Electric tool

Abstract

The utility model discloses an electric tool, which comprises a main shell, a first rotating shaft and a second rotating shaft, the battery core assembly is arranged in the main shell through the first opening; the cover body is arranged at the first opening and can be operated to open or close the first opening; wherein a first connecting structure is arranged between the battery cell assembly and the main shell, a second connecting structure is arranged between the cover body and the main shell, and a third connecting structure is arranged between the battery cell assembly and the cover body, so that the main shell, the battery cell assembly and the cover body are connected in pairs.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology, specifically relating to a power tool with a stable and reliable connection. Background Technology

[0002] Handheld power tools such as electric drills, screwdrivers, and wrenches typically require the installation of battery cells inside. These battery cells provide power to the power tools to maintain their operational needs. The battery cells are fixed inside the power tool's housing via a battery compartment.

[0003] In existing technology, the battery compartment and the back cover are fixed to the casing using a snap-fit ​​structure. When the product is dropped, the back cover is prone to detaching from the casing, potentially leading to battery dislodgement or even cracking. Therefore, it is necessary to improve the existing technology to overcome these shortcomings. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a power tool with reliable connection.

[0005] To solve the above-mentioned technical problems, this utility model provides an electric tool, including: a main housing with a first opening formed on its outer wall; a battery cell assembly disposed inside the main housing through the first opening; and a cover disposed at the first opening, operable to open or close the first opening; wherein, a first connection structure is provided between the battery cell assembly and the main housing, a second connection structure is provided between the cover and the main housing, and a third connection structure is provided between the battery cell assembly and the cover, so that the main housing, the battery cell assembly, and the cover are connected in pairs.

[0006] Preferably, the battery cell assembly is installed in the same direction as the cover.

[0007] Preferably, the second connection structure and the third connection structure operate in the same direction.

[0008] Preferably, the battery cell assembly includes a mounting base located within the main housing and a battery cell disposed on the mounting base; the first connection structure includes a first snap fastener and a first fastener cooperating with the first snap fastener, wherein one of the first snap fastener and the first fastener is disposed on the mounting base, and the other is disposed on the main housing; and / or, the first connection structure includes a limiting block and a limiting groove, wherein the limiting block is inserted into the limiting groove, wherein one of the limiting block and the limiting groove is disposed on the mounting base, and the other is disposed on the main housing.

[0009] Preferably, the mating direction between the limiting block and the limiting groove is perpendicular to the installation direction of the battery cell assembly, and the main housing is separately configured in a direction perpendicular to the installation direction of the battery cell assembly.

[0010] Preferably, the second connection structure includes a second buckle disposed on the cover and a second buckle groove disposed on the inner wall of the main housing for engaging with the second buckle.

[0011] Preferably, the third connection structure includes a fastener, and the cover is connected to the battery cell assembly via the fastener, wherein the fastener and the battery cell assembly are threaded together.

[0012] Preferably, the first connecting structure and the second connecting structure are located inside the main housing, and the third connecting structure is partially exposed on the outer wall of the housing formed by the main housing and the cover.

[0013] Preferably, the outer wall of the housing is provided with a shielding member for shielding the exposed portion of the third connecting structure.

[0014] Preferably, the main housing has a receiving cavity for accommodating the battery cell assembly, and the inner wall of the receiving cavity is provided with a rib structure. The rib structure is configured to define the position of the battery cell assembly in the receiving cavity in the circumferential direction. In the mounting direction of the battery cell assembly, the rib structure is spaced apart from the first connecting structure.

[0015] The technical solution provided by this utility model has the following advantages:

[0016] In this embodiment, the main housing, the battery cell assembly, and the cover are connected in pairs using connection structures. This pairwise connection enhances the connection stability and reliability of the battery cell assembly and the cover, preventing the cover from separating from the main housing under external force, thereby preventing the battery cell from falling out of the main housing. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram of the power tool provided by this utility model in a first direction;

[0019] Figure 2A three-dimensional structural diagram of the power tool provided by this utility model in the second direction;

[0020] Figure 3 An exploded view of a portion of the structure of the power tool provided by this utility model;

[0021] Figure 4 An exploded view of the power tool provided by this utility model;

[0022] Figure 5 A cross-sectional structural diagram of the power tool provided by this utility model;

[0023] Figure 6 A schematic diagram of the exploded structure of the main shell;

[0024] Figure 7 This is a schematic diagram of the battery cell assembly in the first direction;

[0025] Figure 8 This is a schematic diagram of the battery cell assembly in the second direction;

[0026] Figure 9 This is a schematic diagram of the mounting base in the first direction;

[0027] Figure 10 This is a schematic diagram of the mounting base in the second direction;

[0028] Figure 11 This is a schematic diagram showing the positional relationship between the rib structure and the battery cell assembly;

[0029] Figure 12 This is a schematic diagram of the internal structure of the first shell.

[0030] Figure 13 for Figure 12 Enlarged structural diagram of region A in the middle;

[0031] Figure 14 This is a schematic diagram of the first housing in a bottom-view direction;

[0032] Figure 15 This is a schematic diagram of the second shell structure. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0035] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0036] like Figures 1 to 5 As shown, this utility model provides a power tool, which includes a main housing 100, a battery cell assembly 200, and a cover 300. A first opening 111 is formed on the outer wall of the main housing 100, and the battery cell assembly 200 is disposed inside the main housing 100 through the first opening 111. The cover 300 is disposed at the first opening 111 so as to be operable to open or close the first opening 111.

[0037] When the cover 300 is positioned at the first opening 111, the main housing 100 and the cover 300 together form the housing of the power tool. The battery assembly 200 is located within the housing and provides power to the actuating components (not shown) of the power tool, enabling them to perform predetermined tasks. Thanks to the battery assembly 200, the power tool can operate normally without the need for an electrical connection between a wire and a socket, providing convenience to the user and expanding the tool's application scenarios, especially in situations where sockets are unavailable, such as outdoors or during power outages.

[0038] The main housing 100 is hollow inside, and the hollow cavity of the main housing 100 is used to accommodate the transmission mechanism, electrical components, etc. The main housing 100 includes a gripping section M and a fuselage section N, which intersect. The gripping section M is distributed approximately along the vertical direction, and the gripping section M and the fuselage section N are distributed at an angle. The angle between the gripping section M and the fuselage section N can be an acute angle, a right angle, or an obtuse angle. It should be noted that in this specification, "approximately" can be understood as close to, approximately, or within a predetermined range from the target value.

[0039] The fuselage section N has a front end N1 and a rear end N2. The motion output end of the actuator is located at the front end N1, and the front end N1 and the rear end N2 are located on opposite sides of the grip section M. Compared to the front end N1, the grip section M is closer to the rear end N2. The aforementioned "front" and "rear" directions are perpendicular to the "up" and "down" directions.

[0040] The grip section M is hollow and cylindrical, with an internal cavity 130 for housing the battery cell assembly 200. The top of the grip section M communicates with the body section N, and the bottom of the grip section M has the aforementioned first opening 111, which communicates with the cavity 130 for discharging and receiving the battery cell assembly 200. The grip section M is ergonomically designed to fit comfortably in the user's hand.

[0041] The battery cell assembly 200 includes a mounting base 210 located within the holding section M and battery cells 220 disposed on the mounting base 210. For example... Figure 7 and Figure 8 As shown, the mounting base 210 has a mounting cavity 211 for mounting the battery cell 220. The mounting base 210 also has an opening communicating with the mounting cavity 211, through which the battery cell 220 is disposed within the mounting cavity 211. The battery cell 220 is cylindrical, with a portion of its circumferential surface located within the mounting cavity 211, and the remaining portion exposed on the outside of the mounting base 210 through the opening. The circumferential surface of the battery cell 220 exposed on the outside of the mounting base 210 is smaller than the circumferential surface of the battery cell 220 located within the mounting cavity 211, ensuring that the battery cell 220 can be securely mounted on the mounting base 210.

[0042] The fact that part of the circumferential surface of the battery cell 220 is located outside the mounting base 210 indicates that the mounting base 210 does not completely wrap around the battery cell 220 in the circumferential direction. This reduces the space occupied by the mounting base 210 in the holding section M, thereby avoiding the problem of the holding section M becoming larger due to the mounting base 210.

[0043] like Figure 9 As shown, the mounting cavity 211 has a first metal contact 212 at its top and a second metal contact 213 at its bottom. One terminal of the battery cell 220 abuts against the first metal contact 212, and the other terminal abuts against the second metal contact 213. The mounting base 210 also has a first circuit board 230 located on the opposite side of the mounting cavity 211. The first circuit board 230 is used for the main control of the power tool. The first metal contact 212 and the second metal contact 213 are electrically connected to the first circuit board 230, and the battery cell 220 supplies power to the first circuit board 230.

[0044] like Figures 7 to 10As shown, the mounting base 210 is also provided with a connecting port 215, which is located between the battery cell 220 and the first circuit board 230, and extends from the top to the bottom of the mounting cavity 211, for connecting the space where the mounting cavity 211 and the first circuit board 230 are located. Electronic components are provided on the reverse side of the first circuit board 230 facing the connecting port 215. The connecting port 215 can expand the mounting space of the first circuit board 230, allowing the electronic components on the reverse side of the first circuit board 230 to partially extend into the mounting cavity 211, utilizing the space within the mounting cavity 211 not occupied by the battery cell 220. Furthermore, both the battery cell 220 and the first circuit board 230 are heat-generating components, generating a large amount of heat during operation. The connecting port 215 helps dissipate heat, preventing heat accumulation between the battery cell 220 and the first circuit board 230.

[0045] A second circuit board 240 is also provided on the end of the mounting base 210 near the cover 300. The second circuit board 240 is electrically connected to the first circuit board 230. The second circuit board 240 is mainly used to display the remaining power of the battery cell 220. For example, the second circuit board 240 is provided with multiple indicator lights 241. The more indicator lights 241 that are lit, the more power is left. The indicator lights 241 should be visible to the user from outside the casing. In one embodiment, the cover 300 is provided with through holes 310 corresponding to the indicator lights 241. The through holes 310 are arranged one-to-one with the indicator lights 241, and the lighting status of the indicator lights 241 can be observed through the through holes 310, thereby understanding the remaining power of the battery cell 220.

[0046] Furthermore, the second circuit board 240 also has a push-button switch 242, which is used to control the display of remaining battery power. A cantilever 320 is provided on the cover 300 corresponding to the push-button switch 242. When the user presses the cantilever 320 towards the push-button switch 242, the cantilever 320 deforms under force, pressing against the push-button switch 242 and triggering it. When the push-button switch 242 is in the closed state, the second circuit board 240 is not working, and the indicator light 241 is completely off. When the push-button switch 242 is in the open state, the second circuit board 240 is working, and the indicator light 241 illuminates accordingly based on the remaining battery power of the battery cell 220. Therefore, the user can decide whether to activate the remaining battery power display function according to their needs, avoiding the problem of the indicator light 241 turning on immediately upon power-on and reducing power consumption.

[0047] The first circuit board 230 and the second circuit board 240 can be fixed to the mounting base 210 by means of snap-fit, adhesive, fastening, etc. Of course, the methods of fixing the first circuit board 230 and the second circuit board 240 to the mounting base 210 include but are not limited to the above-mentioned situations. Welding, hot melting, etc. can also be used, which will not be described in detail here.

[0048] The mounting cavity 211 is also provided with a limiting structure 214 for defining the position of adjacent cells 220. There is a pair of limiting structures 214, which are distributed in the vertical direction. One of them is close to the first metal contact 212, and the other is close to the second metal contact 213. The limiting structure 214 is located in the aforementioned connecting port 215. The limiting structure 214 is roughly inverted "V" shape, and the two arms of the "V" shape are arc-shaped to fit the circumferential surface of the cell 220.

[0049] To address the positioning of the battery cell assembly 200 within the receiving cavity 130, a raised rib structure 700 is provided on the inner wall of the receiving cavity 130. The raised rib structure 700 is used to define the position of the battery cell assembly 200 within the receiving cavity 130 in the circumferential direction. The raised rib structure 700 cooperates with the mounting base 210 and the battery cell 220 respectively, thereby achieving the limiting of the battery cell assembly 200 in the front, back, left, and right directions. The aforementioned "circumferential direction of the receiving cavity 130" refers to the circumferential direction of the gripping section M.

[0050] Specifically, such as Figure 11 As shown, the rib structure 700 includes a first rib 710 that cooperates with the mounting base 210 and a second rib 720 that cooperates with the battery cell 220. The rib structure 700 limits the mounting base 210 and the battery cell 220 respectively, effectively improving the limiting accuracy and limiting effect.

[0051] The first rib 710 is a straight, raised rib extending along the extension direction of the gripping section M. The mounting base 210 is provided with a third rib 216 that mates with the first rib 710. The extension direction of the third rib 216 is the same as that of the first rib 710, and it is also a straight, raised rib. The first rib 710 and the third rib 216 abut against each other in the front-to-back direction.

[0052] In one embodiment, such as Figure 11 and Figure 12 As shown, there are two first ribs 710, which are symmetrically arranged on the inner wall of the receiving cavity 130. There are also two third ribs 216, which are located on the front and rear sides of the connecting opening 215, respectively, and are arranged in a one-to-one correspondence with the first ribs 710. The two third ribs 216 are located inside the two first ribs 710 and abut against each of the first ribs 710.

[0053] The second rib 720, like the first rib 710, extends along the extending direction of the gripping segment M. Considering that the second rib 720 cooperates with the battery cell 220, for ease of explanation, the following description uses the case of two battery cells 220 as an example. However, based on the above description, the protection scope of this embodiment is not limited thereto. The battery cell 220 is cylindrical, and two side-by-side battery cells 220 have an empty area with an approximately triangular cross-section at their adjacent locations. The aforementioned "empty area" refers to the space not occupied by the battery cell 220. The second rib 720 is located within the aforementioned empty area. Since the second rib 720 is located between two adjacent battery cells 220, it can limit the movement of a pair of battery cells 220.

[0054] The second rib portion 720 includes a first arc-shaped portion 721, a second arc-shaped portion 722, and a connecting portion 723. The connecting portion 723 connects the first arc-shaped portion 721 and the second arc-shaped portion 722. The first arc-shaped portion 721 mates with the circumferential surface of one of the pair of battery cells 220, and the second arc-shaped portion 722 mates with the circumferential surface of the other of the pair of battery cells 220. The first arc-shaped portion 721 and the second arc-shaped portion 722 are distributed back-to-back. The surface of the connecting portion 723 near the battery cell 220 is a smooth curved surface to avoid sharp edges scratching the battery cell 220.

[0055] The first rib 710 and the second rib 720 can be continuously or intermittently distributed along the extending direction of the gripping section M. The first rib 710 and the second rib 720 not only define the position of the battery cell assembly 200 within the receiving cavity 130 in the circumferential direction, but also serve as motion guides during installation. When installing the battery cell assembly 200, since both the first rib 710 and the second rib 720 extend along the extending direction of the gripping section M, after the battery cell assembly 200 enters the receiving cavity 130 through the first opening 111 at the bottom of the gripping section M, it can only be inserted into the receiving cavity 130 in a bottom-to-top direction, thus achieving the motion guide function.

[0056] Furthermore, in this embodiment, the main housing 100, the battery cell assembly 200, and the cover 300 are connected in pairs using connection structures. This pairwise connection enhances the stability and reliability of the connection between the battery cell assembly 200 and the cover 300, preventing the cover 300 from separating from the main housing 100 under external force, thereby preventing the battery cell 220 from falling out of the main housing 100 (for example, when the power tool falls to the ground, the cover 300 may separate from the main housing 100, causing the battery cell 220 to detach or even crack).

[0057] Specifically, such as Figure 5 , Figures 12 to 15As shown, a first connecting structure 400 is provided between the battery cell assembly 200 and the main housing 100; a second connecting structure 500 is provided between the cover 300 and the main housing 100; and a third connecting structure 600 is provided between the battery cell assembly 200 and the cover 300, so that the main housing 100, the battery cell assembly 200, and the cover 300 are connected in pairs. The first connecting structure 400 and the second connecting structure 500 are located inside the main housing 100, while the third connecting structure 600 is partially exposed on the outer wall of the housing formed by the main housing 100 and the cover 300.

[0058] For aesthetic purposes, the outer wall of the housing is provided with a cover (not shown) to conceal the exposed portion of the third connecting structure 600. The cover can be a rigid decorative cover, a rubber cap, or an adhesive with a certain degree of stickiness (sticker). Different cover options can be selected according to the actual use, as long as the user cannot see the exposed portion of the third connecting structure 600 from the outer wall of the housing.

[0059] The first connecting structure 400 is used to limit the cell assembly 200 in the extending direction (vertical direction) of the holding segment M, which is the installation direction of the cell assembly 200. In the installation direction of the cell assembly 200, the first connecting structure 400 is located above the rib structure 700, and the rib structure 700 and the first connecting structure 400 are spaced apart. During installation, the cell assembly 200 is first limited in the front, back, left, and right directions (horizontal / circumferential direction) by the rib structure 700, and then limited in the vertical direction by the first connecting structure 400.

[0060] like Figures 10 to 13 As shown, the first connection structure 400 includes a first snap fastener 410 and a first fastener 420 that cooperates with the first snap fastener 410. One of the first snap fastener 410 and the first fastener 420 is disposed on the mounting base 210, and the other is disposed on the main housing 100. The following description takes the example of the first snap fastener 410 being disposed on the mounting base 210 and the first fastener 420 being disposed on the inner wall of the main housing 100.

[0061] The first fastener 420 includes a first layer plate 421 extending in a horizontal direction (left-right direction) and a second layer plate 422 formed on the first layer plate 421. The second layer plate 422 extends in the mounting direction of the cell assembly 200 and is located above the first layer plate 421. The first layer plate 421 and the second layer plate 422 form an "L" shape structure, and the first buckle 410 is fastened to the second layer plate 422.

[0062] The inner wall of the receiving cavity 130 is also provided with a third layer plate 450, which is distributed at the same height as the first layer plate 421. The first layer plate 421 and the third layer plate 450 are spaced apart in the left-right direction to form a through-hole 460 for the first buckle 410 to pass through along the installation direction of the battery cell assembly 200. In order to facilitate the first buckle 410 to pass through the through-hole 460, a guide surface 423 is provided at the connection between the first layer plate 421 and the second layer plate 422. The guide surface 423 is preferably an inclined straight plane, which can guide the first buckle 410 through the through-hole 460 and engage with the first fastener 420. Of course, the guide surface 423 includes, but is not limited to, an inclined straight plane, and can also be an arc-shaped surface, etc.

[0063] Furthermore, such as Figure 5 , Figure 10 and Figure 15 As shown, the first connecting structure 400 also includes a limiting block 430 and a limiting groove 441, with the limiting block 430 inserted into the limiting groove 441. One of the limiting block 430 and the limiting groove 441 is located on the mounting base 210, and the other is located on the main housing 100. The following description uses the example of the limiting groove 441 being located on the mounting base 210 and the limiting block 430 being located on the main housing 100.

[0064] The limiting groove 441 has a slot, which is opened in a direction perpendicular to the installation direction of the battery cell assembly 200. Preferably, the slot of the limiting groove 441 faces the inner wall of the receiving cavity 130 so that the limiting block 430 located on the inner wall of the receiving cavity 130 can be inserted into the limiting groove 441 through the slot.

[0065] Specifically, the top of the mounting base 210 is provided with a protrusion 440, and the protrusion 440 is provided with a limiting groove 441. The protrusion 440 and the first latch 410 are distributed on opposite sides of the top of the mounting base 210. The length direction of the top surface of the mounting base 210 has more space than the width direction, which is beneficial for the placement of the first latch 410 and the protrusion 440. The above-mentioned "opposite sides" refers to opposite sides of the top surface of the mounting base 210 in the length direction. For example, if the first latch 410 is distributed at one end of the long edge of the top surface of the mounting base 210, then the protrusion 440 is distributed at the other end of the long edge of the top surface of the mounting base 210. Of course, the first latch 410 and the protrusion 440 do not necessarily have to be located at the edge of the top surface of the mounting base 210; they can also be distributed close to other edges.

[0066] The cooperation between the first buckle 410 and the first fastener 420 has basically met the limiting requirements of the cell assembly 200 in the upper and lower directions. However, after adding the cooperation between the limiting block 430 and the limiting groove 441, the force situation of the cell assembly 200 can be optimized to further improve the limiting effect in the upper and lower directions, and vice versa.

[0067] Considering that the mating direction between the limiting block 430 and the limiting groove 441 is perpendicular to the installation direction of the cell assembly 200, in order to facilitate the mating between the limiting block 430 and the limiting groove 441, the main housing 100 is separately set in a direction perpendicular to the installation direction of the cell assembly 200.

[0068] like Figure 6 As shown, the main housing 100 includes a first housing 110 and a second housing 120. The first opening 111 is independently formed on the first housing 110. The front end N1 of the fuselage section N is independently located on the first housing 110, and the rear end N2 of the fuselage section N is independently located on the second housing 120. That is, the first opening 111, the front end N1, and the rear end N2 are not formed by the first housing 110 and the second housing 120 enclosing each other. This can effectively avoid the influence of processing errors and installation errors of the first housing 110 and the second housing 120. For example, when installing the cover 300, since the first opening 111 is not enclosed, it will not be affected by the quality of the enclosure, which is more conducive to installing the cover 300 at the first opening 111.

[0069] When installing the battery cell assembly 200, the battery cell assembly 200 is first installed into the first housing 110 from bottom to top, and the first buckle 410 and the first fastener 420 are fastened together; then the second housing 120 is aligned with the first housing 110, and the limiting block 430 is inserted into the limiting groove 441, so that the battery cell assembly 200 is stably fixed in the vertical direction and the force is balanced.

[0070] The first housing 110 and the second housing 120 are detachably connected. After the first housing 110 and the second housing 120 are detachably connected, they can also be welded together. Of course, the first housing 110 and the second housing 120 can also be connected by other methods such as bolt connection and snap-fit ​​connection, including but not limited to the methods mentioned above.

[0071] The battery cell assembly 200 and the cover 300 are installed in the same direction, from bottom to top. During installation, the worker does not need to change the position and posture of the main housing 100 and can continuously complete the installation of the battery cell assembly 200 and the cover 300, which effectively improves the installation efficiency and saves time and effort.

[0072] like Figure 3As shown, the second connection structure 500 includes a second snap fastener 510 disposed on the cover 300 and a second snap groove 520 disposed on the inner wall of the main housing 100 for engaging with the second snap fastener 510. At least one pair of second snap fasteners 510 are provided, and the at least one pair of second snap fasteners 510 are evenly distributed circumferentially on the cover 300, with each second snap fastener 510 corresponding to a second snap groove 520. During installation, the second snap fasteners 510 and second snap grooves 520 are aligned, and then the cover 300 is placed over the first opening 111 from bottom to top to close the first opening 111, thereby enclosing the battery cell assembly 200 within the receiving cavity 130. After the cover 300 is placed over the first opening 111, the cover 300 abuts against the bottom of the mounting base 210 of the battery cell assembly 200.

[0073] like Figures 2 to 4 As shown, the third connection structure 600 includes a fastener 610. The cover 300 is connected to the cell assembly 200 via the fastener 610, wherein the installation direction of the fastener 600 is consistent with the installation direction of the cover 300. The fastener 600 is preferably a screw, and the bottom of the mounting base 210 has a threaded hole 620 that mates with the fastener 600. The fastener 600 penetrates the cover 300 along its installation direction to thread into the mounting base 210 of the cell assembly 200. As can be seen from the above, the second connection structure 500 and the third connection structure 600 operate in the same direction, both achieving vertical connection.

[0074] In this embodiment, the second connecting structure 500 and the third connecting structure 600 at the cover 300 enable a dual connection of the cover 300. The second connecting structure 500 can be considered as a preliminary connection, and the third connecting structure 600 can be considered as a reinforcing connection. The threaded connection of the third connecting structure 600 ensures that the cover 300 will not easily detach from the first opening 111, thereby ensuring an effective connection between the battery cell assembly 200, the cover 300, and the main housing 100. Only after the connection of the third connecting structure 600 is released can the connection between the second connecting structure 500 and the main housing 100 be released, and finally, the connection between the first connecting structure 400 and the main housing 100 can be released.

[0075] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the protection scope of this utility model.

Claims

1. A power tool, characterized in that, include: The main shell has a first opening formed on its outer wall; The battery cell assembly is disposed within the main housing through the first opening; A cover is provided at the first opening and is operable to open or close the first opening; The battery cell assembly is provided with a first connection structure between itself and the main housing, the cover is provided with a second connection structure between itself and the main housing, and the battery cell assembly is provided with a third connection structure between itself and the cover, so that the main housing, the battery cell assembly and the cover are connected in pairs.

2. The power tool as described in claim 1, characterized in that, The battery cell assembly is installed in the same direction as the cover.

3. The power tool as described in claim 1, characterized in that, The second connection structure and the third connection structure operate in the same direction.

4. The power tool as described in claim 1, characterized in that, The battery cell assembly includes a mounting base located within the main housing and a battery cell disposed on the mounting base; the first connection structure includes a first snap fastener and a first fastener cooperating with the first snap fastener, wherein one of the first snap fastener and the first fastener is disposed on the mounting base and the other is disposed on the main housing, and / or, the first connection structure includes a limiting block and a limiting groove, wherein the limiting block is inserted into the limiting groove, wherein one of the limiting block and the limiting groove is disposed on the mounting base and the other is disposed on the main housing.

5. The power tool as described in claim 4, characterized in that, The mating direction between the limiting block and the limiting groove is perpendicular to the installation direction of the battery cell assembly, and the main housing is separately arranged in a direction perpendicular to the installation direction of the battery cell assembly.

6. The power tool as claimed in claim 1, characterized in that, The second connection structure includes a second buckle on the cover and a second buckle groove on the inner wall of the main housing for engaging with the second buckle.

7. The power tool as claimed in claim 1, characterized in that, The third connection structure includes a fastener, through which the cover is connected to the battery cell assembly, wherein the fastener and the battery cell assembly are threaded together.

8. The power tool as claimed in claim 1, characterized in that, The first connecting structure and the second connecting structure are located inside the main housing, and the third connecting structure is partially exposed on the outer wall of the housing formed by the main housing and the cover.

9. The power tool as claimed in claim 8, characterized in that, The outer wall of the housing is provided with a shielding member for covering the exposed part of the third connecting structure.

10. The power tool as claimed in claim 1, characterized in that, The main housing has a receiving cavity for accommodating the battery cell assembly. The inner wall of the receiving cavity is provided with a rib structure. The rib structure is configured to define the position of the battery cell assembly in the receiving cavity in the circumferential direction. In the mounting direction of the battery cell assembly, the rib structure is spaced apart from the first connecting structure.

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