CN114012672B - Hand-held electric tool - Google Patents
Hand-held electric tool Download PDFInfo
- Publication number
- CN114012672B CN114012672B CN202111321049.3A CN202111321049A CN114012672B CN 114012672 B CN114012672 B CN 114012672B CN 202111321049 A CN202111321049 A CN 202111321049A CN 114012672 B CN114012672 B CN 114012672B
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- electromagnet
- electric hammer
- matched
- piston
- piston cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention discloses a handheld electric tool, which comprises an electric hammer shell, a piston cylinder, a drill bit, a swinging ring and a handle, wherein a movable electromagnet and a magnetic attraction block matched with the electromagnet are arranged in the piston cylinder, a first spring is arranged between the electromagnet and the magnetic attraction block, a sliding rheostat which is connected with the electromagnet and can adjust the loop current of the electromagnet is arranged on the electric hammer shell, a gravity slip ring and an arc-shaped rod matched with the gravity slip ring and used for detecting the horizontal state of the electric hammer are arranged on the sliding rheostat, and the device is used for adjusting the hammering force of the drill bit according to the inclined state of the electric hammer.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a handheld electric tool.
Background
The electric hammer belongs to a hand-held electric tool and is an electric rotary hammer drill with a safety clutch and a pneumatic hammering mechanism. The electric hammer utilizes the principle of piston motion, compresses gas to impact a drill bit, does not need much strength of hands, can drill holes on hard materials such as concrete, bricks, stones and the like, is widely applied in home decoration industry generally, and is commonly used for drilling straight holes or inclined holes on floors, walls or ceilings; however, the user only needs to nudge the electric hammer when the electric hammer punches at the level and can accomplish punching with high efficiency, and when the drill bit slope upwards beats the inclined hole or punches on the ceiling perpendicularly, the user not only needs to nudge the drill bit and makes the drill bit depth increase to need overcome the gravity of electric hammer self, caused great burden for the user, also made the time of punching simultaneously prolong, efficiency of punching descends, labour greatly increased.
Disclosure of Invention
The invention provides a handheld electric tool aiming at the defects in the prior art.
In order to solve the technical problems, the invention is solved by the following technical scheme: a hand-held electric tool comprises an electric hammer shell, a piston cylinder, a drill bit, a swinging ring and a handle.
In the above-mentioned scheme, it is preferred, be equipped with mobilizable electro-magnet in the piston cylinder and inhale the piece with electro-magnet matched with magnetism, be equipped with first spring between first electro-magnet and the magnetism piece of inhaling, be equipped with the slip rheostat that links to each other and adjustable electro-magnet return current with first electro-magnet on the electric hammer casing, be equipped with the gravity sliding ring on the slip rheostat and cooperate with the gravity sliding ring and be used for detecting the arc pole of electric hammer horizontality, its beneficial effect lies in: the device capable of changing the volume of the inner cavity of the piston cylinder is provided, so that the impact force generated to a drill bit is changed through the change of the volume of the cylinder body after the piston cylinder slides.
In the above scheme, it is preferred, slide rheostat includes gravity sliding ring, arc pole, coil and support, the support is located on the electric hammer casing, be equipped with the contact piece that contacts with the coil on the gravity sliding ring, be equipped with the first wiring mouth and the second wiring mouth that link to each other with the electro-magnet on arc pole and the coil respectively, its beneficial effect lies in: a specific structure of a slide rheostat is provided, which can change the resistance according to the change of the horizontal position of an electric hammer, so that the magnetic force is changed by the change of the current of a first electromagnet.
In the above scheme, it is preferred, be equipped with mobilizable piece that hits in the piston cylinder, be equipped with on the piston cylinder and hit a matched with spacing ring, hit to be equipped with on the piece with piston cylinder matched with first piston, its beneficial effect lies in: the collision block is matched with the drill bit, so that gas in the piston cylinder is compressed when the collision block collides with the drill bit, and the gas in the piston cylinder generates reaction force on the drill bit after being compressed.
In the above scheme, it is preferred that swing ring one end is equipped with the first pendulum rod that links to each other with the piston cylinder for the drive piston cylinder slides, and the other end is equipped with the second pendulum rod, be equipped with the sliding pin on the second pendulum rod, be equipped with on the electric hammer casing with sliding pin matched with compression cylinder, be equipped with on the electric hammer casing with compression cylinder matched with slide hole, its beneficial effect lies in: a gas compressible compression cylinder is provided to allow the compression cylinder to slide in cooperation with the wobble ring.
In the above scheme, it is preferred, be equipped with mobilizable second piston in the sliding hole, be equipped with the response piece on the second piston, be equipped with on the electric hammer casing with response piece matched with second electro-magnet, be equipped with the second spring between response piece and the electric hammer casing, its beneficial effect lies in: a secondary piston is provided for cooperation with the compression cylinder such that compressed air is generated upon cooperation of the secondary piston with the compression cylinder.
In the above scheme, it is preferred, be equipped with the venthole on the compression cylinder, be equipped with the gasbag that links to each other with the venthole on the handle, it links to each other through the trachea between gasbag and venthole, and its beneficial effect lies in: an air bag is provided in connection with a compression cylinder to allow compressed air to enter the air bag.
In the above scheme, it is preferred, the support includes first mounting panel and second mounting panel, be equipped with on the second mounting panel with gravity sliding ring matched with switch, the switch passes through the cable and links to each other with the second electro-magnet, and its beneficial effect lies in: a triggering device of the second piston is provided, so that the second piston is matched with the second compression cylinder to generate compressed air after the switch is triggered.
The invention has the beneficial effects that: the invention provides a device for adjusting the hammering force of a drill bit according to the inclination state of an electric hammer, so that the hammering force can be improved when the electric hammer upwards punches, the punching efficiency is improved, the holding time of a user during punching is reduced, and the labor force of the user is saved.
Drawings
Fig. 1 is a schematic front view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic view of the sliding varistor of the present invention.
FIG. 4 is a schematic view of the wobble ring assembly of the present invention.
Fig. 5 is a schematic view of the structure of a piston cylinder of the invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and embodiments: referring to fig. 1 to 5, a handheld electric tool, specifically an electric hammer, includes an electric hammer housing 1, a piston cylinder 2, a drill bit 3, a swing ring 4 and a handle 5, the piston cylinder 2 is slidably disposed in the electric hammer housing 1, a right end of the piston cylinder 2 is matched with the swing ring 4, the swing ring 4 is provided with a first swing link 31 matched with the piston cylinder 2, the swing ring 4 is connected with a motor driving shaft through a gear, the motor drives the swing ring 4 to swing the first swing link 31, and then the first swing link 31 drives the piston cylinder 2 to horizontally slide.
A cylindrical cavity is arranged in the piston cylinder 2, a first electromagnet 6 is arranged at the bottom of the cylindrical cavity in a sliding mode, a Y-shaped sealing ring is arranged between the first electromagnet 6 and the wall of the cavity of the piston cylinder 2, and an air hole 101 is formed in the bottom of the right end of the piston cylinder 2; 2 middle parts of piston cylinder are equipped with and inhale piece 7 with 6 matched with magnetism of first electro-magnet, inhale piece 7 for the annular, inhale 7 middle parts of piece for the perforation promptly of magnetism, inhale 7 outer walls of piece of magnetism and set firmly on 2 cylindrical cavity inner walls of piston cylinder, inhale piece 7 and be close to 6 one sides of first electro-magnet and be equipped with the concave station, be equipped with first spring 8 on unsmooth, first spring 8 one end is located on unsmooth, and the other end leans on with 6 looks backs of first electro-magnet, 6 circular telegrams of first electro-magnet back produce suction, make first electro-magnet 6 inhale 7 one side slip compression first spring 8 of piece, after 6 current increase of first electro-magnet, magnetic force also increases, makes first spring 8 compressed by the limit, finally makes first electro-magnet 6 and inhale the laminating of piece 7 with magnetism.
The left end opening of the piston cylinder 2 is provided with a collision block 21 in a sliding manner, the collision block 21 is connected with a first piston 23 through a connecting rod 102, the first piston 23 is arranged in a cylindrical cavity of the piston cylinder 2 in a sliding manner, a sealing ring is arranged between the first piston 23 and the inner wall of the cavity, a limiting ring 22 matched with the first piston 23 is arranged in the piston cylinder 2, the limiting ring 22 is arranged at the left end opening of the piston cylinder 2 and is arranged on one side, close to the collision block 21, of the first piston 23, so that the first piston 23 cannot slide out of the piston cylinder 2 when sliding leftwards.
Be equipped with on the electric hammer casing 1 and link to each other and steerable slide rheostat 9 through the 6 electric currents of first electro-magnet with first electro-magnet 6, slide rheostat 9 includes support 13, support 13 level sets firmly in 1 top of electric hammer casing, support 13 both sides are equipped with first mounting panel 51 and second mounting panel 52, first mounting panel 51 and the preferred perpendicular setting of second mounting panel 52, be equipped with arc pole 11 between first mounting panel 51 and the second mounting panel 52, 11 one end of arc pole sets firmly on first mounting panel 51, and the other end is connected with second mounting panel 52 after the upper right indent is crooked, be equipped with the coil 12 that sets up with the same equidistance of 11 appearances of arc pole between first mounting panel 51 and the second mounting panel 52, coil 12 is the resistance circle.
The gravity slip ring 10 is arranged on the arc-shaped rod 11 in a sliding mode, the gravity slip ring 10 can slide along the arc-shaped rod 11 after the support 13 tilts clockwise, a contact piece 14 which is in contact with the coil 12 is arranged on the gravity slip ring 10, a first wiring port 15 is arranged on one side, close to the first mounting plate 51, of the arc-shaped rod 11, a second wiring port 16 is fixedly arranged on one side, close to the second mounting plate 52, of the coil 12, the first electromagnet 6 is connected with a power supply, the first wiring port 15 and the second wiring port 16 in series through a cable, current flows into the first wiring port 15 through the slide rheostat 9, flows out of the coil between the gravity slip ring 10 and the contact piece 14 and the second mounting plate 52 from the second wiring port 16 to a loop, namely when the electric hammer tilts clockwise upwards, the gravity slip ring 10 slides to one side, the number of turns of the current passing through the coil 12 is reduced, the resistance in the loop is reduced, and the loop current is increased when the voltage is unchanged, so that the magnetic force of the first electromagnet 6 is increased.
One side of the swing ring 4 is connected with the piston cylinder 2 through a first swing rod 31 to enable the piston cylinder 2 to transversely slide, the other side of the swing ring is fixedly provided with a second swing rod 32 which has the same shape as the first swing rod 31 in a mirror image mode, a sliding hole 35 is arranged below the electric hammer shell 1, a compression cylinder 34 is arranged in the sliding hole 35 in a sliding mode, one side of the compression cylinder 34 is provided with an opening, a cylindrical inner cavity is formed in the compression cylinder 34, the opening side of the compression cylinder 34 is arranged in the sliding hole 35, the closed side of the compression cylinder is connected with the second swing rod 32, a sliding pin 33 is arranged on the closed side in a rotating mode, the second swing rod 32 penetrates through the sliding pin 33 in a sliding mode, and when the swing ring 3 swings, the second swing rod 32 is driven to swing, so that the compression cylinder 34 slides in the sliding hole 35.
Slide in the sliding hole 35 and be equipped with the second piston 36 with compression cylinder 34 inner chamber matched with, be equipped with connecting rod 103 on the second piston 36, connecting rod 103 sets firmly induction block 37 after wearing to establish sliding hole 35 bottom casing, electric hammer casing 1 outer wall is equipped with the second electro-magnet 38 with induction block 37 matched with, second electro-magnet 38 is annular magnet, annular hole bottom and the combination department of electric hammer casing 1 outer wall are equipped with second spring 39, on connecting rod 103 is located to second spring 39 cover, both ends are pushed up respectively and are leaned on electric hammer casing 1 outer wall and induction block 37, and when second electro-magnet 38 is not circular telegram, compression cylinder 34 does not contact with second piston 36 when sliding, and when second electro-magnet 38 circular telegram, induction block 37 and second electro-magnet 38 actuation, second piston 36 slides to the left, and second piston 36 compresses the gas in the compression cylinder 34 when sliding back and second piston 36 cooperation.
The second mounting plate 52 is provided with a switch 53 matched with the gravity slip ring 10, and the switch 53 is connected with the second electromagnet 38 through a cable, that is, when the gravity slip ring 10 slides to be in contact with the switch 53 on the second mounting plate 52, the second electromagnet 38 is electrified.
An air outlet 41 is formed in one side, close to the closed side, of the compression cylinder 34, the air outlet 41 is communicated with the inner cavity of the compression cylinder 34, an air bag 42 is fixedly arranged on the outer side wall of the handle 5, and the upper portion of the air bag 42 is connected with the air outlet 41 through an air pipe 43.
A method of using a hand held power tool as described above: when the electric hammer drill bit inclines upwards clockwise, the gravity slip ring 10 slides from one side of the first mounting plate 51 to one side of the second mounting plate 52 along the arc-shaped rod 11, at the moment, the number of turns of a loop of the first electromagnet 6 through the coil 12 is reduced, the voltage is unchanged, the loop current is increased, the magnetic force of the first electromagnet 6 is increased, the first electromagnet 6 slides leftwards to reduce the effective volume of the piston cylinder 2, the gas pressure in the piston cylinder 2 is increased, the reaction force of the collision block 21 impacting the drill bit 3 after the piston cylinder 2 slides at the moment is increased, namely, the collision force borne by the drill bit 3 is increased, and the drilling depth efficiency is improved; when a hole in a ceiling is drilled, the handle 5 usually needs to be abutted by a user's shoulder, and the impact on the shoulder is large, at this time, the gravity slip ring 10 triggers the switch 53 to electrify the second electromagnet 38, the second electromagnet 38 is electrified to be attracted to the induction block 37, the second piston 36 slides leftwards, the second piston 36 compresses gas in the compression cylinder 34 when the compression cylinder 34 slides and is matched with the second piston 36, the gas in the compression cylinder 34 is filled into the air bag 42 through the gas outlet 41, the air bag 42 is inflated to expand, the stress on the shoulder is relieved, and the damage to the shoulder of the user is reduced.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a hand-held type electric tool, includes electric hammer casing (1), piston cylinder (2), drill bit (3), swing ring (4) and handle (5), its characterized in that: a movable first electromagnet (6) and a magnetic suction block (7) matched with the first electromagnet (6) are arranged in the piston cylinder (2), a first spring (8) is arranged between the first electromagnet (6) and the magnetic suction block (7), a sliding rheostat (9) which is connected with the first electromagnet (6) and can adjust the loop current of the first electromagnet (6) is arranged on the electric hammer shell (1), and a gravity slip ring (10) and an arc-shaped rod (11) which is matched with the gravity slip ring (10) and is used for detecting the horizontal state of the electric hammer are arranged on the sliding rheostat (9);
the sliding rheostat (9) comprises a gravity slip ring (10), an arc-shaped rod (11), a coil (12) and a support (13), the support (13) is arranged on the electric hammer shell (1), a contact piece (14) which is in contact with the coil (12) is arranged on the gravity slip ring (10), and a first wiring port (15) and a second wiring port (16) which are connected with the first electromagnet (6) are respectively arranged on the arc-shaped rod (11) and the coil (12);
a second swing rod (32) is arranged at one end of the swing ring (4), a sliding pin (33) is arranged on the second swing rod (32), a compression cylinder (34) matched with the sliding pin (33) is arranged on the electric hammer shell (1), and a sliding hole (35) matched with the compression cylinder (34) is arranged on the electric hammer shell (1);
a movable second piston (36) is arranged in the sliding hole (35), an induction block (37) is arranged on the second piston (36), a second electromagnet (38) matched with the induction block (37) is arranged on the electric hammer shell (1), and a second spring (39) is arranged between the induction block (37) and the electric hammer shell (1);
the compression cylinder (34) is provided with an air outlet (41), the handle (5) is provided with an air bag (42) connected with the air outlet (41), and the air bag (42) is connected with the air outlet (41) through an air pipe (43);
the support (13) comprises a first mounting plate (51) and a second mounting plate (52), a switch (53) matched with the gravity slip ring (10) is arranged on the second mounting plate (52), and the switch (53) is connected with the second electromagnet (38) through a cable.
2. A hand held power tool according to claim 1, wherein: the movable collision block (21) is arranged in the piston cylinder (2), the piston cylinder (2) is provided with a limiting ring (22) matched with the collision block (21), and the collision block (21) is provided with a first piston (23) matched with the piston cylinder (2).
3. A hand held power tool according to claim 2, wherein: and the other end of the swinging ring (4) is provided with a first swinging rod (31) connected with the piston cylinder (2) and used for driving the piston cylinder (2) to slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321049.3A CN114012672B (en) | 2021-11-09 | 2021-11-09 | Hand-held electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321049.3A CN114012672B (en) | 2021-11-09 | 2021-11-09 | Hand-held electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114012672A CN114012672A (en) | 2022-02-08 |
| CN114012672B true CN114012672B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111321049.3A Active CN114012672B (en) | 2021-11-09 | 2021-11-09 | Hand-held electric tool |
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| CN (1) | CN114012672B (en) |
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| CN114012672A (en) | 2022-02-08 |
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