CN213244760U

CN213244760U - Apply to heat radiation structure of transistor control system such as brushless electric tool

Info

Publication number: CN213244760U
Application number: CN202022450771.4U
Authority: CN
Inventors: 姜俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-05-18
Anticipated expiration: 2030-10-29

Abstract

The utility model provides a apply to transistor control system's such as brushless electric tool heat radiation structure. The heat radiation structure applied to transistor control systems such as brushless electric tools comprises: a brushless tool body; the casing, the casing set up in on the brushless tool body, be provided with fixed cover and lower fixed cover on the casing, go up fixed cover and carry out fixed connection through the screw down between the fixed cover to go up fixed cover and be provided with the stator down between the fixed cover, the inside of going up fixed cover and fixed cover down is provided with rotor front bearing and rotor rear bearing, be provided with the rotor on the rotor front bearing. The utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure, this structure can be sealed completely and has created a long-term radiating condition under the bad condition of ventilation, makes control system can be under following condition normal use, has not only improved radiating efficiency, has still improved the practicality of this structure.

Description

Apply to heat radiation structure of transistor control system such as brushless electric tool

Technical Field

The utility model relates to a brushless electric tool field especially relates to an apply to transistor control system's such as brushless electric tool heat radiation structure.

Background

Brushless electric tool control system, the frequency that appears in daily life is higher, through using brushless electric tool control system, plays two main radiating effects of forced air cooling, metal heat conduction for the speed of cooling.

At present, a brushless electric tool control system mainly adopts two main heat dissipation modes of air cooling and metal heat conduction, and certain disadvantages exist in the use process of the heat conduction modes, including low efficiency, and the effective heat dissipation cannot be carried out under the conditions of sealing, poor ventilation and the like.

Therefore, it is desirable to provide a heat dissipation structure for a transistor control system of a brushless electric tool, etc. to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure, it is lower to have solved efficiency, will unable effective radiating problem of carrying on under the condition such as seal, ventilate harmfully moreover.

In order to solve the technical problem, the utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure, include:

a brushless tool body;

the brushless tool comprises a brushless tool body, a shell, a stator and a spring washer, wherein the shell is arranged on the brushless tool body, an upper fixing cover and a lower fixing cover are arranged on the shell, the upper fixing cover and the lower fixing cover are fixedly connected through screws, a stator is arranged between the upper fixing cover and the lower fixing cover, a rotor front bearing and a rotor rear bearing are arranged inside the upper fixing cover and the lower fixing cover, a rotor is arranged on the rotor front bearing, an eccentric wheel is arranged on one side of the upper fixing cover and one side of the lower fixing cover, a cover plate is arranged inside the eccentric wheel, and the spring washer is arranged between the cover plate and the rotor;

the control panel MOS, the control panel MOS set up in on the brushless tool body, there is the air hose through screw thread connection on the control panel MOS, the intercommunication has the interface on the air hose, the intercommunication has the hose on the interface, the one end of hose with one side of eccentric wheel communicates.

Preferably, the brushless tool body is provided with a control switch.

Preferably, the hose with equal fixedly connected with locating plate on the air hose, two latch segments of one side fixedly connected with of locating plate, the hose set up in the inside of interface, the chucking groove has all been seted up to the both sides of interface, one side of latch segment runs through the chucking groove and extends to the inside in chucking groove.

Preferably, the connector is fixedly connected with two U-shaped plates, a sliding plate is slidably connected between two sides of the inside of each U-shaped plate, one side of each sliding plate is fixedly connected with two inserting pieces, the locking block is provided with an insertion groove, and one side of each inserting piece penetrates through the connector and the insertion groove and extends to the inside of the insertion groove.

Preferably, the other side of the sliding plate is fixedly connected with two operating rods, one ends of the two operating rods penetrate through the U-shaped plate and extend to the U-shaped plate, and a control handle is fixedly connected between the ends of the two operating rods extending to the U-shaped plate.

Preferably, the outer surfaces of the two operating rods are sleeved with extrusion springs.

Preferably, the locking piece is fitted into the locking groove, and the insert is fitted into the insertion groove.

Compared with the prior art, the utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure has following beneficial effect:

the utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure, this structure can be sealed completely and has created a long-term radiating condition under the bad condition of ventilation, makes control system can be under following condition normal use, has not only improved radiating efficiency, has still improved the practicality of this structure.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a heat dissipation structure applied to a transistor control system such as a brushless electric tool according to the present invention;

fig. 2 is an exploded view of the heat dissipation structure applied to the transistor control system of the brushless electric tool, etc. according to the present invention;

FIG. 3 is a schematic cross-sectional view of the hose of FIG. 1;

FIG. 4 is a schematic structural diagram of the control board MOS shown in FIG. 1;

FIG. 5 is a schematic structural view of the upper fixing cover and the lower fixing cover shown in FIG. 1;

FIG. 6 is a side cross-sectional view of the upper retaining cap and the lower retaining cap of FIG. 1;

FIG. 7 is a schematic view of the eccentric shown in FIG. 1;

fig. 8 is a schematic structural diagram of a second embodiment of a heat dissipation structure applied to a transistor control system such as a brushless electric tool according to the present invention;

fig. 9 is a partially enlarged schematic view of a portion a shown in fig. 8.

Reference numbers in the figures: 1. the tool comprises a base, 2, a U-shaped sliding rail, 3, a sliding block, 4, a brushless tool body, 5, a shell, 6, a hose, 7, an interface, 8, an air pipe, 9, a screw, 10, a stator, 12, an upper fixing cover, 14, a control panel MOS, 15, a rotor front bearing, 16, a rotor, 17, a rotor rear bearing, 18, an eccentric wheel, 19, a cover plate, 20, an elastic retainer ring, 21, a lower fixing cover, 22, a control switch, 23, a positioning plate, 24, a locking block, 26, a clamping groove, 27, a U-shaped plate, 28, a sliding plate, 29, an insertion piece, 30, an insertion groove, 31, an operating rod, 32, a control handle, 33 and an extrusion spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

First embodiment

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, wherein fig. 1 is a schematic structural diagram of a heat dissipation structure applied to a transistor control system of a brushless electric tool according to a first embodiment of the present invention; fig. 2 is an exploded view of the heat dissipation structure applied to the transistor control system of the brushless electric tool, etc. according to the present invention; FIG. 3 is a schematic cross-sectional view of the hose of FIG. 1; FIG. 4 is a schematic structural diagram of the control board MOS shown in FIG. 1; FIG. 5 is a schematic structural view of the upper fixing cover and the lower fixing cover shown in FIG. 1; FIG. 6 is a side cross-sectional view of the upper retaining cap and the lower retaining cap of FIG. 1; fig. 7 is a schematic structural view of the eccentric wheel shown in fig. 1. Apply to transistor control system's such as brushless electric tool heat radiation structure, include:

a brushless tool body 4;

the brushless tool comprises a housing 5, the housing is arranged on the brushless tool body 4, an upper fixing cover 12 and a lower fixing cover 21 are arranged on the housing 5, the upper fixing cover 12 and the lower fixing cover 21 are fixedly connected through a screw 11, a stator 10 is arranged between the upper fixing cover 12 and the lower fixing cover 21, a rotor front bearing 15 and a rotor rear bearing 17 are arranged inside the upper fixing cover 12 and the lower fixing cover 21, a rotor 16 is arranged on the rotor front bearing 15, an eccentric wheel 18 is arranged on one side of the upper fixing cover 12 and one side of the lower fixing cover 21, a cover plate 19 is arranged inside the eccentric wheel 18, and an elastic retainer ring 20 is arranged between the cover plate 19 and the rotor 16;

the control plate MOS14 is arranged on the brushless tool body 4, the control plate MOS14 is connected with an air tube 8 through a screw 9 in a threaded manner, the air tube 8 is communicated with a connector 7, the connector 7 is communicated with a hose 6, and one end of the hose 6 is communicated with one side of the eccentric wheel 18;

the control system can be applied in wider fields, such as space, vacuum environment, high-heat environment and the like;

the control system can be designed in a space completely isolated from the outside, so that the control system is prevented from being polluted by external dust, static electricity and the like, and the failure rate is reduced;

the control system can also normally ensure the operation under a larger load.

The brushless tool body is provided with a control switch 22.

The utility model provides an apply to transistor control system's such as brushless electric tool heat radiation structure's theory of operation as follows:

when the brushless tool body 4 is used, a user presses the control switch 22, the control board MOS14 starts to control the motor to run, the control board MOS14 itself starts to generate heat due to the increase of the running current, the motor runs to enable the eccentric wheel 18 to continuously press a part of the hose 6, the cooling medium in the hose 6 is continuously pressed to continuously circulate in the air pipe 8 and the interface 7, and the flowing cooling medium continuously absorbs heat generated by electronic components such as the control system MOS when passing through the hollow pipe 8, so that the electronic components of the control system are maintained under proper working conditions.

the structure can create a long-acting heat dissipation condition under the conditions of complete sealing and poor ventilation, so that the control system can be normally used under the following conditions, the heat dissipation efficiency is improved, and the practicability of the structure is also improved.

Second embodiment

Referring to fig. 7-8, based on the heat dissipation structure applied to the transistor control system of the brushless electric tool and the like provided in the first embodiment of the present application, the second embodiment of the present application provides another heat dissipation structure applied to the transistor control system of the brushless electric tool and the like. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the second embodiment of the present application provides a heat dissipation structure for a transistor control system such as a brushless electric power tool, which is different in that: the hose 6 and the air pipe 8 are both fixedly connected with a positioning plate 23, one side of the positioning plate 23 is fixedly connected with two locking blocks 24, the hose 6 is arranged inside the connector 7, two sides of the connector 7 are both provided with clamping grooves 26, and one side of each locking block 24 penetrates through the clamping groove 26 and extends into the clamping groove 26;

one ends of the hose 6 and the air pipe 8 are sleeved with sealing gaskets, and the sealing effect is achieved through contact extrusion between the two sealing gaskets;

the connector 7 is fixedly connected with two U-shaped plates 27, a sliding plate 28 is slidably connected between two sides of the interior of each U-shaped plate 27, one side of each sliding plate 28 is fixedly connected with two insertion pieces 29, the locking block 24 is provided with an insertion groove 30, and one side of each insertion piece 29 penetrates through the connector 7 and the insertion groove 30 and extends into the insertion groove 30.

Two operating rods 31 are fixedly connected to the other side of the sliding plate 28, one ends of the two operating rods 31 penetrate through the U-shaped plate 27 and extend to the U-shaped plate 27, and a control handle 32 is fixedly connected between the ends of the two operating rods 31 extending to the U-shaped plate 27.

The outer surfaces of the two operating rods 31 are sleeved with extrusion springs 33;

the insert 29 on the slide plate 28 is pushed into the insertion groove 30 by the resilient return of the provided compression spring 33, thereby achieving a fixed mounting of the hose 6 and the air tube 8.

The locking block 24 is matched with the clamping groove 26, and the insertion piece 29 is matched with the insertion groove 30;

the locking block 24 is rectangular, and the clamping groove 26 is concave;

the insert 29 is rectangular in shape and the insertion slot 30 is concave in shape.

When the hose 6 is damaged in the using process, the hose 6 and the air tube 8 need to be replaced, and the hose 6 and the air tube 8 are separated to replace a new hose 6 for use, when the hose is installed, firstly, one ends of the hose 6 and the air tube 8 are inserted into the interface 7, so that the positioning plate 23 on the hose 6 and the air tube 8 is close to the interface 7, and the locking block 24 on the positioning plate 23 is driven to be inserted into the clamping groove 26 on the interface 7, at the moment, the hose 6 and the air tube 8 are in contact superposition, in order to avoid falling off, the insertion piece 29 on the sliding plate 28 is pushed into the insertion groove 30 in the locking block 24 under the resilience of the extrusion spring 33 through the release control handle 32, and then the fixed locking of the positioning plate 23 is realized, and the hose 6 and the air tube 8 are fixed;

when the hose 6 and the air tube 8 are detached, the control handle 32 is pulled to drive the sliding plate 28 on the operating rod 31 to slide, so that the insertion piece 29 on the sliding plate 28 is separated from the insertion groove 30, the positioning plates 23 can be separated, the locking blocks 24 on the two positioning plates 23 are separated from the interface 7, and the hose 6 is replaced.

Through carrying out regular change to hose 6, avoid appearing hose 6 and appear damaging in the use to the condition of leaking appears, and then influence radiating effect.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A heat dissipation structure for a transistor control system of a brushless electric tool or the like, comprising:

a brushless tool body;

2. The heat dissipation structure as defined in claim 1, wherein the control switch is disposed on the brushless tool body.

3. The heat dissipating structure of claim 1, wherein the hose and the air tube are both fixedly connected with a positioning plate, one side of the positioning plate is fixedly connected with two locking blocks, the hose is disposed inside the connector, two sides of the connector are both provided with clamping grooves, and one side of the locking block penetrates through the clamping grooves and extends into the clamping grooves.

4. The heat dissipating structure of claim 3, wherein two U-shaped plates are fixedly connected to the interface, a sliding plate is slidably connected between two sides of the inside of each U-shaped plate, two insertion members are fixedly connected to one side of the sliding plate, the locking block is provided with an insertion slot, and one side of each insertion member penetrates through the interface and the insertion slot and extends into the insertion slot.

5. The heat dissipating structure of claim 4, wherein two levers are fixedly connected to the other side of the sliding plate, one end of each of the two levers extends through the U-shaped plate and extends to the U-shaped plate, and a control handle is fixedly connected between the two levers extending to one end of the U-shaped plate.

6. The heat dissipating structure of claim 5, wherein the two levers are sleeved with a compression spring on their outer surfaces.

7. The heat dissipating structure for transistor control systems of brushless power tools as defined in claim 4, wherein the locking block is adapted to the locking groove, and the insert is adapted to the insertion groove.