is not realized by oil pressure alone and is more stable.

Preferably, an arc-shaped inclined plane is formed at the joint of the head section 2 and the connecting section 3, and the outer diameter of the head section 2 is smaller than that of the connecting section 3. The design of the arc-shaped inclined surface ensures that when the chain is tensioned during alignment, the force is smooth and excessive, and the chain cannot be damaged due to overlarge stress caused by an acute angle or a right angle.

Preferably, the outer diameter of the connecting section 3 is equal to the outer diameter of the mounting cavity section 5. The outer diameter of the connecting section 3 is equal to that of the mounting cavity, so that the whole structure is more compact, and the structural strength is high.

Preferably, an inner core shell 6 is sleeved outside the installation cavity section 5, a spring 11 is arranged in the inner core shell 6, and two ends of the spring 11 are respectively connected with the second cavity 52 and the bottom of the inner core shell 6.

Preferably, the installation cavity section 5 is tightly attached to the inner core outer shell 6. The inner core body 1 is limited by the inner core shell 6.

Preferably, the length of the stud segment 2 is smaller than the length of the mounting cavity segment 5. The length of the column head section 2 is shorter, conflict is better realized, and the tension of the timing chain is ensured.

The utility model discloses a working method as follows:

an inner core shell 6 is sleeved outside the inner core body 1, an oil hole 62 is formed in the bottom of the inner core shell 6, and two ends of the spring 11 are respectively connected with the second cavity 52 and the bottom of the inner core shell 6. The inner core body 1 is limited by the inner core shell 6, and the oil hole 62 is convenient for engine oil injection to push the inner core body 1; a conical cambered surface 61 is arranged in the inner core outer shell 6. Because a conical cambered surface 61 is formed in the inner core shell 6, a gap with a conical angle exists between the inner core body 1 and the inner core shell 6, and at the moment, the excessive engine oil can leak to the outside through the gap, so that the overpressure is prevented, and the lubrication effect is achieved. The tensioner shell 7 is sleeved outside the inner core shell 6, an oil injection cavity 71 is formed in the tensioner shell 7, and the oil injection cavity 71 is communicated with the oil hole 62. Through the communication between the oil injection cavity 71 and the oil hole 62, the oil pressure is ensured to enter the inner core shell 6, and the inner core body 1 is pushed.

The tension device is characterized by further comprising a ratchet strip 8, wherein a plurality of ratchets are arranged on one side of the ratchet strip 8, a first ratchet 81 is arranged on the other side of the ratchet strip 8, the ratchet strip 8 is installed in the tension device shell, a second ratchet 72 is arranged in the tension device shell and matched with one side of the ratchets of the ratchet strip 8, and the first ratchet 81 is used for being clamped into the limiting section 4. Through the cooperation of the ratchet strip 8, the second ratchet 72 and the limiting section 4, the inner core body 1 is ensured not to be pushed back into the tensioner by the interaction force brought by the timing chain.

During the use, engine oil gets into in the oilhole 62 of inner core shell 6 through annotating oil pocket 71, at first under oil pressure effect and compression spring 11's elasticity dual function, inner core body 1 outwards removes, spacing section 4 still is located inner core shell 6 this moment, do not contact with the ratchet, along with the chain to the needs of pressure, when spacing section 4 contacts with the ratchet, spring 11 elasticity resumes balance, do not compress and also not extend, because spacing section 4 card has the ratchet, inner core body 1 supports the back with the timing chain this moment, no matter whether the oil pressure disappears, all can not inwards move, after the oil pressure disappears, provide the tensile force of chain when adjusting well by the ratchet, spring 11 ensures that inner core body 1 can not break away from inner core shell 6.

The present invention has been described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims

1. The utility model provides a guide pillar inner core for rising and tightly stretching device which characterized in that: including inner core body (1), inner core body (1) is from last to including integrated into one piece's column cap section (2), linkage segment (3), spacing section (4) and installation chamber section (5) down, spacing section (4) external diameter is less than linkage segment (3) and installation chamber section (5) external diameter, linkage segment (3) length is greater than installation chamber section (5) length, install chamber section (5) interior from last to opening down and have first cavity (51) and second cavity (52), first cavity (51) cross section is less than second cavity (52).

2. The guide post inner core for the tensioner as claimed in claim 1, wherein: the connecting part of the column head section (2) and the connecting section (3) forms an arc-shaped inclined plane, and the outer diameter of the column head section (2) is smaller than that of the connecting section (3).

3. The guide post inner core for the tensioner as claimed in claim 1, wherein: the outer diameter of the connecting section (3) is equal to the outer diameter of the mounting cavity section (5).

4. The guide post inner core for the tensioner as claimed in claim 1, wherein: an inner core shell (6) is sleeved outside the installation cavity section (5), a spring (11) is arranged in the inner core shell (6), and two ends of the spring (11) are connected with the second cavity (52) and the bottom of the inner core shell (6) respectively.

5. The guide post inner core for the tensioner as claimed in claim 4, wherein: the installation cavity section (5) is tightly attached to the inner core outer shell (6).

6. The guide post inner core for the tensioner as claimed in claim 1, wherein: the length of the column head section (2) is less than that of the installation cavity section (5).