CN210769798U

CN210769798U - A novel rubber spare bellows for protection of car cable

Info

Publication number: CN210769798U
Application number: CN201921678979.2U
Authority: CN
Inventors: 颜泽刚; 胡长清
Original assignee: Chongqing Hengyu Rubber & Plastic Industry Co ltd
Current assignee: Chongqing Hengweilin Automotive Parts Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-06-16
Anticipated expiration: 2029-10-09

Abstract

The utility model provides a novel rubber piece corrugated pipe for protecting an automobile inhaul cable, which consists of a big-end plastic piece (1), a small-end plastic piece (3) and a middle wavy rubber sleeve (2); big first working of plastics (1) divide into square section (11) and cylindricality section (12), the wave rubber divide into thick section (21), changeover portion (22) and thin section (23), little first working of plastics (3) divide into funnel section (31) and little cylindricality section (32). The utility model is used for shift cable gearbox end, its with the cable with around spare part frictional resistance little, can not take place great deformation, long service life, sealed effectual, can effectively avoid producing the air abnormal sound.

Description

A novel rubber spare bellows for protection of car cable

Technical Field

The utility model relates to an automobile parts especially relates to a novel rubber spare bellows for car cable protection.

Background

The automobile cable is a structure commonly adopted in devices such as an accelerator, a clutch, a choke valve, a hand brake, a flameout device and the like of an automobile, can operate the running speed or traction force of the automobile by acting on a pull rod, and is generally divided into an accelerator cable, a clutch cable, a brake cable, a flexible shaft of a odometer, a gear selecting and shifting cable and the like.

In the protection of the automobile stay cable applied in the current market, the automobile stay cable corrugated pipe is easy to rub against the stay cable and surrounding parts, so that the aging of the corrugated pipe is accelerated; meanwhile, the joint of the two ends of the corrugated pipe is a plastic part, so that the corrugated pipe is easy to deform when impacted, and the whole service life of the corrugated pipe is influenced.

Bellows two among the prior art is connected through round hole and cylinder connected mode usually with whole car, can not carry out effectual sealed, leads to gathering the dust in the bellows, influences the use of cable and produces the abnormal sound.

SUMMERY OF THE UTILITY MODEL

To the shortcoming that above-mentioned prior art exists, the utility model aims to provide a novel bellows that is used for car cable protection that long service life, sealed effectual, little with cable and spare part frictional resistance on every side.

The utility model discloses the purpose is realized through following technical scheme:

the utility model provides a novel rubber spare bellows for protection of car cable which characterized in that: the rubber sleeve consists of a big-end plastic piece, a small-end plastic piece and a middle wavy rubber sleeve; the wavy rubber sleeve is hollow and is divided into a thick section, a transition section and a thin section; the wave crest of the thick section is higher than that of the transition section, the wave crest of the transition section is higher than that of the thin section, and the heights of the wave troughs of the thick section, the transition section and the thin section are all consistent; the inside of the big-end plastic part is a hollow big-end inner cavity, and the minimum diameter of the big-end inner cavity is equal to the diameter of the wave crest of the thick section; the big-end plastic part is an integrally formed plastic part and is divided into a square section and a cylindrical section, the square section is connected with the thick section, two ends of the square section are big, the middle of the square section is small, an annular groove is formed in the middle of the square section, and the annular groove is smoothly connected with two end faces of the square section through inclined planes; the inside of the small-head plastic part is a hollow small-head inner cavity, and the maximum diameter of the small-head inner cavity is equal to the diameter of the wave crest of the thin section; the small-head plastic part is an integrally formed plastic part and is divided into a funnel section and a small cylindrical section, and the large-diameter end of the funnel section is connected with the thin section; the central axes of the small-head inner cavity, the large-head inner cavity and the wavy rubber sleeve are on the same straight line.

By adopting the corrugated pipe with the structure, the square section with the annular groove is additionally arranged between the cylindrical section and the rubber sleeve, and the funnel section is additionally arranged between the small cylindrical section and the rubber sleeve, so that the corrugated pipe is tightly and hermetically connected with the whole vehicle, and the entry of water vapor, dust and other substances is avoided, thereby influencing the use performance of the inhaul cable. Meanwhile, through the inclined plane design of the annular groove and the funnel-shaped groove, the axial stress and the shearing stress of the corrugated pipe when the corrugated pipe is impacted are effectively dispersed, the large-head plastic part and the small-head plastic part are prevented from deforming, and the service life of the corrugated pipe is shortened.

The wavy rubber sleeve avoids the corrugated pipe from rubbing with surrounding parts through the combination of the thick section, the transition section and the thin section, thereby avoiding the reduction of the service life of the corrugated pipe. Meanwhile, the thick section and the thin section are smoothly connected through the design of the transition section, so that the situation that the joint of the thick section and the thin section is subjected to larger stress relative to other points when the corrugated pipe is transversely extended, and the joint is broken is avoided; the smooth transition also effectively avoids the problem that the wave crest cavity of the corrugated pipe generates abnormal air sound due to huge fall when the corrugated pipe is prolonged or shortened.

For further optimization, the distance S between the wave crest and the wave trough of the transition section is 1/2 of the distance H between the wave crest and the wave trough of the coarse section; the distance L between the peaks and the troughs of the thin sections is 1/2 of the distance S between the peaks and the troughs of the transition sections; i.e., S-1/2H and L-1/2S (where the distance between a peak and a valley is the perpendicular distance between a peak and its adjacent valley).

Preferably, the cross section of the annular groove is square.

The utility model discloses has following technological effect:

the corrugated pipe has excellent sealing performance, long service life and small frictional resistance with surrounding parts through the composition of the big head plastic part, the small head plastic part and the wavy rubber sleeve; through the design of annular groove and infundibulate, guarantee under great stress that the working of plastics of bellows have certain anti-deformation ability. Meanwhile, the corrugated rubber sleeve is designed in a segmented mode, so that the corrugated pipe cannot be broken or abnormal sound cannot be generated due to sudden stress change of a certain point in the using process of the corrugated rubber sleeve.

Drawings

Fig. 1 is a schematic structural view of the novel corrugated pipe in the embodiment of the present invention.

Fig. 2 is a cross-sectional view of the novel corrugated pipe in the embodiment of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Wherein, 1, a big head plastic part; 11. a square section; 111. an annular groove; 12. a cylindrical section; 2. a wavy rubber sleeve; 21. coarse section; 22. a transition section; 23. a thin section; 3. a small plastic part; 31. a funnel section 32, a small cylindrical section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments.

As shown in fig. 1-3, a novel rubber member corrugated pipe for protecting an automobile cable is characterized in that: the plastic pipe is composed of a big-end plastic part 1, a small-end plastic part 3 and a middle wavy rubber sleeve 2; the wavy rubber sleeve 2 is hollow and is divided into a thick section 21, a transition section 22 and a thin section 23; the wave crest of the thick section 21 is higher than that of the transition section 22, the wave crest of the transition section 22 is higher than that of the thin section 23, and the heights of the wave troughs of the thick section 21, the transition section 22 and the thin section 23 are all consistent; the inside of the big-head plastic part 1 is a hollow big-head inner cavity, and the minimum diameter of the big-head inner cavity is equal to the diameter of the wave crest of the thick section 21; the big-end plastic part 1 is an integrally formed plastic part and is divided into a square section 11 and a cylindrical section 12, the square section 11 is connected with the thick section 21, the two ends of the square section are big, the middle of the square section is small, an annular groove 111 is formed in the middle of the square section, and the annular groove 111 is smoothly connected with the two end faces of the square section 11 through inclined planes; the inside of the small-head plastic part 3 is a hollow small-head inner cavity, and the maximum diameter of the small-head inner cavity is equal to the diameter of the wave crest of the thin section 23; the small-head plastic part 3 is an integrally formed plastic part and is divided into a funnel section 31 and a small cylindrical section 32, and the large-diameter end of the funnel section 31 is connected with the thin section 23; the central axes of the small-head inner cavity, the large-head inner cavity and the wavy rubber sleeve 2 are on the same straight line.

As further shown in fig. 2, the distance S between the peaks and the troughs of the transition section 22 is 1/2 of the distance H between the peaks and the troughs of the thick section 21; the distance L between the wave crest and the wave trough of the thin section 23 is 1/2 of the distance S between the wave crest and the wave trough of the transition section 22; i.e., S-1/2H and L-1/2S (where the distance between a peak and a valley is the perpendicular distance between a peak and its adjacent valley).

As further shown in fig. 3, the annular groove 111 has a square cross section.

The utility model discloses an annular slot 111 and inclined plane, the design of funnel section 31 ensure that the working of plastics can not produce deformation when receiving the impact, simultaneously, through 2 each section designs of wave rubber sleeve, make the bellows be difficult for and take place the friction with spare part on every side, reduce the resistance of bellows and inside cable, increase the life of whole bellows.

By the design of the square section 11 and the funnel section 31, the sealing performance of the corrugated pipe is improved, and the sealing space of the corrugated pipe is tighter; meanwhile, the smooth transition of all wave crests of the wavy rubber sleeve 2 is matched, and the generation of abnormal air sound is effectively avoided.

Claims

1. The utility model provides a novel rubber spare bellows for protection of car cable which characterized in that: the plastic pipe is composed of a big-end plastic part (1), a small-end plastic part (3) and a middle wavy rubber sleeve (2); the wavy rubber sleeve (2) is hollow and is divided into a thick section (21), a transition section (22) and a thin section (23); the wave crest of the thick section (21) is higher than that of the transition section (22), the wave crest of the transition section (22) is higher than that of the thin section (23), and the heights of the wave troughs of the thick section (21), the transition section (22) and the thin section (23) are consistent; the inside of the big-end plastic part (1) is a hollow big-end inner cavity, and the minimum diameter of the big-end inner cavity is equal to the diameter of the wave crest of the thick section (21); the large-head plastic part (1) is an integrally formed plastic part and is divided into a square section (11) and a cylindrical section (12), the square section (11) is connected with the thick section (21), two ends of the square section are large, the middle of the square section is small, an annular groove (111) is formed in the middle of the square section, and the annular groove (111) is smoothly connected with two end faces of the square section (11) through inclined planes; the interior of the small-head plastic part (3) is a hollow small-head inner cavity, and the maximum diameter of the small-head inner cavity is equal to the diameter of the wave crest of the thin section (23); the small-head plastic part (3) is an integrally formed plastic part and is divided into a funnel section (31) and a small cylindrical section (32), and the large-diameter end of the funnel section (31) is connected with the thin section (23); the central axes of the small-head inner cavity, the large-head inner cavity and the wavy rubber sleeve (2) are on the same straight line.

2. The novel rubber piece corrugated pipe for protecting the automobile cable according to claim 1, is characterized in that: the distance S between the wave crest and the wave trough of the transition section (22) is 1/2 of the distance H between the wave crest and the wave trough of the thick section (21); the distance L between the wave crest and the wave trough of the thin section (23) is 1/2 of the distance S between the wave crest and the wave trough of the transition section (22); i.e., S =1/2H, L = 1/2S.

3. The novel rubber piece corrugated pipe for protecting the automobile cable according to claim 2, is characterized in that: the cross section of the annular groove (111) is square.