Backpack Blower

Abstract

This invention relates to a backpack blower, the backpack frame of which includes a support member. The support member includes an inwardly extending partition wall that divides the inner side of the support member into a blower assembly mounting section and a battery mounting section. The blower assembly mounting section is adapted to mount and connect a blower assembly; the battery mounting section is adapted to mount and connect a battery pack. The blower assembly mounted and connected to the blower assembly mounting section contacts one side of the partition wall. During operation, the vibration force generated by the blower assembly is at least partially transmitted from the partition wall to the backpack frame, avoiding any part of the battery pack except for the connecting section. This technical solution effectively prevents the large vibrations generated by the blower assembly from being directly transmitted to the battery pack, providing a more stable installation environment for the battery pack and protecting the internal structure and electronic components of the battery pack from vibration damage.

Description

Technical Field

[0001] The invention relates to a blower, in particular to a backpack blower. Background Art

[0002] Compared with engine-type tools, electric tools are more environmentally friendly and thus widely used. In order to facilitate users to carry, backpack blowers are now mostly used. Users carry the equipment on their backs, and the weight of the equipment is borne by their bodies, which reduces the force on the hands and relieves user fatigue.

[0003] However, backpack blowers generally require large-capacity battery packs and large electric motors due to their high power and long discharge time, which causes the blower to vibrate more and is not conducive to the protection of the battery pack. Summary of the invention

[0004] The object of the present invention is to provide a backpack blower which can effectively reduce the vibration of a battery pack.

[0005] In view of this, the present application provides a backpack blower, comprising:

[0006] Carrying frame;

[0007] An air blowing assembly is arranged in the backpack frame, the air blowing assembly includes an air inlet cylinder and a duct assembly arranged along a transverse axis, the duct assembly includes a duct and a driving motor and a fan located in the duct;

[0008] A battery pack, adapted to provide power to the drive motor, so as to drive the motor to drive the fan to rotate and generate airflow through the main air duct of the blower assembly;

[0009] Features:

[0010] The backpack frame includes a support member, the support member includes a partition wall extending and protruding inward, and the partition wall divides the inner side of the support member into a blower assembly installation portion and a battery installation portion:

[0011] The air blowing assembly mounting portion is suitable for mounting and connecting the air blowing assembly;

[0012] The battery installation portion is suitable for installing and connecting the battery pack;

[0013] The blower assembly installed and connected to the blower assembly mounting portion contacts one side of the partition wall, and the exciting force generated by the vibration during the operation of the blower assembly is at least partially transmitted from the partition wall to the backpack frame while avoiding any part of the battery pack except the connecting part.

[0014] Furthermore, the air inlet end of the air blowing assembly is abutted by the air inlet tube and one end of the partition wall.

[0015] Furthermore, the air inlet cylinder is made of sponge material.

[0016] Furthermore, the air outlet end of the air blowing assembly is fixedly connected to the other end of the partition wall by a locking hoop.

[0017] Furthermore, an extension portion is provided on one side of the locking hoop along the transverse axis direction, and a first vibration-proof component is provided between the extension portion and the duct.

[0018] Furthermore, the partition wall is integrally formed with the supporting member, and a side thereof facing the air blowing assembly mounting portion is arc-shaped, constituting a part of the air blowing assembly mounting portion.

[0019] Further, the battery mounting portion includes a battery receiving cavity and a latch connecting portion;

[0020] When the battery pack is installed and connected to the battery installation part, it is latched and fixed with the latch connection part, suspended in the battery accommodating cavity, and spaced apart from any wall surface of the non-latch connection surface of the battery accommodating cavity.

[0021] Furthermore, any wall surface of the non-latch connection surface of the battery accommodating cavity is formed by the backpack frame.

[0022] Further, including:

[0023] A battery mounting seat connected to the partition wall, wherein one side of the battery mounting seat is adapted to be connected to and mounted on the battery pack and extends outward to form the latch connection portion, and the latch connection portion is correspondingly provided with an electrical connection terminal;

[0024] The battery pack installed and connected in the battery installation part is connected to the latch connection part to achieve the docking of the electrical connection terminal and the discharge port of the battery pack, and is spaced apart from the partition wall.

[0025] Furthermore, the partition wall is provided with a positioning groove adapted to the bottom shape and size of the battery mounting seat, the battery mounting seat is positioned and installed in the positioning groove, and is fixedly connected to the partition wall via a lug extending and protruding from the bottom of a connecting piece.

[0026] Further, the battery mounting seat has an upper bottom surface opposite to the bottom of the battery pack to support and abut against the battery pack;

[0027] The upper bottom surface protrudes from the partition wall and has a height difference with the partition wall.

[0028] Furthermore, an elastic assisting member suitable for abutting against the battery pack is provided on the upper bottom surface, and after the battery pack is installed in place, the elastic force of the elastic assisting member continuously acts on the battery pack.

[0029] Furthermore, the elastic assisting member comprises:

[0030] A booster arm, which is hinged to the battery mounting seat through a pin shaft and is suitable for rotating along the pin shaft, and the booster arm includes a connecting end and a booster lifting end;

[0031] A booster spring, one end of which is connected to the battery mounting seat, and the other end of which is connected to the connecting end;

[0032] The booster lifting end is suitable for protruding from the upper bottom surface under the elastic force of the booster spring on the connecting end.

[0033] Furthermore, a latch assembly is also provided on the battery mounting seat;

[0034] The latch assembly comprises a locking portion and an unlocking portion which are symmetrically distributed;

[0035] The locking portion is suitable for locking the battery pack correspondingly connected thereto;

[0036] The unlocking portion is adapted to unlock the battery pack in a locked state, the unlocking portion comprises a first unlocking portion and a second unlocking portion, each unlocking portion is adapted to be operated individually to unlock the corresponding first battery pack and the second battery pack, and / or;

[0037] The first unlocking portion and the second unlocking portion are both located within a touchable area of ​​a human hand, and a touch action of a human palm can simultaneously touch the first unlocking portion and the second unlocking portion, so that the locked states of the first battery pack and the second battery pack are synchronously unlocked.

[0038] Compared with the prior art, the beneficial technical effects of this application are:

[0039] During the operation of the blower assembly, the fan, motor and the flow of high-speed airflow cause greater vibrations at this position. The present application transfers at least part of the exciting force generated by the vibration during the operation of the blower assembly from the partition wall to the backpack frame and avoids any part of the battery pack except the connecting part. This can effectively prevent the larger vibrations generated by the blower assembly from being directly transmitted to the battery pack, provide a more stable installation environment for the battery pack, and protect the internal structure and electronic components of the battery pack from vibration damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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.

[0041] Figure 1 : A schematic diagram of the structure of a specific embodiment of the present invention;

[0042] Figure 2 : Schematic diagram of the explosion structure of a specific embodiment of the present invention;

[0043] Figure 3a : An exploded view of the internal structure of the backpack frame according to a specific embodiment of the present invention;

[0044] Figure 3b : Schematic diagram of the installation structure of the blast assembly in a specific embodiment of the present invention;

[0045] Figure 4 : Schematic diagram of the installation and connection structure of the battery mounting seat according to a specific embodiment of the present invention;

[0046] Figure 5a : A top view of the carrying frame structure of a specific embodiment of the present invention;

[0047] Figure 5b : A top view of the battery accommodating cavity structure according to a specific embodiment of the present invention;

[0048] Figure 6 : A three-dimensional diagram of a structure in which the upper bottom surface of a specific embodiment of the present invention protrudes from the partition wall;

[0049] Figure 7 : A front view of a structure in which the bottom surface of a specific embodiment of the present invention protrudes from the partition wall;

[0050] Figure 8 : A schematic diagram of the structure of an elastic assisting member according to a specific embodiment of the present invention;

[0051] Fig. 9 : Schematic diagram of the battery pack structure of a specific embodiment of the present invention. DETAILED DESCRIPTION

[0052] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Reference Figure 1 , Figure 2 and Figure 3a As shown, a backpack blower 100 provided in the present application includes a backpack frame 10, a blowing assembly 40 and a battery pack 50 arranged in the backpack frame 10, and a shoulder strap assembly 20 and an air outlet pipe assembly 30 connected to the backpack frame 10.

[0054] The carrying frame 10 includes a supporting member 10a close to the side of the person carrying the backpack, a covering member 10b connected to the supporting member 10a, and a cover body 10c movably hinged (eg, pivotally connected) to the covering member 10b.

[0055] The covering member 10b corresponds to the air blower assembly mounting portion 11 of the supporting member 10a, and the cover body 10c corresponds to the battery mounting portion 12 of the supporting member 10a. During the assembly operation, the assembled air blower assembly 40 is first positioned and connected to the air blower assembly mounting portion 11, and then the covering member 10b is correspondingly connected and fixed to the supporting member 10a to cover the air blower assembly 40. The cover body 10c can be rotated along the movable hinge connection with the covering member 10b to close or open the battery mounting portion 12. When the battery pack 50 is installed and connected to the battery mounting portion 12, the cover body 10c is closed to cover the battery pack 50 and maintain a gap with the upper part of the battery pack 50, i.e., the U side.

[0056] Continue to refer to Figure 2 As shown, the back surface S of the supporting member 10a is suitable for connecting with the shoulder strap assembly 20. The shoulder strap assembly 20 includes a connecting portion 20a and a shoulder strap 20b. The connecting portion 20a is connected with the back surface S of the supporting member 10a.

[0057] Continue to refer to Figure 3a As shown, the air blowing assembly 40 includes a driving motor 41 and a fan 42 arranged along a transverse axis; the driving motor 41 and the fan 42 are connected as a whole, and are fixedly arranged in a duct 43 in combination with a guide cone to form a duct assembly, and an air inlet cylinder 44 and an air inlet cover 45 are sequentially arranged on the air inlet side of the fan 42, which are assembled and connected with the duct assembly to form the air blowing assembly 40;

[0058] A plurality of battery packs 50 , such as a first battery pack 50 a and a second battery pack 50 b , are adapted to provide power to the drive motor 41 to drive the drive motor 41 to rotate the fan 42 to generate airflow through the main air duct of the air blowing assembly 40 .

[0059] Reference Figure 4 and Figure 5a , Figure 5b As shown, the support member 10a includes a partition wall 13 extending inwardly, and the partition wall 13 divides the inner side of the support member 10a into a blower assembly mounting portion 11 and a battery mounting portion 12:

[0060] The air blowing assembly mounting portion 11 is suitable for mounting and connecting the air blowing assembly 40;

[0061] The battery mounting portion 12 is suitable for mounting and connecting the battery pack 50. Fig. 9 As shown, the battery pack 50 has six viewing surfaces, namely, front (F), rear (B), left (L), right (R), top (U), and bottom (D). A connecting portion 500 that docks with the battery mounting portion 12 is arranged on the front (F) viewing surface. The battery pack 50 is connected to the blower assembly mounting portion 11 through the connecting portion 500, and in particular, an unlockable latch connection is formed with the blower assembly mounting portion 11 through the connecting portion 500 to facilitate free installation and disassembly.

[0062] The blower assembly 40 installed and connected to the blower assembly mounting portion 11 is in contact with one side of the partition wall 13. The exciting force generated by the vibration during the operation of the blower assembly 40 is at least partially transmitted from the partition wall 13 to the backpack frame 10 while avoiding any part of the battery pack 50 except the connecting part.

[0063] Those skilled in the art may know that when the air blowing assembly 40 is working, the driving motor 41 therein drives the fan 42 to rotate to generate airflow, and during this process, the air blowing assembly 40 will inevitably vibrate, thereby forming an exciting force.

[0064] The exciting force transmission path in this technical solution is as follows:

[0065] At least a part of the exciting force will be transmitted to the partition wall 13 through the contact point between the blowing assembly 40 and the partition wall 13, and then transmitted to the entire backpack frame 10 along the partition wall 13. During this process, most of the exciting force is dispersed in the backpack frame 10, and only a very small part is transmitted to the battery pack 50 through the connection part between the battery mounting part 12 and the battery pack 50 with relatively little influence, thereby avoiding the direct effect of the exciting force on the battery pack 50.

[0066] On the one hand, it can effectively prevent the large vibration generated by the air blowing assembly 40 from being directly transmitted to the battery pack 50, provide a more stable installation environment for the battery pack 50, and protect the internal structure and electronic components of the battery pack 50 from vibration damage. On the other hand, the vibration of the air blowing assembly 40 often generates noise, and transmitting the exciting force from the partition wall 13 to the backpack frame 10 can reduce the vibration transmission to the battery pack 50 and other components, thereby reducing the overall noise level of the device.

[0067] In addition, it is worth mentioning that the design that the exciting force is transmitted from the partition wall 13 to the backpack frame 10 and avoids the battery pack 50 allows the stress to be dispersed through the partition wall 13 and the backpack frame 10 when falling. This can reduce the stress locally borne by the battery pack 50 and reduce the occurrence of battery pack 50 shell rupture, internal component damage, etc.

[0068] In addition, the partition wall 13, as part of the supporting member 10a, enhances the overall structural strength of the backpack frame 10 to a certain extent. When the device falls, the stronger frame can better protect the internal battery pack 50 and the blower assembly 40. The partition wall 13 and the backpack frame 10 jointly bear the impact of the fall, reducing the pressure on the battery pack 50.

[0069] Further, refer to Figure 3b As shown, the air inlet end of the air blowing assembly 40 is abutted against one end 131 of the partition wall 13 by the air inlet tube 44, as shown by the contact surface 134. On the one hand, it provides a positioning and support point for the air blowing assembly 40, avoids the existence of an air inlet gap, and helps to reduce air flow disturbance during the air intake process. On the other hand, the vibration exciting force generated by the air blowing assembly 40 during operation can be more effectively transmitted to the partition wall 13 through the abutment between the air inlet tube 44 and the partition wall 13.

[0070] Furthermore, the air inlet 44 is made of a sponge material. The sponge material has good sound absorption performance. When air flows through the air inlet, the noise generated by the airflow will be absorbed by the porous structure of the sponge, thereby reducing the noise generated when the blower is working. In addition, the soft texture of the sponge can play a buffering role to a certain extent, which can avoid direct damage to the whole machine caused by rigid collision.

[0071] Further, continue to refer to Figure 3b As shown, the air outlet end of the air blowing assembly 40 is fixedly connected to the other end 132 of the partition wall 13 by a locking hoop 7, thereby positioning and fixing the air blowing assembly 40 from both ends, making it more firmly installed in the backpack frame 10. At the same time, similar to the air inlet end, the connection of the air outlet end also participates in the transmission path of the vibration excitation force of the air blowing assembly 40, and the vibration generated during operation can be transmitted to the partition wall 13 through the locking hoop 7, and then further dispersed to the backpack frame 10.

[0072] Specifically, one end 70a of the locking hoop 7 is connected and fixed to the positioning connecting column 133 on the other end 132 of the partition wall 13 by a connecting member such as a screw or bolt, and the other end 70b is connected and fixed to the positioning connecting column 110 on the frame by a connecting member such as a screw or bolt.

[0073] Furthermore, an extension portion 71 is provided on one side of the locking hoop 7 along the transverse axis direction, and a first vibration-proofing component 80 is provided between the extension portion 71 and the duct 43 . The first vibration-proofing component 80 can effectively isolate and absorb part of the vibration and reduce the vibration.

[0074] In addition, a second vibration-proof member 81 is provided between the duct 43 and the frame at the blower assembly mounting portion 11. When the blower assembly 40 is working, a part of the vibration generated by the operation of the drive motor 41 and the fan 42 will be transmitted through the duct 43. The second vibration-proof member 81 can effectively block and absorb this part of the vibration and prevent it from being directly transmitted to the frame at the blower assembly mounting portion 11. This can reduce the shaking and deformation of the frame caused by vibration and maintain the stability of the frame structure. In addition, after the vibration transmitted by the duct is attenuated by the second vibration-proof member 81, the noise radiated by the frame will also be reduced accordingly.

[0075] Further, continue to refer to Figure 4 As shown, the partition wall 13 is integrally formed with the support member 10 a , and a side thereof facing the air blowing assembly mounting portion 11 is arc-shaped, constituting a part of the air blowing assembly mounting portion 11 .

[0076] The partition wall 13 and the support member 10a are integrally formed, making the entire structure more stable. During the use of the backpack blower, especially when subjected to vibration, impact or falling, the integrally formed structure can better withstand external forces and reduce the risk of loosening and separation between the partition wall and the support member. At the same time, the side of the partition wall 13 facing the blower assembly mounting portion 11 is arc-shaped. This arc-shaped structure can better withstand the force transmitted by the blower assembly. The arc-shaped surface can evenly disperse the force to the surrounding support members, reduce local stress concentration, and reduce the possibility of damage to the partition wall due to uneven force.

[0077] Specifically, continue to refer to Figure 4 Combined with Figure 5a , Figure 5b and Fig. 9 As shown, the battery mounting portion 12 includes a battery receiving cavity 120 and a latch connection portion 61;

[0078] When the battery pack 50 is installed and connected to the battery mounting portion 12, the connection portion 500 arranged on the front (F) viewing surface of the battery pack 50 is latched and fixed to the latch connection portion 61, suspended in the battery accommodating cavity 120, and spaced apart from any wall surface of the non-latch connection surface 120a, 120b, 120c of the battery accommodating cavity 120.

[0079] Specifically, refer to Figure 5a As shown, when the battery pack 50 is installed and connected to the battery mounting portion 12, as viewed from the top view of the blower, the periphery of the battery pack 50, such as the first battery pack 50a and the second battery pack 50b, is connected to the battery pack 50 by latching, i.e. Fig. 9As shown in the F side, the other sides (B side, L side, R side) respectively maintain gaps with the inner wall surface of the battery accommodating cavity 120, as shown in the gaps C1, C2, and C3. That is, the battery pack 50 is suspended in the battery accommodating cavity 120 at this time, and is spaced apart from any wall surface of the non-latch connection surface 120a, 120b, 120c of the battery accommodating cavity 120.

[0080] The battery pack is suspended in the battery receiving cavity and spaced apart from the wall of the non-latch connection surface 120a, 120b, 120c, which can greatly reduce the transmission of external vibration to the battery pack. When the blower is working, the vibration generated by the blower assembly and other vibrations that the device may be subjected to during use will not be directly transmitted to the battery pack, thereby protecting the electronic components and chemical structure inside the battery and extending the service life of the battery.

[0081] In addition, the existence of gaps provides space for air to flow around the battery pack. During the operation of the equipment, the battery pack generates heat, and air can circulate through these gaps to take away the heat, thereby improving the heat dissipation effect of the battery pack, preventing the battery from overheating, and ensuring the performance and safety of the battery.

[0082] Furthermore, any wall surface of the non-latch connection surface 120a, 120b, 120c of the battery accommodating cavity 120 is formed by the backpack frame 10. By using the backpack frame 10 to form the wall surface, the battery accommodating cavity 120 is more integrated with the structure of the entire backpack blower, and the space of the backpack frame 10 is fully utilized. There is no need to set up an additional independent battery accommodating cavity wall structure, thereby making the overall structure of the equipment more compact.

[0083] Further, continue to refer to Figure 4 and Figure 6 As shown, the battery mounting seat 60 is connected to the partition wall 13, and one side of the battery mounting seat 60 is suitable for connecting and mounting the battery pack 50 and extending outward to form a latch connection portion 61, and the latch connection portion 61 is correspondingly provided with an electrical connection terminal 63;

[0084] The battery pack 50 installed and connected in the battery mounting portion 12 is connected to the latch connecting portion 61 to achieve docking of the electrical connection terminal 63 with the discharge port of the battery pack 50, and is spaced apart from the partition wall 13. At this time, the D side of the battery pack 50 is spaced apart from the partition wall 13.

[0085] The partition wall 13 provides support and positioning for the battery mounting seat 60, making the battery mounting portion 12 more solid and capable of withstanding the weight of the battery pack 50 and the vibration generated during use, thereby reducing the risk of loosening and damage of components.

[0086] The battery pack 50 is spaced apart from the partition wall 13. Specifically, the D side of the battery pack 50 is spaced apart from the partition wall 13, thereby avoiding direct contact between the battery pack 50 and the partition wall 13. The lower portion of the partition wall 13 forms a part of the blower assembly mounting portion 11, which is in direct contact with the blower assembly 40. During operation, the blower assembly 40 vibrates greatly at this position due to the flow of the fan, motor and high-speed airflow. At this time, the battery pack 50 is spaced apart from the partition wall 13, thereby effectively avoiding the large vibration generated by the blower assembly 40 from being directly transmitted to the battery pack 50.

[0087] In addition, when the whole device falls, the battery pack 50 and the partition wall 13 are spaced apart to provide a certain buffer space for the battery pack 50 when the device falls. When the device is hit, the partition wall 13 will not directly transmit the impact force to the battery pack 50, but will partially absorb and disperse the impact force through the air or other media in the space, thereby reducing the direct impact strength of the battery pack. Moreover, the spacing can reduce the contact stress between the battery pack and the partition wall at the moment of falling. If there is no spacing, the battery pack and the partition wall may instantly generate a large contact force when falling, which may easily lead to problems such as rupture of the battery pack shell and damage to internal components. By setting the spacing, this instantaneous stress is reduced, and the battery pack's ability to resist damage in the event of a fall is improved.

[0088] Furthermore, the partition wall 13 is provided with a positioning groove 130 adapted to the bottom shape and size of the battery mounting seat 60. The battery mounting seat 60 is positioned and installed in the positioning groove 130, and is fixedly connected to the partition wall 13 through a connecting member, such as a lug 67 extending and protruding from the bottom thereof, which is penetrated by a bolt. At this time, the partition wall 13, as a part of the supporting member 10a, is firmly connected to the battery mounting seat 60, so that the various external forces to which the device is subjected during use can be better withstood.

[0089] Further, refer to Figure 6 and Figure 7 As shown, the battery mounting base 60 has an upper bottom surface 64 opposite to the bottom of the battery pack 50 to support and abut the battery pack 50;

[0090] The upper bottom surface 64 protrudes from the partition wall 13 and has a height difference H2 with the partition wall 13 .

[0091] The upper bottom surface protrudes from the partition wall and has a height difference H2 with the partition wall, so that the battery pack 50 and the partition wall 13 can be spaced apart.

[0092] Furthermore, an elastic assisting member 65 suitable for contacting the battery pack 50 is disposed on the upper bottom surface 64 . After the battery pack 50 is installed in place, the elastic force of the elastic assisting member 65 continuously acts on the battery pack 50 .

[0093] On the one hand, when the battery pack 50 needs to be removed, the elastic assisting member 65 abuts against the battery pack 50 and can provide an upward elastic force, which can help the user to easily remove the battery 50 from the battery mounting seat 60, greatly reducing the difficulty and effort of disassembly;

[0094] On the other hand, the battery pack 50 is spaced apart from the partition wall 13 to avoid direct contact between the battery pack 50 and the partition wall 13. When the battery pack 50 is installed and connected, it only contacts the elastic booster 65 with an elastic design, further avoiding direct contact with other components that may transmit vibration to the greatest extent. The elastic booster 65 can more effectively absorb and buffer vibrations from all directions, provide a more stable installation environment for the battery pack 50, and protect the internal structure and electronic components of the battery pack 50 from vibration damage.

[0095] Further references Figure 8 As shown, the elastic assisting member 65 includes:

[0096] The power-assisting arm 650 is hinged to the battery mounting base 60 through a pin shaft 651 and is adapted to rotate along the pin shaft 651. The power-assisting arm 650 includes a connecting end 650a and a power-assisting lifting end 650b;

[0097] A booster spring 652, one end of which is connected to the battery mounting seat 60, and the other end of which is connected to the connecting end 650a;

[0098] The assisting lifting end 650b is adapted to protrude from the upper bottom surface 64 under the elastic force of the assisting spring 652 on the connecting end 650a.

[0099] The assisting lifting end 650b protrudes from the upper bottom surface 64 under the action of the assisting spring 652. When the battery pack is installed, the battery pack will compress the assisting lifting end 650b, causing the assisting arm 650 to rotate around the pin shaft and compressing the assisting spring 652. When the battery pack needs to be removed, the elastic restoring force of the assisting spring 652 will be transmitted to the assisting lifting end 650b through the connecting end 650a, lifting the battery pack 50 upward, making it convenient for users to quickly remove the battery pack and improving the convenience of operation.

[0100] After the battery pack 50 is installed in place, the elastic force of the booster spring 652 continuously acts on the battery pack 50 through the booster lifting end 650b. At this time, the booster spring 652 can not only provide lifting force and supporting force, but also play a role in buffering and shock absorption. During the operation of the device, the booster spring can absorb and buffer external vibration and impact, reduce the impact on the battery pack, and protect the internal structure and electronic components of the battery pack.

[0101] Further, a latch assembly 66 is provided on the battery mounting seat;

[0102] The latch assembly 66 includes a locking portion 660 and an unlocking portion 661 that are symmetrically distributed;

[0103] The locking portion 660 is adapted to lock the battery pack 50 correspondingly connected thereto;

[0104] The unlocking portion 661 is adapted to unlock the battery pack 50 in a locked state, and the unlocking portion 661 includes a first unlocking portion 661a and a second unlocking portion 661b, each of which is adapted to be operated individually to unlock the corresponding battery pack 50, i.e., the first battery pack 50a and the second battery pack 50b, and / or;

[0105] The first unlocking portion 661a and the second unlocking portion 661b are both located within the touchable area of ​​a human hand. A touch action of a human palm can simultaneously touch the first unlocking portion 661a and the second unlocking portion 661b, so that the locked states of the first battery pack 50a and the second battery pack 50b are unlocked synchronously.

[0106] In this way, a flexible and convenient unlocking function is provided.

[0107] Individual unlocking: Each unlocking part can be individually operated to unlock the corresponding battery pack, which provides greater flexibility for users. For example, in some cases, users may only need to replace one battery pack without unlocking both battery packs at the same time. This individual unlocking function facilitates user operation and improves convenience of use.

[0108] Synchronous unlocking function: When the first unlocking part and the second unlocking part are both within the touchable area of ​​a human hand, a touch of the human palm can simultaneously touch the two unlocking parts, so that the locked states of the two battery packs are unlocked synchronously. This is very convenient when it is necessary to replace two battery packs at the same time or perform other operations, saving time and operation steps.

[0109] In addition, the design takes into account the actual operation needs of users, so that the unlocking operation can be completed with one hand. This is very convenient in actual use, especially when users need to replace the battery pack in a narrow space or other situations where it is inconvenient to operate with both hands, the one-handed unlocking function can improve the user experience.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backpack blower, comprising: Carrying frame (10); A blower assembly (40) is disposed in the backpack frame (10), the blower assembly (40) comprising an air inlet cylinder (44) and a duct assembly arranged along a transverse axis, the duct assembly comprising a duct (43) and a drive motor (41) and a fan (42) located in the duct (43); A battery pack (50) is adapted to provide power to the driving motor (41) so as to drive the motor (41) to drive the fan (42) to rotate and generate airflow through a main air duct of the air blowing assembly (40); Features: The backpack frame (10) includes a support member (10a), the support member (10a) includes a partition wall (13) extending and protruding inward, and the partition wall (13) divides the inner side of the support member (10a) into a blower assembly mounting portion (11) and a battery mounting portion (12): The air blowing assembly mounting portion (11) is suitable for mounting and connecting the air blowing assembly (40); The battery mounting portion (12) is suitable for mounting and connecting the battery pack (50); The battery installation portion (12) comprises a battery accommodating cavity (120) and a latch connection portion (61); When the battery pack (50) is installed and connected to the battery installation portion (12), it is latched and fixed with the latch connection portion (61), suspended in the battery receiving cavity (120), and spaced apart from any wall surface of the non-latch connection surface (120a, 120b, 120c) of the battery receiving cavity (120); The blower assembly (40) installed and connected to the blower assembly mounting portion (11) is in contact with one side of the partition wall (13), and the exciting force of the vibration generated during the operation of the blower assembly (40) is at least partially transmitted from the partition wall (13) to the backpack frame (10) while avoiding any part of the battery pack (50) except the connecting part.

2. The backpack blower according to claim 1, characterized in that: The air inlet end of the air blowing assembly (40) is abutted against one end of the partition wall (13) by the air inlet cylinder (44).

3. The backpack blower according to claim 2, characterized in that: The air inlet cylinder (44) is made of sponge material.

4. The backpack blower according to any one of claims 1 to 3, characterized in that: The air outlet end of the air blowing assembly (40) is fixedly connected to the other end of the partition wall (13) by a locking hoop (7).

5. The backpack blower according to claim 4, characterized in that: An extension portion (71) is provided on one side of the locking hoop (7) along the transverse axis direction, and a first vibration-proof component is provided between the extension portion (71) and the duct (43).

6. The backpack blower according to claim 1, characterized in that: The partition wall (13) is integrally formed with the support member (10a), and the side thereof facing the air blowing assembly mounting portion (11) is arc-shaped, constituting a part of the air blowing assembly mounting portion (11).

7. The backpack blower according to claim 1, characterized in that: Any wall surface of the non-latch connection surface (120a, 120b, 120c) of the battery accommodating chamber (120) is formed by the backpack frame (10).

8. The backpack blower according to claim 1 or 7, characterized in that: include: A battery mounting seat (60) connected to the partition wall (13), wherein one side of the battery mounting seat (60) is adapted to be connected to and mounted on the battery pack (50) and extends outward to form the latch connection portion (61), wherein the latch connection portion (61) is correspondingly provided with an electrical connection terminal; The battery pack (50) installed and connected in the battery installation part (12) is connected to the latch connection part (61) to achieve docking of the electrical connection terminal with the discharge port of the battery pack (50), and is spaced apart from the partition wall (13).

9. The backpack blower according to claim 8, characterized in that: The partition wall (13) is provided with a positioning groove adapted to the shape and size of the bottom of the battery mounting seat (60); the battery mounting seat (60) is positioned and mounted in the positioning groove and is fixedly connected to the partition wall (13) via a lug extending and protruding from the bottom of the battery mounting seat through a connecting piece.

10. The backpack blower according to claim 8, characterized in that: The battery mounting seat (60) has an upper bottom surface (64) opposite to the bottom of the battery pack (50) so as to support and abut against the battery pack (50); The upper bottom surface (64) protrudes from the partition wall (13) and has a height difference with the partition wall (13).

11. The backpack blower according to claim 10, characterized in that: An elastic assisting member (65) suitable for abutting against the battery pack (50) is provided on the upper bottom surface; after the battery pack (50) is installed in place, the elastic force of the elastic assisting member (65) continuously acts on the battery pack (50).

12. The backpack blower according to claim 11, characterized in that: The elastic assisting member (65) comprises: A booster arm (650) is hinged to the battery mounting seat (60) via a pin shaft and is suitable for rotating along the pin shaft. The booster arm (650) includes a connecting end and a booster lifting end; A booster spring, one end of which is connected to the battery mounting seat (60) and the other end of which is connected to the connecting end; The booster lifting end is suitable for protruding from the upper bottom surface under the elastic force of the booster spring on the connecting end.

13. The backpack blower according to claim 8, characterized in that: The battery mounting seat (60) is also provided with a latch assembly; The latch assembly comprises a locking portion and an unlocking portion which are symmetrically distributed; The locking portion is suitable for locking the battery pack (50) correspondingly connected thereto; The unlocking part is suitable for unlocking the battery pack (50) in a locked state, and the unlocking part comprises a first unlocking part and a second unlocking part, each unlocking part is suitable for being operated individually to unlock the corresponding first battery pack (50a) and the second battery pack (50b), and / or; The first unlocking part and the second unlocking part are simultaneously located within a touchable area of ​​a human hand, and a touch action of a human palm can simultaneously touch the first unlocking part and the second unlocking part, so that the locked states of the first battery pack (50a) and the second battery pack (50b) are synchronously unlocked.

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