Patents by Inventor Bor-Haw Chang

Bor-Haw Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140175954
    Abstract: A base structure for cooling fan includes a seat, a circuit board and a motor assembly. The seat has an inner side served as a supporting surface. The circuit board has a first side attached to a top of the supporting surface and an opposite second side having a plurality of electronic elements provided thereon. The motor assembly includes a plurality of stacked silicon steel plates located on the circuit board and above the electronic elements. With the first side of the circuit board being attached to the supporting surface of the seat and the electronic elements on the second side of the circuit board being located in spaces between the motor assembly and the circuit board, more silicon steel plates can be stacked in the motor assembly to enable upgraded motor working efficiency and reduced electric current needed by the cooling fan to operate.
    Type: Application
    Filed: December 23, 2012
    Publication date: June 26, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Ping-Tsang Ho, Cheng-Chuan Hsu, Hung-Yi Hsu
  • Publication number: 20140127016
    Abstract: A band-type fan structure includes a transmission band body and multiple blades. The transmission band body has a lengthwise direction and a widthwise direction. The blades are side by side disposed on the transmission band body in parallel to each other and arranged in the lengthwise direction of the transmission band body. Each two adjacent blades define therebetween a flow way. The transmission band body is movable in the lengthwise direction, whereby the blades are driven by the transmission band body to transversely move to create an air volume. The band-type fan structure has a greatly minified volume. Also, the band-type fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 8, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Liang-Ji Chang
  • Publication number: 20140117800
    Abstract: A laser-welded joint structure between insulation frame and bearing cup of fan includes a base having a bearing cup and a stator having at least one insulation frame. The insulation frame includes a sleeve portion defining a bore axially extending therethrough. The sleeve portion is provided on an inner wall surface with at least one pressing section that radially projects into the bore to press a lower side against an upper end of the bearing cup and a bearing received therein. A portion of at least one lateral side of each pressing section that is in contact with the upper end of the bearing cup is melted by laser beam to form a laser-welded joint, so that the insulation frame and the bearing cup are integrally connected together at reduced manufacturing cost and have increased structural strength. A method of forming the laser-welded joint structure is also disclosed.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 1, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Ping-Tsang Ho, Chin-Sung Pan, Feng Liu
  • Publication number: 20130248144
    Abstract: A fan module includes a heat transfer unit, a heat radiation unit, and at least one cross-flow fan. The heat radiation unit has an air-in side and an air-out side. The cross-flow fan is located against the heat radiation unit, and includes a frame and a centrifugal fan blade assembly. The frame has an air outlet, a plurality of air inlets, and a plurality of frame sections. The frame sections respectively have a receiving recess therein, and the receiving recesses are communicable with one another to together define a receiving space for receiving the centrifugal fan blade assembly therein. With the above arrangements, the cross-flow fan can create increased air flow volume, the space occupied by the fan module can be reduced, and upgraded heat dissipation performance can be achieved.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Inventors: Bor-Haw Chang, Liang-Ji Chang
  • Publication number: 20130216404
    Abstract: A bladeless fan structure includes a driving member, a pipe member, and at least one air-pressure increasing area. The driving member has a shaft connected and extended through the pipe member, and a first space is formed between an inner surface of the pipe member and an outer surface of the shaft. The air-pressure area is provided on the inner surface of the pipe member or the outer surface of the shaft. The pipe member is provided with at least one opening communicating with the first space and the air-pressure increasing area. When the driving member drives the shaft to rotate in and relative to the pipe member, air in the first space is brought to flow and is compressed in a direction along the air-pressure increasing area to blow out of the pipe member via the opening to achieve the function of a bladeless fan.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 22, 2013
    Inventors: Bor-Haw Chang, Shih-Chieh Lin
  • Publication number: 20130189130
    Abstract: A fan motor structure includes a fan frame, a rotor, at least one magnetic element, and a stator. The fan frame includes a frame body and a frame cover that are closed to each other to define a receiving space between them; and a shaft seat mounted on a bottom of the frame body to locate in the receiving space. The rotor includes a hub rotatably connected to the shaft seat, and a plurality of blades outward extended from an outer surface of the hub. The magnetic element is connected to each of the blades in a continuous manner or in a discontinuous manner. The stator is arranged in the receiving space between a bottom of the frame body and the blades. With the fan motor structure, a fan can have increased air intake, produce more air flows and be assembled with reduced time and labor.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 25, 2013
    Inventors: Bor-Haw Chang, Kuo-Chen Chang
  • Patent number: 8482207
    Abstract: A temperature controlling system for a LED module includes at least one LED unit, at least one fan, at least one temperature sensor and a controlling device. The controlling device generates a driving signal for controlling the rotating speed of the fan based on a temperature detection signal transmitted from the temperature sensor, so that the fan can generate a compulsive airflow for dissipating the heat generated by the LED unit. According to the present invention, the working temperatures of the respective LED units can be kept the same, and a uniform heat-dissipating effect can be achieved.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 9, 2013
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Sung-Hsien Sun, Bor-Haw Chang
  • Publication number: 20130171016
    Abstract: An oil-retaining bearing fan structure includes a fan base seat, an oil-retaining bearing and a fan impeller. The fan base seat has a bearing cup on one side. At least one magnetic member is enclosed in the bearing cup. The magnetic member serves to apply a magnetic attraction force to a shaft of the fan structure to make the shaft quickly restore to its optimal operation position so as to reduce wear and lower the noises and vibration of the fan structure in operation. Therefore, the lifetime of the fan structure can be prolonged.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Inventors: Bor-Haw Chang, Shu-Fan Liu
  • Publication number: 20130168060
    Abstract: A thermal module includes a heat radiating unit, a heat transfer unit, and at least one cross-flow fan. The heat radiating unit has an air inlet and an air outlet that communicate with each other. The heat transfer unit has a heat absorbing section attached to a heat source and a heat dissipating section extended from the heat absorbing section to connect to the heat radiating unit. The cross-flow fan is arranged opposite to the heat radiating unit with an air-out side of the cross-flow fan located adjoining to the air inlet of the heat radiating unit. With the above arrangements, the thermal module occupies a largely reduced area while providing largely upgraded heat dissipation effect.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Inventors: Bor-Haw Chang, Chin-Sung Pan, Liang-ji Chang
  • Publication number: 20130149155
    Abstract: A rotor shaft includes a main body having a central portion and an extension portion. The extension portion has a plurality of extension sections radially outward extended from the central portion by different distances to together define a peripheral surface and a non-circular cross section of the main body. In a cooling fan using the rotor shaft, the main body of the rotor shaft is received in a shaft space internally defined by a bearing of the fan, and a lubricant is filled in a space left between the main body and the shaft space. With the non-circular cross section of the main body of the rotor shaft, the lubricant filled between the rotor shaft and the shaft space can have increased support pressure to thereby reduce the noise and vibration caused by frictional contact of the rotor shaft with the bearing during the operation of the cooling fan.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Shu-Fan Liu
  • Publication number: 20130149140
    Abstract: A bearing structure includes a main body internally defining a shaft space; the shaft space axially extends a full length of the main body and communicates with at least one extension space; and the extension space is radially outward extended from the shaft space and also axially extends a full length of the main body. The shaft space has a non-circular cross section. In a cooling fan using the bearing structure, a rotor shaft is inserted in the shaft space. With the shaft space having a non-circular cross section, it is possible to largely increase the support pressure of a lubricant filled between the rotor shaft and the shaft space and accordingly, reduce the frictional contact between the rotor shaft and the shaft space as well as the noise and vibration produced during the operation of the cooling fan.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Shu-Fen Liu
  • Publication number: 20130142645
    Abstract: An oil-retaining bearing fan device includes a fan base seat, at least one oil-retaining bearing and at least one magnetic member. The oil-retaining bearing is disposed in a bearing hole of the fan base seat. The oil-retaining bearing has at least one receiving hole for receiving the magnetic member therein. The magnetic member serves to apply a magnetic attraction force to a shaft of the fan device to make the shaft quickly restore to its optimal operation position so as to reduce wear and lower the noises and vibration of the fan device in operation. Therefore, the lifetime of the fan device can be prolonged.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 6, 2013
    Inventors: Bor-Haw Chang, Shu-Fen Liu
  • Publication number: 20130142646
    Abstract: An oil-retaining bearing fan structure includes a fan base seat, an oil-retaining bearing and at least one magnetic member. The oil-retaining bearing is disposed in a bearing hole of the fan base seat. The magnetic member is disposed between the oil-retaining bearing and a wall of the bearing hole. The magnetic member serves to apply a magnetic attraction force to a shaft of the fan structure to make the shaft quickly restore to its optimal operation position so as to reduce wear and lower the noises and vibration of the fan structure in operation. Therefore, the lifetime of the fan structure can be prolonged.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 6, 2013
    Inventors: Bor-Haw Chang, Shu-Fen Liu
  • Publication number: 20130142654
    Abstract: The present invention provides a fan device having a self-lubricating bearing. The fan device includes a fan base and at least one self-lubricating bearing. The self-lubricating bearing is disposed in a bearing hole of the fan base and has a bearing surface assembly. The bearing surface assembly is provided with at least one magnetic element. By this arrangement, the magnetic element generates a magnetic attractive force to the spindle, thereby making the spindle to return to its optimal position rapidly. In this way, wear, noise and vibration are reduced. Further, the lifetime of the fan device is extended.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 6, 2013
    Inventors: Bor-Haw CHANG, Shu-Fen LIU
  • Patent number: 8353671
    Abstract: A fan with pressurizing structure includes a rotor having a main body, blades spaced on the main body, a magnetic body annularly mounted in the main body, and a shaft axially connected to an inner side of the main body; a frame having a sleeve and at least one bearing rotatably received in the sleeve, and an opposing end of the shaft being inserted into the bearing; a stator assembly fitted around the sleeve and including silicon steel plates and a base plate; and a plurality of first pressurizing sections selectively provided on one of the base plate and an end face of the magnetic body. With the first pressurizing sections, deposition of moisture and salt fog in the sleeve and the rotor can be prevented to avoid corroded and damaged bearing and rotor shaft, and the service life of the whole fan is increased.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: January 15, 2013
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Bor-Haw Chang, Shu-Fan Liu, Chang-Hsien Liu
  • Patent number: 8162592
    Abstract: A heat dissipating module includes a rotational member, a stationary member and a driving member. The rotational member is provided with a first air outlet and connected to the driving member. The stationary member is provided with a second air outlet and has plural flow passages. Each of flow passages has an air inlet at an end thereof and a third air outlet at another end thereof. When the driving member actuates the rotational member to rotate, air enters the flow passages of the stationary member via the air inlets to gather at the third outlets. Then, the air is guided outward via the first and the second air outlet for concentrating the air to cool the heat-producing object.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: April 24, 2012
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Bor-Haw Chang, Chu-Hsien Chou
  • Publication number: 20120081007
    Abstract: A temperature controlling system for a LED module includes at least one LED unit, at least one fan, at least one temperature sensor and a controlling device. The controlling device generates a driving signal for controlling the rotating speed of the fan based on a temperature detection signal transmitted from the temperature sensor, so that the fan can generate a compulsive airflow for dissipating the heat generated by the LED unit. According to the present invention, the working temperatures of the respective LED units can be kept the same, and a uniform heat-dissipating effect can be achieved.
    Type: Application
    Filed: September 30, 2010
    Publication date: April 5, 2012
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Sung-Hsien Sun, Bor-Haw Chang
  • Publication number: 20110091315
    Abstract: A fan with pressurizing structure includes a rotor having a main body, blades spaced on the main body, a magnetic body annularly mounted in the main body, and a shaft axially connected to an inner side of the main body; a frame having a sleeve and at least one bearing rotatably received in the sleeve, and an opposing end of the shaft being inserted into the bearing; a stator assembly fitted around the sleeve and including silicon steel plates and a base plate; and a plurality of first pressurizing sections selectively provided on one of the base plate and an end face of the magnetic body. With the first pressurizing sections, deposition of moisture and salt fog in the sleeve and the rotor can be prevented to avoid corroded and damaged bearing and rotor shaft, and the service life of the whole fan is increased.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 21, 2011
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Shu-Fan Liu, Chang-Hsien Liu
  • Publication number: 20100108302
    Abstract: A heat dissipating module includes a rotational member, a stationary member and a driving member. The rotational member is provided with a first air outlet and connected to the driving member. The stationary member is provided with a second air outlet and has plural flow passages. Each of flow passages has an air inlet at an end thereof and a third air outlet at another end thereof. When the driving member actuates the rotational member to rotate, air enters the flow passages of the stationary member via the air inlets to gather at the third outlets. Then, the air is guided outward via the first and the second air outlet for concentrating the air to cool the heat-producing object.
    Type: Application
    Filed: December 23, 2009
    Publication date: May 6, 2010
    Inventors: Bor-Haw Chang, Chu-Hsien Chou
  • Patent number: 7670102
    Abstract: A heat dissipating module includes a rotational member, a stationary member and a driving member. The rotational member meshes with the driving member and has an uneven surface at a side thereof to space to the stationary member. The stationary member has plural flow passages and each flow passage has an air inlet at an end thereof and an air outlet at another end thereof. When the driving member actuates the rotational member to rotate with the fluid, the fluid enters the stationary member via the inlet and gathers at the outlet before being guided outward for concentrating the air and cooling the heat dissipated object.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: March 2, 2010
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Bor-Haw Chang, Chu-Hsien Chou