TWI538328B - Power supply apparatus for rotating shaft - Google Patents

Description

Rotary shaft power supply device

The invention relates to a rotating shaft power supply device, in particular to a rotating shaft power supply device for supplying power to an electronic component mounted on a rotating shaft and providing a signal transmission path.

In various manufacturing industries, there are many situations in which electronic components need to be mounted on a rotating shaft or a component connected to a rotating shaft, such as a lighting fixture mounted on a fan blade, a monitor capable of rotating a viewing angle, and an illumination device or an advertising device capable of adjusting an illumination angle. The kanban or the like is required to provide a corresponding rotating shaft power supply device on the rotating shaft, so that the electronic component can still be electrically connected with the power source to obtain stable power supply or be coupled with other electronic devices while rotating the rotating shaft. Pass signals to each other.

Referring to FIG. 1, a conventional surveillance camera 9 includes a support frame 91, a lateral rotation bearing 92, and a camera 93. The lateral rotation bearing seat 92 is pivotally mounted on the support frame 91, and the camera 93 is fixed to the lateral rotation bearing seat 92. The support frame 91 includes an accommodating chamber 911 having a passage 921 that communicates with the accommodating chamber 911. The camera 93 can be electrically connected to a power source or a control unit via a wire 931. The wires 931 can extend through the receiving chamber 911 and the channel 921 respectively, so that the lateral rotating socket 92 is opposite to the control unit. When the support frame 91 is pivoted, the camera 93 can be rotated to change its shooting angle. An embodiment of the conventional surveillance camera 9 has been disclosed in the "Monitoring Camera Support" patent of the Republic of China Announcement No. M366006.

Although the wire 931 is simply used as a shaft power supply device, the wire 931 can Twisted in the channel 921 to maintain electrical connection with the camera 93, however, the wire 931 can be twisted to a limited extent, resulting in a limited angle of rotation of the camera 93, which will result in a smaller viewing angle of the camera 93. . Therefore, the viewing angle of the conventional surveillance camera 9 is usually less than 180 degrees, which makes the practicality greatly compromised.

On the other hand, the installation of lighting on vehicles has always been favored by young people who are eager to pursue the trend of fashion. Thanks to the continuous evolution of semiconductor manufacturing and materials science, the photovoltaic industry has flourished in recent years, prompting the development of lighting products on the market. Therefore, in addition to traditionally used incandescent lamps, halogen lamps, high-intensity discharge (HID) and cold cathode fluorescent lamps (CCFL), there are many more on the market. New choices such as light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs) have made it a trend to install lights for vehicles.

Among them, by installing the lighting on the rim of the vehicle, the lighting and the rim can be combined to form an excellent visual effect, so that the lighting products used for the vehicle rim are more popular with consumers. When the user attempts to install the lighting on the rim, since the lighting provided on the rim continues to rotate with the rim, it is impossible to supply the lighting with the conventional wire as in the conventional surveillance camera 9. For this reason, lighting fixtures mounted on rims typically use a brush structure (eg, a carbon brush) to draw power.

However, the rim of the vehicle must withstand high-speed rotation for a long time, and it faces the harsh operating environment such as high-temperature sunshine and rain and sewage erosion, which is very likely to cause wear or oxidation of the brush structure, resulting in poor contact. . Moreover, the brush structure is generally not easy to repair and replace. Once the contact is bad, the user often needs a lot of time and money to repair, making it extremely inconvenient to install the lighting on the rim.

In summary, when mounting electronic components on a rotating shaft or a component connected to a rotating shaft (for example, the above-mentioned rim), if a conventional wire is used to supply power to the electronic component or provide a signal transmission path, the rotation angle of the rotating shaft will be severely restricted; If the brush structure is used as a shaft power supply The power supply to the electronic component or the signal transmission path is provided to reduce the service life of the product due to the shortcoming of the brush structure being poor in durability.

In view of the above, there is a need to provide a further improved shaft power supply device for supplying power to the electronic components mounted on the rotating shaft and providing a signal transmission path, and solving the above problems, thereby effectively improving the convenience of mounting electronic components on the rotating shaft.

An object of the present invention is to provide a rotary shaft power supply device capable of supplying power to an electronic component mounted on a rotating shaft by using a bearing and a wire electrically connected to the bearing, and has the effect of improving the convenience of mounting the electronic component on the rotating shaft.

In order to achieve the foregoing objectives, the technical content of the present invention includes: a shaft power supply device comprising: a bearing having an inner ring body and an axial hole extending through the inner ring body, the inner ring body being electrically connected to the first a wire, and an outer ring body is coupled to the outer circumference of the inner ring body, an outer sleeve of the outer ring body is sleeved to cover the outer ring body, and the outer ring body is electrically connected to a second wire; The insulating layer is coupled to the inner ring of the bearing toward one side of the shaft hole; wherein the shaft hole is for receiving a rotating shaft, the rotating shaft is a rotating shaft, and the first wire is electrically connected to the rotating shaft One of the loads.

In the shaft power supply device of the present invention, the first wire penetrates the insulating layer, and the second wire penetrates the insulating sleeve.

In the shaft power supply device of the present invention, the insulating layer is sleeved on the inner side of the inner ring of the bearing for covering the inner ring body.

The shaft power supply device of the present invention further includes a bushing having a ring wall, the insulating layer covering the outer side of the ring wall, the ring wall passing through the shaft hole of the bearing and passing the insulation The layer forms a tight fit with the inner ring of the bearing.

In the shaft power supply device of the present invention, the sleeve has a through groove extending through the ring wall, and the through groove communicates with the shaft hole of the bearing for sleeved on a rotating shaft.

In the shaft power supply device of the present invention, the inner ring body and the outer ring body of the bearing are electrically connected to each other.

1‧‧‧ bearing

11‧‧‧ Inner ring

111‧‧‧First wire

12‧‧‧Axis hole

13‧‧‧Outer ring

131‧‧‧Insulation sleeve

132‧‧‧second wire

2‧‧‧Insulation

3‧‧‧ bushings

31‧‧‧Circle wall

32‧‧‧through slot

M‧‧ rims

M1‧‧·Axle

L‧‧‧load

L1‧‧‧ grounding wire

M’‧‧·Ring

M1’‧‧· axle

T‧‧‧ gearbox

F‧‧‧Rotary axis

F1‧‧‧ leaves

P‧‧‧Power supply

S‧‧‧ fixed shaft

S1‧‧‧ shell

V‧‧‧ camera

C‧‧‧Control unit

Fig. 1 is a schematic view showing the structure of a conventional surveillance camera.

Figure 2 is a schematic perspective view of a preferred embodiment of the present invention.

Figure 3 is a schematic view showing the assembly of the preferred embodiment of the present invention applied to the front wheel of a locomotive.

Fig. 4 is a cross-sectional structural view showing a preferred embodiment of the present invention applied to a front wheel of a locomotive.

Fig. 5 is an enlarged sectional view showing the structure of the front wheel of the locomotive according to a preferred embodiment of the present invention.

Figure 6 is an enlarged cross-sectional view showing another embodiment of the insulating layer of the preferred embodiment of the present invention.

Figure 7 is a cross-sectional structural view of a preferred embodiment of the present invention applied to a rear wheel of a locomotive.

Figure 8 is an enlarged view of a cross-sectional structure of a preferred embodiment of the present invention applied to a rear wheel of a locomotive.

Figure 9 is a cross-sectional structural view showing a preferred embodiment of the present invention applied to a fan.

Figure 10 is a schematic cross-sectional view of a preferred embodiment of the present invention applied to a surveillance camera.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to FIG. 2, a rotating shaft power supply device according to a preferred embodiment of the present invention includes a bearing 1 and an insulating layer 2 coupled to each other, and a bushing 3 is preferably disposed inside the insulating layer 2. The bearing 1 may be a conventional ball bearing, a roller bearing, or a sliding bearing. The invention is not limited thereto.

The bearing 1 has an inner ring body 11 and a shaft hole 12 extending through the inner ring body 11. The inner ring body 11 is electrically connected to a first wire 111. The shaft hole 12 can accommodate a rotating shaft (not shown). And the inner ring body 11 is further combined with an outer ring body 13 on the outer circumference, and the outer ring body 13 is preferably sleeved on the outer side. An insulating sleeve 131 is formed by an insulating material (such as rubber, plastic or insulating varnish) for covering the outer ring body 13, and the outer ring body 13 is electrically connected to a second The wire 132, the second wire 132 can communicate with the outside through the insulating sleeve 131. The inner ring body 11 and the outer ring body 13 are usually provided with a member for reducing frictional force such as balls, rollers or lubricating grease, so that the outer ring body 13 can smoothly rotate relative to the inner ring body 11. It should be noted that the inner ring body 11 and the outer ring body 13 are electrically connected to each other, and a metal ball, a metal roller or an electrically conductive metal is disposed between the inner ring body 11 and the outer ring body 13 . The lubricating grease can electrically connect the inner ring body 11 and the outer ring body 13 to each other. Since the operation principle of the bearing is a conventional technique, and the conductive bearing is also a conventional structure, those skilled in the art can easily understand the implementation and will not be described again.

The insulating layer 2 is similar to the insulating sleeve 131 and is also made of an insulating material. The insulating layer 2 is bonded to one side of the inner ring body 11 of the bearing 1 toward the shaft hole 12, and preferably the inner ring body 11 Forming a close contact, the first wire 131 can communicate with the outside through the insulating layer 2. The sleeve 3 has a ring wall 31 and a through slot 32 extending through the ring wall 31. The insulating layer 2 is preferably wrapped on the outer side of the ring wall 31. The ring wall 31 can pass through the shaft hole of the bearing 1. 12, the through slot 32 is communicated with the shaft hole 12 for receiving a rotating shaft (not shown), and the annular wall 31 is tightly fitted with the inner ring body 11 via the insulating layer 2.

The shaft power supply device of the preferred embodiment can be applied to various types of transmission shafts, axles, pivot shafts or other conventional shaft structures, and the invention is not limited thereto. Referring to Figures 3 and 4, a preferred embodiment of the present invention is applied to a rim of a vehicle of a vehicle, a locomotive, a bicycle, or an electric vehicle, for use in a rim of a front wheel of a locomotive. As an example of the embodiment on M, the rim M is pivotally disposed on an axle M1, and the axle M1 does not rotate with the rim M. Since the axle M1 is a fixed shaft, the sleeve 3 can be sleeved on the axle M1 by the through slot 32, and the annular wall 31 can be abutted against the axle M1, and the outer ring 13 of the bearing 1 can be abutted. Connected to the rim M. Thereby, the first wire 111 of the bearing 1 can be electrically connected to the power source of the locomotive (for example) For example, the battery is positive, and the second wire 132 of the bearing 1 can be electrically connected to a load L of the rim M, and the load L can be a conventional electronic component such as a lighting. The first wire 111 and the second wire 132 are electrically connected to the inner ring body 11 and the outer ring body 13 respectively, and the inner ring body 11 and the outer ring body 13 are electrically connected to each other. The power source can supply power to the load L via the first wire 111 and the second wire 132, respectively. It is noted that since the inner ring body 11 of the bearing 1 and the annular wall 31 of the bushing 3 have the insulating layer 2, the bearing 1 is well insulated from the wheel axle M1 and other components of the locomotive; The outer sleeve 13 of the bearing 1 and the rim M are provided with the insulating sleeve 131, so that the bearing 1 is well insulated from the rim M and other components of the locomotive. Accordingly, the insulating sleeve 131 and the insulating layer 2 can provide a good electrical protection effect of the bearing 1 to avoid a short circuit condition that may damage the load L.

Referring to FIG. 5, it is an enlarged view of the use situation of the rotating shaft power supply device according to the preferred embodiment of the present invention. The load L further has a grounding wire L1, and the grounding wire L1 can be directly electrically connected to the rim M. L遂 forms a conduction loop with the power supply of the locomotive, so that the load L can operate normally. However, the rim M can also be provided with the rotating shaft power supply device of the preferred embodiment on both sides, whereby the grounding wire L1 can be electrically connected to the power supply of the locomotive via another rotating shaft power supply device (not shown). In the negative electrode, although the above method is costly, the operation of the load L can be made more stable than directly connecting the ground line L1 to the rim M.

With the above structure, when the rim M is in a rotating state, the load L is bound to rotate with the rim M, and the outer ring body is abutted against the rim M by the outer ring 13 of the bearing 1 13 will also rotate with the rim M, so that the second wire 132 electrically connected to the outer ring body 13 can continue to supply power to the load L without entanglement or pulling; in addition, the rim The M system rotates relative to the axle M1, and the outer ring body 13 rotates synchronously with respect to the inner ring body 11 as the rim M rotates, so the inner ring body 11 is firmly coupled to the axle M1 without being The first wire 111 can maintain electrical connection to the locomotive by the rotation of the outer ring body 11 The power supply.

Referring to FIG. 6 , it is noted that the insulating layer 2 is used to form a good insulation between the inner ring body 11 of the bearing 1 and the annular wall 31 of the sleeve 3 , so that the insulating layer 2 can be Covering the outside of the ring wall 31 of the sleeve 3, the inner ring body 11 of the bearing 1 may be sleeved on the inner side of the inner ring body 11 (that is, the inner ring body 11 faces one side of the shaft hole 12) for coating. The inner ring body 11 , whereby the ring wall 31 can still form a tight fit with the inner ring body 11 via the insulating layer 2 , and the insulating layer 2 can provide electrical isolation between the bearing 1 and the sleeve 3 , and The first wire 111 may communicate with the outside through the insulating layer 2.

Please refer to FIGS. 7 and 8 for another embodiment of the use case of the rim of the vehicle of the preferred embodiment of the present invention for use in one of the rims M' of the rear wheel of the locomotive. For example, the rim M' is pivotally disposed on an axle M1', and the axle M1' is used to drive the rim M' to rotate. Although the axle M1' is a rotating shaft which is normally driven by a transmission case T to drive the rim M' to rotate, the spindle power supply device of the preferred embodiment of the present invention is equally applicable to the rim M'. In detail, the sleeve 3 can be sleeved on the axle M1 ′ of the rim M′ by the through groove 32 , and the ring wall 31 abuts the axle M1 ′, thereby when the axle M1 ′ rotates The ring wall 31, the insulating layer 2 and the inner ring body 11 of the bearing 1 are rotated together. According to the foregoing structure, the outer ring body 13 of the bearing 1 can be kept fixed, and the second wire 132 is electrically connected to the power source of the vehicle; relatively, the inner ring body 11 will follow the wheel axle M1' and the rim M' is rotated, so that the first wire 111 can be electrically connected to the load L of the rim M', so that the power source can supply the load L via the second wire 132 and the first wire 111, respectively.

It can be seen that when the shaft power supply device of the preferred embodiment is mounted on the rotating shaft, the load mounted on the rotating shaft can be supplied with power or a signal transmission path, wherein when the rotating shaft is a fixed shaft (that is, the component connected to the rotating shaft) When the rotation around the shaft is rotated, since the load mounted on the shaft will also rotate around the shaft, and the components such as the power source or the control unit electrically connected to the load are usually fixedly disposed, the outer ring is preferably electrically connected. The second wire 132 of the body 13 is electrically connected When the outer ring body 13 is rotated relative to the inner ring body 12, the load can rotate around the rotating shaft; conversely, when the rotating shaft is a rotating shaft (that is, the component connected to the rotating shaft is subjected to When the rotating shaft is rotated and rotated, since the load attached to the rotating shaft will also rotate with the rotating shaft, and the components such as the power source or the control unit electrically connected to the load are usually fixedly disposed, it is preferably electrically connected. The first wire 111 of the inner ring body 12 is electrically connected to the load attached to the rotating shaft, so that when the inner ring body 12 rotates relative to the outer ring body 13, the load can be rotated by the rotating shaft.

Please refer to FIG. 9 again, which is a use diagram of a rotating shaft power supply device applied to a fan according to a preferred embodiment of the present invention. For example, a blade F1 is coupled to the rotating shaft F. The blade F1 is also mounted with a load L. The load L may be a lighting or negative ion generator or the like. The electronic component of the blade F1, when the fan is in operation, the rotating shaft F is driven by the motor to drive the blade F1 to rotate. The difference from the foregoing embodiment is that the ground line of the load L cannot be directly electrically connected to the blade F1 because the blade F1 is not equivalent to the ground of the vehicle. In this embodiment, Two sets of rotating shaft power supply devices are disposed, and the first wires 111 of the bearing 1 of the two sets of rotating shaft power supply devices are respectively electrically connected to the two poles of the load L; oppositely, the second wires of the bearing 1 of the two sets of rotating shaft power supply devices The 132 series are electrically connected to the two electrodes of a power source P, respectively. Thereby, the power source P can supply the load L via the second wire 132 of the bearing 1 of the two sets of shaft power supply devices and the first wire 111 respectively.

Referring to FIG. 10 again, a preferred embodiment of the present invention is applied to a monitor camera using a hinge power supply device. For example, in the case of using one of the fixed axes S of the surveillance camera, a housing S1 is driven by the motor to rotate around the fixed axis S, and a camera V can be mounted on the housing S1. In this embodiment, the camera V is a load, and when the housing S1 is rotated around the fixed axis S, the shooting angle of the camera V can be simultaneously rotated. Since the camera V usually needs to be coupled to a power source P and a control unit C to operate normally, an array rotating shaft power supply device can be provided, and the second wires 132 of the bearing 1 of each of the rotating shaft power supply devices are respectively The first wire 111 of the bearing 1 of each of the shaft power supply devices is electrically connected to the power source P or the control unit C, respectively. Thereby, the power source P and the control unit C can supply the camera V via the second wire 132 of the bearing 1 of the array rotating shaft power supply device and the first wire 111 to establish a signal transmission path.

In summary, the shaft power supply device of the preferred embodiment of the present invention utilizes a bearing 1 and a wire electrically connected to the inner ring body 11 and the outer ring body 13 of the bearing 1, respectively, to supply power to a load mounted on a rotating shaft. Or provide a signal transmission path, which does have the effect of improving the convenience of mounting electronic components on the rotating shaft.

While the present invention has been disclosed in the above embodiments, it is not intended to limit the scope of the present invention. The scope of protection of the invention is therefore defined by the scope of the appended claims.

1‧‧‧ bearing

11‧‧‧ Inner ring

111‧‧‧First wire

12‧‧‧Axis hole

13‧‧‧Outer ring

131‧‧‧Insulation sleeve

132‧‧‧second wire

2‧‧‧Insulation

3‧‧‧ bushings

31‧‧‧Circle wall

32‧‧‧through slot

Claims (6)

A shaft power supply device includes: a bearing having an inner ring body and a shaft hole penetrating through the inner ring body, wherein the inner ring body is electrically connected to a first wire, and the inner ring body is coupled to an outer ring body at an outer periphery, An outer sleeve of the outer ring body is sleeved to cover the outer ring body, the outer ring body is electrically connected to a second wire, and an insulating layer is coupled to the inner ring of the bearing toward the shaft hole. One of the side holes; wherein the shaft hole is for receiving a rotating shaft, the rotating shaft is a rotating shaft, and the first wire is electrically connected to one of the rotating shaft loads. The shaft power supply device of claim 1, wherein the first wire penetrates the insulating layer, and the second wire penetrates the insulating sleeve. The shaft power supply device of claim 1, wherein the insulating layer is sleeved on an inner side of the inner ring of the bearing for covering the inner ring body. The shaft power supply device of claim 1, wherein a bushing is further provided, the bushing has a ring wall, the insulating layer is wrapped on the outer side of the ring wall, and the ring wall is disposed on the bearing A tight fit is formed in the shaft bore and through the insulating layer to the inner ring of the bearing. The shaft power supply device of claim 4, wherein the sleeve has a slot extending through the ring wall, the slot being in communication with the shaft hole of the bearing for sleeved on a shaft. The shaft power supply device of claim 1, 2, 3, 4 or 5, wherein the inner ring body and the outer ring body of the bearing are electrically connected to each other.