Backpack frame and backpack blower

Abstract

The present invention relates to a back frame and a backpack blower. The frame body includes a support member close to the side where a person carries it. When observing from the back side of the support member, the support member includes a central support part and an edge support part. The central axis of the central support part and the edge line of the edge support part respectively form a first virtual plane and a second virtual plane. The first virtual plane and the second virtual plane respectively extend obliquely outward from the center to form an open cavity that is recessed inward on the back side of the support member. When observing from the side opposite to the back side of the support member, the support member includes: an operation component installation part, which is adapted to install and connect an operation component, and the operation component at least includes a driving motor; the central support part and the edge support part that are spaced apart form multi-segmented supports at intervals on the back of the operation component installation part. The back frame has high structural strength.

Description

Technical Field

[0001] The present invention relates to the field of garden blowers, and particularly to a back frame and a backpack blower. Background Art

[0002] Compared with engine-powered tools, electric tools are more environmentally friendly and thus are widely used. To facilitate the user to carry, a backpack blower is mostly used at present. The user carries the equipment on the body, and the body bears the weight of the equipment, reducing the force on the hand and alleviating the user's fatigue.

[0003] However, the backpack blower generally has a high temperature during the battery pack discharge process due to its large power and high current, and the overall structure of the back frame needs to be strengthened. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a back frame with high structural strength.

[0005] In view of this, a back frame provided by the present application includes a frame body, wherein:

[0006] The frame body includes a support member close to the side where the user carries on the back;

[0007] Viewed from the back side of the support member, the support member includes:

[0008] A central support portion and edge support portions spaced apart from and on both sides of the central support portion;

[0009] The central axis of the central support portion and the edge lines of the edge support portions respectively form a first virtual plane and a second virtual plane, and the first virtual plane and the second virtual plane respectively extend obliquely outward from the center to form an open cavity that is recessed inward on the back side of the support member;

[0010] Viewed from the side opposite to the back side of the support member, the support member includes:

[0011] An operation component installation portion adapted to install and connect an operation component, and the operation component includes at least one drive motor;

[0012] The spaced-apart central support portion and the edge support portions form spaced multi-segment supports on the back side of the operation component installation portion.

[0013] Further, viewed from the back side of the support member, a partial spaced area between the central support portion and the edge support portions on both sides thereof is lower than its adjacent portions, forming a relatively low-lying structure, so as to form an alternating convex and concave shape on the back side of the operation component installation portion.

[0014] Furthermore, the central support portion extends downward to be connected to the bottom of the frame body, and is connected to the edge support portion by the laterally extending bottom to form a "Ш" shape on the back side of the working component mounting portion.

[0015] Furthermore, the central support portion, the edge support portion and the bottom are integrally formed.

[0016] Furthermore, the central support portion and the edge support portions spaced apart from each other are correspondingly supported at the front, middle and rear positions of the working component mounting portion.

[0017] Furthermore, the side of the edge supporting portion facing the back surface is inclined from outside to inside.

[0018] Furthermore, a groove is provided on the side of at least one edge supporting portion facing the back negative side, so as to form an alternating convex and concave shape on the side of the edge supporting portion facing the back negative side.

[0019] Compared with the prior art, the beneficial technical effects of this application are:

[0020] In the present application, a central support portion and an edge support portion are provided on the support member close to the side on which the person is carrying the load, and an open cavity that is recessed inwardly is formed on the back side of the support member, that is, it can be understood that the edge support portion protrudes outwardly and the central support portion is recessed, and the central support portion is at least partially located on the inner side of the plane formed by the outer edge of the edge support portion, forming a similar embracing design that caters to the curve of the human back. On the one hand, the person is more comfortable when carrying the load on his back. At the same time, on the other hand, the central support portion and the edge support portion spaced apart from each other form a spaced multi-segment support on the back side of the working component installation portion, which strengthens the structure of the support member.

[0021] A second object of the present invention is to provide a backpack frame that can dissipate heat for a battery pack.

[0022] In view of this, the present application provides a backpack frame, comprising a frame body, wherein:

[0023] The frame body includes a support member close to the side carried by the person;

[0024] When viewed from the back side of the support member, the support member comprises:

[0025] heat dissipation vents; and,

[0026] A central support portion and edge support portions located on both sides of the central support portion;

[0027] The central axis of the central support part and the edge line of the edge support part respectively form a first virtual plane and a second virtual plane, and the first virtual plane and the second virtual plane respectively extend obliquely outward from the center to form an open cavity that is recessed inward on the back negative side of the support member;

[0028] The open cavity communicates with the heat dissipation port;

[0029] Viewed from the side opposite to the back negative side of the support member, the support member includes:

[0030] A battery installation part, which is suitable for installing and connecting a battery pack;

[0031] The heat dissipation port is suitable for facing and remaining in communication with the heat dissipation surface of the battery pack provided with a ventilation port.

[0032] Further, viewed from the back negative side of the support member, a plurality of wedge-shaped parts are respectively provided between the central support part and the edge support parts on both sides thereof, and the heat dissipation port is arranged on the bottom surface of the wedge-shaped part so as to be covered and blocked by the upper inclined surface of the wedge-shaped part.

[0033] Further, one end of the wedge-shaped part in the transverse direction extends to be connected to the edge support part, and the other end extends to be close to the central support part and is in an open shape so as to communicate with the central area of the open cavity.

[0034] Further, a diversion channel is formed between the upper inclined surface of the wedge-shaped part and the bottom surface of another adjacent wedge-shaped part, and the diversion channel communicates with the heat dissipation port.

[0035] Further, the back negative side of the support member is suitable for connecting a back strap assembly, and the back strap assembly includes a connecting part and a back strap. The connecting part is connected to the back negative side of the support member and forms an air flow chamber in combination with the open cavity.

[0036] Further, the connecting part is made of a porous and breathable fabric.

[0037] Compared with the prior art, the beneficial technical effects of the present application are as follows:

[0038] In the present application, a similar embracing design is also formed on the side close to the person's back, which caters to the curve of the human back. On the one hand, the person is more comfortable when carrying the device on his back. At the same time, on the other hand, a heat dissipation port is provided, which is opposite to and connected with the heat dissipation surface of the battery pack with a vent, which helps to dissipate heat from the battery pack. Especially when used in a backpack blower, the backpack blower generates high-speed airflow during operation. By providing an air cooling channel connected to the main operating air duct, negative pressure can be formed in the air cooling channel, and the heat dissipation port connected thereto forms an air inlet, which can introduce external airflow into the battery pack through the heat dissipation port and introduce it into the main operating air duct through the air cooling channel, thereby further enhancing the heat dissipation effect of the battery pack.

[0039] Another backpack frame provided by the present application includes a frame body, wherein:

[0040] The frame body includes a support member close to the side carried by the person;

[0041] When viewed from the back side of the support member, the support member comprises:

[0042] A central support portion and edge support portions spaced apart from each other on both sides of the central support portion;

[0043] The central axis of the central support portion and the edge line of the edge support portion respectively form a first virtual plane and a second virtual plane, and the first virtual plane and the second virtual plane respectively extend obliquely outward from the center to form an open cavity that is concave inward on the back side of the support member;

[0044] The support member, viewed from a side opposite to a back surface of the support member, comprises:

[0045] An operating component mounting portion, which is suitable for mounting and connecting an operating component, wherein the operating component includes at least one driving motor;

[0046] A battery mounting portion, which is suitable for detachably mounting and connecting a battery pack, wherein the battery pack is suitable for providing power to the driving motor;

[0047] The battery mounting portion is located above the operating component mounting portion.

[0048] Furthermore, the central support portion and the edge support portion spaced apart from each other form spaced multi-stage supports on the back side of the working component mounting portion.

[0049] Furthermore, the support member also includes a heat dissipation port;

[0050] The heat dissipation port is adapted to be opposite to and connected with the heat dissipation surface of the battery pack provided with a vent, and is also connected with the open cavity.

[0051] Compared with the prior art, the beneficial technical effects of this application are:

[0052] In the present application, a similar embracing design is also formed on the side close to the person's back, which caters to the curve of the human back. On the one hand, the person is more comfortable when carrying the device on his back. On the other hand, the battery installation part is located above the working component installation part to facilitate the person to disassemble and install the battery pack.

[0053] In addition, the present application also provides a backpack blower, which includes:

[0054] The carrying frame as described above; and

[0055] A blower assembly including a drive motor and a fan;

[0056] a battery pack adapted to provide power to the drive motor;

[0057] The air blowing assembly is installed and configured on the working assembly installation portion, and the battery pack is installed and configured on the battery installation portion.

[0058] Furthermore, a central axis of the battery pack in a vertical direction is closer to the back surface than a central axis of the air blowing assembly in a vertical direction.

[0059] Compared with the prior art, the backpack blower provided in the present application has all the beneficial technical effects of the above-mentioned backpack frame, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0061] Figure 1 : A schematic diagram of the structure of a backpack blower according to a specific embodiment of the present invention;

[0062] Figure 2 : Exploded view of the structure of a backpack blower according to a specific embodiment of the present invention;

[0063] Figure 3 : An exploded view of the carrying frame structure of a specific embodiment of the present invention;

[0064] Figure 4 : A schematic diagram of the structure of the support member of a specific embodiment of the present invention when viewed from the back;

[0065] Figure 5: Schematic diagram of the first virtual plane S1 and the second virtual plane S2 in the specific embodiment of the present invention;

[0066] Figure 6 : Schematic diagram of the viewing angle structure of the other side of the support member relative to the back negative surface in the specific embodiment of the present invention;

[0067] Figure 7 : Schematic diagram of the wedge-shaped portion of the support member in the specific embodiment of the present invention. Detailed implementation manners

[0068] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0069] In this application, with reference to the back frame, "outer" refers to the direction away from the side where the person carries and the frame body, and "inner" refers to the direction facing the area surrounded by the frame body.

[0070] Refer to Figure 1 , Figure 2 and Figure 3 As shown, a back frame 100 provided in this application includes a frame body 10, where:

[0071] The frame body 10 includes a support member 10a near the side where the person carries, a covering member 10b connected to the support member 10a, and a cover body 10c movably hinged (such as pivotally connected) to the covering member 10b.

[0072] The covering member 10b corresponds to the operation component installation part 4 of the support member 10a, and the cover body 10c corresponds to the battery installation part 5 of the support member 10a. In the assembly operation, first, the assembled operation components are positioned and connected to the operation component installation part 4, and then the covering member 10b and the support member 10a are correspondingly connected and fixed to cover and connect and fix the operation components. The cover body 10c can rotate along the movable hinge connection with the covering member 10b to close or open the battery installation part 5.

[0073] Refer to Figure 4 and Figure 5 As shown, when observing from the back negative surface S of the support member 10a, the support member 10a includes:

[0074] A central support portion 1 and edge support portions 2 spaced apart from and on both sides of the central support portion 1;

[0075] The central axis L1 of the central support portion 1 and the edge lines (L2, L3) of the edge support portion 2 respectively form a first virtual plane S1 and a second virtual plane S2, and the first virtual plane S1 and the second virtual plane S2 respectively extend obliquely outward from the center to form an inwardly concave open cavity on the back side S of the support member 10a;

[0076] Reference Figure 6 As shown, when viewed from the side opposite to the back side S of the support member 10a, the support member 10a includes:

[0077] The operating component installation portion 4 is suitable for installing and connecting the operating component, and the operating component at least includes a driving motor;

[0078] The central support portion 1 and the edge support portion 2 spaced apart from each other form a spaced multi-stage support on the back side of the working component mounting portion 4 .

[0079] In the present application, a central support portion 1 and an edge support portion 2 are provided on the support member 10a close to the side on which the person is carrying the load, and an open cavity that is recessed inward is formed on the back surface S of the support member 10a, that is, it can be understood that the edge support portion 2 protrudes outward, and the central support portion 1 is recessed, and the central support portion 1 is at least partially located on the inner side of the plane formed by the outer edge of the edge support portion 2, forming a similar embracing design that caters to the curve of the human back. On the one hand, when the person is carrying the load, the load is more comfortable. At the same time, on the other hand, the mutually spaced central support portion 1 and the edge support portion 2 form a spaced multi-segment support on the back of the working component mounting portion 4, which strengthens the structure of the support member 10a.

[0080] Specifically, the multi-segment support structure formed by the interval arrangement of the central support portion 1 and the edge support portion 2 can disperse the force more evenly, improve the stability and bearing capacity of the overall structure, so that the support member 10a can withstand a larger operating load without being easily deformed or damaged.

[0081] Further, continue to refer to Figure 4 and Figure 7 As shown, when viewed from the back side S of the support member 10a, a partial spacing area between the central support portion 1 and the edge support portions 2 on both sides thereof is lower than the adjacent portions, forming a relatively low-lying structure to form an alternating convex and concave shape on the back side of the working component mounting portion 4.

[0082] Specifically, at the back position of the operation component installation part 4, an indentation 8 is formed by the inward depression of the interval area between the central support part 1 and the edge support parts 2 on both sides thereof. When observing from one edge support part 2 to the opposite edge support part 2, a convex-concave-convex-concave-convex shape is formed on the back of the operation component installation part 4, and the corresponding structural members are the edge support part 2 - the indentation 8 - the central support part 1 - the indentation 8 - the edge support part 2.

[0083] In this way, the alternately convex and concave shape formed can increase the bending resistance, compressive resistance and torsional resistance of the support member 10a. Moreover, while ensuring the structural strength, the use of materials can be reduced, thereby reducing the weight of the entire support member 10a.

[0084] Continue to refer to Figure 4 As shown, the central support part 1 extends downward to be connected to the bottom 3 of the frame main body 10, and is connected to the edge support part 2 by the horizontally extending bottom 3, so as to form a "Ш" shape on the back of the operation component installation part 4.

[0085] The connection manner of the central support part 1, the bottom 3 and the edge support part 2 forms a stable structural framework. Similar to the support structure of a bridge, it can effectively bear the pressure from the operation component and various external forces, ensuring the stability and reliability of the entire system. In addition, the "Ш" shape helps to evenly disperse stress and avoid stress concentration.

[0086] In addition, the above-mentioned central support part 1, edge support part 2 and bottom 3 are integrally formed. In this way, there are no splicing or connection gaps between the various parts, thus avoiding the stress concentration and weak strength points that may occur at these connection points, enabling the entire structure to bear greater loads and external forces and not being prone to fracture or deformation.

[0087] In addition, it should be particularly noted that:

[0088] The mutually spaced central support parts 1 and edge support parts 2 correspondingly support the front, middle and rear positions of the operation component installation part 4.

[0089] By providing supports at multiple positions, the force received by the operation component installation part 4 can be more evenly dispersed to each support part, reducing local concentrated stress, thereby improving the stability and reliability of the overall structure. Moreover, when the operation component is operating, vibrations will inevitably occur. Multiple support points can jointly absorb and disperse energy, reducing the vibration amplitude transmitted to the operation component and protecting the operation component from damage.

[0090] In addition, in order to make the back surface S more conform to the human back curve, the side of the edge support part 2 facing the back surface S is inclined from the outside to the inside.

[0091] Further, at least one side of the edge support portion 2 facing the back negative surface S is provided with a groove to form an alternately convex and concave shape on the side of the edge support portion 2 facing the back negative surface S, as Figure 4 shown in 2a, 2b. Thus, similarly, the alternately convex and concave shape formed can increase the bending resistance, compressive resistance, and anti-twisting ability of the edge support portion 2. Moreover, while ensuring the structural strength, the use of materials can be reduced, thereby further reducing the weight of the entire support member 10a.

[0092] Referring to Figure 3 , Figure 6 and Figure 7 shown, when observing from the side of the back negative surface S of the support member 10a, the support member 10a further includes:

[0093] A heat dissipation port 6, and the heat dissipation port 6 is communicated with the above-mentioned open cavity;

[0094] Further referring to Figure 6 shown, when observing from the side opposite to the back negative surface S of the support member 10a, the support member 10a includes:

[0095] A battery mounting portion 5, which is adapted to mount and connect the battery pack 200;

[0096] The heat dissipation port 6 is adapted to face and remain in communication with the heat dissipation surface of the battery pack 200 provided with a ventilation port.

[0097] The heat dissipation port 6 is communicated with the open cavity, and can provide a good heat dissipation channel for the battery pack 200. Hot air can be quickly discharged through the heat dissipation port, and cold air can enter, forming an effective convection, thereby reducing the working temperature of the battery pack 200.

[0098] Especially when applied to a backpack blower, the backpack blower generates a high-speed airflow during operation. By providing an air cooling channel communicated with the main operation air duct, a negative pressure can be formed in the air cooling channel, and the heat dissipation port 6 communicated therewith forms an air inlet, and the external airflow can be introduced into the battery pack through the heat dissipation port 6 and introduced into the main operation air duct through the air cooling channel, further enhancing the heat dissipation effect of the battery pack. It can be understood that at this time, the heat dissipation port 6, the air duct of the battery pack itself, the air cooling channel, and the main operation air duct are mutually communicated.

[0099] Further, referring to Figure 7 shown, when observing from the side of the back negative surface S of the support member 10a, a plurality of wedge-shaped portions 7 are respectively provided between the central support portion 1 and the edge support portions 2 on both sides thereof, and the heat dissipation port 6 is arranged at the bottom surface 7b of the wedge-shaped portion 7 to be covered and shielded by the upper inclined surface 7a of the wedge-shaped portion 7.

[0100] The upper inclined surface 7a of the wedge portion 7 can shield and protect the heat dissipation port 6, reducing the possibility of external objects directly entering the heat dissipation port, for example, preventing dust, debris, etc. from entering.

[0101] Continue to refer to Figure 7 As shown, one end of the wedge portion 7 in the transverse direction extends to connect with the edge support portion 2, and the other end extends close to the center support portion 1 and is in an open shape to communicate with the central area of the open cavity. This can enable the heat dissipation port 6 to better communicate with the open cavity, promote air circulation, and improve the heat dissipation efficiency.

[0102] Continue to refer to Figure 7 As shown, a diversion channel is formed between the upper inclined surface 7a of the wedge portion 7 and the bottom surface 7b of another adjacent wedge portion 7, and the diversion channel communicates with the heat dissipation port 6. The formation of the diversion channel can more effectively guide the air flow into the heat dissipation port 6. When the air flow passes between the upper inclined surface 7a of the wedge portion 7 and the bottom surface 7b of the adjacent wedge portion 7, it will flow along the direction of the diversion channel, thereby increasing the air flow rate and air flow speed entering the heat dissipation port 6 and improving the heat dissipation efficiency.

[0103] Furthermore, the back negative surface S of the support member 10a is adapted to connect the back strap 20b assembly 20. The back strap 20b assembly 20 includes a connecting portion 20a and a back strap 20b. The connecting portion 20a is connected to the back negative surface S of the support member 10a and forms an air flow chamber in combination with the open cavity.

[0104] Specifically, the connecting portion 20a is made of a porous breathable fabric.

[0105] Refer to Figure 3 As shown, as described above, the support member 10a includes:

[0106] An operation assembly installation portion 4, which is adapted to install and connect an operation assembly. The operation assembly includes at least one drive motor;

[0107] A battery installation portion 5, which is adapted to detachably install and connect a battery pack. The battery pack is adapted to supply power to the drive motor;

[0108] The battery installation portion 5 is located above the operation assembly installation portion 4.

[0109] The battery installation portion 5 is located above the operation assembly installation portion 4 to avoid too low a center of gravity. Those skilled in the art should know that too low a center of gravity will cause the frame to be unbalanced left and right or front and back when carried on the back, making it difficult for the carrier to maintain a stable posture and may affect the flexibility and safety of movement. In this way, the center of gravity of the entire frame is closer to the upper part of the human back, more stable when carried on the back, and reducing the imbalance caused by too low a center of gravity. Moreover, it is convenient for the installation and removal of the battery pack 200.

[0110] In addition, the present application also provides a backpack blower, which includes:

[0111] The backpack frame 100 as described above; and,

[0112] A blower assembly 300, which includes a driving motor and a fan;

[0113] A battery pack 200, suitable for supplying power to the driving motor;

[0114] The blower assembly 300 is installed and configured on the operation assembly installation part 4, and the battery pack 200 is installed and configured on the battery installation part 5.

[0115] Furthermore, the central axis L1 of the battery pack 200 in the vertical direction is closer to the back surface S than the central axis L1 of the blower assembly in the vertical direction.

[0116] In this way, setting the central axis of the battery pack closer to the back surface can make the center of gravity of the entire backpack frame closer to the human back, thereby improving the stability and balance during backpacking, and reducing fatigue and discomfort caused by the center of gravity shift. In addition, the center of gravity of the battery pack closer to the back helps to distribute the weight more evenly on the human back, reduce local pressure, and improve the comfort of backpacking.

[0117] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backpack blower, comprising: A frame body, and, A blowing assembly, which includes a driving motor and a fan; A battery pack adapted to supply power to the driving motor; characterized in that: The frame body includes a support member near the side where a person carries it on the back; When observing from the back side of the support member, the support member includes: A heat dissipation port; and, A central support portion and edge support portions spaced apart from and on both sides of the central support portion; The central axis of the central support portion and the edge lines of the edge support portions form a first virtual plane and a second virtual plane respectively, and the first virtual plane and the second virtual plane extend obliquely outward from the center to form an inwardly concave open cavity on the back side of the support member; The open cavity is communicated with the heat dissipation port, and the heat dissipation port is adapted to be opposite to and kept in communication with the heat dissipation surface of the battery pack provided with a ventilation port. When the backpack blower is operating, a high-speed air flow is generated. By providing an air cooling channel communicated with the main operation air duct, a negative pressure can be formed in the air cooling channel, and the heat dissipation port communicated therewith forms an air inlet, and the outside air flow can be introduced into the battery pack through the heat dissipation port and introduced into the main operation air duct through the air cooling channel; When observing from the side opposite to the back side of the support member, the support member includes: An operation assembly mounting portion adapted to mount and connect the blowing assembly; The spaced-apart central support portion and the edge support portions form spaced multi-segment supports on the back of the operation assembly mounting portion. Among them, at the back position of the operation assembly mounting portion, the spaced area between the central support portion and the edge support portions on both sides of it is recessed inward to form a low-lying portion.

2. The backpack blower according to claim 1, characterized in that: The central support portion extends downward to be connected to the bottom of the frame body, and is connected to the edge support portion by the horizontally extending bottom to form a "Ш" shape on the back of the operation assembly mounting portion.

3. The backpack blower according to claim 2, characterized in that: The central support portion, the edge support portion and the bottom are integrally formed.

4. The backpack blower according to claim 1, characterized in that: The spaced-apart central support portion and the edge support portions correspondingly support at the front, middle and rear positions of the operation assembly mounting portion.

5. The backpack blower according to claim 1, characterized in that: The side of the edge support portion facing the back side is inclined from outside to inside.

6. The backpack blower according to claim 1 or 5, characterized in that: At least one of the sides of the edge support portion facing the back side is provided with a groove to form an alternately convex and concave shape on the side of the edge support portion facing the back side.

7. The backpack blower according to claim 1, characterized in that: The support member further includes a battery mounting portion, and the battery mounting portion is detachably mounted and connected to the battery pack, and the battery pack is adapted to supply power to the driving motor; The battery mounting portion is located above the operation assembly mounting portion.

8. The backpack blower according to claim 1 or 7, characterized in that: The central axis of the battery pack in the vertical direction is closer to the back side than the central axis of the blower assembly in the vertical direction.

9. A backpack blower, comprising: A frame body, and, A blower assembly, which includes a drive motor and a fan; A battery pack adapted to supply power to the drive motor; characterized in that: The frame body includes a support member near the side where a person carries it, a covering member connected to the support member, and a cover body movably hinged to the covering member; Viewed from the back side of the support member, the support member includes: A heat dissipation port; and, A central support portion and edge support portions on both sides of the central support portion; The central axis of the central support portion and the edge lines of the edge support portions form a first virtual plane and a second virtual plane respectively, and the first virtual plane and the second virtual plane extend obliquely outward from the center to form an open cavity that is recessed inward on the back side of the support member; The open cavity communicates with the heat dissipation port; Viewed from the side opposite to the back side of the support member, the support member includes: A battery mounting portion adapted to mount and connect the battery pack; The heat dissipation port is adapted to face and remain in communication with the heat dissipation surface of the battery pack provided with a ventilation port. When the backpack blower is operating, a high-speed air flow is generated. By providing an air cooling channel connected to the main operation air duct, a negative pressure can be formed in the air cooling channel. The heat dissipation port connected thereto forms an air inlet, and the outside air flow can be introduced into the battery pack through the heat dissipation port and introduced into the main operation air duct through the air cooling channel. Among them, the cover body can rotate along the movable hinge connection with the covering member to close or open the battery mounting portion.

10. The backpack blower according to claim 9, characterized in that: Viewed from the back side of the support member, a plurality of wedge-shaped portions are respectively provided between the central support portion and the edge support portions on both sides thereof, and the heat dissipation port is provided at the bottom surface of the wedge-shaped portion so as to be covered by the upper inclined surface of the wedge-shaped portion.

11. The backpack blower according to claim 10, characterized in that: One end of the wedge-shaped portion in the transverse direction extends to be connected to the edge support portion, and the other end extends to be close to the central support portion and is in an open shape to communicate with the central area of the open cavity.

12. The backpack blower according to claim 11, characterized in that: A diversion channel is formed between the upper inclined surface of the wedge-shaped portion and the bottom surface of another adjacent wedge-shaped portion, and the diversion channel communicates with the heat dissipation port.

13. The backpack blower according to any one of claims 9 to 12, characterized in that: The back side of the support member is adapted to connect a back strap assembly, and the back strap assembly includes a connecting portion and a back strap. The connecting portion is connected to the back side of the support member and forms an air flow chamber in combination with the open cavity.

14. The backpack blower according to claim 13, characterized in that: The connecting portion is made of a porous and breathable fabric.

15. The backpack blower according to claim 9, wherein: the battery mounting part is detachably mounted to the battery pack, and the battery pack is adapted to supply power to the drive motor; the battery mounting part is located above the working component mounting part.

16. The backpack blower according to claim 9 or 15, wherein: the central axis of the battery pack in the vertical direction is closer to the back surface than the central axis of the blowing component in the vertical direction.

Images