CN112440309A

CN112440309A - Cutting knob

Info

Publication number: CN112440309A
Application number: CN201910816942.XA
Authority: CN
Inventors: 陈柏仰
Original assignee: Rexon Industrial Corp Ltd
Current assignee: Rexon Industrial Corp Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-03-05

Abstract

A cutting knob is suitable for cutting a covering object covering the surface of a columnar object and comprises a body, a positioning unit arranged on the body along an axis, and a cutting unit arranged on the body. Defining the axis through the body. The cutting unit include with axis looks spaced cutting knife, the cutting knife can for the positioning unit is along perpendicular the cutting plane of axis is keeping away from the position and is being close to and removes between the position, works as the cutting knife is in when keeping away from the position, the cutting knife is kept away from the setting element, and not with the cover produces the interference, works as the cutting knife is in when being close to the position, the cutting knife is close to the setting element, the cutting knife can be followed the body winds the axis is rotatory, in order to follow the cutting plane encircles the cutting the cover makes the tip of column is exposed.

Description

Cutting knob

Technical Field

The invention relates to a knob, in particular to a cutting knob.

Background

In the prior art, some apparatuses, such as fitness equipment, are manufactured by coating a layer of covering material, such as rubber, acrylic rubber, foam, etc., on the surface of at least one element to perform the functions of anti-slip, anti-collision, or anti-corrosion, etc., and then assembling the elements, however, during the assembly, the covering material of a columnar assembly portion of the element needs to be removed to expose the assembly portion so as to connect with other elements.

Disclosure of Invention

The invention aims to provide a cutting knob which is convenient for removing a covering matter covering the surface of a column.

The cutting knob is suitable for cutting a covering object covering the surface of a columnar object, and comprises a body, a positioning unit and a cutting unit. An axis is defined that extends axially through the body. The positioning unit is arranged on the body along the axis and is used for positioning relative to the column. The cutting unit set up in the body, and include along the perpendicular the cutting plane setting of axis and with axis looks spaced cutting knife, the cutting knife can for the positioning unit is followed cutting plane removes keeping away from between the position and being close to the position, works as the cutting knife is in when keeping away from the position, the cutting knife is kept away from along cutting plane the setting element, works as the cutting knife is in when being close to the position, the cutting knife is followed cutting plane is close to the setting element, the cutting knife can be followed the body winds the axis is rotatory, with the edge cutting plane cutting the cover.

The cutting knob of the present invention, the cutter of the cutting unit has a tip directed toward the axis for piercing the covering when the cutter moves from the distant position toward the close position.

The cutting knob defines an operation direction parallel to the cutting plane, the cutting unit further comprises an operating rod which is movably arranged on the body along the operation direction and is connected with the cutting knife, and the operating rod can drive the cutting knife to move between the far position and the close position relative to the positioning unit along the operation direction under the drive of external force.

According to the cutting knob, the cutting unit further comprises an elastic piece which is arranged on the operating rod and abuts against the body, and the elastic piece is connected with the operating rod and constantly enables the cutting knife to move towards the approaching position.

The cutting knob of the invention is characterized in that the body further comprises an outer peripheral surface connected with the first surface and the second surface, the operating rod of the cutting unit is provided with a setting end connected with the cutting knife and an operating end which is opposite to the setting end along the operating direction and protrudes out of the outer peripheral surface, and the setting end and the operating end are respectively positioned on two opposite sides of the axis.

The cutting knob of the invention comprises a body and a positioning unit, wherein the body comprises a first surface and a second surface opposite to the first surface along the axis, the positioning unit protrudes out of the first surface of the body, and the cutting knife of the cutting unit is spaced from the first surface of the body along the axial direction.

According to the cutting knob, the positioning unit is provided with the abutting surface axially spaced from the first surface of the body and the positioning part protruding out of the abutting surface along the axis, the positioning part is inserted into the columnar object, the abutting surface abuts against one end face of the columnar object, and the body can rotate around the axis relative to the abutting surface and the positioning part.

According to the cutting knob, the positioning unit comprises a positioning part arranged on the body along the axis, and an abutting part arranged on the body and sleeved on the positioning part, the positioning part is provided with the positioning part, a connecting part opposite to the positioning part along the axis and connected with the body is provided with the abutting surface, a base surface opposite to the abutting surface along the axial direction and adjacent to the body is provided, and the abutting part is a thrust bearing.

According to the cutting knob, the positioning part of the positioning unit is provided with at least one limiting block which protrudes outwards along the radial direction of the axis, and the limiting block limits the abutting part along the axial direction.

According to the cutting knob, the positioning unit further comprises a bolt which is arranged in the positioning piece in a penetrating mode along the axis and is screwed on the body, the bolt is provided with a threaded portion which is screwed on the body, a head portion which is opposite to the threaded portion in the axial direction and is located on the outer side of the positioning portion, and an extending portion which is arranged in the positioning piece in a penetrating mode, the head portion limits the positioning piece in the axial direction, and the positioning piece can rotate relative to the extending portion.

The invention has the beneficial effects that: the cutting knife can move between the far position and the close position relative to the positioning unit along the cutting plane, so that when the cutting knob is positioned relative to the column, the cutting knife cannot interfere with the covering object, and then the positioning unit is arranged on the body along the axis, so that the body can drive the cutting knife to rotate around the axis by taking the positioning unit as a rotation center to surround the column to cut the covering object, and one end part of the column is exposed.

Drawings

Other features and effects of the present invention will be apparent from the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective assembly view of one embodiment of the cutting knob of the present invention mounted to a handrail of a treadmill;

FIG. 2 is an exploded perspective view of the embodiment with a post of the handrail and a covering the handrail;

FIG. 3 is a perspective view of the embodiment;

FIG. 4 is an exploded perspective view of the embodiment;

fig. 5 is a bottom view of the embodiment illustrating a state in which a cutter of the embodiment is at a distant position;

FIG. 6 is a bottom view similar to FIG. 5 illustrating the knife in an approximated position;

FIG. 7 is a side view of the embodiment;

FIG. 8 is a cross-sectional view of the embodiment disposed on the column and the covering illustrating the embodiment in a positioned position relative to the column with the cutter in the remote position;

FIG. 9 is a cross-sectional view of the embodiment disposed on the post and the covering illustrating the embodiment in a wrap-around cut of the covering with the cutter positioned between the distal position and the proximal position; and

fig. 10 is an exploded perspective view of the embodiment, the cover and the post, illustrating the cover being cut out a portion around the embodiment.

Detailed Description

Referring to fig. 1, 2 and 3, an embodiment of the cutting knob 100 of the present invention is adapted to cut a covering 900 covering a surface of a column 800, and the cutting knob 100 includes a body 1, a positioning unit 2 and a cutting unit 3.

Referring to fig. 3 and 4, an axis L is defined which extends along an axial direction D1 and through the body 1. The body 1 includes a first surface 11, a second surface 12 opposite to the first surface 11 along the axis L, and an outer peripheral surface 13 connecting the first surface 11 and the second surface 12.

Referring to fig. 4, 5, 7 and 8, the positioning unit 2 is disposed on the body 1 along the axis L and protrudes from the first surface 11 of the body 1. The positioning unit 2 includes a positioning member 21 disposed on the body 1 along the axis L, an abutting member 22 disposed on the body 1 and sleeved on the positioning member 21, and a bolt 23 passing through the positioning member 21 along the axis L and screwed to the body 1.

The positioning member 21 has a connecting portion 211 connected to the body 1, and a positioning portion 212 opposite to the connecting portion 211 along the axis L. The abutting member 22 has a base surface 221 adjacent to the body 1, and an abutting surface 222 opposite to the base surface 221 along the axial direction D1. The abutting surface 222 of the abutting piece 22 is spaced from the first surface 11 of the body 1 along the axial direction D1. The positioning portion 212 of the positioning member 21 protrudes out of the abutting surface 222 along the axis L, and the positioning portion 212 has at least one limiting block 213 protruding outward along the radial direction of the axis L, and the limiting block 213 abuts against the abutting surface 222 of the abutting member 22 to limit the abutting member 22 along the axial direction D1. The bolt 23 has a threaded portion 231 screwed to the body 1, a head portion 232 opposite to the threaded portion 231 along the axial direction D1 and located outside the positioning portion 212, and an extension portion 233 penetrating the positioning member 21, wherein the head portion 232 limits the positioning member 21 along the axial direction D1, and the positioning member 21 can rotate relative to the extension portion 233.

In this embodiment, the abutting element 22 is a thrust bearing, the limiting block 213 does not press the abutting element 22, and the number of the limiting blocks 213 is two.

It should be noted that the structure of the positioning unit 2 is not limited to this embodiment, and the positioning unit 2 may be a positioning pin or the like that can be used as a fulcrum for the rotation of the body 1 relative to the column 800.

Referring to fig. 4 and 7, the cutting unit 3 is disposed on the body 1. An operating direction D2 perpendicular to the axial direction D1 is defined, and in the present embodiment, the operating direction D2 is radial to the axis L, but not limited thereto. The cutting unit 3 comprises an operating rod 31 movably arranged on the body 1 along the operating direction D2, a cutting knife 32 connected with the operating rod 31, and an elastic member 33 arranged on the operating rod 31 and abutting against the body 1.

The operating rod 31 has a set end 311 connected to the cutting blade 32, and an operating end 312 opposite to the set end 311 along the operating direction D2 and protruding from the outer peripheral surface 13, wherein the set end 311 and the operating end 312 are respectively located on two opposite sides of the axis L.

Referring to fig. 4, 5 and 7, the cutter 32 is disposed at the setting end 311 along a cutting plane S perpendicular to the axis L, and the cutter 32 is spaced from the first surface 11 of the body 1 along the axial direction D1 and is spaced from the axis L. The blade 32 is in the form of an elongated blade and extends in the operating direction D2, and has a cutting edge 321 extending in the operating direction D2 for cutting, and a tip 322 pointing towards the axis L. The cutter 32 can rotate with the body 1 about the axis L to cut the covering 900 along the cutting plane S

The operating lever 31 can be moved by an external force in the operating direction D2 between a remote position (see fig. 5) and a close position (see fig. 6) relative to the positioning unit 2. When the cutting knife 32 is at the far position, the cutting knife 32 is far away from the positioning part 21 along the cutting plane S, and when the cutting knife 32 is at the near position, the cutting knife 32 is near to the positioning part 21 along the cutting plane S. And the tip 322 of the cutter 32 is adapted to pierce the cover 900 when the cutter 32 is moved from the distant position toward the close position.

The elastic member 33 is connected to the operation lever 31 and constantly moves the cutter 32 toward the approaching position.

In this embodiment, the main body 1 further includes a sliding slot 14 extending along the operating direction D2, and a slot end surface 15 adjacent to the sliding slot 14 and corresponding to the outer peripheral surface 13 along the operating direction D2, and the cutting unit 3 further includes a first stopper 34 disposed at the operating end 312 of the operating rod 31, a second stopper 35 disposed at the setting end 311 of the operating rod 31, and a third stopper 36 disposed between the operating end 312 and the setting end 311 of the operating rod 31 and located in the sliding slot 14. The elastic member 33 is a coil spring, and is wound around the operating rod 31 and located between the body 1 and the operating end 312, and two ends of the elastic member 33 respectively abut against the outer peripheral surface 13 of the body 1 and the first stopper 34. When the cutter blade 32 is moved to the distant position, the first stopper 34 approaches the body 1 in the forward direction of the operation direction (see the direction indicated by the arrow a in fig. 5) and compresses the elastic member 33.

The second stopper 35 and the third stopper 36 are engaged with the body 1 to limit the stroke of the operating lever 31 in the operating direction D2, and when the cutter blade 32 moves to the close position, the second stopper 35 abuts against the outer peripheral surface 13 of the body 1 in the direction opposite to the operating direction D2 (see the direction indicated by the arrow b in fig. 6), and the third stopper 36 abuts against the groove end surface 15 of the body 1 in the direction opposite to the operating direction D2 to prevent the cutter blade 32 from striking the positioning unit 2. In other embodiments, one of the second stopper 35 and the third stopper 36 may be omitted.

Referring to fig. 1 and 2, in the present embodiment, the column 800 is a base of a handrail 700 of a treadmill, the base is in a column shape, the cover 900 is a glue covering the surface of the handrail 700, the handrail 700 is glued on the surface by a glue bubble program during the manufacturing and assembling processes, therefore, the column 800 needs to be removed before assembling other parts of the handrail 700, and the column 800 includes an end portion 80, the end portion 80 has an end surface 801 and a central hole 802 penetrating the end surface 801. The cutting knob 100 of the present invention can be used to remove the glue, but the column 800 and the cover 900 for the cutting knob 100 of the present invention are not limited thereto.

Referring to fig. 5, in use, the operating end 312 of the operating rod 31 of the cutting knob 100 is pushed toward the main body 1 along the operating direction D2, so that the cutter 32 moves from the close position to the distant position, and the elastic element 33 is deformed. Referring to fig. 8, the cutting knife 32 is kept at the distant position, the positioning portion 212 of the positioning element 21 is inserted into the central hole 802 along the axial direction D1 from the end 80 of the column 800, and the abutting surface 222 of the abutting element 22 abuts against the end surface 801 of the column 800 along the axial direction D1, at this time, the cutting knife 32 is located outside the covering 900, and the abutting surfaces 222 of the positioning element 21 and the abutting element 22 are fixed relative to the end 80.

Referring to fig. 8, 9 and 10, when the positioning unit 2 of the cutting knob 100 is positioned relative to the column 800 and the external force applied to the operating rod 31 is removed, the elastic member 33 releases potential energy, so that the operating rod 31 drives the cutter 32 to move from the distant position to the close position along the operating direction D2, and the cutter 32 pierces the cover 900 through the tip 322 (see fig. 9, in fig. 9, the cutter 32 has already pushed up to the cover 900 and the column 800, and thus has not completely reached the close position). Then, the body 1 is rotated around the axis L with the positioning portion 212 of the positioning member 21 as a fulcrum, and the cutting unit 3 is driven to rotate around the axis L, so that the cutter 32 cuts the covering 900 along the cutting plane S in a surrounding manner. When the body 1 rotates, the abutting surface 222 of the positioning unit 2 and the positioning element 21 are fixed relative to the end 80 of the column 800, and the base surface 221 of the abutting element 22 rotates with the body 1. When the body 1 rotates more than one turn around the axis L, the cutting knob 100 is separated from the column 800, that is, the portion of the cover 900 located at the end 80 of the column 800 is cut off in a ring shape, so that the end 80 of the column 800 is exposed (see fig. 10).

Referring to fig. 1 and fig. 5, it should be noted that in this embodiment, the shape of the limiting block 213 of the positioning element 21 corresponds to the shape of the two ear portions 803 of the central hole 802 of the column 800, so that the positioning element 21 can be clamped in the central hole 802 when the body 1 rotates. Referring to fig. 9, the surface of the extension 233 of the bolt 23 is smooth, so that the body 1 and the positioning member 21 can rotate relatively, and the extension 233 of the bolt 23 can also be sleeved with a bushing or a bearing to reduce friction during rotation. In addition, the abutting member 22 is a thrust bearing, and therefore, can rotate even when a force is applied in the axial direction D1, so as to prevent the cutting knob from being pressed and pinned in the axial direction D1 due to excessive friction force and being difficult to rotate.

In the present embodiment, the cutting knob 100 is driven by a driving means 600 (see fig. 1) to cut the covering 900, but the cutting knob 100 may be manually operated to cut.

In summary, in the cutting knob 100 of the present invention, the positioning unit 2 is disposed on the body 1 along the axis L, so that the body 1 can rotate around the axis L with the positioning unit 2 as a rotation center, and the cutting knife 32 is driven to rotate around the axis L to cut the covering 900, and in addition, the cutting knife 32 can move between the far position and the close position along the cutting plane S relative to the positioning unit 2, so that when the cutting knob 100 is positioned relative to the column 800, the cutting knife 32 does not interfere with the covering 900, and can move to the close position after positioning, so as to cut the covering 900 along the cutting plane S in a ring shape along with the rotation of the body 1, thereby achieving the object of the present invention.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.

Claims

1. A cut-off knob suitable for cutting a covering over the surface of a column, characterized in that: the cleaving knob includes:

a body defining an axis extending axially and through the body;

the positioning unit is arranged on the body along the axis and is used for positioning relative to the column; and

the cutting unit, set up in the body, and include along the perpendicular the cutting plane setting of axis and with axis looks spaced cutting knife, the cutting knife can for the positioning unit is followed cutting plane removes keeping away from between the position and being close to the position, works as the cutting knife is in when keeping away from the position, the cutting knife is kept away from along cutting plane the setting element, works as the cutting knife is in when being close to the position, the cutting knife is followed cutting plane is close to the setting element, the cutting knife can be followed the body winds the axis is rotatory, with the edge cutting plane cutting the cover.

2. The severance knob according to claim 1 wherein: the cutter of the cutting unit has a tip directed toward the axis for piercing the covering when the cutter is moved from the distant position toward the close position.

3. The severance knob according to claim 1 wherein: the cutting unit further comprises an operating rod which can be movably arranged on the body along the operating direction and is connected with the cutting knife, and the operating rod can be driven by external force to drive the cutting knife to move between the far position and the close position relative to the positioning unit along the operating direction.

4. The severance knob according to claim 3 wherein: the cutting unit is still including set up in the action bars just leans on the elastic component of body, the elastic component is connected the action bars makes constantly the cutting knife moves towards be close to the position.

5. The severance knob according to claim 4 wherein: the body further comprises an outer peripheral surface connected with the first surface and the second surface, the operating rod of the cutting unit is provided with a setting end connected with the cutting knife and an operating end opposite to the setting end along the operating direction and protruding out of the outer peripheral surface, and the setting end and the operating end are respectively positioned on two opposite sides of the axis.

6. The severance knob according to claim 1 wherein: the body includes a first surface, and a second surface opposite to the first surface along the axis, the positioning unit protrudes from the first surface of the body, and the cutters of the cutting unit are spaced apart from the first surface of the body in the axial direction.

7. The severance knob according to claim 6 wherein: the positioning unit is provided with an abutting surface and a positioning part, the abutting surface is axially spaced from the first surface of the body, the positioning part protrudes out of the abutting surface along the axis, the positioning part is used for being inserted into the columnar object, the abutting surface is used for abutting against one end face of the columnar object, and the body can rotate around the axis relative to the abutting surface and the positioning part.

8. The severance knob according to claim 7 wherein: the positioning unit comprises a positioning part and a supporting part, wherein the positioning part is arranged on the positioning part of the body along the axis, the supporting part is arranged on the body and sleeved with the positioning part, the positioning part is provided with the positioning part and an axial direction opposite to the positioning part and connected with the connecting part of the body, the supporting part is provided with the supporting surface and an axial direction opposite to the supporting surface and adjacent to the base surface of the body, and the supporting part is a thrust bearing.

9. The severance knob according to claim 8 wherein: the positioning part of the positioning unit is provided with at least one limiting block which protrudes outwards along the radial direction of the axis, and the limiting block limits the abutting part along the axial direction.

10. The severance knob according to claim 8 wherein: the positioning unit further comprises a bolt which is arranged on the body in a penetrating mode along the axis, the positioning piece is arranged on the positioning unit in a penetrating mode, the bolt is provided with a threaded portion which is locked on the body in a penetrating mode, a head which is opposite to the threaded portion in the axial direction and located on the outer side of the positioning portion, the head penetrates through the extending portion of the positioning piece, the head is limited in the axial direction, and the positioning piece can rotate relative to the extending portion.