CN109514505B

CN109514505B - Electric tool with heat dissipation function

Info

Publication number: CN109514505B
Application number: CN201811399707.9A
Authority: CN
Inventors: 钱贤峰
Original assignee: Ningbo Huanying Auto Parts Co ltd
Current assignee: Ningbo Huanying Auto Parts Co ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2021-01-12
Anticipated expiration: 2038-11-22
Also published as: CN109514505A

Abstract

The invention relates to an electric tool with a heat dissipation function, which comprises a shell, wherein a motor is arranged in the shell, a plurality of heat dissipation holes are formed in the position, corresponding to the motor, of the shell, the shell is coated with a movable cover matched with the shape of the rear end of the shell and the shape of a handle, the movable cover is elastically matched with the shell and can elastically move relative to the shell, auxiliary holes matched with the shape and the number of the heat dissipation holes are formed in the movable cover, the heat dissipation holes and the auxiliary holes are staggered from front to back in a natural state, and the heat dissipation holes are closed; when the electric tool is used, the movable cover can be pushed towards the head of the electric tool by a user holding the hand, so that the auxiliary hole on the movable cover is communicated with the heat dissipation hole on the shell, and heat dissipation is realized; when the dust collector is not used, the movable cover is elastically reset, and dust is prevented from entering the shell.

Description

Electric tool with heat dissipation function

Technical Field

The invention relates to the technical field of electric tools, in particular to an electric tool with a heat dissipation function.

Background

Electric tool is mainly through motor drive when using, the motor sets up inside the electric tool casing, circumference at the motor position on the casing sets up the air outlet, the inside and outside air exchange of mainly used electric tool casing, thereby give off the heat with electric tool when using, in order to prevent that the motor from overheating and causing the damage, but above-mentioned structure also has certain problem, the setting of air outlet has played the radiating effect, but also make the outside dust of casing get into inside the casing through the air outlet very easily, when the dust is when the casing accumulation is too much, cause the harm to electric tool easily, influence its performance, and reduce electric tool's life.

Disclosure of Invention

In view of the above-mentioned prior art, an object of the present invention is to provide an electric power tool with a heat dissipation function, which has a dust-proof function and a long service life.

The technical scheme adopted by the invention for solving the technical problems is as follows: an electric tool with a heat dissipation function comprises a shell, wherein a motor is arranged in the shell, a plurality of heat dissipation holes are formed in the position, corresponding to the motor, of the shell, a movable cover matched with the rear end of the shell and the shape of a handle is wrapped on the shell, the movable cover is elastically matched with the shell and can elastically move relative to the shell, auxiliary holes matched with the shapes and the number of the heat dissipation holes are formed in the movable cover, the heat dissipation holes and the auxiliary holes are staggered back and forth in a natural state, and the heat dissipation holes are closed; when in use, the heat dissipation hole is communicated with the auxiliary hole to exchange air inside and outside the shell for heat dissipation.

Furthermore, a connecting column is convexly arranged at the center of the rear end of the shell, a connecting hole for the connecting column to penetrate through is formed in the movable cover, the end part of the connecting column penetrates through the connecting hole and is exposed outside the movable cover, and an adjusting nut for limiting the movable cover is screwed on the end part of the connecting column.

Further, the connecting column comprises a smooth section and a thread section matched with the adjusting nut, and the inner wall of the connecting hole is smoothly arranged.

Furthermore, at least two first mounting grooves are convexly arranged at the rear end of the shell, second mounting grooves corresponding to the first mounting grooves in number and position are convexly arranged in the movable cover, and springs are clamped between the first mounting grooves and the second mounting grooves.

Furthermore, a first salient point of a positioning spring is arranged in the first mounting groove, and a second salient point of the positioning spring is arranged in the second mounting groove.

Furthermore, a through hole penetrating through the movable cover is formed in the second salient point.

Furthermore, an arc hole penetrating through the movable cover is formed in the bottom of the second mounting groove in the circumferential direction of the second salient point.

Furthermore, the lower end of the movable cover is hinged with a guide rod, the lower end of the handle part of the shell extends to form a guide groove matched with the guide rod, and a roller is arranged at the contact end of the guide rod and the guide groove.

Further, the lower end of the movable cover extends to form a stop block for limiting the rotation of the guide rod, and the lower edge of the stop block is flush with the upper edge of the guide groove.

Further, the upper edge of the guide groove is provided with an arc guide angle.

Compared with the prior art, the invention has the advantages that: according to the invention, the movable cover matched with the shapes of the rear end of the shell and the handle part is arranged, when the electric tool is used, the movable cover can be pushed towards the head direction of the electric tool by holding the handle part by a user, so that the auxiliary hole on the movable cover is communicated with the heat dissipation hole on the shell, and the heat dissipation is realized; and when not using, the movable cover elasticity resets, make the auxiliary hole on the movable cover stagger with the louvre, the louvre is closed to the movable cover, the auxiliary hole is closed to the casing, thereby prevent that the dust from getting into in the casing, prolong electric tool's life, the design of this movable cover, hold the action drive through the handle, the error of opening the louvre can not take place to electric tool during operation forget, and the movable cover can reset self-closing louvre through elasticity again when not using, play dustproof effect, not only do not increase extra operating procedure, and convenience simple to use, and can not take place to forget the error of opening or closing the louvre.

Drawings

FIG. 1 is a schematic view of the structure of the present invention in its natural state;

FIG. 2 is a schematic structural view of the present invention in use;

FIG. 3 is a rear view of the removable cover of the present invention;

FIG. 4 is a schematic view of the guide bar of the present invention in an installed condition;

as shown in the figure, 1 casing, 2 louvres, 3 movable covers, 4 auxiliary holes, 5 spliced poles, 6 connecting holes, 7 adjusting nuts, 8 first mounting grooves, 9 second mounting grooves, 10 springs, 11 through holes, 12 arc holes, 13 guide rods, 14 guide grooves, 15 rollers, 16 check blocks and 17 handle parts.

Detailed Description

As shown in fig. 1-4, an electric tool with heat dissipation function comprises a housing 1, a motor is arranged in the housing 1, a plurality of heat dissipation holes 2 are formed in the housing 1 at positions corresponding to the motor, a movable cover 3 matched with the rear end of the housing 1 and a handle part 17 in shape is coated on the housing 1, the movable cover 3 is elastically matched with the housing 1 and can elastically move relative to the housing 1, auxiliary holes 4 matched with the heat dissipation holes 2 in shape and quantity are formed in the movable cover 3, the heat dissipation holes 2 and the auxiliary holes 4 are staggered back and forth in a natural state, and the heat dissipation holes 2 are closed; in the use state, the heat dissipation hole 2 is communicated with the auxiliary hole 4 for exchanging and dissipating heat of the air inside and outside the shell 1.

According to the invention, the movable cover 3 matched with the rear end of the shell 1 and the handle part 17 in shape is arranged, when the electric tool is used, the movable cover 3 can be pushed towards the head direction of the electric tool by holding the handle part 17 with a user, so that the auxiliary holes 4 on the movable cover 3 are communicated with the heat dissipation holes 2 on the shell 1, and heat dissipation is realized; when the electric tool is not used, the movable cover 3 is elastically reset, so that the auxiliary hole 4 on the movable cover 3 is staggered with the heat dissipation hole 2, the heat dissipation hole 2 is closed by the movable cover 3, the auxiliary hole 4 is closed by the shell 1, thereby preventing dust from entering the shell 1, prolonging the service life of the electric tool, the movable cover 3 is designed, the error of forgetting to open the heat dissipation hole 2 when the electric tool works can not occur through the holding action drive of the handle part 17, the movable cover 3 can automatically close the heat dissipation hole 2 through elastic reset when not used, thereby playing a dustproof role, not only adding additional operation steps, but also having simple and convenient use, and avoiding the error of forgetting to open or close the heat dissipation hole 2, in addition, the distance L from the rear side surface of the handle part 17 to the inner side surface of the movable cover 3 is the displacement of the elastic movement of the movable cover 3, when the common electric tool is used, the operator, according to the invention, the movable cover 3 matched with the rear end of the shell 1 and the shape of the handle part 17 is adopted, so that an operator can drive the movable cover 3 to push towards the head of the electric tool according to the original operation action when using the electric tool, the auxiliary hole 4 on the movable cover 3 is communicated with the heat dissipation hole 2 on the shell 1, the heat dissipation is realized, when the operator looses the hand, the electric tool stops working, the movable cover 3 elastically resets to close the heat dissipation hole 4, and the dustproof effect is realized.

Preferably, a connecting column 5 is convexly arranged at the center of the rear end of the shell 1, a connecting hole 6 for the connecting column 5 to penetrate through is formed in the movable cover 3, the end of the connecting column 5 penetrates through the connecting hole 6 and is exposed outside the movable cover 3, an adjusting nut 7 for limiting the movable cover 3 is screwed at the end of the connecting column 5, the distance between the movable cover 3 and the shell 1 can be adjusted through the adjusting nut 7, namely the elastic resetting distance of the movable cover 3, the adjusting nut 7 is further used for limiting the movable cover 3 to be separated from the shell 1, and when the movable cover 3 is elastically reset, the adjusting nut 7 plays a role in stopping and limiting.

Preferably, the connecting column 5 comprises a smooth section and a thread section matched with the adjusting nut 7, the inner wall of the connecting hole 6 is smoothly arranged, and the connecting column 5 is divided into the smooth section and the thread section, so that the connecting column 5 is matched with the connecting hole 6 with the smooth inner wall on the one hand, the movable cover 3 can smoothly slide along the connecting column 5, the heat dissipation holes 2 are opened and closed, and the movable cover 3 is matched with the adjusting nut 7 on the other hand to adjust the installation position of the movable cover 3.

As preferred, the protruding at least two first mounting grooves 8 that are equipped with of 1 rear end of casing, protruding second mounting groove 9 corresponding with first mounting groove 8 quantity and position that is equipped with in the activity cover 3, the joint has spring 10 between first mounting groove 8 and the second mounting groove 9 for keep elastic fit between activity cover 3 and the casing 1, under no exogenic action, spring 10 resets and can pull open the distance between activity cover 3 and the casing 1, thereby close louvre 2, play dustproof effect, and first mounting groove 8, setting up of second mounting groove 9 can play limiting displacement to spring 10, prevent that spring 10 from shifting, influence the reseing of activity cover 3.

Preferably, a first salient point of a positioning spring 10 is arranged in the first mounting groove 8, a second salient point of the positioning spring 10 is arranged in the second mounting groove 9, and the first salient point and the second salient point are convenient for mounting the spring 10.

Preferably, be equipped with the through-hole 11 that runs through movable cover 3 on the second bump, thereby the setting of this through-hole 11 can supply thin iron wire to penetrate when installing spring 10 and pack into second mounting groove 9 to auxiliary spring 10, because when movable cover 3 cup jointed with casing 1, inside spring 10 is blind dress, takes place the installation dislocation easily, and the thin iron wire can be inserted in advance in the setting of this through-hole 11 and the spring 10 is worn on thin iron wire, plays the direction auxiliary action during the installation, improves the installation effectiveness.

Preferably, the bottom of the second mounting groove 9 is provided with an arc hole 12 penetrating through the movable cover 3 in the circumferential direction of the second salient point, the arc hole 12 may be two half arc holes, three third arc holes, or four quarter arc holes, the arrangement of the arc hole 12 may be used to observe the mounting condition of the inner spring 10, and if the spring 10 is not mounted in place, the inner spring needs to be mounted again.

Preferably, the lower end of the movable cover 3 is hinged with a guide rod 13, the lower end of the handle portion 17 of the housing 1 extends to form a guide groove 14 matched with the guide rod 13, a roller 15 is arranged at the end, contacted with the guide groove 14, of the guide rod 13, the guide rod 13 is matched with the guide groove 14, a guide auxiliary effect is achieved when the movable cover 3 slides, the roller 15 can reduce friction between the guide rod 13 and the guide groove 14, so that the movable cover 3 can slide smoothly, in addition, the guide groove 14 achieves a limiting effect on the guide rod 13 and limits the movable cover 3 together with the adjusting nut 7, the movable cover 3 is prevented from being separated from the housing 1 when the movable cover 3 elastically resets, and the two are matched and limited more stably.

Preferably, a stopper 16 for limiting the rotation of the guide rod 13 extends from the lower end of the movable cover 3, the lower edge of the stopper 16 is flush with the upper edge of the guide groove 14, so that when the movable cover 3 is installed, the lower end of the movable cover 3 can slide into the range of the guide groove 14 without hindrance, and the stopper 16 is arranged to limit the rotation of the guide rod 13 towards the head of the electric tool, so that the lower end of the guide rod 13 is kept in contact with the bottom surface of the guide groove 14 when the movable cover 3 slides.

Preferably, the upper edge of the guide groove 14 is provided with a circular arc guide angle, so that the guide rod 13 is guided into the guide groove 14 conveniently and is prevented from being scratched.

When the electric tool is used, an operator holds the handle part 17 of the electric tool, and simultaneously holds the lower part of the movable cover 3, and drives the movable cover 3 to slide towards the head part of the electric tool, so that the heat dissipation holes 2 on the shell 1 are communicated with the auxiliary holes 4 on the movable cover 3, heat dissipation can be realized when the motor works, when the electric tool is not used, the handle part 17 is loosened by the hand of the operator, under the condition of no external force, the movable cover 3 is reset through the spring 10, the rear end of the movable cover 3 is abutted against the adjusting nut 7, the guide rod 13 at the lower end of the movable cover 3 is abutted against the wall of the guide groove 14, the auxiliary holes 4 on the movable cover 3 are staggered with the heat dissipation holes 2, the heat dissipation holes 2 are closed by the movable cover 3, the auxiliary holes 4 are closed by the shell 1, thereby preventing dust from entering the shell 1, the service life of the electric tool is prolonged, in addition, when the movable cover 3 is, guide rod 13 of 3 lower extremes of movable cover turns to horizontal position to electric tool rear portion direction, then promotes movable cover 3 and moves to electric tool head direction for 3 lower extremes of movable cover slide to 14 regional tops of guide slot, to the whole guide slot 14 regions of sliding into of guide rod 13, guide rod 13 rotates vertical position under the action of gravity, then cancel thrust, movable cover 3 moves to electric tool rear portion direction, offsets to guide

rod

13 and 14 walls of guide slot, accomplish the installation, the installation is simple, need not with the help of appurtenance.

Finally, it should be noted that: 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 skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric tool with a heat dissipation function comprises a shell (1), wherein a motor is arranged in the shell (1), and the electric tool is characterized in that a plurality of heat dissipation holes (2) are formed in the corresponding positions of the motor on the shell (1), a movable cover (3) matched with the rear end of the shell (1) and the shape of a handle part (17) is coated on the shell (1), the movable cover (3) is elastically matched with the shell (1) and can elastically move relative to the shell (1), auxiliary holes (4) matched with the heat dissipation holes (2) in shape and quantity are formed in the movable cover (3), the heat dissipation holes (2) and the auxiliary holes (4) are staggered from front to back in a natural state, and the heat dissipation holes (2) are closed; under the user state, this louvre (2) and auxiliary hole (4) intercommunication are in order to supply the inside and outside air exchange heat dissipation of casing (1), casing (1) rear end center department is protruding to be equipped with spliced pole (5), it has connecting hole (6) that supply spliced pole (5) to pass to open on activity cover (3), spliced pole (5) tip passes connecting hole (6) and exposes in activity cover (3) outside, and this spliced pole (5) tip is twisted has adjusting nut (7) that are used for spacing activity cover (3), the lower extreme of activity cover (3) articulates there is guide arm (13), casing (1) extend at the lower extreme of handle portion (17) have with guide arm (13) complex guide slot (14), be equipped with gyro wheel (15) with guide arm (14) contact jaw on guide arm (13).

2. The power tool with the heat dissipation function according to claim 1, wherein the connecting column (5) comprises a smooth section and a threaded section matched with the adjusting nut (7), and the inner wall of the connecting hole (6) is smoothly arranged.

3. The electric tool with the heat dissipation function according to claim 1, wherein at least two first mounting grooves (8) are convexly formed at the rear end of the housing (1), second mounting grooves (9) corresponding to the number and the positions of the first mounting grooves (8) are convexly formed in the movable cover (3), and a spring (10) is clamped between the first mounting grooves (8) and the second mounting grooves (9).

4. The power tool with the heat dissipation function as claimed in claim 3, wherein a first protruding point of the positioning spring (10) is arranged in the first mounting groove (8), and a second protruding point of the positioning spring (10) is arranged in the second mounting groove (9).

5. The power tool with the heat dissipation function according to claim 4, wherein the second salient point is provided with a through hole (11) penetrating through the movable cover (3).

6. The electric tool with the heat dissipation function as recited in claim 4, wherein the bottom of the second mounting groove (9) is provided with an arc hole (12) penetrating through the movable cover (3) in the circumferential direction of the second salient point.

7. The power tool with the heat dissipation function as claimed in claim 1, wherein a stopper (16) for limiting the rotation of the guide rod (13) extends from the lower end of the movable cover (3), and the lower edge of the stopper (16) is flush with the upper edge of the guide groove (14).

8. The power tool with the heat dissipation function according to claim 1, wherein the upper edge of the guide groove (14) is provided with a rounded guide angle.