Housing structure and power tool

Abstract

The utility model discloses a casing structure and electric tool, casing structure is applied to electric tool, and casing structure includes casing and handle, the casing has opposite first end and second end in its axial direction, and the position of casing near first end is used to install work head, and the air duct is formed in the casing, and the air duct is provided with the air inlet and the air outlet that communicate, and the air outlet is close to first end setting, and the air inlet is close to second end setting, handle is located in the casing, and handle has first holding part, and first holding part is close to second end setting, and forms holding gap between with casing, wherein, the air inlet is located in the side outer wall of casing towards first holding part, when electric tool water operation, the air inlet is away from the position of waiting for processing, thereby can avoid the stagnant water from the air inlet into the casing, and further guarantee the electric element on the power device in the casing normal work, avoid electric tool and damage because of internal waterlogging.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a housing structure and a power tool. Background Technology

[0002] Power tools typically consist of a housing, a motor assembly housed within the housing, and a working head driven by the motor assembly. Taking a grooving machine as an example, the output end of the motor assembly is fitted with a cutting disc or other tool head. When the tool head is driven to rotate by the motor assembly, it can perform operations such as grooving and grinding. The grooving machine's housing has a handle for the user to grip, and an internal cooling channel is formed within the housing, with air inlets and outlets connected to this channel. The air inlet is usually located on the side wall of the housing. Because grooving machines operate in wet conditions, a large amount of water will accumulate on the ground during grooving or grinding operations. This water will enter the housing through the air inlet, affecting the normal operation of electrical components and potentially damaging the machine. Utility Model Content

[0003] The main purpose of this utility model is to propose a housing structure and power tool, which aims to solve the problem that when existing power tools are used in wet conditions, water from the ground enters the interior of the housing through the air inlet on the periphery of the housing, thereby affecting the normal operation of electrical components.

[0004] To achieve the above objectives, this utility model proposes a shell structure, comprising:

[0005] The housing has a first end and a second end opposite to each other in its axial direction. The housing is used to install the working head at the position near the first end. An air duct is formed inside the housing, and an air inlet and an air outlet communicating with the air duct are provided thereon. The air outlet is located near the first end, and the air inlet is located near the second end.

[0006] A handle is provided on the housing. The handle has a first grip portion, which is disposed near the second end and forms a grip gap with the housing.

[0007] The air inlet is located on the outer wall of the housing facing the first grip portion.

[0008] Preferably, a plurality of grooves are provided on the outer wall of the housing facing the first grip portion, the plurality of grooves are arranged side by side and spaced apart in the axial direction of the housing, and at least one groove wall of the groove is provided with a vent hole communicating with the air duct;

[0009] The air inlet includes a plurality of air holes.

[0010] Preferably, the air vent is located on both sides of the groove along the axial direction of the housing; or, the air vent is located on the groove wall near the first end.

[0011] Preferably, the power tool includes a heating element disposed within the air duct;

[0012] The outer wall of the housing is bent at a partial location towards the first grip portion to form a folded structure with connected edges. The heating element is located close to the folded structure, and the air inlets are respectively located on the two side walls adjacent to the folded structure, so as to face the two side sides adjacent to the heating element respectively.

[0013] Preferably, the extension path of the first grip portion is adapted to the bending direction of the angled structure so that the width of the grip gap is approximately uniform in its extension direction.

[0014] Preferably, the handle further includes a second grip portion disposed at the second end and extending axially along the housing, wherein the end of the first grip portion away from the first end is connected to the second grip portion.

[0015] Preferably, the extension axis of the second grip, the extension axis of the first grip, and the motor axis of the power tool are coplanar.

[0016] Preferably, it further includes a connecting post, which is arranged radially along the housing, with one end of the connecting post connected to the housing and located on the side of the air inlet near the first end; and the second end of the connecting post connected to the portion of the first grip near the first end.

[0017] Preferably, the handle further includes a third grip portion, which is disposed near the first end. The third grip portion extends radially along the housing, and the extension axis of the third grip portion, the extension axis of the first grip portion, and the motor axis of the power tool are coplanar.

[0018] This utility model also proposes an electric tool, comprising:

[0019] The aforementioned shell structure;

[0020] The working head is located in the housing of the aforementioned housing structure and is positioned near the first end;

[0021] The circuit board assembly is disposed within the housing of the housing structure and near the second end; and,

[0022] A motor assembly is disposed within the housing of the housing structure and located between the working head and the circuit board assembly. The motor assembly is electrically connected to the circuit board assembly, and its output terminal drives the working head.

[0023] The technical solution provided by this utility model has at least the following advantages:

[0024] The housing structure provided by this utility model includes a housing and a handle. The housing has a first end and a second end opposite to each other in its axial direction. The working head is installed near the first end of the housing. An air duct is formed inside the housing. An air outlet and an air inlet are respectively provided near the first end and the second end of the housing. Cold air enters the air duct from the air inlet, cools the power unit inside the housing, and then flows out from the air outlet, thereby achieving air cooling of the power unit. Furthermore, for the convenience of user operation, a handle is usually provided on the housing. The handle has a first gripping part for the user to hold, and a gripping gap is formed between the first gripping part and the housing to accommodate the hand. Meanwhile, by placing the air inlet on the outer wall of the housing facing the first grip, the air inlet is positioned to correspond to the grip gap. During operation, the user holds the first grip and uses the working head to perform work. In this way, the air inlet corresponding to the grip gap can be relatively far away from the work area. Especially when the power tool is operating with water, the air inlet is far away from the work area, which can prevent water from entering the housing from the air inlet. This ensures the normal operation of the electrical components on the power unit inside the housing and prevents the power tool from being damaged by water entering from inside. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an embodiment of the shell structure provided by this utility model;

[0027] Figure 2 for Figure 1 The exploded view of the shell structure with respect to the rear shell is shown below.

[0028] Figure 3 for Figure 2 A schematic diagram of the rear shell with respect to the groove (first view);

[0029] Figure 4 for Figure 2 A schematic diagram of the rear shell with respect to the groove (second view);

[0030] Figure 5 for Figure 2 A schematic diagram of the rear shell with respect to the groove;

[0031] Figure 6 This is a structural schematic diagram of an embodiment of a power tool (with a hidden partial housing) provided by this utility model.

[0032] Explanation of icon numbers:

[0033] 1000 Power tool; 100 Housing structure; 1 Housing; A Head housing; B Main housing; C Rear housing; 11 First end; 12 Second end; 13 Air duct; 14 Air inlet; 15 Air outlet; 16 Groove; 161 Groove wall; 162 Air hole; 17 Folded structure; 171 Side wall; 18 Half housing; 2 Handle; a Grip gap; 21 First grip section; 211 First grip segment; 212 Second grip segment; 213 Bending connection segment; 22 Second grip section; 23 Connecting post; 24 Third grip section; 200 Circuit board assembly; 300 Motor assembly; F1 Axial; F2 Radial.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] Power tools are a type of electrical equipment widely used in construction, decoration, manufacturing, and repair. Taking a grooving machine as an example, the output end of the motor assembly of the grooving machine is equipped with a cutting disc or other tool head. When the tool head is driven to rotate by the motor assembly, it can perform operations such as grooving and grinding. The grooving machine has a handle on its casing for the user to hold; and in order to dissipate heat and cool the internal power unit during the operation of the grooving machine, a cooling channel is usually formed inside the casing, and the casing has an air inlet and an air outlet connected to the cooling channel.

[0039] This application improves the housing structure 100 of the power tool 1000. The housing structure 100 will be described in detail below with reference to the accompanying drawings.

[0040] Please see Figure 1 and Figure 2 The housing structure 100 is applied to the power tool 1000 and includes a housing 1. The housing 1 includes a head housing A, a main housing B, and a rear housing C connected in sequence. The housing 1 has a first end 11 and a second end 12 opposite to each other in its axial direction F1. The first end 11 is configured as the end of the head housing A facing away from the main housing B, and the second end 12 is configured as the end of the rear housing C facing away from the main housing B. An air duct 13 is formed inside the housing 1, and an air inlet and an air outlet connected to the air duct 13 are provided thereon. The air outlet is located near the first end 11, and the air inlet is located near the second end 12.

[0041] Head housing A is used to mount the working head. Taking a grooving machine as an example, the working head can be set as a saw blade, grinding disc, etc. The working head is rotatably mounted on head housing A, and the axis of rotation of the working head is set along the radial direction F2 of the main housing B.

[0042] The main housing B has two ends along its axial direction F1, one of which is connected to the head housing A. The main housing B is used to house the motor assembly 300. The main housing B and the head housing A are internally connected. The motor of the motor assembly 300 is configured as a brushed motor or a brushless motor. The axis of the motor output shaft is aligned with the axial direction F1 of the main housing B, and the motor output shaft extends into the head housing A. Since the axial direction F1 of the motor output shaft intersects with the rotation axis of the working head, a transmission assembly is usually provided to drive the connection between the motor output shaft and the working head. An air outlet 15 is usually provided on the main housing B, located near the connection between the main housing B and the head housing A. It should be noted that the air outlet 15 is only an example; the air outlet of the power tool 1000 may also include other air outlets provided on the head housing A and the main housing B. Since the position and shape of the air outlets are irrelevant to the inventive point of this application, they will not be described in detail.

[0043] The main housing B has two ends along its axial direction F1, with the other end connected to the rear housing C, which houses the circuit board assembly 200. The rear housing C is internally connected to the main housing B, and an air inlet 14 is provided on the side of the rear housing C away from the main housing B and near its end. An air duct 13 is formed between the main housing B and the motor assembly 300, and between the rear housing C and the circuit board assembly 200. During the operation of the power tool 1000, cold air enters the air duct 13 from the air inlet 14, sequentially cooling the circuit board assembly 200 and the motor assembly 300, and then flows out from the air outlet 15, thereby achieving air cooling of the motor assembly 300 and the circuit board assembly 200.

[0044] To facilitate user operation, a handle 2 is usually provided on the housing 1. The handle 2 has a first grip portion 21 for the user to hold, and a grip gap a is formed between the first grip portion 21 and the housing 1 to accommodate the hand.

[0045] In this embodiment, the air inlet 14 is located on the outer wall of the housing 1 facing the first grip 21. This arrangement ensures that the air inlet 14 corresponds to the grip gap a. During operation, the user grips the first grip 21 and uses the working head to perform work. The air inlet 14 corresponding to the grip gap a is relatively far away from the work area. Especially when the power tool 1000 is operating with water, the air inlet 14 is far away from the work area (e.g., a wet ground), thus preventing water from entering the housing 1 from the air inlet 14. This ensures the normal operation of the electrical components on the power unit inside the housing 1 and prevents the power tool 1000 from being damaged by internal water ingress.

[0046] Please see Figure 2 In this embodiment, the shell structure 100 is formed by splicing two half-shells 18. The air inlets 14 are symmetrically arranged on the two half-shells 18, that is, the center line of the air inlets 14 is the intersection line of the two half-shells.

[0047] Understandably, during the operation of a grooving machine, the high-speed rotating working head cuts the workpiece, typically generating a significant amount of debris and dust. In related technologies, a through hole is usually directly drilled along its radial direction F2 on the outer wall of the machine casing, penetrating the casing and connecting to the ventilation duct. This allows scattered debris to easily enter the ventilation duct through the through hole, thus affecting the normal operation of the grooving machine.

[0048] In one embodiment, please refer to Figures 3 to 5 The outer wall of the housing 1 facing the first grip 21 is provided with a plurality of grooves 16, which are arranged side by side at intervals along the axial direction F1 of the housing 1. At least one groove wall 161 of the groove 16 is provided with a vent 162 connecting to the ventilation duct 13; wherein, the air inlet 14 includes a plurality of vent 162.

[0049] In this embodiment, multiple grooves 16 are provided on the housing 1. At least one groove wall 161 of the groove 16 is provided with a vent 162 connecting to the ventilation duct 13. The vent 162 on the multiple grooves 16 form an air inlet 14, and the cool airflow can enter the flow channel through the multiple vent 162 to achieve cooling. At the same time, since the vent 162 is located on the groove wall 161 of the groove 16, compared with the air inlet which is a through hole that directly penetrates the housing, it can better prevent dust and debris from entering the air duct 13, thereby ensuring that the operation of the grooving machine is not affected.

[0050] In one application scenario, the grooving machine does not use coolant (such as water) during operation. In this scenario, the air vents 162 can be located on both sides of the groove 16 on the axial direction F1 of the housing 1. This increases the air intake area and the flow rate of the cold air, thereby improving the air cooling effect.

[0051] In another application scenario, the grooving machine operates with water. The high-speed rotating working head will carry up mud and water, which moves towards the second end 12. During operation, the grooving wall 161 near the second end 12 is directly opposite the thrown mud and water. If an air vent 162 is provided on this side of the grooving wall 161, the mud and water can easily enter the air duct 13 through the air vent 162. Conversely, the grooving wall 161 near the first end 11 is opposite to the thrown mud and water. For this application scenario, please refer to [link / reference needed]. Figure 3 and Figure 4 The groove wall 161 on the side of the groove 16 near the second end 12 is sealed. The groove wall 161 near the first end 11 is provided with air holes 162. In this way, cold air can be guaranteed to enter the air duct 13, and mud and water can be prevented from entering the air duct 13, thereby ensuring that the operation of the grooving machine is not affected.

[0052] In one embodiment, please refer to Figure 1 and Figure 5The power tool 1000 includes a heating element disposed in an air duct 13; the outer wall of the housing 1 facing the first grip 21 is partially bent to form a folded structure 17 with connected edges, the heating element is disposed close to the folded structure 17, and air inlets 14 are respectively disposed on the two adjacent side walls 171 of the folded structure 17 to face the two adjacent side walls of the heating element.

[0053] It is understood that the heating element refers to the aforementioned circuit board assembly 200. That is, in order to increase the air intake volume and the overlap area between the air intake 162 and the heating element, in this embodiment, the outer wall of the housing 1 is partially bent to form an angled structure 17. The heating element is arranged corresponding to the angled structure 17. By setting the air intake 14 on the two adjacent side walls 171 of the angled structure 17, so that the air intake 14 faces the two adjacent sides of the heating element, not only can the overlap area between the air intake 14 and the heating element be increased, but the cooling airflow through the air intake 14 can also cool the two sides of the heating element at the same time, thereby improving the air cooling effect.

[0054] Following on from "At least one groove wall 161 of the groove 16 is provided with a vent 162 for connecting the ventilation duct 13", please refer to [link to previous text]. Figure 1 and Figure 2 The outer wall of the casing 1 is bent in a certain position to form a bend structure 17. Corresponding to the bend structure 17, the outer wall of the casing 1 has an inclined step surface facing the second end 12. The air inlet 14 is located on the inclined step surface. Therefore, when the grooving machine is operating with water, the inclined step surface is opposite to the mud and water that is thrown up. Therefore, the air inlet 14 on the inclined step surface is not easy to enter the mud and water.

[0055] Therefore, in this preferred embodiment, at the non-inclined step surface of the outer wall of the housing 1, the air hole 162 is provided on the groove wall 161 of the groove 16 near the first end 11; at the inclined step surface, the air hole 162 is provided on both sides of the groove wall 161 of the groove 16 on the axial direction F1 of the housing 1. In this way, while ensuring that mud and water do not enter the air duct 13, the air intake area can be increased, the airflow can be increased, and the air cooling effect can be improved.

[0056] Because the outer wall of the casing 1 is bent in some areas, in order to facilitate user operation of the grooving machine, in one embodiment, please refer to... Figure 1 and Figure 2 The extension path of the first gripping part 21 is adapted to the bending direction of the angled structure 17 so that the gripping gap a is approximately uniform in width at various points along its extension direction.

[0057] Specifically, the first gripping part 21 includes a first gripping section 211, a second gripping section 212, and a curved connecting section 213. The first gripping section 211 and the second gripping section 212 are respectively arranged approximately parallel to the two adjacent side walls 171 on the angled structure 17. That is, the first gripping section 211 is arranged along the axial direction F1 of the housing 1, the second gripping section 212 is arranged parallel to the inclined step surface, and the curved connecting section 213 connects the first gripping section 211 and the second gripping section 212 respectively.

[0058] The handle 2 also includes a second grip portion 22, which is located at the second end 12 of the housing and extends along the axial direction F1 of the housing 1. The end of the first grip portion 21 away from the first end of the housing is connected to the second grip portion 22. That is, the axially extending second grip portion 22 is provided on the end of the rear housing C; the end of the second grip section 212 of the first grip portion 21 away from the first end of the housing is connected to the second grip portion 22. In other words, a one-end closed grip gap a is formed between the first grip portion 21, the rear housing C, and the second grip portion 22.

[0059] In this way, not only can users have more grip options, allowing them to choose different grip positions and slots at different angles; but also, the second grip part 22 is connected to the first grip part 21, which can close the grip gap a on the side near the second end 12, serving as a dust barrier to prevent dust and debris from entering the air inlet 14.

[0060] In this preferred embodiment, the extension axis of the second grip 22, the extension axis of the first grip 21, and the motor axis of the power tool 1000 are arranged coplanarly. Since the motor has a large mass, the center of gravity of the power tool is usually close to the motor axis. Having the extension axis of the grip portion coplanar with the motor axis makes gripping easier and facilitates the operator applying pushing force along the axial direction. Furthermore, the direction of the applied force is consistent with the direction of tool movement, resulting in direct force transmission, reduced offset errors, and ensured straightness of the grooving.

[0061] In one embodiment, please refer to Figure 1 and Figure 2 The housing structure of the power tool also includes a connecting post 23, which is arranged along the radial direction F2 of the housing. One end of the connecting post 23 is connected to the housing and is located on the side of the air inlet 14 near the first end 11. The other end of the connecting post 23 is connected to the part of the first grip 21 near the first end 11 of the housing.

[0062] Specifically, a connecting post 23 is provided on the housing 1 along its radial direction F2, and the end of the first grip section 211 near the first end of the housing is connected to the connecting post 23; following the previous statement that "the end of the second grip section 212 away from the first end of the housing is connected to the second grip part 22", that is, the housing 1, the connecting post 23, the first grip part 21 and the second grip part 22 enclose a closed grip gap a, defining a grip area on the housing 1 for easy operation by the user; at the same time, the connecting post 23, the first grip part 21 and the second grip part 22 can block the air inlet 14, reducing the probability of dust and debris entering the air inlet 14.

[0063] The above describes a user applying force along the axis of the housing 1 to create a grooving mechanism by gripping the first gripping part 21 or the second gripping part 22. To provide a more stable grip and operation for the user, in one embodiment, please refer to... Figure 1 and Figure 2 The handle 2 also includes a third grip 24, which is disposed near the first end 11 and extends radially F2 along the housing 1. During operation, the user can hold the third grip 24 with one hand and the first grip 21 or the second grip 22 with the other hand, which allows for more stable operation of the grooving machine.

[0064] The extension axis of the third grip 24, the extension axis of the first grip 21 or the second grip, and the output axis of the motor of the power tool 1000 are arranged in a coplanar manner, which makes the operation more dynamic and makes it easier for the operator to apply pushing force along the axis direction, so that the direction of the force is consistent with the direction of the tool movement, the operating force is directly transmitted, the offset error is reduced, and the straightness of the grooving is ensured.

[0065] In this embodiment, the extension axis of the third gripping part 24 is perpendicular to the rotation axis of the working head, so it will not affect the normal operation of the working head. The extension axis of the third gripping part 24 is parallel to the extension axis of the connecting post 23, making the layout of the entire housing structure more regular and stable.

[0066] This utility model also provides an electric tool 1000, please refer to [link / reference]. Figure 6 The power tool 1000 includes a housing structure 100, a working head (not shown in the figure), a circuit board assembly 200, and a motor assembly 300. The working head is disposed in the head shell A of the housing structure 100 and is located near the first end 11. The circuit board assembly 200 is disposed in the rear shell C of the housing structure 100 and is located near the second end 12. The motor assembly 300 is disposed in the main shell B of the housing structure 100 and is located between the working head and the circuit board assembly 200. The motor assembly 300 is electrically connected to the circuit board assembly 200, and its output end drives the working head.

[0067] It should be noted that the housing structure is set as the housing structure 100 described above, which includes all the technical features of the housing structure 100. Therefore, the power tool 1000 also includes all the technical features of the housing structure 100 described above, and thus has the technical effects brought about by all the technical features described above.

[0068] Typically, an air outlet 15 is provided on the main housing B, near the connection between the main housing B and the head housing A. An air inlet 14 is provided on the rear housing C on the side away from the main housing B and near its end. A connecting air duct 13 is formed between the main housing B and the motor assembly 300, and between the rear housing C and the circuit board assembly 200. During the operation of the power tool 1000, the cold air enters the air duct 13 from the air inlet 14, sequentially cooling the circuit board assembly 200 and the motor assembly 300, and then flows out from the air outlet 15, thereby achieving air cooling of the motor assembly 300 and the circuit board assembly 200.

[0069] By setting the air inlet 14 on the outer wall of the housing 1 facing the first grip 21, the air inlet 14 is set to correspond to the grip gap a. During operation, the air inlet 14 corresponding to the grip gap a can be relatively far away from the processing position. Especially when the power tool 1000 is operating with water, the air inlet 14 is far away from the processing position (e.g., a waterlogged ground), thereby preventing water from entering the housing 1 from the air inlet 14. This ensures that the electrical components on the power unit inside the housing 1 work normally and prevents the power tool 1000 from being damaged by water entering from inside.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A housing structure for use in power tools, characterized in that, include: The housing has a first end and a second end opposite to each other in its axial direction. The housing is used to install the working head at the position near the first end. An air duct is formed inside the housing, and an air inlet and an air outlet communicating with the air duct are provided thereon. The air outlet is located near the first end, and the air inlet is located near the second end. A handle is provided on the housing. The handle has a first grip portion, which is disposed near the second end and forms a grip gap with the housing. The air inlet is located on the outer wall of the housing facing the first grip portion.

2. The shell structure according to claim 1, characterized in that, The outer wall of the housing facing the first grip portion is provided with a plurality of grooves, the plurality of grooves are arranged side by side and spaced apart in the axial direction of the housing, and at least one groove wall of the groove is provided with a vent hole communicating with the air duct. The air inlet includes multiple air holes.

3. The shell structure according to claim 2, characterized in that, The air vents are located on the two sides of the groove along the axial direction of the housing; or, the air vents are located on the groove wall near the first end.

4. The shell structure according to claim 1, characterized in that, The power tool includes a heating element disposed within the air duct; The outer wall of the housing is bent at a partial location towards the first grip portion to form a folded structure with connected edges. The heating element is located close to the folded structure, and the air inlets are respectively located on the two side walls adjacent to the folded structure, so as to face the two side sides adjacent to the heating element respectively.

5. The shell structure according to claim 4, characterized in that, The extension path of the first grip portion is adapted to the bending direction of the angled structure so that the width of the grip gap is approximately uniform throughout its extension direction.

6. The shell structure according to claim 5, characterized in that, The handle also includes a second grip portion, which is disposed at the second end and extends axially along the housing, and the end of the first grip portion away from the first end is connected to the second grip portion.

7. The shell structure according to claim 6, characterized in that, The extension axis of the second grip, the extension axis of the first grip, and the motor axis of the power tool are arranged in the same plane.

8. The shell structure according to claim 1, characterized in that, It also includes a connecting post, which is arranged radially along the housing. One end of the connecting post is connected to the housing and is located on the side of the air inlet near the first end. The second end of the connecting post is connected to the portion of the first grip near the first end.

9. The shell structure according to claim 1, characterized in that, The handle also includes a third grip portion, which is disposed near the first end. The third grip portion extends radially along the housing, and the extension axis of the third grip portion, the extension axis of the first grip portion, and the motor axis of the power tool are coplanar.

10. A power tool, characterized in that, include: The shell structure as described in any one of claims 1-9; The working head is located in the housing of the aforementioned housing structure and is positioned near the first end; The circuit board assembly is disposed inside the housing of the housing structure and is located near the second end; as well as, A motor assembly is disposed within the housing of the housing structure and located between the working head and the circuit board assembly. The motor assembly is electrically connected to the circuit board assembly, and its output terminal drives the working head.

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