Backpack tool system and backpack power supply apparatus thereof

Patent metadata

Field	Value
Publication number	US-10892449-B2
Application number	US-201816058049-A
Country	US
Kind code	B2
Filing date	Aug 8, 2018
Priority date	Sep 6, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A backpack tool system and a backpack power supply apparatus for use with an electric tool. The backpack power supply apparatus includes a battery pack for providing electric energy, a body for carrying the battery pack, and a wearable device connected to the body and wearable by a user to carry the body. The battery pack is detachably connected to the body. The body defines a plane and a height extending in a heightwise direction. The body is at least partially symmetrical about the plane. The wearable device includes a strap, which includes an upper end connected to an upper portion of the body. The upper end of the strap applies a force to the body when the user wears the wearable device. An included angle between a projection of a direction of the force on the plane and the heightwise direction is greater than or equal to 30 degrees and less than or equal to 50 degrees.

First claim

What is claimed is:

1. A backpack power supply apparatus, comprising:
a battery pack for providing electric energy;
a body for supporting the battery pack, wherein the battery pack is detachably connected to the body, the body is at least partially symmetrical about a plane, and the body defines a height in a heightwise direction;
a wearable device connected to the body and wearable by a user to carry the body, wherein the wearable device comprises a strap, the strap comprises an upper end connected to an upper portion of the body, and the upper end of the strap applies a force to the body when the user wears the wearable device;
an electric energy transmission device electrically coupled to the battery pack for outputting the electric energy of the battery pack, wherein the electric energy transmission device is provided with a first electric energy output interface; and
a securing member for securing the first electric output interface,
wherein an included angle between a projection of a direction of the force on the plane and the heightwise direction is greater than or equal to 30 degrees and less than or equal to 50 degrees, and
wherein the securing member is secured to the wearable device or the battery pack, the electric energy transmission device comprises a cable, the first electric energy output interface is disposed at an end of the cable, the securing member is provided with a first securing slot for securing the cable and a second securing slot for securing the first electric energy output interface, and an opening of the second securing slot is larger than an opening of the first securing slot.

2. The backpack power supply apparatus of claim 1 , wherein the body further defines a depth in a front-rear direction, the battery pack is connected to a rear portion of the body, a front portion of the body is provided with a back plate extending along the heightwise direction, and a projection of a center of gravity of an entirety formed of the battery pack and the body on the plane is between a projection of a straight line on which the force is located on the plane and a projection of the back plate on the plane.

3. The backpack power supply apparatus of claim 1 , wherein the body further defines a depth in a front-rear direction, the battery pack is connected to a rear portion of the body, a front portion of the body is provided with a back plate extending along the heightwise direction, and a ratio of a distance from a center of gravity of an entirety formed of the battery pack and the body to the back plate to a length of the entirety formed of the battery pack and the body in the front-rear direction is greater than 0 and less than or equal to 0.85.

4. The backpack power supply apparatus of claim 1 , wherein the wearable device comprises a back pad for contacting a back of the user and the back pad is slidably connected to the body along the heightwise direction.

5. The backpack power supply apparatus of claim 4 , wherein the back pad is secured to the strap.

6. The backpack power supply apparatus of claim 5 further comprising a slider slidably connected to the body, wherein the back pad is secured to the slider, the body is provided with a guide slot, and the slider is provided with a protrusion sliding along the guide slot.

7. The backpack power supply apparatus of claim 1 , wherein the battery pack is slidably connected to the body, a projection of the body on the plane is L-shaped, and a projection of the battery pack on the plane is located in an included angle region of the L-shaped projection of the body.

8. The backpack power supply apparatus of claim 1 , wherein the body comprises a base for supporting the body and a guide portion for guiding the battery pack to slide relative to the body and along the heightwise direction and the base and the guide portion form an L shape.

9. The backpack power supply apparatus of claim 8 , wherein two side stoppers protrude from the guide portion toward the battery pack and the two side stoppers are located on two sides of the battery pack respectively.

10. The backpack power supply apparatus of claim 1 , wherein an opening of the first securing slot is smaller than a diameter of the cable.

11. The backpack power supply apparatus of claim 10 , wherein the securing member comprises a securing member body and a clamping portion, the securing member body is secured to the strap, the clamping portion is provided with a first support arm and a second support arm, and the second securing slot is formed between the first support arm and the second support arm.

12. The backpack power supply apparatus of claim 11 , wherein a first end of the second support arm is connected to the securing member body, a second end of the second support arm is provided with a second bending portion, and the first electric energy output interface is located between the securing member body and the second bending portion.

13. The backpack power supply apparatus of claim 12 , wherein an included angle between the second bending portion and the second support arm is greater than 90 degrees and less than or equal to 135 degrees.

14. The backpack power supply apparatus of claim 11 , wherein the securing member body and the clamping portion are integrally formed and the securing member body is provided with a mounting slot for securing the securing member to the strap.

15. The backpack power supply apparatus of claim 11 , wherein the first securing slot and the second securing slot are located on a same side of the securing member body.

16. The backpack power supply apparatus of claim 10 , wherein an area of a projection of the first securing slot is smaller than an area of a projection of the second securing slot.

17. The backpack power supply apparatus of claim 10 , wherein the opening of the second securing slot is larger than the diameter of the cable.

18. The backpack power supply apparatus of claim 1 , wherein the securing member is located on a front of a body of the user and the battery pack is located on a rear of the body of the user when the user wears the wearable device.

19. A backpack tool system, comprising:
a battery pack for providing electric energy;
a body for carrying the battery pack, wherein the battery pack is detachably connected to the body, the body is at least partially symmetrical about a plane, and the body defines a height in a heightwise direction;
a wearable device connected to the body and wearable by a user to carry the body, wherein the wearable device comprises a strap, the strap comprises an upper end connected to an upper portion of the body, and the upper end of the strap applies a force to the body when the user wears the wearable device; and
an electric tool comprising a motor and a housing for accommodating at least part of the motor;
wherein an included angle between a projection of a direction of the force on the plane and the heightwise direction is greater than or equal to 30 degrees and less than or equal to 50 degrees, and the battery pack is detachably connected to the housing and powers the motor.

20. A backpack tool system, comprising:
a backpack power supply apparatus;
a first electric tool; and
a second electric tool,
wherein the backpack power supply apparatus comprises:
a battery pack;
a body for carrying the battery pack, wherein the battery pack is detachably connected to the body; and
a wearable device connected to the body and wearable by a user to carry the body,

wherein the wearable device comprises a strap,
wherein th

Assignees

• Nanjing Chervon Ind Co Ltd

Inventors

• Yamaoka toshinari
• Dai Kaichao

Classifications

• A45F2003/122

  Back cushioning parts or details of backpacks, e.g. with ventilation · CPC title

• H02K7/145

  Hand-held machine tool · CPC title

• A45F3/04

  Sacks or packs carried on the body by means of two straps passing over the two shoulders · CPC title

• A45F2003/003

  combined with other objects; specially adapted for carrying specific objects · CPC title

• H01M50/50

  Current conducting connections for cells or batteries · CPC title