HAND-HELD POWER TOOL WITH LIGHTING ELEMENT

• US 20150251299A1
• Filed: 03/09/2015
• Published: 09/10/2015
• Est. Priority Date: 03/07/2014
• Status: Active Grant

• Current Assignee: Chervon (HK) Limited (Chervon Holdings Limited)
• Original Assignee: Chervon Intellectual Property Limited (Chervon Holdings Limited)
• Inventors: Wei, Gan, Fu, Xiangqing, Zhou, Fengqin
• Granted Patent: US 10,040,181 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/18 Devices for illuminating the head of the screw or the nut
• CPC Class Codes: B25F 5/021 with guiding devices guiding devices for hand tools on stands or supports B25H1/0078
• CPC Class Codes: F21V 33/0084 Hand tools; Toolboxes

Abstract

A hand-held power tool includes a housing defining a first longitudinal axis and an illuminating assembly mounted to the housing. The illuminating assembly includes lighting elements distributed on the housing around the first longitudinal axis, a circuit board electrically connected to the lighting elements, a main body, and a fixing member. The lighting elements are supported by the circuit board. The main body partially covers the lighting elements and the circuit board. The lighting elements and the main body are fixed to the housing by the main body cooperative with the fixing member. The lighting elements are distributed around the first longitudinal axis so that light of the lighting elements can be emitted from multiple different angles, shadows are avoided in corresponding zones, and therefore the lighting elements can be called shadow-less lighting elements.

Claims

1. A hand-held power tool, comprising:

a housing defining a first longitudinal axis; and

an illuminating assembly mounted to the housing, the illuminating assembly comprising;

a plurality of lighting elements distributed on the housing around the first longitudinal axis;

a circuit board electrically connected to the lighting elements, and the lighting elements being supported by the circuit board;

a main body at least partially covering the lighting elements and the circuit board; and

at least one fixing member wherein the plurality of lighting elements and the main body are fixed to the housing by the main body cooperative with the at least one fixing member.

2. The hand-held power tool according to claim 1, wherein the housing forms a mounting portion for the fixing member, the mounting portion defines a second longitudinal axis parallel to the first longitudinal axis, the main body has a first cover substantially sleeved on the housing and a second cover permitting light illuminated from the plurality of lighting elements to pass there-through wherein the fixing member passes through the second cover and engages in the mounting portion, so as to fix the first cover, the second cover, the lighting element and the circuit board to the housing.

3. The hand-held power tool according to claim 2, wherein the fixing member defines a third longitudinal axis, the second longitudinal axis and the third longitudinal axis are positioned in a same axis, the first cover forms a plurality of stop portions that are arranged along a radial direction of the first longitudinal axis and which extend towards the direction of the first longitudinal axis, the first cover defines a plurality of grooves arranged along a radial direction of the first longitudinal axis and which extend towards a direction that is away from a direction of the first longitudinal axis, the first cover further includes a first end away from the housing portion and a second end mounted on the second housing portion, the first end forms an end surface, the second cover forms a plurality of restricting portions corresponding to the plurality of stop portions, a plurality of protrusions corresponding to the plurality of grooves, and an outer surface positioned adjacent to the end surface, the plurality of restricting portions are arranged along a radial direction of the first longitudinal axis and extend away from the direction of the first longitudinal axis and are prevented from moving along the first longitudinal axis by the stop portions, the plurality of protrusions are arranged along a radial direction of the first longitudinal axis and extend away from the direction of the first longitudinal axis and wherein the plurality of protrusions extend through the plurality of grooves.

4. The hand-held power tool according to claim 3, wherein the plurality of lighting elements are three LEDs evenly distributed around the first longitudinal axis, the at least one fixing member are two screws, the second cover forms three receiving portions for respectively receiving lighting elements and defines two through holes, each screw passes through one of the through holes, the receiving portions are transparent and permit light illuminated from the lighting elements to pass there-through.

5. The hand-held power tool according to claim 1, wherein the illuminating assembly further comprises a shock-absorbing element positioned between the housing and the circuit board or between the main body and the circuit board.

6. The hand-held power tool according to claim 2, further comprising a motor, an execution element, an output shaft for driving the execution element, a transmission mechanism for transmitting the rotary power of the motor to the output shaft, and a main circuit board for controlling the motor, the housing comprising a first housing portion for receiving the motor, a second housing portion for receiving the transmission mechanism, and a third housing portion for a user to hold, the third housing portion defining a fourth longitudinal axis substantially perpendicular to the first longitudinal axis, the illuminating assembly further comprising a wire and a wire guide, the wire including a first end electrically connected to the circuit board and a second end opposite to the first end electrically connected to the main circuit board, the wire guide comprising a first guide portion and a second guide portion, the wire passing the first guide portion to extend through the second housing portion and being guided by the second guide portion.

7. The hand-held power tool according to claim 6, wherein the first guide portion is positioned in the first cover or in the second housing portion, the second guide section is positioned in the first housing portion or in the second housing portion, the first guide portion is located in or above a plane that the first longitudinal axis is positioned in and the plane is perpendicular to the fourth longitudinal axis, and the second guide portion extends along a circumferential direction of the first longitudinal axis.

8. The hand-held power tool according to claim 6, further comprising a heat insulating member disposed between the second housing portion and the wire.

9. The hand-held power tool according to claim 6, further comprising a battery pack, wherein at least one of the lighting elements is capable of indicating whether the battery pack has a sufficient power source, when the battery pack has an insufficient power source, the at least one of the lighting elements is capable of producing an alarm signal that a human can perceive.

10. The hand-held power tool according to claim 6, wherein the output shaft extends through the first cover and the second cover, the second cover covering the gap between first cover and second housing portion.

11. A hand-held power tool, comprising:

a housing defining a first longitudinal axis;

a motor received in the housing;

an execution element;

an output shaft for driving the execution element;

a transmission mechanism for transmitting the rotary power of the motor to the output shaft;

an illuminating assembly mounted to the housing, the illuminating assembly comprising;

a plurality of lighting elements distributed on the housing around the first longitudinal axis;

a circuit board electrically connected to the lighting elements, and the lighting elements being supported by the circuit board;

a main body at least partially covering the lighting elements and the circuit board; and

at least one fixing member wherein the plurality of lighting elements and the main body are fixed to the housing by the main body cooperative with the at least one fixing member; and

a battery pack for providing power source to the motor and the plurality of lighting elements, at least one of the plurality of lighting elements function to indicate whether the battery pack has a sufficient power source and produce an alarm signal that a human can perceive when the battery pack has an insufficient power source.

12. The hand-held power tool according to claim 11, wherein the housing forms a mounting portion for the fixing member, the mounting portion defines a second longitudinal axis parallel to the first longitudinal axis, the main body has a first cover substantially sleeved on the housing and a second cover permitting light illuminated from the plurality of lighting elements to pass there-through wherein the fixing member passes through the second cover and engages in the mounting portion, so as to fix the first cover, the second cover, the lighting element and the circuit board to the housing.

13. The hand-held power tool according to claim 12, wherein the fixing member defines a third longitudinal axis, the second longitudinal axis and the third longitudinal axis are positioned in a same axis, the first cover forms a plurality of stop portions arranged along a radial direction of the first longitudinal axis and which extend towards the direction of the first longitudinal axis, the first cover defines a plurality of grooves arranged along a radial direction of the first longitudinal axis and which extend towards a direction away from the direction of the first longitudinal axis, the first cover further includes a first end distal from the housing portion and a second end mounted on the second housing portion, the first end forms an end surface, the second cover forms a plurality of restricting portions corresponding to the plurality of stop portions, a plurality of protrusions corresponding to the plurality of grooves, and an outer surface positioned adjacent to the end surface, the plurality of restricting portions are arranged along a radial direction of the first longitudinal axis and extend away from the direction of the first longitudinal axis, and are prevented from moving along the first longitudinal axis by the stop portions, the plurality of protrusions are arranged along a radial direction of the first longitudinal axis, and extend away from the direction of the first longitudinal axis, the plurality of protrusions extend through the plurality of grooves.

14. The hand-held power tool according to claim 13, wherein the plurality of lighting elements are three LEDs evenly distributed around the first longitudinal axis, the at least one fixing member are two screws, the second cover forms three receiving portions for respectively receiving lighting elements and defines two through holes, each screw passes through one of the through holes, and the receiving portions are transparent and permit light illuminated from the lighting elements to pass there-through.

15. The hand-held power tool according to claim 11, wherein the illuminating assembly further comprises a shock-absorbing element positioned between the housing and the circuit board or between the main body and the circuit board.