CN218110325U - Shell assembly of electric tool and electric tool - Google Patents

Abstract

The utility model provides an electric tool's shell subassembly and electric tool, the shell subassembly includes: the battery pack mounting shell is used for mounting a battery pack of the electric tool and comprises a matching sliding groove formed by combining a first shell and a second shell; the shell main body is provided with a first mounting position which is matched and connected with the battery pack mounting shell; the first shell and the second shell are spliced along the transverse direction of the shell main body, and the first installation position is spliced by the third shell and the fourth shell along the longitudinal direction of the shell main body. The utility model provides a because the battery package installation position of installation battery package directly comprises the grinder body for with the in-process of frequent dismouting of battery package with it, easily cause the damage to the grinder body and lead to when the casing position that forms battery package installation position when the grinder body corresponds takes place to damage, then need change whole casing, lead to the technical problem that the replacement cost increases.

Description

Shell assembly of electric tool and electric tool

Technical Field

The utility model relates to an electric tool technical field particularly, relates to an electric tool's shell subassembly and electric tool.

Background

A sander is a power tool frequently used in sanding and polishing operations. The handheld sander is popular among users due to the advantages of convenience in use, flexibility in operation and the like, and can be used for sanding work on surfaces such as wooden products, metal products, plastic products, walls and the like. A common handheld sander mainly comprises a sander body and a bottom plate, wherein the bottom plate is installed on the sander body, and a motor in the sander body drives the bottom plate to do reciprocating swing motion through an eccentric mechanism, so that sanding and polishing operations are performed on workpieces.

In order to improve the use versatility of the sander, it is common to provide a battery pack on the sander body, so that the sander can still be used without an external power supply. However, the related art has at least one of the following technical problems: because battery package and grinder body can dismantle the setting, and the battery can appear the electric quantity inadequately and will pull down the condition in the use unavoidably, and because the battery package installation position of installation battery package directly comprises the grinder body, make the in-process with the frequent dismouting of battery package with it, easily cause the damage to the grinder body, and because this internal installation space that is equipped with of grinder is used for holding numerous electronic components such as drive assembly and transmission part, thereby when making the grinder body correspond the casing position that forms battery package installation position and take place to damage, then need change whole casing, lead to the replacement cost increase.

SUMMERY OF THE UTILITY MODEL

The utility model provides a because the battery package installation position of installation battery package directly comprises the grinder body for with the in-process of frequent dismouting of battery package with it, easily cause the damage to the grinder body and lead to when the casing position that the grinder body corresponds formation battery package installation position takes place to damage, then need change the whole casing, lead to the technical problem that the replacement cost increases.

In order to solve the above problem, the present invention provides a housing assembly for an electric power tool, including: the battery pack mounting shell is used for mounting a battery pack of the electric tool and comprises a matching sliding groove formed by combining a first shell and a second shell; the shell main body is provided with a first mounting position which is matched and connected with the battery pack mounting shell; the first shell and the second shell are spliced along the transverse direction of the shell main body, and the first installation position is spliced along the longitudinal direction of the shell main body by the third shell and the fourth shell.

Compared with the prior art, the technical scheme has the following technical effects: combine this technical scheme content for sander body and battery package installation position separation setting, also be shell main part and battery package installation shell separation setting, then, when battery package appeared the electric quantity not enough or when the trouble needs the dismantlement, still can make battery package installation shell stay in shell main part, also made battery package installation shell realize being connected between battery package and the shell main part as middle casing. Therefore, in the process of assembling and disassembling the battery pack for many times, the damage caused is limited to the installation of the battery pack, the structural damage to the shell main body is greatly reduced, and the replacement cost is greatly reduced. In addition, when the battery pack mounting shell is mounted on the shell main body, the splicing direction of the battery pack mounting shell and the splicing direction of the shell main body are intersected to form approximately vertical arrangement, so that when the battery pack is mounted on the battery pack mounting shell, the first shell and the second shell are assembled more tightly and reliably. For example, the battery pack slides into the matching sliding groove along the splicing direction of the battery pack mounting shell.

In an example of the present invention, the battery pack mounting case includes: the plug connector is arranged in the matching sliding groove and is used for being electrically connected with the battery pack; the limiting piece is arranged at one end, far away from the plug connector, of the matching chute; when the battery pack moves along the direction of the sliding rail of the matching sliding groove to realize the electrical connection with the plug connector, the limiting part is in limiting matching with the battery pack to limit the battery pack to be separated from the matching sliding groove.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: can make the plug connector can more stably must set up in the cooperation spout.

In an example of the present invention, the battery pack mounting case includes: the plug-in mounting groove is formed at the splicing end parts of the first shell and the second shell and is used for mounting the plug connector; a damping unit connected to either end of the insert mounting groove in the same direction as the longitudinal direction; when the damping unit is correspondingly arranged on either one of the first shell or the second shell, the damping unit applies elastic pressure towards the other one of the first shell and the second shell to the limiting piece.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: on one hand, the vibration degree transmitted from the shell main body to the plug-in mounting groove is reduced through the damping unit, so that the electric connection between the battery pack and the plug-in connector is more stable; on the other hand, under the action of the elastic pressure of the damping element, the connection between the plug connector and the plug-in mounting groove can be more stable.

In an example of the present invention, the housing main body is provided with an insertion groove formed at a splicing end portion of the third housing and the fourth housing; the battery pack mounting shell is provided with a clamping piece clamped with the inserting groove, and the clamping piece is positioned at one end, far away from the matching sliding groove, of the battery pack mounting shell; when the battery pack mounting shell is mounted to the insertion groove, the battery pack mounting shell protrudes out of the corresponding surface of the shell main body, and a first distance is formed between the battery pack mounting shell and the insertion groove.

Compared with the prior art, the technical scheme has the following technical effects: specifically speaking, laminating between at most partial structure of battery package installation shell and the shell main part to make the operator can hold the position of being connected between battery package installation shell and the shell main part, thereby more convenient and fast pull down battery package and/or battery package installation shell from the shell main part.

On the other hand, the utility model also provides an electric tool, include: a housing assembly as in any of the above examples; the driving component is arranged in the mounting space of the shell component; the output assembly is arranged at one end of the shell assembly and is in driving connection with the driving assembly; when the driving component drives, the output component is driven to do regular orbital motion.

Compared with the prior art, the technical scheme has the following technical effects: the technical effects corresponding to any of the above technical solutions can be achieved, and details are not repeated here.

In an example of the present invention, include: a shock absorbing structure connected between the output assembly and the housing assembly.

Compared with the prior art, the technical scheme has the following technical effects: the vibration degree transmitted to the shell component by the output component is reduced through the damping structure, so that an operator feels more comfortable and holds more stably to avoid separation in the process of actually holding the electric tool for operation.

In an example of the present invention, the output assembly is provided with a sand bottom plate for connecting with a workpiece, and one side of the sand bottom plate facing to the housing assembly is provided with at least one first fitting member; the shock absorption structure is provided with at least one second fitting piece connected with the first fitting piece; wherein a first adjustment distance is formed between the sandshoe and the housing assembly when the first fitting is connected to the second fitting.

Compared with the prior art, the technical scheme has the following technical effects: the shock absorption effect is further improved.

In one example of the present invention, the shock absorbing structure is provided with a plurality of support bars arranged around the periphery of the housing main body; the shell main body is provided with a plurality of mounting holes which are matched and spliced with the plurality of supporting bars; each mounting hole is arranged in one-to-one correspondence with the supporting bars.

Compared with the prior art, the technical scheme has the following technical effects: the connection between the damping structure and the shell main body is more stable and reliable.

In an example of the present invention, include: a locking assembly connected to a surface of the housing body, the locking assembly cooperating with the drive assembly; wherein the locking assembly restricts rotation of a drive shaft of the drive assembly when the locking assembly is in a locked state with the drive assembly; the locking assembly is capable of rotating the drive shaft when the locking assembly is in an unlocked state with the drive assembly.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: through the regulation operation to locking Assembly so that it switches between first state and second state relative drive shaft to realize the effect that can rotate or lock its rotation of drive shaft, specifically, electric tool is the grinder for example, then, the drive shaft is used for driving the sand bottom plate of grinder and makes regular motion at the axis that predetermines within range relative drive shaft place, when needs change the abrasive paper that sets up on the sand bottom plate, can make locking Assembly locking drive shaft's rotation, with the degree of difficulty that reduces change abrasive paper.

In an example of the present invention, include: and the dust collection shell is connected to the shell main body and is provided with a dust collection channel communicated with the installation space.

Adopt the technical scheme of the utility model afterwards, can reach following technological effect:

(1) Combine this technical scheme content for sander body and battery package installation position separation setting, also be shell main part and battery package installation shell separation setting, then, when battery package appeared the electric quantity not enough or when the trouble needs the dismantlement, still can make battery package installation shell stay in shell main part, also made battery package installation shell realize being connected between battery package and the shell main part as middle casing. Thereby make at the in-process of many times loading and unloading battery package, the damage that causes is limited to the battery package installation shell only yet, and greatly reduced to the structural damage of shell main part, and then greatly reduced replacement cost. In addition, when the battery pack mounting shell is mounted on the shell main body, the splicing direction of the battery pack mounting shell and the splicing direction of the shell main body are intersected to form approximately vertical arrangement, so that when the battery pack is mounted on the battery pack mounting shell, the first shell and the second shell are assembled more tightly and reliably. For example, the battery pack slides into the matching sliding groove along the splicing direction of the battery pack mounting shell;

(2) On one hand, the vibration degree transmitted from the shell main body to the plug-in mounting groove is reduced through the damping unit, so that the electric connection between the battery pack and the plug-in is more stable; on the other hand, under the action of the elastic pressure of the damping element, the connection between the plug connector and the plug-in mounting groove can be more stable.

Drawings

Fig. 1 is a schematic structural diagram of a housing assembly of an electric tool according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of fig. 1 from another view angle.

Fig. 3 is a schematic structural view of the housing main body in fig. 1.

Fig. 4 is a schematic structural view of the battery pack mounting case of fig. 1.

Fig. 5 is a schematic view of the first housing, the second housing and the plug connector in fig. 4.

Fig. 6 is a schematic structural diagram of the heat dissipation assembly in fig. 1.

Fig. 7 is a partial schematic view of fig. 1.

Fig. 8 is a schematic structural diagram of fig. 7 from another view angle.

Fig. 9 is a partial schematic view of the housing body of fig. 1.

Fig. 10 is an enlarged view of fig. 9 at a.

Fig. 11 is a schematic view of the mating connection of the housing body and the drive assembly within the power tool of fig. 1.

Fig. 12 is a schematic view of the housing main body and the driving assembly in another view of fig. 11.

Fig. 13 is a schematic view of the mating connection of the housing assembly and the locking assembly from a further perspective of fig. 1.

Fig. 14 is a sectional view taken along the line B-B in fig. 13.

Fig. 15 is a schematic view of the output assembly and the shock-absorbing structure.

Fig. 16 is a schematic view of the shock-absorbing structure of fig. 15.

Fig. 17 is an enlarged view at C in fig. 16.

Fig. 18 is a schematic structural view of the elastic block in fig. 15.

Description of reference numerals:

100-a housing assembly; 10-battery pack mounting case; 11-a first housing; 12-a second housing; 13-matching sliding grooves; 14-a plug-in unit; 141-a limit piece; 15-insert mounting groove; 16-a damping unit; 20-a housing body; 201-heat dissipation opening; 21-a third housing; 22-a fourth housing; 23-inserting grooves; 24-a limit groove; 25-mounting grooves; 26-a first limiting clamping groove; 261-a first annular raised plate; 262-a second arcuate raised panel; 263-second limiting clamping groove; 264-clamping the space; 30-a dust collecting housing; 31-a dust collecting channel; 40-a dust-proof housing;

200-a power tool; 210-a drive assembly; 211-drive motor; 2111-a drive shaft; 2112-first drive shaft; 2113-an output shaft; 2114-plug-in holes; 212-a connecting bracket; 2121-connecting sleeve; 2122-limit chuck; 2123-a catch; 2131-outer rotor; 2132-inner rotor; 220-a shock-absorbing structure; 221-a connection base; 222-a support bar; 223-a support base; 224-connecting hole; 225-a support space; 226-an elastic block; 2261-elastic sleeve; 2262-snap; 2263-deformation space; 227-mounting holes; 230-an output component; 231-a sand bed plate; 232-a first mating member; 240-a locking assembly; 241-pressing piece; 2411-pressing end; 2412-a mating end; 242-a resilient member; 243-stop piece; 250-a heat dissipation assembly; 251-a heat dissipation turntable; 252-a first heat dissipating arc structure; 253-a second heat dissipating arch structure; 254-a first distance; 255-a second distance; 256-first mating distance; 270-connecting member 270.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

The first embodiment is as follows:

referring to fig. 1, a schematic structural diagram of a housing assembly 100 of an electric power tool 200 according to an embodiment of the present invention is shown. Referring to fig. 2 to 18, the case assembly 100 includes, for example, the battery pack mounting case 10 and the case main body 20: the battery pack mounting case 10 is used for mounting a battery pack of the electric tool 200, and the battery pack mounting case 10 includes a fitting chute 13 formed by combining a first housing 11 and a second housing 12; the shell main body 20 is provided with a first mounting position which is matched and connected with the battery pack mounting shell 10; the first housing 11 and the second housing 12 are spliced along the transverse direction of the housing main body 20, and the first mounting position is spliced along the longitudinal direction of the housing main body 20 by the third housing 21 and the fourth housing 22.

In a concrete example, it is common, in order to reduce cost, for example, directly set up battery package installation position on the grinder body, but because battery package and grinder body can dismantle the setting, and the circumstances that the electric quantity is not enough and will pull it down can appear in the use unavoidably, and because the battery package installation position of installation battery package directly comprises the grinder body, make the in-process with its frequent dismouting of battery package, easily cause the damage to the grinder body, and because the installation space that is equipped with in the grinder body is used for holding numerous electronic components such as drive assembly 210 and transmission part, thereby when making the grinder body correspond the casing position that forms battery package installation position and take place to damage, then need change the whole casing, lead to the replacement cost increase.

Therefore, the content of the technical scheme is combined, so that the sander body and the battery pack mounting position are arranged in a separated mode, namely the outer shell main body 20 and the battery pack mounting shell 10 are arranged in a separated mode, and therefore when the battery pack is insufficient in electricity or fails and needs to be detached, the battery pack mounting shell 10 can still be made to be retained on the outer shell main body 20, namely the battery pack mounting shell 10 serves as a middle shell to achieve connection between the battery pack and the outer shell main body 20. Therefore, in the process of assembling and disassembling the battery pack for many times, the damage caused is only limited to the installation of the shell 10 on the battery pack, the structural damage to the shell main body 20 is greatly reduced, and the replacement cost is greatly reduced. In addition, since the battery pack mounting case 10 is mounted to the housing main body 20, the splicing direction of the battery pack mounting case 10 and the splicing direction of the housing main body 20 intersect to be disposed substantially perpendicularly, so that the assembly between the first case 11 and the second case 12 is more compact and reliable when the battery pack is mounted to the battery pack mounting case 10. For example, the battery pack is slid into the matching sliding groove 13 along the splicing direction of the battery pack mounting case 10.

Preferably, the battery pack mounting case 10 includes, for example, a plug 14 and a stopper 141: the plug connector 14 is arranged in the matching sliding groove 13, and the plug connector 14 is used for being electrically connected with the battery pack; the limiting piece 141 is arranged at one end of the matching sliding chute 13 far away from the plug connector 14; when the battery pack moves along the sliding rail direction of the matching sliding groove 13 to electrically connect with the plug 14, the limiting member 141 is in limiting fit with the battery pack to limit the battery pack from coming out of the matching sliding groove 13. The plug 14 can be more stably disposed in the fitting chute 13.

Preferably, the battery pack mounting case 10 includes, for example, an insert mounting groove 2515 and a damping unit 16. An insert mounting groove 2515 is formed at the spliced end of the first housing 11 and the second housing 12, the insert mounting groove 2515 being used for mounting an insert 14; the damping unit 16 is connected to either one end portion of the insert mounting groove 2515 in the same longitudinal direction; when the damping unit 16 is correspondingly disposed on either one of the first housing 11 or the second housing 12, the damping unit 16 applies an elastic pressure to the limiting member 141 toward the other one of the two housings.

In one specific example, the power tool 200 is, for example, a sander, and the sander requires an operator to apply a pressing force to the sander, which presses against a workpiece to be worked, in a sanding operation, so that the surface of the workpiece to be worked is sufficiently sanded. It is inevitable that vibration is generated during the grinding process, and thus, by providing the damping unit 16 in the plug-in mounting groove 2515, on one hand, the degree of vibration transmitted from the case main body 20 to the plug-in mounting groove 2515 is reduced by the damping unit 16, so that the electrical connection between the battery pack and the plug 14 is more stable; on the other hand, the connection between the plug 14 and the plug mounting groove 2515 can be made more stable by the elastic pressure of the damping member.

Preferably, the housing main body 20 is provided with a splicing groove 23 formed at the splicing end of the third shell 21 and the fourth shell 22; the battery pack mounting shell 10 is provided with a clamping piece 2123 clamped with the inserting groove 23, and the clamping piece 2123 is positioned at one end of the battery pack mounting shell 10 far away from the matching sliding groove 13; when the battery pack mounting case 10 is mounted to the inserting groove 23, the battery pack mounting case 10 protrudes from the corresponding surface of the housing main body 20, and a first distance 254 is formed therebetween, where the first distance 254 is d.

Specifically, at most, a part of the structure of the battery pack mounting case 10 is attached to the housing main body 20, so that an operator can hold the portion of the battery pack mounting case 10 that is not connected to the housing main body 20, thereby facilitating the detachment of the battery pack and/or the battery pack mounting case 10 from the housing main body 20.

Example two:

referring to fig. 1, it is a schematic structural diagram of an electric tool 200 according to a second embodiment of the present invention. With reference to fig. 2-18, the power tool 200, for example, includes a drive assembly 210, an output assembly 230, and the housing assembly 100 as in the first embodiment: the driving member is provided in the installation space of the housing assembly 100; the output component 230 is disposed at one end of the housing assembly 100, and the output component 230 is in driving connection with the driving component 210; when the driving assembly 210 drives, the output assembly 230 is driven to move in a regular orbit.

Preferably, the power tool 200 includes, for example, a shock absorbing structure 220, the shock absorbing structure 220 being connected between the output assembly 230 and the housing assembly 100.

Preferably, the output assembly 230 is provided with a sand bottom plate 231 for connecting with a workpiece, and one side of the sand bottom plate 231 facing to the housing assembly 100 is provided with at least one first fitting member 232; the shock-absorbing structure 220 is provided with at least one second fitting member connected to the first fitting member 232; wherein a first adjustment distance is formed between the sand floor 231 and the housing assembly 100 when the first fitting 232 is connected with the second fitting.

Preferably, the shock-absorbing structure 220 is provided with a plurality of support bars 222 disposed around the circumference of the housing body 20; the housing main body 20 is provided with a plurality of mounting holes which are matched and inserted with the plurality of supporting bars 222; wherein each mounting hole is arranged corresponding to the support bar 222.

Specifically, the shock-absorbing structure 220 includes, for example, a connection base 221 and a plurality of supporters. The connecting base 221 is provided with a plurality of mounting positions near the edge thereof; the plurality of supporting members are connected with the plurality of mounting positions in a one-to-one correspondence manner, the plurality of supporting members protrude from the first end face connected with the connecting base 221 in the direction towards the second end face, the second end face is arranged opposite to the first end face, and the connecting base 221 and the plurality of supporting members are integrally formed. When the damping structure 220 is disposed between the sand bottom plate 231 and the housing body 20, the plurality of supporting members are located at one side of the connection base 221 close to the housing body 20, the connection base 221 is connected to the sand bottom plate 231, and the plurality of supporting members are connected to the housing body 20.

In one embodiment, the electric tool 200 is, for example, a sander, one end of the housing body 20 near the shock absorbing structure 220 is provided with a plurality of slots for inserting a plurality of supporting members, and the plurality of supporting members and the plurality of slots are matched in a one-to-one correspondence, specifically, the number of the supporting members may be four, and the connecting base 221 may be a rectangular base, so that the four supporting members are respectively disposed at four corners of the rectangular base and extend toward a surface far away from the rectangular base. The shock-absorbing structure 220 may be detachably connected to the sand bottom plate 231, so that when the shock-absorbing performance of the shock-absorbing structure 220 is reduced, the shock-absorbing structure can be easily detached from the sand bottom plate 231 and the housing main body 20, and then replaced with a new shock-absorbing structure 220. Combine this technical scheme, owing to connect base 221 and a plurality of support piece and set up for integrated into one piece for reduced and installed the shock-absorbing structure 220 to the sand bed plate 231 and the casing main part 20 on the degree of difficulty, in addition, still make the in-process of processing production shock-absorbing structure 220, reduced the demolding number of times and then reduced manufacturing cost.

More specifically, because the plurality of supporting pieces are inserted into the plurality of slots, on one hand, the plurality of supporting pieces are prevented from being exposed to the visual angle of an operator, so that the whole appearance aesthetic feeling of the sander is reduced; on the other hand, can understand, the in-process that the work piece was being treated to the grinder, need apply the extrusion force of treating the work piece extrusion towards the grinder, in order to improve the efficiency of treating the surface of work piece and polishing, and if invert shock-absorbing structure 220 the mounted position between sand bottom plate 231 and shell main part 20, also make to connect base 221 and mounting plate and be connected, a plurality of support piece are connected with sand bottom plate 231, will make sand bottom plate 231 when receiving the extrusion force, because the extension length of a plurality of support pieces is greater than the thickness of connecting base 221, thereby make under the extrusion force effect, combine drive assembly 210 to drive sand bottom plate 231 under the effect of presetting scope reciprocating motion, easily make a plurality of support piece take place horizontal bending deformation, also make the processing state of polishing unstable, thereby reduce machining efficiency.

Further, the support member includes, for example, a support base 223 and a plurality of support bars 222. A plurality of support bars 222 are arranged around the circumference of the mounting locations corresponding thereto; the supporting base 223 is disposed at one end of the plurality of supporting bars 222 far away from the connecting base 221; wherein, a plurality of support bars 222 surround the installation position to form a support space 225. Specifically, because the supporting space 225 is enclosed by a plurality of support bars 222 and establishes the formation, in other words, through carrying out cavity treatment to support piece, and then make in the course of the actual processing of polishing, the vibrations that are transmitted to a plurality of support pieces by connecting base 221 obtain weakening to a certain extent, specifically speaking, compare in whole solid setting with support piece, because in this technical scheme, enclose through a plurality of support bars 222 and establish the mode that forms supporting space 225 and constitute support piece and can make the vibrations of a plurality of support bars 222 have the effect of mutual offset part at least, further reduced the vibration intensity of transmitting to on the shell main part 20, so that the operator can more stably hold the grinder, improve the use travelling comfort.

Preferably, at least two support bars 222 adjacently arranged in the plurality of support bars 222 forming the same support space 225 form a first space therebetween; the outer side surface of the support bar 222 away from the support space 225 is an arc surface, and the axes corresponding to the arc surfaces are overlapped.

On the basis of the above specific example, in the specific example, since the axes corresponding to the plurality of arc surfaces are overlapped, it can be understood that the supporting member formed by combining the plurality of supporting bars 222 is composed of a plurality of sections of annular pillars arranged concentrically, and accordingly, the inserting groove is also a circular hole groove matched with the shape of the supporting member, on one hand, the matching difficulty between the shock absorbing structure 220 and the housing main body 20 is reduced; on the other hand, since the plurality of arc surfaces of the supporting member can be sufficiently contacted with the circular hole grooves, the stable fit between the shock absorbing structure 220 and the housing main body 20 is improved.

Preferably, the mounting position is a mounting hole 227, and at least one support bar 222 of the plurality of support bars 222 constituting the same support space 225 is provided with a protruding member; the protrusion is disposed in the supporting space 225, and extends toward the axis of the mounting hole 227. Specifically, for example, the shock-absorbing structure 220 may be a rubber member, and correspondingly, the sand bottom plate 231 has a connection protrusion cylinder inserted into the mounting hole 227, and since the protrusion member is disposed in the supporting space 225, the connection protrusion cylinder is extruded by the protrusion member to enable the sand bottom plate 231 to be stably connected with the shock-absorbing structure 220 in the process that the connection protrusion cylinder extends into the supporting space 225.

Preferably, the diameter of the circular hole surrounded by the mounting hole 227 is D; the minimum aperture of the corresponding support space 225 defined by the plurality of support bars 222 is D; the length of the protruding part extending towards the axis direction is D, and D is larger than or equal to D > -D. The stability of being connected between sand bottom plate 231 and shock-absorbing structure 220 is further improved for the two are connected more reliably.

Preferably, the support base 223 is provided with a connection hole 224 communicating with the mounting hole 227 and the support space 225; wherein the fitting of the shock-absorbing structure 220 to the installation space is accomplished by passing the connection member 270 through the connection hole 224.

Further, a plurality of matching convex parts are arranged on one side of the sand bottom plate 231 close to the shock absorption structure 220; the electric tool 200 further includes a plurality of elastic blocks 226, for example, the elastic blocks 226 are sleeved on the matching protrusion members, and specifically, the elastic blocks 226 are connected with the matching protrusion members in a one-to-one correspondence; wherein the sand bottom plate 231 is connected to a plurality of mounting locations by means of the resilient blocks 226.

Preferably, the elastic block 226 includes, for example, an elastic sleeve 2261 and a buckle 2262, wherein a deformable deformation space 2263 is provided in the elastic sleeve 2261, and one end of the elastic sleeve 2261 is sleeved on the corresponding matching protrusion; the snap 2262 is arranged at one end of the elastic sleeve 2261 far away from the sand bed plate 231, and the snap 2262 is arranged around the circumference of the corresponding end of the elastic sleeve 2261; the buckles 2262 extend into the supporting spaces 225 of the corresponding supporting members and are buckled to the bottom end of the connecting base 221 near the supporting members to limit the separation of the two.

Preferably, an accommodating groove is formed in one side of the sand bottom plate 231, which is far away from the driving assembly 210, and a matching hole for the driving assembly 210 to pass through is formed in a position corresponding to the accommodating groove; the drive assembly 210 includes, for example, an output shaft 2113 and a lock. The output shaft 2113 extends into the matching hole, and an eccentric distance is formed between the axis of the output shaft 2113 and the axis of the matching hole; the locking piece is connected with the output shaft 2113 and correspondingly arranged in the accommodating groove; wherein the locking element brings the sand bed plate 231 in regular motion when the output shaft 2113 rotates around its axis.

Preferably, the power tool 200 further includes, for example, a locking assembly 240, the locking assembly 240 is attached to a surface of the housing main body 20, and the locking assembly 240 is engaged with the driving assembly 210; wherein, when the locking assembly 240 is in a locked state with the driving assembly 210, the locking assembly 240 restricts the rotation of the driving shaft of the driving assembly 210; when the locking assembly 240 is in an unlocked state with the drive assembly 210, the locking assembly 240 is able to rotate the drive shaft.

Specifically, the driving assembly 210 includes, for example, a driving motor 211 and a connecting bracket 212. The connecting bracket 212 is sleeved on the driving shaft, and the connecting bracket 212 is rotatably connected with the driving shaft; wherein when the driving assembly 210 is mounted to the power tool

200, the connecting bracket 212 engages the retaining groove 24 of the housing body 20 to rotate the drive shaft about its axis.

In a specific example, combine this technical scheme content, with drive assembly 210 applied to the shell main part 20 of grinder in, make when carrying out processing operation, utilize the spacing cooperation of linking bridge 212 and spacing groove 24 in order to realize spacing to the drive shaft, make the drive shaft can only rotate around its axis, it is concrete, treat the in-process that the processing piece was treated to the grinder to carry out the surface sanding, because the sand bottom plate 231 of grinder treats the surface of processing piece and extrudees and then makes the possibility that the drive shaft deflection appears increased, combine the limiting displacement of linking bridge 212, improved the drive shaft and can only carry out rotatory stability around its axis, also avoided simultaneously only causing the drive shaft to appear the motion of deviating from its axis place vertical direction position and the inside of driving motor 211 to cause the damage through the casing spacing cooperation of shell main part 20 and driving motor 211's casing.

Preferably, the attachment bracket 212 includes, for example, an attachment sleeve 2121 and a limit chuck 2122. The connecting rotary drum is sleeved on the outer surface of the driving shaft and is arranged coaxially with the driving shaft; the limiting chuck 2122 is connected to one end of the connecting drum far from the driving motor 211, and the limiting chuck 2122 is provided with at least one clamping piece 2123 extending in the axial direction far from the driving shaft; wherein, the engaging piece 2123 is used for cooperating with the limiting groove 24.

In a specific example, the number of the engaging pieces 2123 may be two, two engaging pieces 2123 are disposed on any axis where the limiting chuck 2122 passes through the axis, and the engaging pieces 2123 have supporting surfaces extending along the circumferential direction of the limiting chuck 2122, so that when the engaging pieces 2123 are engaged with the limiting grooves 24, the contact area with the limiting grooves 24 can be increased, the stable engagement between the connecting bracket 212 and the housing main body 20 is realized, and the stable limiting effect on the driving shaft can be further achieved.

Preferably, the driving motor 211 is an outer rotor 2131 motor. By selecting the drive motor 211 as the outer rotor 2131 motor, heat dissipation can be facilitated. Specifically, the outer rotor 2131 motor is also an outer rotor 2131 brushless motor, and has the characteristic of simple structure.

Preferably, the outer rotor 2131 motor includes, for example, an outer rotor 2131 and an inner rotor 2132. A rotor space is arranged in the outer rotor 2131; the inner stator is arranged in the rotor space and is arranged coaxially with the outer rotor 2131; the connection bracket 212 abuts the inner stator to restrict the inner stator from being removed from the rotor space. The inner stator is prevented from being removed from the rotor space by the abutting fit of the connecting bracket 212 and the inner stator, and the stability of the fit of the outer rotor 2131 and the inner stator is realized.

Preferably, the housing main body 20 has a mounting groove 25 corresponding to the outer surface of the driving component 210, and the mounting groove 25 is communicated with a mounting space for accommodating the driving component 210 in the housing main body 20; electric tool

200, for example, includes a locking assembly 240, the locking assembly 240 being disposed in the mounting slot 25, and the locking assembly 240 being switchable between a first state and a second state relative to the drive shaft to enable the drive shaft to rotate or be locked. The locking assembly 240 is operated by adjustment to switch between a first state and a second state relative to the drive shaft, thereby enabling rotation of the drive shaft or locking rotation thereof, and in particular, a power tool

200 may be, for example, a sanding machine, such that the driving shaft is used to drive the sanding plate 231 of the sanding machine to move regularly within a predetermined range relative to the axis of the driving shaft, when the sandpaper arranged on the sanding plate 231 needs to be replaced, the locking assembly 240 may be enabled to lock the rotation of the driving shaft, so as to reduce the difficulty in replacing the sandpaper.

Preferably, the locking assembly 240 includes, for example, a pressing member 241 and an elastic member 242. The pressing piece 241 is provided with a pressing end 2411 and a mating end 2412 which are oppositely arranged, and the pressing end 2411 is installed on the surface of the shell main body 20 corresponding to the installation groove 25; the mating end 2412 extends into the mounting space so as to mate with the drive shaft; the elastic member 242 is arranged between the mounting groove 25 and the pressing end 2411; wherein the resilient member 242 is compressed to cause the mating end 2412 to lock the drive shaft.

Specifically, the elastic element 242 is reset to automatically switch the locking assembly 240 between the first state and the second state, so that the overall adjustment efficiency is improved, and the difficulty in adjusting the switching between the two states is reduced, and meanwhile, the structural characteristics of the elastic element 242 are combined, for example, when the locking assembly is compressed and deformed by being squeezed, the matching end 2412 moves toward the direction close to the driving shaft, so that the driving shaft is contacted with the driving shaft to limit the rotation of the locking assembly, when an operator releases the pressing action on the pressing element 241, the elastic element 242 can separate the matching end 2412 from the driving shaft under the action of the reset force of the elastic element in the initial state, so that the driving shaft can rotate, so that the locking operation of the driving shaft and the unlocking operation of the driving shaft are simple and reliable, and due to the existence of the elastic element 242, the situation that the driving shaft is locked due to the mistaken touch of the pressing element 241 is avoided, so that the influence on the normal operation of the machine is reduced, and the damage to sanding of the driving motor 211 is also reduced.

Preferably, the drive shaft includes, for example, a first drive shaft 2112 and an output shaft 2113. At least a portion of the first drive shaft 2112 is provided inside the drive motor 211; the output shaft 2113 is connected to an end of the first driving shaft 2112 away from the driving motor 211 in a transmission manner, and at least one insertion hole 2114 for matching with the mating end 2412 is formed along a circumferential surface of the output shaft 2113.

Preferably, the output shaft 2113 includes, for example, a connection section and a fitting section. The connecting section is arranged coaxially with the first driving shaft 2112 and is in transmission connection with the first driving shaft 2112; the matching section is arranged at one end of the connecting section far away from the first driving shaft 2112, and the inserting hole 2114 is formed in the matching section; wherein the plug-in hole 2114 extends in the radial direction of the mating segment.

Further, in order to prevent the locking assembly 240 from being removed from the mounting groove 25 by the elastic member 242, a stop piece 243 is provided on the circumferential outer surface of the mating end 2412, and specifically, the stop piece 243 is located in the mounting space of the housing main body 20 and corresponds to the position where the mounting groove 25 is formed on the housing main body 20. Then, under the elastic force of the elastic member 242 returning to its shape, the stopper piece 243 abuts against the inner wall of the housing main body 20 corresponding to the mounting groove 25 to prevent the lock assembly 240 from coming off from the mounting.

Preferably, the power tool 200 includes, for example, a dust collection housing 30, the dust collection housing 30 is coupled to the housing main body 20, and the dust collection housing 30 has a dust collection passage 31 communicating with the installation space.

Specifically, the electric power tool 200 further includes, for example, a heat dissipation assembly 250, and an installation space and a heat dissipation opening 201 communicating with the installation space are provided in the housing main body 20; the dust collecting body 30 is arranged at the position of the shell body 20 corresponding to the heat radiating assembly 250, and the dust collecting channel 31 of the dust collecting body 30 is communicated with the installation space; wherein, at least one of the plurality of heat dissipation members is disposed on a side of the heat dissipation turntable 251 close to the output assembly 230.

Further, the heat dissipation assembly 250 includes, for example, a heat dissipation turntable 251 and a plurality of heat dissipation members; heat dissipation turntable 251 and electric tool

200, the driving assembly 210 is rotatably connected, and the heat dissipation turntable 251 is provided with a first end face and a second end face which are oppositely arranged; a plurality of heat dissipation members are arranged on the first end surface and/or the second end surface around the circumferential direction of the heat dissipation turntable 251; the heat dissipation distance formed between at least two adjacent heat dissipation members is gradually increased from the center position of the heat dissipation turntable 251 to the outer edge direction of the heat dissipation turntable 251.

In a specific example, the electric tool 200 may be, for example, a sander, and for example, a plurality of heat dissipation members are respectively disposed on the first end surface and the second end surface, so that when the driving assembly 210 drives the heat dissipation turntable 251 to rotate, the heat dissipation members disposed thereon can be driven to rotate, in combination with the content of the present technical solution, due to the layout characteristic of the heat dissipation distance formed between the adjacent heat dissipation members, under the effect of centrifugal force, the temperature concentrated on the surface of the heat dissipation member can be rapidly taken out of the installation space of the housing main body 20 by the heat dissipation opening 201, so that the ambient temperature of the installation space is in a stable low temperature state, and the occurrence of overheating is avoided.

Preferably, the plurality of heat dissipation members include, for example, a first heat dissipation arc-shaped structure 252, the first heat dissipation arc-shaped structure 252 is disposed on the first end surface, and the first heat dissipation arc-shaped structure 252 includes a first end portion and a second end portion that are disposed oppositely, the first end portion is located at a position where the heat dissipation turntable 251 is far away from the circle center thereof, and the second end portion extends toward a direction close to the circle center.

In one embodiment, it can be understood that the larger the surface area of the heat sink for dissipating heat, the greater the heat dissipation efficiency of the heat sink can be, and in combination with the position characteristics of the first heat dissipation arc-shaped structure 252 on the heat dissipation turntable 251, that is, the first heat dissipation arc-shaped structure 252 is disposed at the position of the heat dissipation turntable 251 close to the outer edge thereof, when the heat dissipation turntable 251 rotates around the axis thereof, the linear velocity of the first heat dissipation arc-shaped structure 252 at the position of the outer edge thereof is greater than that at other positions of the heat dissipation turntable 251, so as to facilitate rapid removal of the temperature on the surface of the first heat dissipation arc-shaped structure 252, and since the heat dissipation assembly 250 is disposed opposite to the heat dissipation opening 201 of the housing main body 20, the rapid removal of the heat from the surface of the first heat dissipation arc-shaped structure 252 can be achieved through the heat dissipation opening 201, and the retention time of the heat in the housing main body 20 can be shortened and the problem of heat dissipation obstruction can be avoided; in addition, because the first end is flush with the outer edge of the heat dissipation turntable 251 or is located at the position of the center of the circle where the outer edge is close to the heat dissipation turntable 251, the first end is prevented from extending out of the outer edge to increase the occupied space in the housing main body 20, and thus, the arrangement mode of the first heat dissipation arc-shaped structure 252 in the technical scheme improves the utilization rate of the installation space to a certain extent.

Further, the first heat dissipating arc-shaped structure 252 includes a plurality of first arc-shaped protruding members, for example, and the plurality of first arc-shaped protruding members protrude from the first end face connected thereto toward a direction away from the second end face to form a first height. Specifically, the heat dissipation efficiency of the heat dissipation assembly 250 is further improved.

Preferably, the plurality of heat dissipation members further includes, for example, a second heat dissipation arc-shaped structure 253. The second heat dissipation arc structure 253 is arranged on the second end face, and the second heat dissipation arc structure 253 includes a third end portion and a fourth end portion which are oppositely arranged, the third end portion is located at a position where the heat dissipation turntable 251 is far away from the center of the heat dissipation turntable, and the fourth end portion extends towards a direction close to the center of the heat dissipation turntable; the second heat dissipating arc structure 253 has a plurality of second arc-shaped protrusions, and the direction of the second arc-shaped protrusions extending near the center of the circle on the second end surface is the same as the direction of the first arc-shaped protrusions extending near the center of the circle on the first end surface.

The heat dissipation surface area of the heat dissipation turntable 251 is increased by arranging the heat dissipation parts on the two end surfaces of the heat dissipation turntable 251; in addition, because the direction in which the plurality of second arc-shaped protrusions extend on the second end surface near the center of the circle is the same as the direction in which the plurality of first arc-shaped protrusions extend on the first end surface near the center of the circle, in other words, when the heat dissipation turntable 251 rotates around the axis thereof along the first direction, the direction in which the second end portion of the first heat dissipation arc-shaped structure 252 and the fourth end portion of the second heat dissipation arc-shaped structure 253 extend toward the center of the circle is the same as the first direction, at this time, the distances formed between the positions of the plurality of first arc-shaped protrusions corresponding to the second end portion and the center of the heat dissipation turntable 251 are all equal, and similarly, the distances formed between the positions of the plurality of second arc-shaped protrusions corresponding to the fourth end portion and the center of the heat dissipation turntable 251 are also equal, so that the plurality of heat dissipation members are uniformly distributed on the heat dissipation turntable 251, thereby effectively avoiding the heat dissipation turntable 251 from deflecting due to the non-uniform distribution of the plurality of heat dissipation members arranged thereon in the rotation process, and further increasing the wear between the drive assemblies 210 in transmission connection therewith, thereby reducing the overall service life of the whole.

Preferably, a first distance 254 is formed between any at least two adjacent first arc-shaped protrusions; a second distance 255 is formed between any two adjacent second arc-shaped protruding pieces, and the second arc-shaped protruding pieces protrude from the second end face connected with the second arc-shaped protruding pieces towards the direction far away from the first end face to form a second height; wherein the larger of the first distance 254 and the second distance 255 corresponds to a greater height of the protrusion from the end surface connected thereto than the other.

In one embodiment, in combination with the structural characteristics of the dust collecting channel 31 and the heat dissipating assembly 250, on one hand, heat dissipating members are disposed on both end surfaces of the heat dissipating turntable 251 to improve the efficiency of the heat dissipating turntable 251 in dissipating heat from the heat dissipating opening 201 and the dust removing channel inside the housing main body 20, and in addition, the heat dissipating member disposed on the side close to the output assembly 230 can also be used for exhausting the waste dust and the like generated in the operation process of the sander from the dust collecting channel 31 through the rotating heat dissipating turntable 251, so as to avoid the situation that a large amount of waste dust and the like are accumulated on the processing side of an operator during the polishing operation, which leads to the damage to health of the operator due to the large amount of absorption; on the other hand, it is desirable that the higher radiating piece orientation in heat dissipation carousel 251 is close to the position setting of output subassembly 230 to protruding, specifically speaking, the quantity that can take the second arc protruding piece is less than the quantity of first arc radiating piece, also make first interval be less than the second interval, the second height is greater than the first height of first arc protruding piece this moment, thereby make the rotatory air supply that forms via second heat dissipation arc structure 253 be greater than the rotatory air supply that forms via first heat dissipation arc structure 252 correspondingly, in order to satisfy the collection dirt demand, equally, when output subassembly 230 acts on treating the machined part, the two interact can form higher temperature, combine the above-mentioned analysis, further play the radiating efficiency of improvement.

Preferably, the output assembly 230 and the housing body 20 define a first mating distance 256 therebetween; the electric power tool 200 further includes, for example: the dust-proof housing 40 is connected to an end of the housing main body 20 close to the output housing and corresponds to the first matching distance 256.

Preferably, the housing main body 20 is provided with a first limiting clamping groove 26 for matching with the dust-proof housing 40, and one end of the first limiting clamping groove 26 close to the output component 230 is provided with an opening.

Preferably, the first limit catch 26 is disposed around the circumference of the corresponding end of the housing body 20, and the first limit catch 26 includes, for example, a first annular protruding plate 261 and a second arc-shaped protruding plate 262. The first annular convex plate 261 is provided with at least one second limiting clamping groove 263; the second arc-shaped convex plate 262 is arranged on the outer side of the first annular convex plate 261 far away from the rotation axis of the heat dissipation turntable 251; dust-proof housing 40 presss from both sides and locates in pressing from both sides the space 264 of establishing by first annular bulge board 261 and second arc bulge board 262 constitution, and dust-proof housing 40 is equipped with the joint spare with the joint of the spacing draw-in groove 263 of second.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.

Claims (10)

1. A housing assembly for a power tool, comprising:

the battery pack mounting shell is used for mounting a battery pack of the electric tool and comprises a matching sliding groove formed by combining a first shell and a second shell;

the shell main body is provided with a first mounting position which is matched and connected with the battery pack mounting shell;

the first shell and the second shell are spliced along the transverse direction of the shell main body, and the first installation position is spliced by the third shell and the fourth shell along the longitudinal direction of the shell main body.

2. The housing assembly of claim 1, wherein the battery pack mounting housing comprises:

the plug connector is arranged in the matching sliding groove and is used for being electrically connected with the battery pack;

the limiting piece is arranged at one end, far away from the plug connector, of the matching chute;

when the battery pack moves along the direction of the sliding rail of the matching sliding groove to realize the electrical connection with the plug connector, the limiting part is in limiting matching with the battery pack to limit the battery pack to be separated from the matching sliding groove.

3. The housing assembly of claim 2, wherein the battery pack mounting housing comprises:

the plug-in mounting groove is formed at the splicing end parts of the first shell and the second shell and is used for mounting the plug connector;

a damping unit connected to either end of the insert mounting groove in the same direction as the longitudinal direction;

when the damping unit is correspondingly arranged on either one of the first shell or the second shell, the damping unit applies elastic pressure towards the other one of the first shell and the second shell to the limiting piece.

4. The enclosure assembly of any of claims 1-3,

the shell main body is provided with an insertion groove formed at the splicing end part of the third shell and the fourth shell;

the battery pack mounting shell is provided with a clamping piece clamped with the inserting groove, and the clamping piece is positioned at one end of the battery pack mounting shell, which is far away from the matching sliding groove;

when the battery pack mounting shell is mounted to the insertion groove, the battery pack mounting shell protrudes out of the corresponding surface of the shell main body, and a first distance is formed between the battery pack mounting shell and the insertion groove.

5. An electric power tool, characterized by comprising:

the enclosure assembly of any of claims 1-4;

the driving component is arranged in the mounting space of the shell component;

the output assembly is arranged at one end of the shell assembly and is in driving connection with the driving assembly;

when the driving component drives, the output component is driven to do regular orbital motion.

6. The power tool of claim 5, comprising:

a shock absorbing structure connected between the output assembly and the housing assembly.

7. The power tool of claim 6,

the output assembly is provided with a sand bottom plate used for being connected with a workpiece, and one side of the sand bottom plate, which faces to the shell assembly, is provided with at least one first fitting piece;

the shock absorption structure is provided with at least one second fitting piece connected with the first fitting piece;

wherein a first adjustment distance is formed between the sandshoe and the housing assembly when the first fitting is connected to the second fitting.

8. The power tool of claim 7,

the shock absorption structure is provided with a plurality of supporting bars which are arranged around the shell main body;

the shell main body is provided with a plurality of mounting holes which are matched and spliced with the plurality of supporting bars;

each mounting hole is arranged in one-to-one correspondence with the support bars.

9. The power tool of claim 5, comprising:

a locking assembly connected to a surface of the housing body, the locking assembly cooperating with the drive assembly;

wherein the locking assembly restricts rotation of a drive shaft of the drive assembly when the locking assembly is in a locked state with the drive assembly; the locking assembly is capable of rotating the drive shaft when the locking assembly is in an unlocked state with the drive assembly.

10. The power tool of claim 5, comprising:

and the dust collection shell is connected to the shell main body and is provided with a dust collection channel communicated with the installation space.

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