CN212761323U - Hole digger convenient to change trompil cover - Google Patents
Hole digger convenient to change trompil cover Download PDFInfo
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- CN212761323U CN212761323U CN202021659024.5U CN202021659024U CN212761323U CN 212761323 U CN212761323 U CN 212761323U CN 202021659024 U CN202021659024 U CN 202021659024U CN 212761323 U CN212761323 U CN 212761323U
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- hole
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- connecting rod
- female part
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Abstract
The utility model discloses a hole digger convenient to change trompil cover, including trompil cover, connecting rod, connection son spare, connection mother spare, elastic ring, lock position spheroid, sliding sleeve and seal the cover, the hole digger of this application, convenient and fast when changing the trompil cover is to trompil cover and connecting rod not damaged.
Description
Technical Field
The utility model relates to a hole digger technical field, concretely relates to hole digger convenient to change trompil cover.
Background
The hole cutter is also called hole cutter or hole saw, which is a special circular saw for cutting circular holes in modern industry or engineering, is installed on electric tools such as hand electric drill, impact drill, rocker drill, etc., and is a common device for drilling holes.
The connecting device of current hole digger is single trompil cover of single connecting rod adaptation for the majority, uses the mode that the screw thread adds the bolt to link into an integrated entity trompil cover and connecting rod, and the connecting rod is when needing to change other size trompil covers, need unscrew the connecting rod and twist on the trompil cover that needs to use again, and the dismouting is extremely inconvenient like this, wastes time and energy, often dismantles moreover and makes the screw thread inefficacy easily, causes trompil cover or connecting rod to scrap.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a hole digger convenient to change trompil cover to solve the inconvenient problem of connecting rod and trompil cover dismouting.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a hole digger convenient for replacing a hole digger comprises a hole digger, a connecting rod, a connecting sub-piece, a connecting mother piece, an elastic ring, a locking ball body, a sliding sleeve and a sealing sleeve; one end of the perforated cover is an open end, cutting teeth are uniformly distributed on the circumferential direction of the end surface of the open end, a mounting hole is arranged on the central axis of the other end of the perforated cover in the upward direction, an inner spiral column surrounding the mounting hole is arranged in the perforated cover,
the connecting sub-piece is of a prismatic structure, one end of the connecting sub-piece is fixedly connected with one end of the connecting rod, the other side of the connecting sub-piece is a free end, and a locking ring groove is formed in the circumferential direction of the side wall of the connecting sub-piece;
the connecting female part is of a cylindrical structure, one end of the connecting female part is axially provided with a prismatic hole which is in inserting fit connection with the connecting male part, the other end of the connecting female part axially extends to form an outer cylindrical screw which is in threaded fit connection with the inner cylindrical screw, the circumferential direction of the outer wall of the connecting female part is provided with at least one locking through hole which is communicated with the prismatic hole, a locking ball which can locally and movably extend into a locking ring groove is arranged in the locking through hole, and the outer wall of the connecting female part is provided with a limiting ring which is positioned between the locking through hole and the outer cylindrical screw;
the movable sliding sleeve is sleeved on the connecting female part, one side in the sliding sleeve is provided with a clamping step, the clamping step is positioned between the limiting ring and the connecting rod, and the other side in the sliding sleeve is provided with a sealing sleeve;
the elastic ring is sleeved on the connecting female part and clamped between the sealing sleeve and the limiting ring;
when the sliding sleeve is pushed to be close to the connecting rod, the elastic ring is compressed, and the locking ball body is separated from the limit of the clamping step and can move up and down in the axial direction of the locking through hole; when the sliding sleeve loses the driving force, the elastic ring returns, and the screens step supports and presses the position-locking spheroid and makes the position-locking spheroid local locking in the position-locking annular groove.
Based on the above, when the hole cover needs to be disassembled, one hand grasps the connecting rod, the other hand pushes the sliding sleeve rightwards, the sliding sleeve drives the elastic ring to compress in the moving process, meanwhile, the clamping step and the locking ball body move relatively, the locking ball body loses the limitation of the clamping step, the connecting rod is pushed at the moment, the locking ball body moves axially along the locking through hole and breaks away from the limitation of the locking ring groove, the connection sub-element and the connection main element are separated from each other, then the hole cover can be replaced, and when the hole cover is installed, the method is similar to the method for disassembling the hole cover.
The utility model provides a convenient and fast when the trompil cover is changed to the hole digger, to trompil cover and connecting rod not damaged.
As an improved technical scheme, the drilling tool further comprises a positioning drill, the positioning drill is arranged in the central axial direction of the hole opening cover, and the free end of the connecting sub-piece is detachably connected with the positioning drill.
As an improved technical scheme, the end part of the connecting piece, which is far away from the connecting rod, is provided with a jack in the axial direction, the outer wall of the connecting piece is provided with a first threaded hole communicated with the jack in the radial direction, the outer wall of the connecting end of the positioning drill is provided with a second threaded hole, and the connecting end of the positioning drill is inserted into the jack and is detachably connected with the connecting piece through a screw penetrating through the first threaded hole and the screw-in second threaded hole.
As an improved technical scheme, the connecting female member is uniformly provided with three locking through holes, and any locking through hole is communicated with the circumferential center of one side wall of the prismatic hole.
As an improved technical scheme, the connecting sub-piece is of a regular hexagonal prism structure, and the prism holes are regular hexagonal holes.
As an improved technical scheme, the connecting female member is uniformly provided with three locking through holes, and any locking through hole is communicated with the circumferential center of one side wall of the prismatic hole.
As an improved technical scheme, the mounting hole is a counter bore, the partial parts of the sliding sleeve and the connecting female member extend into a large-diameter hole section of the mounting hole, and a small-diameter hole section of the mounting hole is a threaded hole which has the same diameter as a hole of the inner stud and is connected with the hole of the inner stud.
As an improved technical scheme, the large-diameter hole section of the mounting hole is in sliding fit with the sliding sleeve.
As an improved technical scheme, the connecting sub-piece is integrally connected with the connecting rod. .
As an improved technical scheme, the connecting rod is a regular hexagonal prism.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic perspective view of a hole opener for facilitating replacement of a hole opening cover according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a perspective view of the female connection member, the male connection member and the connecting rod of FIG. 1;
fig. 4 is an internal schematic view (locked state) of the hole cutter of fig. 2;
fig. 5 is an internal schematic view (unlocked state) of the hole cutter of fig. 2;
reference numerals: the opening cover 1, the mounting hole 101, the inner screw column 102, the connecting rod 2, the connecting sub-piece 3, the locking ring groove 301, the first threaded hole 302, the jack 303, the connecting female piece 4, the prismatic hole 401, the outer screw column 402, the locking through hole 403, the limiting ring 404, the elastic ring 5, the locking sphere 6, the sliding sleeve 7, the clamping step 701, the sealing sleeve 8, the positioning drill 9 and the screw 10.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, numerous specific details are set forth, however, it can be appreciated that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Referring to fig. 1 to 5, the present embodiment discloses a hole opener convenient for replacing a hole-opening cover, which includes a hole-opening cover 1, a connecting rod 2, a connecting sub-component 3, a connecting main component 4, an elastic ring 5, a locking ball 6, a sliding sleeve 7 and a sealing sleeve 8.
As shown in fig. 4, the left end of the perforated cover 1 is an open end, cutting teeth are uniformly distributed on the circumferential direction of the end surface of the open end, a mounting hole 101 is formed in the central axis of the right end of the perforated cover 1 in the axial direction, and an inner stud 102 surrounding the mounting hole 101 is arranged in the perforated cover 1.
The core of the application is that:
as shown in fig. 3, the connecting sub-member 3 is a prism structure, the right end of the connecting sub-member 3 is fixedly connected with the left end of the connecting rod 2, the right end of the connecting sub-member 3 is a free end, and a locking ring groove 301 is formed in the circumferential direction of the side wall of the connecting sub-member 3;
the connecting female part 4 is of a columnar structure, a prismatic hole 401 which is in inserting connection with the connecting male part 3 is formed in the axial direction of the right end of the connecting female part 4, and at least one locking through hole 403 which is communicated with the prismatic hole 401 is formed in the circumferential direction of the outer wall of the connecting female part 4;
as shown in fig. 4, a locking ball 6 capable of partially and movably extending into the locking ring groove 301 is disposed in the locking through hole 403, and a limiting ring 404 disposed between the locking through hole 403 and the outer bolt 402 is disposed on the outer wall of the connecting female member 4; the movable sleeve 7 is movably sleeved on the connecting female part 4, the right side in the sleeve 7 is provided with a clamping step 701, the clamping step 701 is positioned between the limiting ring 404 and the connecting rod 2, and the left side in the sleeve 7 is provided with a sealing sleeve 8;
the elastic ring 5 is sleeved on the connecting female part 4 and clamped between the sealing sleeve 8 and the limiting ring 404; when the sliding sleeve 7 is pushed to be close to the connecting rod 2, the elastic ring 5 is compressed, and the locking ball body 6 is separated from the limit of the locking step 701 and can move up and down in the axial direction of the locking through hole 403; when the sliding sleeve 7 loses the driving force, the elastic ring 5 returns, and the blocking step 701 presses the locking sphere 6 and enables the locking sphere 6 to be partially locked in the locking ring groove 301.
Based on the above, when the escutcheon 1 needs to be disassembled, one hand grasps the connecting rod 2, the other hand pushes the sliding sleeve 7 rightward, the sliding sleeve 7 drives the elastic ring 5 to compress in the moving process, meanwhile, the clamping step 701 and the locking ball 6 move relatively, the locking ball 6 loses the limit of the clamping step 701, the connecting rod 2 is pushed at the moment, the locking ball 6 moves axially along the locking through hole 403 and breaks away from the limit of the locking ring groove 301, the connecting sub-element 3 and the connecting main element 4 are separated from each other, the escutcheon 1 can be replaced later, when the escutcheon 1 is installed, the method is similar to the method for disassembling the escutcheon 1, and no further description is given here.
The hole digger that this embodiment provided, convenient and fast when changing trompil cover 1, to trompil cover 1 and connecting rod 2 not damaged.
In this embodiment, the connecting sub-piece 3 is a regular hexagonal prism structure, the prism hole 401 is a regular hexagonal hole, and for improving the stability of connecting the connecting sub-piece 3 and the connecting mother piece 4, preferably, the connecting mother piece 4 is uniformly provided with three locking through holes 403, any locking through hole 403 is communicated with the circumferential center of one side wall of the prism hole 401, each locking through hole 403 is internally provided with a locking sphere 6, the connecting sub-piece 3 is locked by the three locking spheres 6, and the connecting stability is better.
As shown in fig. 4, the present embodiment provides a hole cutter to which a pilot bit 9 is also attached.
Specifically, the positioning drill 9 is arranged on the central axial direction of the perforated cover 1, and the left end of the connecting sub-element 3 is detachably connected with the positioning drill 9.
In this embodiment, the right end of the connector 3 is axially provided with a jack 303, the outer wall of the connector 3 is radially provided with a first threaded hole 302 communicated with the jack 303, the outer wall of the right end of the positioning drill 9 is provided with a second threaded hole, the left end of the positioning drill 9 is inserted into the jack 303 and is detachably connected with the connector 3 through a screw 10 penetrating through the first threaded hole 302 and screwed into the second threaded hole, the connection mode is simple,
in this embodiment, for the convenience of assembly, the connecting sub-part 3 and the connecting rod 2 are processed into an integral structure, and the connecting rod 2 is a regular hexagonal prism and is convenient to be connected with a drilling machine.
In this embodiment, the elastic ring 5 is preferably a compression spring.
In this embodiment, the left end of the female connection member 4 axially extends to form an outer stud 402 in threaded engagement with the inner stud 102, and the female connection member 4 is detachably connected to the escutcheon 1 by engaging the outer stud 402 with the inner stud 102.
In this embodiment, the mounting hole 101 is a counterbore, a part of the sliding sleeve 7 and the connecting female member 4 extends into a large-diameter hole section of the mounting hole 101, and a small-diameter hole section of the mounting hole 101 is a threaded hole which has the same diameter as and is connected with a hole of the inner bolt 102. The large-diameter hole section of the mounting hole 101 is in sliding fit with the sliding sleeve 7. When the mounting hole 101 is set to be a counter bore, the left end of the sliding sleeve 7 is always located in the mounting hole 101 in the sliding process, so that impurities are not easy to enter the mounting hole 101, and the mounting hole is more attractive.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. Hole digger convenient to change trompil cover, including trompil cover (1) and connecting rod (2), trompil cover (1) one end is the open end, the equipartition has the incisor tooth in the circumference of open end terminal surface, mounting hole (101) have upwards been seted up to the center pin of the trompil cover (1) other end, establish in trompil cover (1) and locate interior bolt (102) around mounting hole (101), its characterized in that: the sealing device also comprises a connecting sub-element (3), a connecting mother element (4), an elastic ring (5), a locking ball body (6), a sliding sleeve (7) and a sealing sleeve (8);
the connecting sub-piece (3) is of a prism structure, one end of the connecting sub-piece (3) is fixedly connected with one end of the connecting rod (2), the other side of the connecting sub-piece (3) is a free end, and a locking ring groove (301) is formed in the circumferential direction of the side wall of the connecting sub-piece (3);
the connecting female part (4) is of a cylindrical structure, one end of the connecting female part (4) is axially provided with a prismatic hole (401) which is inserted and matched with the connecting sub-part (3) in connection, the other end of the connecting female part (4) axially extends to form an outer stud (402) which is in threaded fit connection with the inner stud (102), the circumferential direction of the outer wall of the connecting female part (4) is provided with at least one locking through hole (403) which is communicated with the prismatic hole (401), a locking ball body (6) which can locally and movably extend into the locking ring groove (301) is arranged in the locking through hole (403), and the outer wall of the connecting female part (4) is provided with a limiting ring (404) which is positioned between the locking through hole (403) and the outer stud (402);
the movable sleeve (7) is movably sleeved on the connecting female part (4), one side in the sleeve (7) is provided with a clamping step (701), the clamping step (701) is positioned between the limiting ring (404) and the connecting rod (2), and the other side in the sleeve (7) is provided with a sealing sleeve (8);
the elastic ring (5) is sleeved on the connecting female part (4) and clamped between the sealing sleeve (8) and the limiting ring (404);
when the sliding sleeve (7) is pushed to be close to the connecting rod (2), the elastic ring (5) is compressed, and the locking ball body (6) is separated from the limit of the locking step (701) and can move up and down in the axial direction of the locking through hole (403); when sliding sleeve (7) lost the driving force, elasticity ring (5) return, screens step (701) support and press the position locking spheroid (6) and make position locking spheroid (6) local locking in position locking annular groove (301).
2. The hole cutter as claimed in claim 1, wherein: the drilling tool is characterized by further comprising a positioning drill (9), wherein the positioning drill (9) is arranged on the central axis of the drilling cover (1), and the free end of the connecting sub-piece (3) is detachably connected with the positioning drill (9).
3. The hole cutter as claimed in claim 2, wherein: jack (303) have been seted up in the tip axial that connecting rod (2) was kept away from in connector piece (3), first screw hole (302) with jack (303) intercommunication are radially seted up to the outer wall of connector piece (3), the second screw hole has been seted up to the outer wall of location brill (9) link, the link of location brill (9) is inserted and is located jack (303) and can be dismantled with connector piece (3) through wearing to establish screw (10) of first screw hole (302), screw in second screw hole and be connected.
4. The hole cutter as claimed in claim 3, wherein: the connecting sub-piece (3) is of a regular hexagonal prism structure, and the prism hole (401) is a regular hexagonal hole.
5. The hole cutter as claimed in claim 4, wherein: the connecting female part (4) is uniformly provided with three locking through holes (403), and any locking through hole (403) is communicated with the circumferential center of one side wall of the prism hole (401).
6. The hole cutter as claimed in claim 5, wherein: the mounting hole (101) is a counter bore, the partial parts of the sliding sleeve (7) and the connecting female part (4) extend into the large-diameter hole section of the mounting hole (101), and the small-diameter hole section of the mounting hole (101) is a threaded hole which is in the same diameter as the hole of the inner stud (102) and is connected with the hole.
7. The hole cutter as claimed in claim 6, wherein: the large-diameter hole section of the mounting hole (101) is in sliding fit with the sliding sleeve (7).
8. The hole cutter as claimed in claim 1, wherein: the elastic ring (5) is a compression spring.
9. The hole cutter as claimed in claim 1, wherein: the connecting sub-piece (3) is integrally connected with the connecting rod (2).
10. The hole cutter as claimed in claim 1, wherein: the connecting rod (2) is a regular hexagonal prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021659024.5U CN212761323U (en) | 2020-08-11 | 2020-08-11 | Hole digger convenient to change trompil cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021659024.5U CN212761323U (en) | 2020-08-11 | 2020-08-11 | Hole digger convenient to change trompil cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212761323U true CN212761323U (en) | 2021-03-23 |
Family
ID=75051452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021659024.5U Active CN212761323U (en) | 2020-08-11 | 2020-08-11 | Hole digger convenient to change trompil cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212761323U (en) |
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2020
- 2020-08-11 CN CN202021659024.5U patent/CN212761323U/en active Active
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