CN211807038U

CN211807038U - Handheld grooving machine

Info

Publication number: CN211807038U
Application number: CN202020058430.XU
Authority: CN
Inventors: 翁明有
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-10-30
Anticipated expiration: 2030-01-10

Abstract

The utility model relates to a hand-held type groover, which comprises a bod, the head shell, the cutting saw bit, the saw bit pivot, fixed cover of saw bit and saw bit activity cover, be equipped with the motor in the fuselage, the head shell sets up at the fuselage front end, saw bit pivot one end stretches into in the head shell and is connected with the motor through drive mechanism, the saw bit pivot other end exposes in the head shell and installs the cutting saw bit, the fixed cover of saw bit is fixed at head shell one side and shroud in the rear portion upside of cutting saw bit, the saw bit activity covers the anterior upside in the cutting saw bit, the rear end of saw bit activity cover passes through the articulated shaft with the front end of the fixed cover of saw bit and articulates, the front end of saw bit activity cover just is equipped with the elastic separation blade for the free end, still include a spacing extension spring, spacing extension spring one end. The utility model discloses can go up the upset with saw bit movable cover convenient and reliable, and the cutting saw bit is dismantled and is changed and the fixed cover of saw bit and saw bit movable cover are dismantled the clearance very portably, can realize cooling and dirt-proof purpose simultaneously.

Description

Handheld grooving machine

Technical Field

The utility model relates to a groover field especially relates to a hand-held type groover.

Background

At present, in the decoration process in offices and homes, circuit wiring, water gas pipeline laying, television and communication line wiring and the like which are required to be carried out are generally slotted on the ground or a wall by adopting a handheld slotting machine, and the handheld slotting machine not only has high slotting efficiency, but also is light and small, so the handheld slotting machine is popular with users.

For example, chinese utility model patent CN201420087776.7 discloses a wall groover without cutting dead angle. The cutting saw blade is rotatably arranged at the foremost end of the head shell, and the machine body drives the cutting saw blade to rotate through a speed change device arranged in the head shell; the head shell is provided with a saw blade protection groove, the movable shield is rotatably arranged on the head shell through a torsional spring and covers the cutting saw blade, and the movable shield can be accommodated in the saw blade protection groove of the head shell; the head shell is provided with an elastic lock pin, and the movable protective cover is provided with a lock hole matched with the elastic lock pin. The wall grooving machine has the following disadvantages in the using process:

firstly, when slotting the counter angle position, its movable guard shield can be accomodate, nevertheless need extract elastic lock pin in the first lockhole on the movable guard shield earlier when accomodating, then accomodate the movable guard shield in the saw bit guard slot of head shell, in inserting the second lockhole on the movable guard shield with elastic lock pin again, consequently slightly show loaded down with trivial details in the operation, and it is higher to the accuracy requirement of complex between elastic lock pin and the lockhole, otherwise cause the elastic lock pin can't insert in the lockhole then can't realize spacing bad phenomenon easily, thereby the reliability is relatively poor.

Secondly, when the cutting saw blade needs to be replaced, the cutting saw blade can be detached only after the head shell and the movable protective cover are detached, so that the cutting saw blade is not easy to detach and replace.

Thirdly, the disassembly of the head shell and the movable protective cover is inconvenient, so the disassembly and the cleaning of the head shell and the movable protective cover are also not facilitated.

Fourthly, a water spray cooling and dust removing structure is not arranged near the cutting saw blade, so that on one hand, the cutting saw blade is easy to have high-temperature blade breakage phenomenon due to the fact that the cutting saw blade cannot be cooled in time during slotting operation, the service life is influenced, and on the other hand, dust flies upward during slotting operation, and the working environment is influenced.

For this reason, improvements have yet to be made by the relevant practitioner.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide one kind can be with the saw bit activity cover convenient and reliable operation of turning up, and the cutting saw bit is dismantled and is changed and the fixed cover of saw bit and the saw bit activity cover are dismantled the clearance and all very simple and convenient, can realize the cooling and the dustproof hand-held type groover of purpose simultaneously.

The purpose of the utility model is realized through the following technical scheme:

a hand-held grooving machine comprises a machine body, a head shell, a cutting saw blade, a saw blade rotating shaft, a saw blade fixing cover and a saw blade movable cover, wherein a motor is arranged in the machine body, the head shell is arranged at the front end of the machine body, one end of the saw blade rotating shaft extends into the head shell and is connected with the motor through a transmission mechanism, the other end of the saw blade rotating shaft is exposed out of the head shell and is provided with the cutting saw blade, the saw blade fixing cover is fixed at one side of the head shell and covers the rear upside of the cutting saw blade, the saw blade movable cover covers the front upside of the cutting saw blade, the rear end of the saw blade movable cover is hinged with the front end of the saw blade fixing cover through a hinged shaft, the front end of the saw blade movable cover is a free end and is provided with an elastic catch, the saw blade movable cover can upwards overturn relative to the saw blade fixing, one end of the limiting tension spring is connected with the saw blade fixing cover, and the other end of the limiting tension spring is connected with the saw blade movable cover.

Furthermore, the elastic catch is in a front convex arc shape, the upper end of the elastic catch is fixedly connected with the front end of the saw blade movable cover through a screw, and the lower end of the elastic catch is longer than the front end of the saw blade movable cover by a certain distance.

Furthermore, the side walls of the saw blade fixing cover and the saw blade moving cover, which are opposite to the head shell, only shield the outer edge part of the cutting saw blade, so that the cutting saw blade can be detached and replaced from the saw blade rotating shaft under the condition that the saw blade fixing cover and the saw blade moving cover are not detached.

Furthermore, the saw blade movable cover comprises two side walls and an upper wall, the rear ends of the two side walls are sleeved on the two sides of the front end of the saw blade fixing cover and hinged with the front end of the saw blade fixing cover through the hinge shaft, and the lower surface of the rear end of the upper wall is pressed against the upper surface of the front end of the saw blade fixing cover.

Furthermore, the saw blade fixing cover comprises a first cover plate arranged facing the head shell and a second cover plate arranged back to the head shell, and the second cover plate is sleeved in the first cover plate and fixedly connected with the first cover plate.

Furthermore, the first cover plate comprises a fan-shaped side wall and an arc-shaped upper wall, the second cover plate comprises an arc-shaped side wall and an arc-shaped upper edge, the arc-shaped upper edge of the second cover plate is abutted to the lower surface of the arc-shaped upper wall of the first cover plate and the inner side surface of the fan-shaped side wall of the first cover plate, a saw blade protection groove is formed between the arc-shaped side wall of the second cover plate and the upper end of the fan-shaped side wall of the first cover plate, a through hole for the saw blade rotating shaft to penetrate through is formed in the axis of the fan-shaped side wall of the first cover plate, a large distance is reserved between the lower edge of the arc-shaped side wall of the second cover plate and the saw blade rotating shaft, and therefore a saw blade dismounting hole for dismounting the cutting saw blade is formed on the lower side of the arc.

Furthermore, a first fixing screw is arranged on the saw blade fixing cover, a second fixing screw is arranged at the front part of the saw blade movable cover, one end of the limiting tension spring is hooked on the first fixing screw, and the other end of the limiting tension spring is hooked on the second fixing screw.

Furthermore, a shaft sleeve is convexly arranged on one side, facing the cutting saw blade, of the head shell, the saw blade rotating shaft penetrates through the shaft sleeve, a semicircular clamping sleeve is convexly arranged on one side, facing the head shell, of the saw blade fixing cover, and the semicircular clamping sleeve is externally sleeved on the shaft sleeve and is locked and fixed through a clamping hoop.

Furthermore, the hoop comprises an annular hoop body with an opening, a pair of locking arms arranged on two sides of the opening end of the annular hoop body and a locking bolt used for locking the pair of locking arms together, and the annular hoop body is sleeved outside the semi-circular annular clamping sleeve and welded with the semi-circular annular clamping sleeve.

Furthermore, one side of the saw blade fixing cover back to the head shell is provided with a water spray pipe which is obliquely arranged, the upper end of the water spray pipe is tightly pressed and fixed on the saw blade fixing cover through a pressing block, and the lower end of the water spray pipe faces to the outer edge of the lower end of the cutting saw blade.

Compared with the prior art, the utility model discloses following beneficial effect has:

first, the utility model discloses when needs carry out the fluting to the angle position, only need with the saw bit movable cover direct upwards overturn can, the saw bit movable cover after upwards overturning can keep can not topple over at this state under the effect of spacing extension spring moreover, consequently compare with the structure of accomodating of activity guard shield among the prior art, its simple structure not only, it is very convenient to operate and use, the reliability is high moreover.

Secondly, the utility model discloses when changing the cutting saw bit, need not to dismantle the fixed cover of saw bit and saw bit movable cover get off, only need loosen the locking nut in the cutting saw bit outside after, will cut the saw bit again and directly take out the change can, consequently the dismantlement of cutting saw bit is changed the operation very simple and convenient.

Furthermore, the utility model discloses the dismantlement clearance of fixed cover of saw bit and saw bit activity cover is also very convenient, only needs to unscrew the locking bolt on the clamp after, can together take off the clearance maintenance with fixed cover of saw bit and saw bit activity cover.

Finally, the utility model discloses be equipped with the spray pipe that a slope was arranged on the fixed cover of saw bit, the lower extreme of this spray pipe is towards the lower extreme outer fringe of cutting saw bit, consequently can cool off in real time the cutting edge part of the cutting saw bit in the grooving operation on the one hand, prevents that the cutting edge part from appearing disconnected sword phenomenon because of high temperature, improves life, and on the other hand also can prevent that the dust in the grooving operation from flying upward, realizes dust removal effect, improves operational environment.

Drawings

Fig. 1 is a front perspective view of the hand-held grooving machine of the present invention.

Fig. 2 is an exploded schematic view of the hand-held grooving machine of the present invention.

Fig. 3 is a right perspective view of the saw blade fixing cover and the saw blade moving cover of the present invention.

Fig. 4 is a left perspective view of the saw blade fixing cover and the saw blade moving cover of the present invention.

Fig. 5 is an exploded view of the saw blade fixing cover and the saw blade moving cover of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments shown in the drawings.

As shown in fig. 1 to 5, a hand-held type groover, including fuselage 1, head shell 2, cutting saw bit 3, saw bit pivot 4, the fixed cover of saw bit 5 and saw bit activity cover 6, be equipped with the motor in the fuselage 1, head shell 2 sets up at fuselage 1 front end, and 4 one ends of saw bit pivot are stretched into in head shell 2 and are connected with the motor through drive mechanism, and the 4 other ends of saw bit pivot expose in head shell 2 and install cutting saw bit 3. The transmission mechanism is a gear transmission mechanism, and when the slotting machine works, the motor drives the saw blade rotating shaft 4 and the cutting saw blade 3 thereon to rotate through the gear transmission mechanism, so as to perform slotting work.

Saw bit fixed cover 5 is fixed in 2 one sides of head shell and shroud in the rear portion upside of cutting saw bit 3, saw bit movable cover 6 shroud in the anterior upside of cutting saw bit 3, the rear end of saw bit movable cover 6 passes through articulated shaft 7 with the front end of saw bit fixed cover 5 and is articulated, the front end of saw bit movable cover 6 is the free end and is equipped with elastic catch 8, saw bit movable cover 6 can upwards overturn for saw bit fixed cover 5, still include a spacing extension spring 9, 9 one end of spacing extension spring is connected with saw bit fixed cover 5, the other end is connected with saw bit movable cover 6, make saw bit movable cover 6 can keep in this position and can not rock at will when being in down turning over or turning over the state with this. When the corner position of the wall or the ground needs to be grooved, the front part of the cutting saw blade 3 is exposed only by turning the saw blade movable cover 6 upwards by hands.

The elastic catch 8 is made of silicone, and thus has a certain elasticity, and is made in a forward convex arc shape to be adapted to the outer edge profile of the cutting blade 3. The upper end of the elastic catch 8 is fixedly connected with the front end of the saw blade movable cover 6 through a screw 10, and the lower end of the elastic catch 8 is longer than the front end of the saw blade movable cover 6 by a certain distance so as to increase the shielding area on the front side of the cutting saw blade 3.

The

side walls

501, 601 of the blade fixing cover 5 and the blade moving cover 6 facing away from the head housing 2 only shield the outer edge portion of the cutting blade 3, so that the cutting blade 3 can be detached and replaced from the blade rotating shaft 4 without detaching the blade fixing cover 5 and the blade moving cover 6. When the cutting saw blade 3 is detached and replaced, the cutting saw blade 3 is directly taken out and replaced after the locking nut 11 on the outer side of the cutting saw blade 3 is loosened.

The saw blade movable cover 6 comprises two

side walls

61 and 62 and an upper wall 63, the rear ends of the two

side walls

61 and 62 are sleeved on the two sides of the front end of the saw blade fixing cover 5 and hinged with the front end of the saw blade fixing cover 5 through a hinge shaft 7, and the lower surface of the rear end of the upper wall 63 is pressed against the upper surface of the front end of the saw blade fixing cover 5, so that the downward turning angle of the saw blade movable cover 6 is limited. When the saw blade movable cover 6 is turned upwards, the upturning angle can be limited by the abutting of the rear end surface of the upper wall 63 and the front end upper surface of the saw blade fixing cover 5.

The blade fixing cover 5 includes a first cover plate 51 disposed facing the head housing 2 and a second cover plate 52 disposed opposite to the head housing 2, and the second cover plate 52 is inserted into the first cover plate 51 and fixedly connected thereto. The first cover plate 51 comprises a fan-shaped side wall 511 and an arc-shaped upper wall 512, the second cover plate 52 comprises an arc-shaped side wall 521 and an arc-shaped upper edge 522, the arc-shaped upper edge 522 of the second cover plate 52 is abutted against the lower surface of the arc-shaped upper wall 512 of the first cover plate 51 and the inner side surface of the fan-shaped side wall 511 of the first cover plate 51, a blade protection groove is formed between the arc-shaped side wall 521 of the second cover plate 52 and the upper end of the fan-shaped side wall 511 of the first cover plate 51, a through hole 5110 for the blade rotating shaft 4 to penetrate through is arranged at the axial center of the fan-shaped side wall 511 of the first cover plate 51, a large distance is left between the lower edge of the arc-shaped side wall 521 of the second cover plate 52 and the blade rotating shaft 4, and a blade dismounting hole 12 for facilitating dismounting and mounting of the.

The saw blade fixing cover 5 is provided with a first fixing screw 13, the front part of the saw blade movable cover 6 is provided with a second fixing screw 14, one end of the limit tension spring 9 is hooked on the first fixing screw 13, and the other end of the limit tension spring is hooked on the second fixing screw 14.

A shaft sleeve 15 is convexly arranged on one side of the head shell 2 facing the cutting saw blade 3, the saw blade rotating shaft 4 penetrates through the shaft sleeve 15, a semicircular clamping sleeve 16 is convexly arranged on one side of the saw blade fixing cover 5 facing the head shell 2, and the semicircular clamping sleeve 16 is externally sleeved on the shaft sleeve 15 and is locked and fixed by a clamp 17.

The clamp 17 includes an annular body 171 with an opening, a pair of locking arms 172 disposed on both sides of the opening end of the annular body 171, and a locking bolt 173 for locking the pair of locking arms 172 together, and the annular body 171 is sleeved on the semi-circular annular jacket 16 and welded thereto.

One side of the saw blade fixing cover 5 back to the head shell 2 is provided with a water spraying pipe 18 which is obliquely arranged, the upper end of the water spraying pipe 18 is tightly pressed and fixed on the saw blade fixing cover 5 through a pressing block 19, and the lower end of the water spraying pipe 18 faces to the outer edge of the lower end of the cutting saw blade 3. The upper end of the water spray pipe 18 is communicated with an external water source or a water tank of the machine through a hose, so that water flow can be sprayed to the outer edge part of the cutting saw blade 3 through the water spray pipe 18 during grooving operation, and the purposes of cooling the blade part of the cutting saw blade 3 and preventing dust from flying during cutting are achieved. In addition, the position of the spray pipe 18 can be adjusted after the pressing block 19 is loosened, and then the distance between the lower end of the spray pipe 18 and the outer edge of the lower end of the cutting blade 3 can be adjusted.

The above mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention can not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still included in the scope of the present invention.

Claims

1. The utility model provides a hand-held type groover, includes fuselage, first shell, cutting saw bit, saw bit pivot, the fixed cover of saw bit and saw bit activity cover, be equipped with the motor in the fuselage, first shell sets up the fuselage front end, saw bit pivot one end stretches into in the first shell and through drive mechanism with the motor is connected, the saw bit pivot other end expose in first shell and install cutting saw bit, its characterized in that: the saw bit fixed cover is fixed first shell one side and shroud in the rear portion upside of cutting saw bit, saw bit activity cover shroud in the anterior upside of cutting saw bit, the rear end of saw bit activity cover with the front end of the fixed cover of saw bit is articulated through the articulated shaft, the front end of saw bit activity cover is the free end and is equipped with the elasticity separation blade, saw bit activity cover can for the fixed cover of saw bit upwards overturns, still includes a spacing extension spring, spacing extension spring one end with the fixed cover of saw bit is connected, the other end with the saw bit activity cover is connected.

2. A hand held grooving machine as claimed in claim 1 wherein: the elastic blocking piece is in a front convex arc shape, the upper end of the elastic blocking piece is fixedly connected with the front end of the saw blade movable cover through a screw, and the lower end of the elastic blocking piece is longer than the front end of the saw blade movable cover by a certain distance.

3. A hand held grooving machine as claimed in claim 1 wherein: the side walls of the saw blade fixing cover and the saw blade movable cover, which are back to the head shell, only shield the outer edge part of the cutting saw blade, so that the cutting saw blade can be detached and replaced from the saw blade rotating shaft under the condition that the saw blade fixing cover and the saw blade movable cover are not detached.

4. A hand held grooving machine as claimed in claim 1 wherein: the saw blade movable cover comprises two side walls and an upper wall, the rear ends of the two side walls are sleeved on the two sides of the front end of the saw blade fixing cover and hinged with the front end of the saw blade fixing cover through the hinge shaft, and the lower surface of the rear end of the upper wall is pressed against the upper surface of the front end of the saw blade fixing cover.

5. A hand held grooving machine as claimed in claim 1 wherein: the saw blade fixing cover comprises a first cover plate and a second cover plate, the first cover plate is arranged facing the head shell, the second cover plate is arranged back to the head shell, and the second cover plate is sleeved in the first cover plate and fixedly connected with the first cover plate.

6. A hand held grooving machine as claimed in claim 5 wherein: the saw blade assembly and disassembly device is characterized in that the first cover plate comprises a fan-shaped side wall and an arc-shaped upper wall, the second cover plate comprises an arc-shaped side wall and an arc-shaped upper edge, the arc-shaped upper edge of the second cover plate is abutted to the lower surface of the arc-shaped upper wall of the first cover plate and the inner side surface of the fan-shaped side wall of the first cover plate, a saw blade protection groove is formed between the arc-shaped side wall of the second cover plate and the upper end of the fan-shaped side wall of the first cover plate, a through hole for the saw blade rotating shaft to penetrate through is formed in the axis of the fan-shaped side wall of the first cover plate, a large distance is reserved between the lower edge of the arc-shaped side wall of the second cover plate and the saw blade rotating shaft, and a saw blade assembly and disassembly port for.

7. A hand held grooving machine as claimed in claim 1 wherein: the saw blade fixing cover is provided with a first fixing screw, the front part of the saw blade movable cover is provided with a second fixing screw, one end of the limiting tension spring is hooked on the first fixing screw, and the other end of the limiting tension spring is hooked on the second fixing screw.

8. A hand held grooving machine as claimed in claim 1 wherein: the cutting saw bit is characterized in that a shaft sleeve is convexly arranged on one side, facing the cutting saw bit, of the head shell, the saw bit rotating shaft penetrates through the shaft sleeve, a semicircular clamping sleeve is convexly arranged on one side, facing the head shell, of the saw bit fixing cover, and the semicircular clamping sleeve is sleeved on the shaft sleeve and is locked and fixed through a clamping hoop.

9. A hand held grooving machine as claimed in claim 8 wherein: the clamp comprises an annular clamp body with an opening, a pair of locking arms arranged on two sides of the opening end of the annular clamp body and a locking bolt used for locking the pair of locking arms together, and the annular clamp body is sleeved outside the semi-circular annular clamp sleeve and welded with the semi-circular annular clamp sleeve.

10. A hand held grooving machine as claimed in claim 1 wherein: one side of the saw blade fixing cover back to the head shell is provided with a water spray pipe which is obliquely arranged, the upper end of the water spray pipe is tightly pressed and fixed on the saw blade fixing cover through a pressing block, and the lower end of the water spray pipe faces to the outer edge of the lower end of the cutting saw blade.