CN117728619A - Transverse power head - Google Patents

Abstract

The application provides a transverse power head, which comprises a motor support, wherein a motor assembly cavity is arranged in the motor support, a motor is assembled in the motor assembly cavity, the motor comprises a motor stator and a motor rotor, and the motor assembly cavity is communicated with the outside air through a first outer through hole; the shell is arranged on the motor bracket, a first accommodating cavity for assembling the control assembly is arranged in the shell, and a second outer through hole is formed in the first accommodating cavity; the heat dissipation air path is sequentially communicated with the first outer through hole, the motor assembly cavity, the first accommodating cavity and the second outer through hole. According to the heat dissipation device, the heat dissipation air path is arranged on the power head, so that heat emitted by the power head control assembly can be timely discharged along with air flow in the heat dissipation air path, the heat dissipation capacity of the control assembly is improved, and heat concentration is avoided.

Description

Transverse power head

Technical Field

The application relates to the field of transverse power heads, in particular to a transverse power head.

Background

The existing power tools, especially power devices of garden tools, are divided into two major types, namely an engine taking fuel such as gasoline or diesel oil as an energy source and a motor taking a battery as an energy source, wherein the fuel engine has the problems of inconvenient operation, large vibration, large noise and serious pollution and potential safety hazards in gasoline and diesel oil storage, so that the existing power head is gradually replaced by a power head of a lithium battery driven motor.

The lithium battery driven motor has the advantages of small pollution, low noise and convenient operation, and along with the importance of environmental protection, the life and working modes of green, environmental protection and carbon reduction are advocated, and the lithium battery driven power head is gradually used for replacing the original fuel engine driven power head.

The control component of the lithium battery power head can consume a part of power in load operation, the consumed power is more expressed in a heat form, if invalid heat cannot be timely discharged out of the power unit, hidden danger can be brought, such as failure of the control component caused by heat concentration, and the heat concentration can influence the electric control efficiency of the motor.

Disclosure of Invention

In view of the shortcomings of the prior art, the application provides a transverse power head to solve the technical problems that heat generated by the conventional power head during working cannot be removed in time, so that the heat is concentrated to affect the electric control efficiency of a motor and the like.

To achieve the above and other related objects, the present application provides a transverse power head comprising: the motor bracket is internally provided with a motor assembly cavity, a motor is assembled in the motor assembly cavity, the motor comprises a motor stator and a motor rotor, and the motor assembly cavity is communicated with the outside air through a first outer through hole; the shell is arranged on the motor bracket, a first accommodating cavity for assembling the control assembly is formed in the shell, and a second outer through hole is formed in the first accommodating cavity; the heat dissipation air path is sequentially communicated with the first outer through hole, the motor assembly cavity, the first accommodating cavity and the second outer through hole.

In an embodiment of the present application, a first fan is disposed in the heat dissipation air path, and the first fan is disposed on a rotor shaft of the motor rotor.

In an embodiment of the present application, the first fan is disposed at a tail end of the rotor shaft and at a top of the first outer port, and external air enters the first accommodating cavity through the second outer port, flows through the coil winding assembled in the motor assembly cavity, and is driven by the first fan to be discharged through the first outer port.

In an embodiment of the present application, a second fan is disposed in the heat dissipation air path, the second fan is disposed on a side wall of the first accommodating cavity, and an air outlet direction of the second fan is perpendicular to a ventilation direction of the second outer port.

In an embodiment of the present application, the first fan is disposed at a front end of the rotor shaft, and the first accommodating cavity and the motor assembling cavity are disposed on two sides of the first fan in the cooling air path.

In an embodiment of the present application, the heat dissipation air path includes a first inner port and a second inner port; the first inner through hole is arranged at the top of one side of the motor assembly cavity, which is far away from the first outer through hole; the second inner through hole is communicated with the first inner through hole, and the second inner through hole is arranged at the bottom of one side, far away from the second outer through hole, of the first accommodating cavity.

In an embodiment of the application, the first outer through hole penetrates through the motor support downwards, a ventilation slot is formed in the side wall of the bottom surface of the motor support, and the first outer through hole is communicated with outside air through the ventilation slot; the second outer through hole is arranged on the bottom surface of the shell.

In an embodiment of the present application, a bottom of the motor bracket is provided with a complete machine mounting surface, and the complete machine mounting surface is substantially parallel to a rotor shaft of the motor rotor.

In an embodiment of the present application, a second accommodating cavity is disposed in the housing, and a battery pack is detachably fixed in the second accommodating cavity.

In an embodiment of the present application, the second outer port is provided with a filtering device.

The beneficial effects of this application lie in combining prior art:

the existing power head control assembly and the like can consume a part of power in load operation, the consumed power is more expressed in a heat form, if invalid heat cannot be timely discharged out of the power unit, hidden danger is brought, and the heat concentration can also influence the electric control efficiency of the motor. According to the heat dissipation device, the heat dissipation air path is arranged on the power head, so that heat emitted by the power head control assembly can be timely discharged along with air flow in the heat dissipation air path, the heat dissipation capacity of the control assembly is improved, and heat concentration is avoided.

The heat dissipation air path is communicated with the first accommodating cavity and the motor assembling cavity, so that heat generated by the control assembly of the first accommodating cavity is discharged, heat in the motor assembling cavity is discharged, heat dissipation efficiency is improved, and power head faults caused by heat concentration are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an exemplary cross-head unit of the present application;

FIG. 2 is a front view of an exemplary cross-head unit of the present application;

FIG. 3 is a rear view of an exemplary cross-head of the present application;

FIG. 4 is a left side view of an exemplary cross-head of the present application;

FIG. 5 is a bottom view of an exemplary cross-head of the present application;

FIG. 6 is a schematic perspective view of an exemplary cross-head of the present application after cutting in a vertical direction;

FIG. 7 is a schematic view of an exemplary cross-head of the present application after cutting in a numerical direction;

FIG. 8 is a schematic perspective view of another exemplary cross-head of the present application after cutting in a vertical direction;

FIG. 9 is a schematic view of another exemplary cross-head of the present application after cutting in a numerical direction;

FIG. 10 is a perspective view of a portion of an exemplary cross-head configuration of the present application;

FIG. 11 is a schematic view of a portion of an exemplary cross-head unit according to the present disclosure;

FIG. 12 is a schematic view of an exemplary motor mount according to the present application;

fig. 13 is a perspective view of an exemplary motor mount of the present application.

Description of element reference numerals

100. A motor bracket; 110. a motor assembly cavity; 111. a first outer port; 112. a first inner port; 113. ventilating and slotting; 114. a front end cover; 115. a rear closure cap; 116. a rear end plate; 117. a vent hole; 120. a complete machine installation part; 121. a whole machine mounting surface; 123. reinforcing ribs; 130. a battery support part; 140. reinforcing the support portion; 150. a mounting block; 200. a housing; 210. a first accommodation chamber; 211. a control assembly; 212. a second outer port; 213. a second inner port; 214. a second fan; 220. a battery connection part; 221. a second accommodation chamber; 223. a flip cover; 224. locking; 225. a battery locking member; 226. a battery pack; 300. a motor rotor; 310. a rotor shaft; 400. a motor stator; 500. a heat dissipation air path; 600. a first fan; 601. a fan blade baffle; 700. and a filtering device.

Detailed Description

Other advantages and effects of the present application will become apparent to those skilled in the art from the present disclosure, when the following description of the embodiments is given by way of specific examples. The present application may be embodied or carried out in other specific embodiments, and the details of the present application may be modified or changed from various points of view and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present application is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present application. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely descriptive of convenience and are not intended to limit the scope of the disclosure in which the disclosure may be practiced, but rather are intended to cover any variations or modifications in the relative terms that would otherwise be within the spirit of the disclosure.

The control component of the transverse power head of the existing lithium battery is not provided with a special heat dissipation channel, and heat generated by the control component in a working state cannot be discharged, so that faults are easy to cause. The application claims a horizontal unit head to improve the radiating efficiency of unit head, avoid leading to the unit head trouble because of the heat dissipation is untimely.

The transverse power head comprises a motor bracket, a shell and a heat dissipation air path, wherein the shell is fixed above the motor bracket.

Fig. 1 to 5 show an exemplary transverse power head, in this embodiment, the motor bracket 100 is a mounting bracket for mounting the transverse power head on a complete machine, and is also a bracket for directly assembling a motor, so that the connection between the complete machine and the components can be integrated, and preferably, the motor housing 200 is an integrally formed aluminum alloy housing 200, and the aluminum alloy housing 200 facilitates heat dissipation of the components assembled in the motor assembly cavity 110, such as heat generated by high-speed rotation friction of a coil winding and a motor rotor 300; on the other hand, can guarantee to support stably, improve life. The motor bracket 100 is integrally formed, so that the use of assembling connecting pieces such as bolts is reduced, the stability of the transverse power head structure is improved, and the problem of assembly loosening caused by use in a vibration environment is reduced.

Fig. 6 to 9 show a part of the structure of an exemplary transverse power head, a motor assembly cavity 110 is provided in a motor support 100, and components such as a motor rotor 300 and a motor stator 400 are assembled in the motor assembly cavity 110, in this embodiment, the motor is an external rotor motor, that is, the motor rotor 300 is located outside the motor stator 400 and rotates around a rotor shaft 310, so as to meet the requirement of higher power. The end of the motor assembly chamber 110 is bolted to the front end cap 114 and the rotor shaft 310 partially extends out of the front end cap 114 to facilitate connection of the drive assembly.

The housing 200 is preferably a plastic housing 200, and the plastic housing 200 can reduce the weight of the power head, facilitate handling, and provide cushioning for components assembled in the housing 200, and prevent the components assembled in the housing 200 from being damaged when dropped or subjected to a large impact.

Fig. 10 to 11 show a part of the structure of an exemplary transverse power head, a first accommodating cavity 210 is provided in the housing 200, a control component 211 such as a control board is assembled in the first accommodating cavity 210, and the control component 211 generates more heat in the working process and needs to be discharged in time.

Referring to fig. 6 to 7, the two ends of the heat dissipation air path 500 are respectively a first outer through hole 111 disposed at the bottom end of the motor assembly cavity 110 and a second outer through hole 212 disposed at the bottom of the housing 200. In one embodiment of the present application, the first outer opening 111 is disposed at the bottom of the motor assembly cavity 110 on a side far away from the front end cover 114. One side of the front end cover 114 needs to be connected with a transmission assembly, the space arrangement is more compact, one side far away from the front end cover 114 has fewer structures, and a larger heat dissipation space is provided, so that the heat dissipation capacity is improved. The first outer through hole 111 penetrates the motor support 100 downwards, a ventilation slot 113 is formed in the bottom of the side wall of the motor support 100, the first outer through hole 111 is communicated with lateral air through the ventilation slot 113, and the ventilation direction is parallel or basically parallel to the rotor shaft 310.

The second outer port 212 is disposed at the bottom of the housing 200, and a gap is disposed at the connection between the housing 200 and the motor bracket 100 in the first receiving chamber 210, so that air flows in the second outer port 212.

The first outer through hole 111 is communicated with lateral air through the ventilation slot 113, so that compared with the existing method that lateral ventilation is directly carried out by the end part of the motor, the distance between the ventilation slot 113 and the second outer through hole 212 can be increased, and hot air is prevented from being re-inhaled into the power head; on the other hand, the first outer through hole 111 runs through the motor support 100 downwards, through lateral ventilation fluting 113 and air intercommunication, guarantees when the user state, and rainwater, dust etc. can't enter into in the motor assembly chamber 110 through first outer through hole 111, avoids rainwater, dust to enter into in the motor assembly chamber 110 and causes the damage to motor assembly, prolongs motor assembly's life, reduces the fault rate. The second outer opening 212 is disposed at the bottom of the housing 200, so that rainwater can be prevented from entering the first accommodating cavity 210 through the second outer opening 212, and the waterproof capability is improved.

The heat dissipation air path 500 further includes a first inner port 112 disposed at the top end of the motor assembly cavity 110, and a second inner port 213 disposed at the bottom of the housing 200, where the first inner port 112 is in contact communication with the second inner port 213. The communication between the motor assembly cavity 110 and the first accommodating cavity 210 is realized through the first inner through hole 112 and the second inner through hole 213, so that concentrated heat dissipation of the power head is facilitated, and the heat dissipation efficiency is better ensured.

In this embodiment, the first inner opening 112 is disposed at the top of one side far away from the first outer opening 111, so as to ensure that the air flow in the cooling air path 500 can penetrate through the whole first assembly cavity, and the air flows through the coil winding, thereby improving the cooling effect.

In an embodiment, the second inner opening 213 is disposed at the bottom of the housing 200 away from the second outer opening 212, so as to ensure that the air in the cooling air path 500 flows through the first accommodating cavity 210 to sufficiently cool each component of the control assembly 211.

The first fan 600 is disposed in the heat dissipation air path 500, and the first fan 600 drives air to flow, thereby improving the speed of air flowing in the heat dissipation air path 500 and improving heat dissipation efficiency.

With continued reference to fig. 6 and 7, in an embodiment of the present application, the first fan 600 is disposed on the rotor shaft 310, specifically, on a side of the rotor shaft 310 away from the front end cover 114, and on top of the first outer opening 111, and the first fan 600 is preferably a centrifugal fan. The first fan 600 is arranged on the rotor shaft 310 during rotation, and the first fan 600 synchronously rotates during rotation of the motor, so that the heat dissipation stability is ensured, the first fan 600 immediately stops rotating during stopping rotation of the motor, energy can be saved, consumption can be reduced, and ineffective rotation of the first fan 600 is avoided. In operation, the first fan 600 rotates to drive air to be discharged from the first outer port 111, so as to drive external air to flow from the second outer port 212 into the first accommodating cavity 210, flow from the second inner port 213 and the first inner port 112 into the motor assembly cavity 110, and then be discharged from the first fan 600 after passing through the coil windings. Original heat dissipation mode is usually to need radiating part to blow to drive the air current to treat that the heat dissipation region flows, this application is through being bloied to the outside by first fan 600, thereby makes treat the heat dissipation region by external suction air, makes the velocity of flow of air current faster, flow direction and speed more stable, guarantees stable, lasting radiating effect.

The rear side of the first fan 600 is provided with the fan blade baffle 601, the fan blade baffle 601 can change the air flow direction, ensure that the air flow is changed from the transverse direction flowing through the motor assembly cavity 110 to the longitudinal direction parallel to the first outer through hole 111, avoid the air flow to continuously flow towards the tail of the rotor shaft 310, reduce the occurrence of vortex, ensure the stability of air flow circulation in the heat dissipation air path 500, and ensure the stability of heat dissipation.

Referring to fig. 7 and 8, fig. 7 and 8 illustrate another exemplary cooling air path, and a first fan 600 is disposed on the rotor shaft 310, specifically, at an end of the rotor shaft 310 near the front end cover 114 and at a bottom of the first inner port 112, where the first fan 600 is preferably an axial fan. In operation, the air flow can flow into the motor assembly cavity 110 through the first outer opening 111, then flow into the first accommodating cavity 210 driven by the first fan 600, and finally flow out through the second outer opening 212, so that the external air is sucked into the area to be cooled, and the cooling stability is ensured. In another airflow flowing mode, the airflow flows into the first accommodating cavity 210 through the second external through hole 212, then flows into the motor assembling cavity 110 through the first fan 600, compared with the previous flowing mode, the airflow in the flowing direction flows through the first accommodating cavity 210 and then passes through the motor assembling cavity 110, and compared with the heat of the motor coil winding and the like, the heat of the control component 211 in the first accommodating cavity 210 is less, so that the temperature of the airflow entering the motor assembling cavity 110 is lower, and in the whole airflow flowing process, the average temperature is lower than the average temperature of the airflow flowing through the motor assembling cavity 110 to the first accommodating cavity 210, and the heat dissipation effect is better.

In this embodiment, a second fan 214 is further disposed in the cooling air path 500, the second fan 214 is assembled on the side surface of the first accommodating cavity 210, and the airflow direction driven by the second fan 214 is consistent with the airflow direction in the cooling air path 500. That is, when the air flow flows in from the second outer opening 212, the second fan 214 blows in a direction perpendicular to the direction of the second outer opening 212 into the first accommodating chamber 210, and when the air flow flows out from the second outer opening 212, the second fan 214 blows in a direction parallel to the direction of the second outer opening 212. The heat dissipation air path 500 is longer, and the airflow speed can be obviously increased by arranging the second fan 214, so that the heat dissipation effect is improved.

In an embodiment, the second outer port 212 is provided with a filtering device 700, and the filtering device 700 filters air entering the second outer port 212 to prevent dust, debris, water drops and the like from entering the first accommodating cavity 210, ensure the cleanness of the first accommodating cavity 210, and prevent the damage of components of the control assembly 211. Preferably, the second outer through hole 212 is recessed into the first accommodating cavity 210 and forms a grid-like vent, and a filter screen is mounted at the recessed portion, so that the filter screen can effectively filter out chips, dust, water drops and the like in the air. The bottom surface of concave part can be dismantled and is fixed with the grid board, and grid board and concave part adopt quick detach structure, if the concave part is equipped with the bayonet socket, and the edge of grid board is equipped with the fixture block of V type mouth, fixture block and buckle matched with. Under the premise that the air inlet is not influenced, the grid plate can prevent larger scraps, stones and the like from damaging the filter screen, can limit the filter screen and prevent the filter screen from falling off, and the quick-dismantling structure can be used for conveniently replacing the filter screen and improving the maintenance efficiency.

Referring to fig. 10 and 11, in an embodiment, a control board and other electronic components are assembled in the first accommodating cavity 210, the control board and other electronic components are fixed in the first accommodating cavity 210 by screws, the control board and other electronic components are arranged parallel to the rotor shaft 310, a plurality of channels transversely penetrating through the first accommodating cavity 210 are formed, and the channels are components of a heat dissipation air duct. The control assembly 211 is transversely divided by the heat dissipation air duct, so that air flows from the control assembly 211, the control panel of the control assembly 211 and other electronic components can be guaranteed to effectively dissipate heat, and the problem of local heat accumulation is avoided. The heat dissipation air duct transversely penetrates through the first accommodating cavity 210, the air flow channel is smooth, the reduction of air flow speed caused by excessive bending is reduced, the occurrence of vortex is reduced, the flow speed of air flow is improved, and the heat dissipation efficiency is improved.

In one embodiment, a rear end plate 116 is disposed in the motor assembly cavity 110, a bearing is disposed in the middle of the rear end plate 116, the bearing is in interference fit with the rotor shaft 310, a plurality of ventilation holes 117 are disposed on the rear end plate 116, and the ventilation holes 117 are circumferentially arrayed around the axis of the rotor shaft 310. Through setting up back end plate 116, the circumference array sets up a plurality of ventilation holes 117 on the back end plate 116, both can improve the assembly strength of motor assembly chamber 110, can guarantee the unobstructed of heat dissipation wind channel again, guarantees the stability of air current circulation. A rear closing cap 115 is fixed at the tail of the motor assembly cavity 110, a fan cavity is enclosed between the rear closing cap 115 and a rear end plate 116, and a first outer through hole 111 is arranged at the bottom of the fan cavity

In one embodiment, a gap is provided between the housing 200 at the bottom of the first accommodating chamber 210 and the top of the motor bracket 100; two mounting blocks 150 are arranged on the side surface of the top of the motor support 100, and the motor support 100 is fixedly connected with the shell 200 through the extending mounting blocks 150, so that a gap is reserved between the top of the motor support 100 and the shell 200 at the bottom of the first accommodating cavity 210. The aluminum alloy integrally formed motor support 100 has good heat conducting performance, the side wall of the motor assembly cavity 110 can directly discharge heat, a gap is formed between the shell 200 and the top of the motor support 100, the plastic shell 200 is prevented from affecting heat dissipation of the motor support 100, heat emitted by the motor support 100 is also reduced and transferred to the plastic shell 200 in a heat conduction mode, and therefore heat dissipation efficiency of the first accommodating cavity 210 and the motor support 100 is effectively improved.

Fig. 12 and 13 show an exemplary motor bracket, where the motor bracket 100 includes a complete machine mounting portion 120, the complete machine mounting portion 120 is disposed at the bottom of the motor assembly cavity 110, and the bottom surface of the complete machine mounting portion 120 is a rectangular complete machine mounting surface 121 for mounting and fixing the power head on the complete machine of the tool, and the size of the complete machine mounting surface 121 is the same as that of the existing gasoline engine, so as to facilitate replacement. In one embodiment, the complete machine mounting surface 121 is substantially parallel, preferably parallel, to the rotor shaft of the motor rotor. The first outer through hole 111 penetrates the whole machine installation part 120 downwards from the motor assembly cavity 110, the ventilation slot 113 is arranged at the bottom of the side surface of the whole machine installation part 120, and the first outer through hole 111 is communicated with the ventilation slot 113. In order to further improve the heat dissipation capability of the motor assembly cavity 110, in an embodiment, a hollow in the vertical direction is disposed in the complete machine mounting portion 120, the hollow penetrates the complete machine mounting portion 120 downwards, preferably, a reinforcing rib 123 is formed between the hollow portions, the reinforcing rib 123 encloses a frame shape with a rectangular, square, triangle or diamond cross section, the periphery of the area enclosed by the reinforcing rib 123 is connected to the inner wall of the complete machine mounting portion 120 through another reinforcing rib 123, so that the complete machine mounting portion 120 can stably support a power head, and the motor assembly cavity 110 is convenient to dissipate heat through the lower wall. In one embodiment, the ventilation slot 113 is disposed below the stiffener 123, i.e., the hollow is in communication with the outside air. When the air flow of the first outer through hole 111 flows outwards through the ventilation slot 113, the bottom end of the first ventilation hole has a Venturi effect, so that air at the hollow part is driven to flow, heat at the lower wall of the motor installation cavity flows out of the ventilation slot 113 along with the air flow of the first outer through hole 111 in a thermal convection mode, the heat dissipation requirement of the lower wall of the motor installation cavity is met, and the heat dissipation requirement of the assembly component in the motor installation cavity is guaranteed.

In this embodiment, the side of the motor support 100 is a battery support 130, the battery support 130 and the motor support 100 are in a zigzag shape, the battery support 130 is provided with a mounting cavity with an opening vertically upwards, the mounting cavity is fixedly connected with a battery connecting portion 220 of the housing 200, a second accommodating cavity 221 is formed in the battery connecting portion 220, and a battery pack 226 is detachably fixed in the second accommodating cavity 221. Preferably, a gap is provided between the battery connection part 220 and the main body of the motor bracket 100, that is, a gap is provided between the battery connection part 220 and the side surface of the motor bracket 100, so that air circulation is facilitated, and heat dissipation is facilitated for the side wall of the motor bracket 100.

In order to further improve the heat dissipation capability of the motor assembly cavity 110, in an embodiment, the battery support portion 130 is fixed with the outer side wall of the motor assembly cavity 110 at multiple points at intervals, the motor support portion is connected with the outer side wall of the motor assembly cavity 110 at two or more points at certain intervals, and by reducing the contact area between the outer side wall of the motor assembly cavity 110 and other components, the air on the outer wall of the motor assembly cavity 110 can flow to cool the cavity wall of the motor assembly cavity 110 in a thermal convection manner, so that the heat dissipation effect of the motor assembly cavity 110 on all the components assembled in the motor assembly cavity is improved.

The battery supporting part 130 is in a suspended state with the side wall integrated into one piece of the motor assembly cavity 110, in order to improve the load capacity of the battery supporting part 130, the battery supporting part 130 is guaranteed to provide stable support for the battery pack 226 under complex and vibration working conditions, the battery supporting part 140 is arranged in one embodiment of the application, the bottom of the reinforced supporting part 140 is contacted with the whole machine installation part 120, the top of the reinforced supporting part 140 is supported on the bottom surface of the battery supporting part 130, the reinforced supporting part 140 is obliquely arranged to effectively support the battery supporting part 130, and the battery pack 226 is guaranteed to be stably supported under complex working conditions such as vibration.

In order to facilitate heat dissipation, in one embodiment, the bottom of the battery support 130 is provided with a plurality of elongated holes, so that the battery pack 226 can dissipate heat through the battery connection part 220 under the condition that the load strength of the battery support 130 is ensured. By providing a plurality of elongated holes, the weight of the battery supporting portion 130 can be effectively reduced, thereby reducing the overall weight.

The bottom of second accommodation chamber 221 is equipped with battery connecting terminal, and the bottom of battery package 226 also is equipped with battery connecting terminal, and two battery connecting terminals phase-match realizes the quick installation power supply of battery package 226. In an embodiment, two battery packs 226 are disposed in the second accommodating cavity 221 and connected to the terminals, so that the two battery packs 226 can be fixed, and the two battery packs 226 can be of the same type or different types. The two battery packs 226 are connected in parallel to increase the power of the power head. In other embodiments, two battery packs 226 may be connected in series to provide the operating voltage of the power head. In other embodiments, two battery packs 226 may be sequentially discharged to the outside, and when one battery pack 226 is exhausted, the other battery pack 226 begins to discharge to the outside, thereby increasing the power storage and prolonging the working time.

In an embodiment, two battery packs 226 are respectively arranged at two sides of the advancing direction of the power head or are arranged at the front and back along the advancing direction, the two battery packs 226 are arranged at intervals, in an embodiment, a partition plate is arranged in one third to two thirds of areas between the two battery packs 226, gaps are arranged between other areas, and heat accumulation between the two battery packs 226 is avoided by arranging the partition plate and the gaps, so that the heat dissipation capacity is improved, and the normal working temperature of the battery packs 226 is ensured. Further, a spring is provided at the bottom of the battery connecting part 220, and a battery locking member 225 is provided at the sidewall of the battery connecting part 220, so that when the battery pack 226 is inserted into the battery connecting part 220, the spring is compressed, and the battery locking member 225 is locked, thereby locking the battery pack 226 in the battery connecting part 220. When the battery locking member 225 is unlocked, the battery pack 226 is ejected under the action of the elastic force of the spring, which is beneficial to quick taking and placing of the battery pack 226 and improves the replacement speed.

In order to facilitate taking and placing of the battery pack 226, in an embodiment, the casing 200 includes a flip cover 223, the flip cover 223 is rotatably connected with the battery connecting portion 220, specifically, a plurality of shaft fixing seats are disposed at the dividing position of the top of the battery connecting portion 220 and the first accommodating cavity 210, the shaft fixing seats are disposed at intervals, a rotation shaft is disposed on the shaft fixing seats, and the flip cover 223 is rotatably connected with the battery connecting portion 220 through the rotation shaft. The turning cover 223 is rotatably connected with the battery connecting part 220, so that the battery pack 226 can be conveniently and rapidly taken and placed, the waterproof and dustproof protection is provided for the battery pack 226, and the service life of the battery pack 226 is prolonged. The rotation angle of the flip cover 223 and the battery connecting part 220 is limited by the limiting clamping groove, and is specifically adjusted according to the actual situation of the battery pack 226, which is not limited in the present application.

In one embodiment, in order to ensure that the flip cover 223 does not automatically open under complex conditions such as vibration during use, it is only opened quickly when the battery pack 226 needs to be replaced or the like. A lock catch 224 is disposed between the flip cover 223 and the battery connecting portion 220, and preferably, the lock catch 224 includes a first rotating plate and a second rotating plate that rotate relatively, wherein the first rotating plate is rotatably connected to the front end of the battery connecting portion 220, and the first rotating plate rotates around a rotating shaft on the battery connecting portion 220. One end of the first rotating plate far away from the rotating shaft of the battery connecting part 220 is rotationally connected with a second rotating plate, one end of the second rotating plate close to the first rotating plate is provided with a clamping part, and the front end of the overturning cover 223 is provided with a clamping groove matched with the clamping part. When the latch 224 is in an open state, the front ends of the first and second rotating plates located at the outer wall of the battery connecting portion 220 are in a natural sagging state. When the locking is needed, the first rotating plate is rotated to vertically upwards, then the second rotating plate is rotated until the clamping part is inserted into the arc-shaped clamping groove in a rotating mode, locking is achieved, and the overturning cover 223 and the battery connecting part 220 are relatively fixed.

The utility model provides a horizontal unit head has and utilizes radiator fan 500, rotates through rotor shaft 310 and drives radiator fan 500 and rotate, realizes the whole overall heat dissipation to the unit head, effectively improves the heat dissipation ability of control assembly 211, prevents that the unit head heat from concentrating the beneficial effect that breaks down. Therefore, the application effectively overcomes some practical problems in the prior art, and has high utilization value and use significance. The foregoing embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which may be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the disclosure be covered by the claims of this application.

Claims (10)

1. A transverse power head, comprising:

the motor comprises a motor bracket, wherein a motor assembly cavity is formed in the motor bracket, a motor is assembled in the motor assembly cavity, the motor comprises a motor stator and a motor rotor, and the motor assembly cavity is communicated with the outside air through a first outer through hole;

the shell is arranged on the motor bracket, a first accommodating cavity for assembling the control assembly is arranged in the shell, and a second outer through hole is formed in the first accommodating cavity;

the heat dissipation air path is sequentially communicated with the first outer through hole, the motor assembly cavity, the first accommodating cavity and the second outer through hole.

2. The transverse power head as recited in claim 1, wherein a first fan is disposed in the heat dissipation air path, and the first fan is disposed on a rotor shaft of the motor rotor.

3. The transverse power head as claimed in claim 2, wherein the first fan is disposed at a tail end of the rotor shaft at a top of the first outer port, and external air enters the first accommodating chamber through the second outer port, flows through the coil winding assembled in the motor assembling chamber, and is discharged through the first outer port by being driven by the first fan.

4. The transverse power head as claimed in claim 3, wherein a second fan is arranged in the heat dissipation air path, the second fan is arranged on the side wall of the first accommodating cavity, and the air outlet direction of the second fan is perpendicular to the ventilation direction of the second outer through hole.

5. The transverse power head as recited in claim 2, wherein the first fan is disposed at a front end of the rotor shaft, and the first accommodating chamber and the motor assembly chamber are disposed on both sides of the first fan in the cooling air path.

6. The transverse power head as claimed in claim 1, wherein the heat dissipation air path comprises a first inner through hole and a second inner through hole;

the first inner through hole is arranged at the top of one side of the motor assembly cavity, which is far away from the first outer through hole;

the second inner through hole is communicated with the first inner through hole, and the second inner through hole is arranged at the bottom of one side, far away from the second outer through hole, of the first accommodating cavity.

7. The transverse power head as claimed in claim 1, wherein the first outer port penetrates the motor bracket downwards, a ventilation slot is formed in the side wall of the bottom surface of the motor bracket, and the first outer port is communicated with the outside air through the ventilation slot; the second outer through hole is arranged on the bottom surface of the shell.

8. The transverse power head as recited in claim 1, wherein a bottom of the motor bracket is provided with a complete machine mounting surface, the complete machine mounting surface being substantially parallel to a rotor axis of the motor rotor.

9. The transverse power head as claimed in claim 1, wherein a second accommodating cavity is provided in the housing, and a battery pack is detachably fixed in the second accommodating cavity.

10. The transverse power head as recited in claim 1, wherein said second outer port is provided with a filter means.