CN213496728U - Hole saw with reinforcing sheet - Google Patents
Hole saw with reinforcing sheet Download PDFInfo
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- CN213496728U CN213496728U CN202022504138.9U CN202022504138U CN213496728U CN 213496728 U CN213496728 U CN 213496728U CN 202022504138 U CN202022504138 U CN 202022504138U CN 213496728 U CN213496728 U CN 213496728U
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- hole
- connecting rod
- saw
- saw blade
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Abstract
The utility model relates to a hole saw with a reinforcing sheet, which comprises a handle part and a saw blade connected on the handle part; the saw blade is bowl-shaped, a non-circular center hole is formed in the bottom of the bowl of the saw blade, a connecting rod matched with the center hole is arranged on the handle portion, a reinforcing piece is sleeved on the connecting rod, a connecting column is arranged on the reinforcing piece, a connecting hole is formed in the saw blade, the connecting column is inserted into the connecting hole, a nut is screwed on the connecting rod, and the nut compresses the reinforcing piece and the saw blade. The cover has been put the saw bit and has been strengthened the piece on the connecting rod, the connecting rod can transmit torsion for strengthening the piece, strengthen linking to each other through the spliced pole between piece and the saw bit, strengthen the piece and can transmit torsion for the saw bit through the spliced pole, be equivalent to the connecting rod can transmit torsion for the saw bit indirectly, and like this, the transmission torsion at saw bit centre bore position reduces, thereby reduce the shearing effect at centre bore edge to the connecting rod position, on the torsion of stalk portion transmits the saw bit more easily, prolong the whole life of hole saw.
Description
Technical Field
The utility model belongs to a cutting device especially relates to a hole saw of piece is strengthened in area.
Background
In operation, cutting tools are commonly used to sever materials. If the cut shape is circular, a hole saw, which is a tool capable of cutting a circular hole, is used.
The hole saw comprises a saw blade and a handle, wherein the saw blade and the handle are connected and fixed through a nut after being matched. During cutting, the power of the handle is completely transmitted through the central hole of the saw blade, so that the edge position of the central hole of the saw blade is stressed to the maximum. However, because the thickness of the saw blade is small, the edge of the central hole is easy to produce shearing effect on the handle, which affects the service life of the handle.
Disclosure of Invention
The utility model provides an among the prior art, the whole direct transmission of power that the stalk portion produced gives the saw bit, form shearing effect easily at the centre bore position of saw bit, influence the defect in the life-span of stalk portion, a hole saw of piece is strengthened in the area is provided, increase between saw bit and the stalk portion and strengthen the piece, it links to each other through the spliced pole to strengthen between piece and the saw bit, the power that the stalk portion produced is except that direct transmission gives the saw bit, can also transmit for the saw bit through strengthening the piece indirectly, thereby reduce the interact power of saw bit centre bore border position, make the torsion of stalk portion transmit for the saw bit more easily, thereby prolong the life of.
The utility model discloses a concrete technical scheme does: a hole saw with a reinforcing sheet comprises a handle part and a saw blade connected to the handle part; the saw blade is bowl-shaped, a non-circular center hole is formed in the bottom of the bowl of the saw blade, a connecting rod matched with the center hole is arranged on the handle portion, a reinforcing piece is sleeved on the connecting rod, a connecting column is arranged on the reinforcing piece, a connecting hole is formed in the saw blade, the connecting column is inserted into the connecting hole, a nut is screwed on the connecting rod, and the nut compresses the reinforcing piece and the saw blade.
The saw bit has been put to the cover on the connecting rod, the connecting rod passes through the centre bore transmission torsion of saw bit, still the cover has been put on the connecting rod and has been strengthened the piece, the connecting rod can transmit torsion for strengthening the piece, it links to each other through the spliced pole between piece and the saw bit to strengthen the piece, strengthen the piece and can transmit torsion for the saw bit through the spliced pole, the connecting rod can transmit torsion for the saw bit indirectly in other words, thus, the transmission torsion at saw bit centre bore position reduces, thereby reduce the shearing effect at centre bore edge to the connecting rod position, the torsion of stalk portion transmits the saw bit more easily, the.
Preferably, the central hole is a long waist hole, the two sides of the central hole are parallel straight edges, the end parts of the two straight edges are connected through convex arc edges, the shape of the connecting rod is similar to that of the central hole, and the fit clearance of the connecting rod and the central hole is controlled to be 0.1 mm. The central hole is a long waist hole instead of a round hole, so that the connecting rod cannot rotate relatively after being matched with the saw blade, and the torque force of the handle part can be transmitted to the saw blade.
Preferably, the end of the connecting rod is provided with a triangular connecting rod, the size of the circumscribed circle of the triangular connecting rod is larger than the maximum size of the central hole of the saw blade, the other end of the connecting rod is provided with a threaded part, the outer diameter of the threaded part is smaller than the minimum size of the central hole of the saw blade, the nut is screwed on the threaded part, and the triangular connecting rod and the nut clamp the saw blade and the reinforcing sheet. The connecting rod passes the centre bore from the bowl mouth end of saw bit, and the triangle of connecting rod tip connects the pole and plays limiting displacement, strengthens piece and saw bit laminating, and after screwing the nut on the connecting rod, nut and triangle connect the pole just in time to be in two outsides of strengthening piece and saw bit, and nut and triangle connect the pole and press from both sides tight strengthening piece and saw bit.
Preferably, the shape of the nut is hexagonal, an inner hole is formed in the axis position of the nut, one end of the inner hole is a threaded hole, the other end of the inner hole is a unthreaded hole, the inner diameter of the unthreaded hole is larger than that of the threaded hole, and the inner diameter of the unthreaded hole is larger than the maximum circumferential dimension of the connecting rod. The unthreaded hole is used for accommodating the connecting rod, so that the end face of the nut can be contacted with the reinforcing sheet.
Preferably, the reinforcing sheet is provided with two through holes at the middle position, and the two connecting columns are symmetrically arranged relative to the through hole in the middle. The spliced pole on the reinforcing piece is two, and the perforation symmetrical arrangement in the relative centre of two spliced poles, and the atress is more stable when reinforcing piece transmits torsion like this.
Preferably, the handle is provided with a jack at the center of one end inserted into the central hole of the saw blade, a drill bit is inserted into the jack, the depth of the jack extends to the end of the connecting rod, the connecting rod is provided with a radial locking hole, and the locking hole is communicated with the jack.
Further preferably, the handle part also comprises a connecting handle connected to the tail end of the connecting rod, the cross section of the connecting handle is triangular, and the diameter of the circumscribed circle of the connecting handle is smaller than the minimum size of the connecting rod.
The utility model has the advantages that: the saw bit has been put to the cover on the connecting rod, the connecting rod passes through the centre bore transmission torsion of saw bit, still the cover has been put on the connecting rod and has been strengthened the piece, the connecting rod can transmit torsion for strengthening the piece, it links to each other through the spliced pole between piece and the saw bit to strengthen the piece, strengthen the piece and can transmit torsion for the saw bit through the spliced pole, the connecting rod can transmit torsion for the saw bit indirectly in other words, thus, the transmission torsion at saw bit centre bore position reduces, thereby reduce the shearing effect at centre bore edge to the connecting rod position, the torsion of stalk portion transmits the saw bit more easily, the.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a schematic view of a saw blade according to the present invention;
FIG. 4 is a schematic view of a handle structure of the present invention;
FIG. 5 is a schematic view of a reinforcing sheet according to the present invention;
in the figure: 1. saw bit, 2, reinforcing sheet, 3, connecting rod, 4, nut, 5, connecting handle, 6, triangle extension rod, 7, drill bit, 8, connecting hole, 9, centre bore, 10, locking hole, 11, screw thread portion, 12, unthreaded hole, 13, screw hole, 14, spliced pole.
Detailed Description
The invention will be further described with reference to specific embodiments and with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and 2, a hole saw with a reinforcing piece includes a shank, a saw blade 1 attached to the shank, and a reinforcing piece 2 attached to the shank, the reinforcing piece being connected to the saw blade.
As shown in fig. 3, the saw blade is bowl-shaped, the bottom of the saw blade is provided with a non-circular central hole 9, the bottom of the bowl is also provided with two circular connecting holes 8, and the two circular connecting holes are symmetrically arranged relative to the central hole. The central hole is a long waist hole, two sides of the central hole are parallel straight edges, the end parts of the two straight edges are connected through an outward convex arc edge, and the connecting line of the two connecting holes is vertical to the straight edge of the central hole.
As shown in figure 4, the handle part is provided with a connecting rod 3 matched with the central hole, the end part of the connecting rod is provided with a triangular connecting rod 6, the shape of the connecting rod is similar to that of the central hole, and the matching clearance of the connecting rod and the central hole is controlled to be 0.1 mm. The circumscribed circle size of the triangular connecting rod is larger than the maximum size of the saw blade center hole, the other end of the connecting rod is provided with a thread part 11, the outer diameter of the thread part is smaller than the minimum size of the saw blade center hole, and a nut 4 is screwed on the thread part. The stalk portion is still including connecting in the connecting handle 5 of connecting the connecting rod tail end, and the cross-section of connecting the handle is triangle-shaped, and the circumscribed circle diameter of connecting the handle is less than the minimum size of connecting rod. The appearance of nut is the hexagon, and the axle center position of nut is provided with the hole, and the one end of hole is screw hole 13, and the other end of hole is unthreaded hole 12, and the internal diameter of unthreaded hole is greater than the internal diameter of screw hole, and the internal diameter of unthreaded hole is greater than the maximum circumference size of connecting rod.
As shown in fig. 5, the reinforcing sheet is rectangular, a through hole is arranged in the middle of the reinforcing sheet, two connecting columns 14 are arranged on the reinforcing sheet, and the two connecting columns are symmetrically arranged relative to the through hole in the middle. The position of the connecting column corresponds to the position of the connecting hole of the saw blade, and the connecting column and the triangular connecting rod are avoided.
The connecting handle stretches into and passes the centre bore of saw bit from the bowl mouth of saw bit, the centre bore cover of saw bit put with the connecting rod on, the triangle connects the pole to be in the bowl of saw bit, overlaps again on the connecting rod and puts the enhancement piece, the spliced pole of strengthening the piece passes the connecting hole in the saw bit is outside from the saw bit, the nut is revolved in screw thread portion nut unthreaded hole one end towards the saw bit after that, the connecting rod stretches into in the unthreaded hole, the nut compresses tightly and strengthens piece and saw bit.
The central part of one end of the handle part inserted into the central hole of the saw blade is provided with an inserting hole, a drill bit 7 is inserted into the inserting hole, the depth of the inserting hole extends to the end of the connecting rod, a radial locking hole 10 is arranged on the connecting rod, and the locking hole is communicated with the inserting hole. The drill bit is inserted into the jack, and the fastening screw is screwed into the locking hole in the radial direction to fix the drill bit.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (7)
1. A hole saw with a reinforcing sheet is characterized by comprising a handle part and a saw blade connected to the handle part; the saw blade is bowl-shaped, a non-circular center hole is formed in the bottom of the bowl of the saw blade, a connecting rod matched with the center hole is arranged on the handle portion, a reinforcing piece is sleeved on the connecting rod, a connecting column is arranged on the reinforcing piece, a connecting hole is formed in the saw blade, the connecting column is inserted into the connecting hole, a nut is screwed on the connecting rod, and the nut compresses the reinforcing piece and the saw blade.
2. The hole saw with the reinforcing sheet as claimed in claim 1, wherein the central hole is a long waist hole, two sides of the central hole are parallel straight edges, the ends of the two straight edges are connected through an outward convex arc edge, the shape of the connecting rod is similar to that of the central hole, and the fit clearance between the two is controlled to be 0.1 mm.
3. The hole saw with the reinforcing piece as claimed in claim 1, wherein the end of the connecting rod is provided with a triangular connecting rod, the size of the circumcircle of the triangular connecting rod is larger than the maximum size of the central hole of the saw blade, the other end of the connecting rod is provided with a threaded portion, the outer diameter of the threaded portion is smaller than the minimum size of the central hole of the saw blade, the nut is screwed on the threaded portion, and the triangular connecting rod and the nut clamp the saw blade and the reinforcing piece.
4. A hole saw with a reinforcing sheet as claimed in claim 1 or 3, wherein the nut is hexagonal, the axial center of the nut is provided with an inner hole, one end of the inner hole is a threaded hole, the other end of the inner hole is a unthreaded hole, the inner diameter of the unthreaded hole is larger than that of the threaded hole, and the inner diameter of the unthreaded hole is larger than the maximum circumferential dimension of the connecting rod.
5. The hole saw with the reinforcing sheet as claimed in claim 1, wherein the reinforcing sheet is provided with two through holes at the middle position, and the two connecting columns are symmetrically arranged relative to the through hole at the middle position.
6. A hole saw with reinforcing ribs as claimed in claim 1, 2, 3 or 5, wherein the shank has a central hole at its end inserted into the central hole of the saw blade, a drill bit is inserted into the hole, the depth of the hole extends to the end of the connecting rod, and the connecting rod has a radial locking hole communicating with the hole.
7. A hole saw with reinforcing ribs according to claim 1, 2, 3 or 5 wherein the shank further comprises a shank connected to the end of the connecting rod, the shank having a triangular cross-section and the diameter of the circumscribed circle of the shank being less than the smallest dimension of the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022504138.9U CN213496728U (en) | 2020-11-03 | 2020-11-03 | Hole saw with reinforcing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022504138.9U CN213496728U (en) | 2020-11-03 | 2020-11-03 | Hole saw with reinforcing sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213496728U true CN213496728U (en) | 2021-06-22 |
Family
ID=76420371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022504138.9U Active CN213496728U (en) | 2020-11-03 | 2020-11-03 | Hole saw with reinforcing sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213496728U (en) |
-
2020
- 2020-11-03 CN CN202022504138.9U patent/CN213496728U/en active Active
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