Hose fixture device

• US 5,042,844 A
• Filed: 12/28/1989
• Issued: 08/27/1991
• Est. Priority Date: 12/29/1988
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd., Tagasangyo Limited
• Original Assignee: Hitachi, Ltd., Tagasangyo Limited
• Inventors: Iwao, Akira, Iida, Akira, Suzuki, Naruhiko, Hiruta, Yasuyuki, Ishii, Yoshitaro
• Primary Examiner(s): Arola, Dave W.
• Assistant Examiner(s): SHACKELFORD, HEATHER CHUN
• Application Number:
  US07/458,294
• Time in Patent Office: 607 Days
• Field of Search: 285/331, 285/403, 285/903, 285/921, 285/93, 285/391, 285/319, 285/251, 285/423, 285/7, 285/303, 285/328, 403/27, 403/300, 403/305
• US Class Current: 285/7
• CPC Class Codes: A47L 9/242 Hose or pipe couplings
• CPC Class Codes: F16L 25/0036 Joints for corrugated pipes
• CPC Class Codes: F16L 37/0985 the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part F16L37/0982 takes precedence
• CPC Class Codes: Y10S 285/903 Corrugated
• CPC Class Codes: Y10S 285/921 Snap-fit

Abstract

A hose fixture device has a cylindrical wall with projections thereon, which projections engage a corresponding mounting projection of a hose. Normally that mounting projection is a helix, so that there is a screw engagement. The projections are arranged circumferentially around the cylindrical wall with gaps therebetween. There are also gripper members, again spaced circumferentially with gaps therebetween, which grip an end of the hose. The gaps make is easy to see such engagement. The gripper members are aligned with the gaps between those projections. This provides a secure fixing of the hose to the hose fixture device. Furthermore, the device may be moulded easily. Such a hose fixture device may be used to attache a hose joint component (e.g. a suction tool) to a hose of an electric vacuum cleaner.

Claims

1. A hose fixture device for attachment to a hose having a mounting projection thereon, the hose fixture device comprising:

a first cylindrical wall portion and a second cylindrical wall portion;

a plurality of projections on said first cylindrical wall portion for engaging said mounting projection on said hose to thereby engage said hose to said hose fixture device, said projection projecting from said first cylindrical wall portion in a radial direction and being spaced apart in a circumferential direction of said first cylindrical wall portion such that there is a circumferential gap between adjacent projections in the circumferential direction; and

a plurality of gripping members provided on said second cylindrical wall portion for engaging an end of said hose, said gripping members projecting from said second cylindrical wall portion in a radial direction and being integral with said first cylindrical wall portion and being spaced apart in the circumferential direction so that there is a gap between adjacent gripping members in the circumferential direction.

2. A hose fixture device according to claim 1, wherein said gripping members are circumferentially aligned with said circumferential gaps between said adjacent projections, and said projections and said gripping members are axially spaced from each other.

3. A hose fixture device according to claim 1, wherein said gripping members have at least one rib thereon, said at least one rib extending axially of the corresponding gripping member for engagement of an end with said hose when said hose fixture device is engaged with said hose.

4. A hose fixture device according to claim 1, said first cylindrical wall portion and said second cylindrical wall portion are radially spaced from each other so as to define therebetween a space for receiving said hose.

5. A hose fixture device according to claim 1, wherein said mounting projection of said hose forms a helix, and said projections form a discontinuous helix.

6. A hose fixture device for attachment to a hose having a mounting projection thereon, the fixture device comprising:

a first cylindrical wall having means thereon to engage said mounting projection on said hose to attach the hose to the hose fixture device; and

a plurality of gripping members on a second wall for engaging an end of said hose, said gripping members projecting from said wall in a radial direction and being spaced apart in the circumferential direction such that there is a gap between adjacent ones of said gripping members in the circumferential direction;

whereby said hose fixture device is engageable with said hose with said gripping members engaging an end of said hose, parts of said end of said hose being visible in the axial direction due to said circumferential gaps between said gripping members.

7. A hose fixture device according to claim 6, wherein said gripping members have at least one rib thereon extending axially of said gripping member for engagement of an end of said hose when said hose fixture device is engaged with said hose.

8. A hose fixture device for attachment to a hose having a mounting projection thereon, the fixture device comprising:

a first cylindrical wall having means thereon to engage said mounting projection on said hose to attach the hose to the hose fixture device; and

a plurality of gripping members on a second wall for engaging an end of said hose, said gripping members projecting from said wall in a radial direction and being spaced apart in the circumferential direction such that there is a gap between adjacent ones of said gripping members in the circumferential direction;

wherein said gripping members have at least one rib thereon, said at least one rib extending axially of said gripping member for engagement of an end of said hose when said hose fixture device is engaged with said hose.

9. A hose end assembly for attachment to a hose having a mounting projection thereon the hose end assembly comprising:

a hose fixture device having a first cylindrical wall portion;

a plurality of projections on said first cylindrical wall portion for engaging said mounting projection on said hose to thereby engage said hose to said hose fixture device, said projections projecting from said first cylindrical wall portion in a radial direction and being spaced apart in the circumferential direction of said first cylindrical wall portion so that there is a circumferential gap between adjacent projections in the circumferential direction;

a retainer abutting a first part of said hose fixture device; and

a hose joint component abutting a second part of said hose fixture device, said hose joint component and said retainer being engaged together such that said hose fixture device is rotatably retained between said hose joint component and said retainer.

10. A hose end assembly according to claim 9, wherein said hose joint component includes a cylindrical wall extending around said hose fixture device, said hose joint component and said retainer having at least one interlocking engagement projection and bore for engagement of said hose joint component and said retainer.

11. A hose end assembly according to claim 9, wherein said hose fixture device includes a second cylindrical wall portion having a plurality of gripping members thereon for engaging an end of said hose, said gripping members projecting from said second cylindrical wall portion in a radial direction and being spaced apart in the circumferential direction so that there is a gap between adjacent gripping members in the circumferential direction, and wherein said gripping members are circumferentially aligned with said circumferential gaps between said adjacent projections, and said projections and said gripping members are axially spaced from each other.

12. A hose end assembly according to claim 9, wherein said first part of said hose fixture device is an annular projecting wall, said hose joint component has a cylindrical projection engaging said annular projecting wall of said hose fixture device, and at least one of said cylindrical projections of said hose joint component and said annular projecting wall of said hose fixture device is axially tapered.

13. A hose end assembly for attachment to a hose having a mounting projection thereon, comprising:

a hose fixture device having a cylindrical wall, and a plurality of gripping members on said wall for engaging an end of said hose, said gripping members projecting from said wall in a radial direction and being spaced apart in the circumferential direction such that there is a gap between adjacent ones of said gripping members in the circumferential directions;

a retainer abutting a first part of said hose fixture device; and

a hose joint component abutting a second part of said hose fixture device, said hose joint component and said retainer being engaged together so that said hose fixture device is rotatably retained between said hose joint component and said retainer.

14. A hose end assembly for attachment to a hose having a mounting projection thereon, comprising:

a hose fixture device having a cylindrical wall having mounting means thereon to engage said mounting projection on said hose to attach the hose to the hose fixture, and a plurality of gripping members on said wall for engaging an end of said hose, said gripping members projecting from said wall in a radial direction and being spaced apart in the circumferential direction such that there is a gap between adjacent ones of said gripping members in the circumferential direction;

wherein said gripping members have at least one rib thereon, said at least one rib extending axially of said gripping member for engagement of an end of said hose when said hose fixture device is engaged with said hose;

a retainer abutting a first part of said hose fixture device; and

a hose joint component abutting a second part of said hose fixture device, said hose joint component and said retainer being engaged together such that said hose fixture device is rotatably retained between said hose joint component and said retainer.

15. A hose end assembly for attachment to a hose having a mounting projection thereon, comprising:

a hose fixture device having a cylindrical wall, means for engaging said mounting projection of said hose to engage said hose fixture device to said hose, an abutment surface, and an annular projecting wall;

a retainer abutting said abutment surface of said hose fixture device; and

a hose joint component having a cylindrical projection engaging said annular projecting wall of said hose fixture device, at least one of said cylindrical projection of said hose joint component and said annular projecting wall of said hose fixture device being axially tapered;

wherein said hose joint component and said retainer are engaged together such that said hose fixture device is rotatably retained between said hose joint component and said retainer.

16. A hose fixture device for attachment to a hose having a mounting projection thereon, the hose fixture device comprising:

a first cylindrical wall having mounting means thereon to engage said mounting projection on said hose to attach the hose to the hose fixture; and

a plurality of hose engagement means on second wall for engaging said mounting projection on said hose, thereby to engage said hose to said hose fixture device;

wherein said hose engagement means is arranged to grip said mounting projection between said hose engagement means with elastic deformation of said hose between said hose engagement means so as to prevent free rotation of said hose and said hose fixture device, forced rotation of said hose and said hose fixture device above a predetermined loading releasing said grip without damage to said hose or said hose fixture device, whereby said hose fixture device is disengagable from said hose.