WO2009000134A1

WO2009000134A1 - An automatic opening and closing pivotal assembly with manual functions

Info

Publication number: WO2009000134A1
Application number: PCT/CN2007/070773
Authority: WO
Inventors: Qin Lu; Jun Xu
Original assignee: Zhejiang Voso Science Technology Co., Ltd.
Priority date: 2007-06-25
Filing date: 2007-09-25
Publication date: 2008-12-31
Also published as: CN201053443Y

Abstract

The present invention provides an automatic opening and closing pivotal assembly with manual functions. Its driving element includes a drag-cup type micromotor and a planet gearbox, and the output of the micromotor is directly connected with the input of said planet gearbox. The assembly also includes a movable arm and a friction coupling mechanism. The output shaft of the planet gearbox is connected with the friction coupling mechanism. One end of the movable arm is connected with the friction coupling mechanism and the other end is connected with the movable bracket. The structure of the assembly is simple, and it can not only be automatically opened and closed by push-keys but also can be manually done by the friction coupling mechanism, furthermore it will not destroy the micromotor and the gearbox. It can be used for notebooks, digital cameras, link elements for display screens and bodies of portable DVDs, and link elements for telescopic and rotable aerials and bases of GPS.

Description

Manual automatic opening and closing shaft device

Technical field

The present invention relates to a connecting member between a member to be rotated and a fixed member, and more particularly to a device for automatically opening and closing a shaft with a manual type.

Background technique

As a connecting component, the rotating shaft is widely used in the display screen of the image display and the body of the notebook computer, the digital video camera and the portable DVD player, and the connecting elements of the retractable rotating antenna and the base in the GPS, etc., which can make the LCD screen, Stop at any position when the antenna is turned on.

In 2007, the applicant applied for a one-word damping shaft, the application number is 200720104062.2.

The applicant applied for the MSI electric shaft in 2007, and the application number is 200720149585.9.

However, the miniature damper shafts used can only be operated manually, while the electric shafts can only be operated by the control keys, each of which has advantages and disadvantages. But they can't have both.

Summary of the invention

The object of the present invention is to provide a solution to the problem that the rotating shaft can only be manually operated or only electrically operated, and a dual-purpose rotating shaft device capable of both electric operation and manual operation is provided to compensate for the shortage of the above two kinds of rotating shafts. Their respective advantages.

The invention relates to a manual automatic opening and closing shaft device, which is composed of a hollow cup DC micro motor and a planetary gear transmission. The output of the micro motor is directly connected to the input of the planetary gearbox. The device further comprises: a movable arm and a friction combining device, wherein a friction coupling device is connected to an output shaft of the planetary gear transmission, and one end of the movable arm is connected to the friction combining device, and the other end is connected to the movable bracket;

The invention has a manual type automatic opening and closing hinge device, wherein: the friction combining device comprises: a plurality of spacers, a plurality of disc spring pieces and a fastening nut with a gasket, the end of the output shaft is a semicircular shaft or The flat shaft, the spacer, the movable arm and the spacer are sequentially assembled on the semicircular or flat shaft, and the hole of the spacer is similar in shape to the semicircular or flat shaft, and the hole of the movable arm set on the semicircular or flat shaft is a circle. a plurality of disc spring pieces and a gasketed fastening nut are sequentially mounted on the end of the semicircular shaft or the flat shaft, and the movable arm and the plurality of spacers are fixed on the semicircular shaft or the flat shaft;

The invention relates to a manual automatic opening and closing hinge device, wherein: the friction combining device further comprises: two oil guiding spacers and a secondary movable arm, and two oil guiding oils are arranged between the disc spring piece and the fastening nut a spacer, a pair of movable arms are disposed between the two oil guiding pads, and an outer end of the auxiliary movable arm is fixed on the movable arm; The invention has a manual type automatic opening and closing hinge device, wherein: the friction combining device is composed of a friction input half shaft and a sleeve, one end of the movable arm is a rotating shaft, the sleeve has an axial opening, and the inner diameter of the sleeve is slightly Less than the outer diameter of the friction input half shaft and the rotating shaft, the rotating shaft and the friction input half shaft are respectively sleeved at two ends of the inner diameter of the sleeve, and the friction input half shaft is connected to the output shaft of the planetary gear transmission ;

The invention has a manual automatic opening and closing hinge device, wherein: the friction combining device is composed of a friction output shaft and a shaft inner sleeve, one end of the movable arm is a female shaft, and the shaft inner sleeve has an axial crack, and the shaft inner sleeve is The outer diameter is slightly larger than the inner diameter of the friction output shaft and the female shaft, and the friction output shaft and the female shaft are respectively sleeved at two ends of the outer diameter of the inner sleeve of the shaft, and the friction output shaft is connected to the output shaft of the planetary gear transmission. ;

The invention has a manual automatic opening and closing hinge device, wherein: the shaft inner sleeve is circular, pentagonal or polygonal; the invention has a manual automatic opening and closing hinge device, wherein: the planetary gear transmission comprises: a sun a wheel, a planet gear, an internal gear and a bracket, the motor shaft of the micro motor is connected to the first stage sun gear, and each stage of the planet wheel is mounted on a corresponding shaft on a bracket integrated with the next stage sun wheel The last stage of the freewheel is mounted on a bracket that is integral with the planetary gearbox output shaft.

The utility model relates to a manual automatic opening and closing hinge device, which combines the advantages of the electric shaft keying operation and the randomness of various manual operations of various damping shafts, and is used as a display screen for images in a notebook computer, a digital camera device and a portable DVD player. The connecting elements of the fuselage, as well as the connecting elements of the retractable rotating antenna and the base in the GPS, can make the use of these products more humanized and more convenient, and at the same time improve the grade of the product.

DRAWINGS

Figure 1 is a schematic view of the automatic opening and closing shaft device with manual type according to the present invention;

2 is a schematic view showing a frictional combination device using a disc spring piece in the first embodiment of the manual automatic opening and closing hinge device of the present invention;

3 is a schematic view showing a frictional coupling device with a pair of movable arms in a second embodiment of the manual automatic opening and closing hinge device of the present invention;

Figure 4 is a schematic view showing a bushing friction combining device in a third embodiment of the manual automatic opening and closing hinge device of the present invention;

Figure 5 is a schematic view showing the use of the in-shaft sleeve friction combining device in the fourth embodiment of the manual automatic opening and closing hinge device of the present invention;

6 is a schematic view of a planetary gear transmission and a motor assembly in a manual automatic opening and closing hinge device according to the present invention;

In order to further illustrate the present invention, a more detailed description will be given below in conjunction with the embodiments. First embodiment

Specifically, Fig. 1 and Fig. 2 show an electric and manual dual-purpose shaft device which uses a disc spring piece 43 to generate friction. Specifically, an electric and manual dual-purpose shaft device includes a fixed support plate 1, a planetary gear transmission 3, a micro motor 2, a movable bracket 6, a movable arm 5, and a friction combining device 4, at the fixed support plate 1 A planetary gearbox 3 is fixedly mounted, and a micromotor 2 having the same diameter as the planetary gearbox 3 is connected to the other end of the planetary gearbox 3, and an output shaft of the micromotor 2 is connected to the planetary gearbox 3 The input shaft 41 of the planetary gearbox 3 is connected with a friction coupling device 4, one end of which is connected to the friction combining device 4, and the other end is connected to the movable bracket 6, for example: the movable bracket 6 and the notebook computer The display is fixed and the fixed support 1 is fixed to the body of the notebook.

As shown in FIG. 6, the planetary gearbox 3 is equipped with a multi-stage planetary gear. The multi-stage planetary gears share an internal gear 31, and the motor shaft 21 of the micro-motor 2 is directly connected to the sun gear 38 of the first-stage planetary gears, each stage. The planet gears 37 are mounted on a shaft 35 on the bracket 36 which is integrally formed with the lower stage sun gear 34. The final stage of the planet gears is mounted on a bracket 33 which is integrated with the output shaft 41, and is multi-staged by a planet. The wheel deceleration converts the speed of the micro motor 2 into a low speed and high torque output. Here the planet wheels can be three or four.

The output shaft 41 of the planetary gearbox is directly connected to a friction combining device 4, and the end of the output shaft 41 is a semi-circular shaft or a flat shaft. On the output shaft 41, the gasket 42, the movable arm 5, and the spacer 42 are sequentially arranged. The disc spring piece 43 is finally fastened by a gasketed fastening nut 44; wherein the inner hole of the washer 42 corresponds to the friction input shaft 41, that is, the washer 42 cannot rotate relative to the friction input shaft 41; The hole of 5 is circular and can be rotated about the friction input shaft 41. The spacers 42 are mounted on both sides of the movable arm 5, and one side is mounted on each side (two pieces in this embodiment); the disc spring piece 43 is selected according to the required pressure, and this embodiment is four pieces.

In the friction combining device, the pressure of the disc spring piece 43 is utilized to generate a frictional force between the rotatable movable arm 5 and the fixed spacer 42. When the external force is greater than the frictional force, the movable arm 5 rotates; Otherwise, the movable arm 5 and the spacer 42 are held in relative position by the frictional force.

When the electric mode is used, the output of the micromotor 2 is decelerated by the planetary gearbox 3 and output to the output shaft 41. Due to the friction between the movable arm 5, the spacer 42 and the disc spring piece 43, the movable arm 5 is caused. Rotating with the output shaft 41, thereby moving the movable bracket 6 to open or close the display.

When the display is turned on or off by hand when the power is not applied (that is, the manual mode is not used by the electric method), since the self-locking torque of the planetary gearbox is larger than the maximum static friction torque of the friction combining device 4, the friction input shaft 41 is maintained. In a constant position, the external force pushes the movable bracket 6 to move, and the movable arm 5 can be rotated around the friction input shaft 41 by an external force, so that the display screen can be opened or closed.

Second embodiment Fig. 3 shows a second embodiment. The difference from the first aspect described above is that between the disc spring piece 43 and the fastening nut 44, the oil guide gasket 46, the auxiliary movable arm 45, the further oil guiding gasket 46, and the auxiliary movable arm 45 are sequentially added. The outer end and the movable arm 5 are fixed together by nuts or rivets. The purpose of this solution is to increase the vertical contact area between the movable arm 5 and the friction input shaft 41, thereby improving the reliability of the friction combining device 4; and by using the oil guiding gasket 46, the moving hand of the friction combining device 4 can be improved.

The above two examples are friction-bonding devices that use a disc-shaped spring piece to generate friction. Two examples of the use of a bushing to generate friction are described below.

Third embodiment

As shown in FIG. 4, in the present embodiment, the friction combining device 4 is composed of a friction input half shaft 401 and a sleeve 402. One end of the movable arm 5 is a rotating shaft 403, and the sleeve 402 has an axial crack with an inward or The outer diameter of the sleeve 402 is slightly smaller than the outer diameters of the friction input half shaft 401 and the rotating shaft 403, and the rotating shaft 403 and the friction input half shaft 401 are respectively sleeved on both ends of the inner diameter of the sleeve 402, and the friction input half type The shaft 401 is coupled to the output shaft 41 of the planetary gearbox 3, and the shaft 403 and the friction input half shaft 401 are forcibly inserted into the inner diameter of the sleeve 402 during installation, which is generated between the sleeve 402 and the friction bearing shaft 403. Friction force; appropriately selecting the diameter of both and the elasticity of the sleeve, a suitable frictional force can be obtained, thereby realizing the function of the same friction combining device as the two embodiments described above.

Although the movable arm 5 in this embodiment has a different shape from the movable arm in the foregoing embodiment, the functions are the same, and the connection manner is similar, and need not be described.

Fourth embodiment

As shown in FIG. 5, the friction combining device 4 is composed of a friction output shaft 501 and an inner shaft sleeve 502. One end of the movable arm 5 is a female shaft 503. The inner shaft sleeve 502 has an axial crack, and the outer diameter of the inner shaft sleeve 502 is slightly larger than the friction. The inner diameter of the output shaft 501 and the female shaft 503, the friction output shaft 501 and the female shaft 503 are respectively fitted at both ends of the outer diameter of the inner shaft sleeve 502, and the friction output shaft 501 is connected to the output shaft of the planetary gear transmission 3. 41, the front end of the shaft inner sleeve 502 needs to be tightened during installation, and the friction output shaft 501 and the female shaft 503 are forcibly inserted into the inner shaft sleeve 502.

In this embodiment, the inner sleeve 502 may be circular, or may be a polygon such as a pentagon or a hexagon.

The manual automatic opening and closing hinge device of the present invention is a combination of a prior art damping shaft and an electric rotating shaft. Choice: When the micro-electric shaft is not connected to the power supply, when the movable bracket 6 is rotated by external force, the self-locking torque of the planetary gearbox is greater than the maximum static friction torque of the friction rotating shaft, and the static friction torque of the friction combining device is greater than any angle of the movable bracket 6. Supporting torque; When the power is supplied, the torsional moment of the planetary gearbox output is greater than the static friction torque of the friction combining device, so that both the manual and electric conditions can be freely switched.

According to the above several embodiments, in the manual automatic opening and closing hinge device of the present invention, various frictions can be used. Combine the devices, not just the ones mentioned above.

Various modifications and improvements of the technical solutions of the present invention should be made by those skilled in the art without departing from the scope of the present invention. The technical content claimed in the present invention is fully described in the claims. Subject to it.

Claims

1. A manual automatic opening and closing hinge device, comprising a fixed support plate (1), a planetary gear transmission (3), a micro motor (2) and a movable bracket (6), wherein the fixed support plate (1) A planetary gearbox (3) is fixedly mounted, and a micromotor (2) having the same diameter as the planetary gearbox (3) is connected to the other end of the planetary gearbox (3), the micromotor ( The output of 2) is directly connected to the input of the planetary gearbox (3), characterized in that the device further comprises: a movable arm (5) and a friction combining device (4), the planetary gearbox (3) A friction coupling device (4) is connected to the output shaft (41), and one end of the movable arm (5) is connected to the friction coupling device (4), and the other end is connected to the movable bracket (6).

2. The manual automatic opening and closing spindle device according to claim 1, wherein: said friction bonding device (4) comprises: a plurality of spacers (42), a plurality of disc spring pieces (43) and a spacer Composed of a fastening nut (44), the end of the output shaft (41) is a semi-circular shaft or a flat shaft, and the gasket (42), the movable arm (5) and the gasket (42) are sequentially fitted on the semicircular shaft or the flat On the shaft, the hole of the gasket (42) is similar in shape to the semicircular or flat shaft, and the movable arm (5) is rounded on the semicircular or flat shaft, and a plurality of disc spring pieces (43) and belt mats are provided. The fastening nut (44) of the piece is sequentially attached to the end of the semicircular or flat shaft, and the movable arm (5) and the plurality of spacers (42) are fixed on the semicircular or flat shaft.

A manual automatic opening and closing hinge device according to claim 2, wherein: said friction coupling device (4) further comprises: two oil guiding spacers (46) and a secondary movable arm (45), Two oil guiding gaskets (46) are disposed between the disc spring piece (43) and the fastening nut (44), and a pair of movable arms (45) are disposed between the two oil guiding gaskets (46), the pair Moving arm

The outer end of (45) is fixed to the movable arm (5).

4. The manual automatic opening and closing hinge device according to claim 1, wherein: said friction coupling device (4) is composed of a friction input half shaft (401) and a sleeve (402), and the movable arm (5) One end is a rotating shaft (403), the sleeve (402) has an axial crack, and the inner diameter of the sleeve (402) is slightly smaller than the outer diameter of the friction input half shaft (401) and the rotating shaft (403), the rotating shaft ( 403) and a friction input half shaft (401) are respectively sleeved at both ends of the inner diameter of the sleeve (402), and the friction input half shaft (401) is connected to an output shaft of the planetary gearbox (3) ( 41).

A manual automatic opening and closing hinge device according to claim 1, wherein: said friction coupling device (4) is composed of a friction output shaft (501) and an inner shaft sleeve (502), and the movable arm (5) One end is a mother shaft (503), the shaft inner sleeve (502) has an axial crack, and the outer diameter of the shaft inner sleeve (502) is slightly larger than the inner diameter of the friction output shaft (501) and the female shaft (503), the friction An output shaft (501) and a female shaft (503) are respectively sleeved at both ends of the outer diameter of the inner sleeve (502), and the friction output shaft (501) is connected to an output shaft of the planetary gearbox (3) ( 41).

1 6. The manual automatic opening and closing hinge device according to claim 5, wherein: the inner sleeve (502) is circular, pentagonal or hexagonal.

The manual automatic opening and closing hinge device according to any one of claims 1 to 6, characterized in that: the planetary gear transmission (3) comprises: a sun gear, a planetary gear, an internal gear and a bracket, The motor shaft (21) of the micro motor (2) is connected to the first stage sun gear (38), and each stage of the planet wheel (37) is mounted on a bracket integrated with the lower stage sun gear (34) ( 36) On the corresponding shaft (35), the freewheel of the last stage is mounted on a bracket (33) that is integral with the output shaft (41) of the planetary gearbox (3).

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