JP5544259B2 - Braking device for rotating body and rocking body - Google Patents

Description

  The present invention relates to a device for braking rotation of a rotating body, such as a wheel, and an apparatus for braking swinging of a swinging body that can swing within a predetermined range.

  As a brake for stopping a vehicle traveling at high speed, a braking device is attached to the wheel. That is, to brake the rotation of the wheel, the form of the braking device is mainly a drum brake and a disc brake, and in recent years, a disc brake that is superior in braking function is often mounted. That is, since the disc brake is braked by sandwiching the rotating plate, a large friction surface can be obtained and the rotating plate is not forced. By the way, there are many conventional techniques regarding a vehicle braking device.

A “vehicle braking device” according to Japanese Patent Laid-Open No. 5-112227 is a braking system that does not use fluid pressure such as hydraulic pressure or air pressure.
The “vehicle braking device” according to Japanese Patent Laid-Open No. 2001-294143 is configured to shorten the braking distance.
The “electric brake device” according to Japanese Patent Laid-Open No. 2001-173690 improves force transmission efficiency when a brake pad is pressed against a member to be braked via a force transmission conversion mechanism that converts rotational force into linear force. This is an electric disc brake that can be realized.

As described above, various braking devices for braking a rotating body such as a vehicle wheel are known. However, the braking device for a rotating body targeted by the present invention is not intended for vehicle wheel brakes, and can be used for simple human vehicles such as strollers and silver cars. Of course, as long as the rotating body is rotating, it is not limited to wheels.
Japanese Patent Application Laid-Open No. 2007-160994 discloses a "brake rod operating device in a silver car or the like" that applies braking to a rear wheel by gripping a hand brake of a silver car, and applies a stopper member to the hand brake so that the rear part is parked. It is designed to prevent rolling of the wheel.

  Japanese Patent Application Laid-Open No. 2002-21409 “Brake device for wheelbarrow” requires that the brake lever is continuously pulled to perform brake operation when going down a long hill with a silver car. In such a long downhill, it is very difficult for a person to drive slowly while continuously operating the brake on the silver car without continuing to pull the brake lever. A silver car can be stopped by a brake device in the middle of a slope.

  The “automatic braking device for wheels in strollers” according to Japanese Patent Laid-Open No. 9-39800 was made to improve safety during traveling in conventional strollers or silver cars (old car), etc. This is an automatic braking device for wheels in a stroller or the like in which the braking device automatically operates with respect to the above speed.

"Vehicle braking device" according to Japanese Patent Laid-Open No. 5-112227 “Vehicle Braking Device” according to Japanese Patent Laid-Open No. 2001-294143 “Electric brake device” according to Japanese Patent Application Laid-Open No. 2001-173690 “Operating device for brake rod in silver car or the like” according to Japanese Patent Application Laid-Open No. 2007-160994 "Brake device for handcart" according to Japanese Patent Laid-Open No. 2002-221409 "Automatic braking device for wheels in baby strollers" according to JP-A-9-39800

  As described above, various braking devices for braking the rotation of the wheels are known. The present invention is not limited to braking of a wheel, but provides a braking device for a rotating body that can brake and stop the rotational motion of a general rotating body, not limited to a wheel, with a very simple structure. On the other hand, a brake device for a rocking body that can brake not only a rotating body but also a rocking body and clamp it at a predetermined angle is provided.

  The braking device for a rotating body according to the present invention uses a chain bent in a zigzag manner, and the chain is attached to a ring-shaped rib provided on the rotating body. In the chain, a plurality of links are connected by pins and bendable through the pins. The link is disposed at an intermediate position of the pin, and both ends of the pin extend to both sides of the link. A pin extending from the link engages the rib. It is also possible to attach a roller to the pin and engage this roller with a rib.

  By the way, the rotating body is composed of a combination of a main body and a lid, and the rib is formed coaxially with the main body and the lid, and a space for fitting a link is provided between both ribs. The base side of the chain is fixed to the shaft side of the rotating body, and the tip is a free free end. Therefore, if the rib rotates together with the rotating body, the pin can engage with the outer peripheral surface and inner peripheral surface of the rib to brake.

  The brake device is provided with an unlocking portion that operates so that the chain contracts against the free end that is the tip of the chain, and the pins that extend to both sides of the link by the contraction of the chain are the outer peripheral surface and inner peripheral surface of the rib. The clamp is released away from the surface. That is, when the chain bends in a zigzag manner, the pins extending to both sides centering on a plurality of links will alternately contact the outer peripheral surface and the inner peripheral surface of the rib. And the friction with the inner peripheral surface moves as the rib rotates, and as a result, the chain is stretched.

  When the chain is stretched, the distance between the pins arranged on the outer peripheral surface side and the inner peripheral surface side is reduced to increase the contact surface pressure, and a large frictional force is generated between the outer peripheral surface and the inner peripheral surface by each pin. As a result, the rotation of the rib is braked, and the rotating body is clamped, and the rotation stops. However, if the tip which is the free end of the chain is pressed by the clamp release member and compressed to the fixed end side, the clamp is released immediately. On the other hand, the rotary braking device of the present invention is applied as a swing braking device for a swinging body, and can brake and clamp the swinging body swinging within a predetermined range at a certain angle.

  The present invention is such that each pin of a chain bent in a zigzag shape is engaged with a rib provided concentrically with the central axis of a rotating body or a swinging body, from the fixed end side of the chain to the free end side. It is possible to brake the rotation or swing of the motor. Then, when releasing the clamp and allowing rotation or swinging, the tip of the chain may be pressed and contracted to the fixed end side, and the clamp release operation is very simple.

  The structure of the braking device is as simple as engaging a pin of a chain formed by connecting a plurality of links with a rib, and the magnitude of the clamping force can be adjusted by increasing or decreasing the number of links. I can do it. And it becomes possible to brake the rotation in both directions by assembling the two chains in opposite directions with respect to the ribs.

The Example which shows the braking device of a wheel. The example of the chain which comprises a braking device. Detailed view of the braking device of the present invention with a chain attached to a rib. Detailed view of the braking device of the present invention with a chain attached to a rib. Another example showing a chain. Another embodiment showing a braking device for a wheel.

  FIG. 1 is a schematic view showing a braking device for a rotating body according to the present invention. The rotating body shown in FIG. 1 represents a wheel 1, but an axle 2 is provided at the center, and the wheel 1 is rotatably attached to the axle 2 via a bearing 3. Here, the bearing 3 may be a rolling bearing or a sliding bearing, but a rubber tire is mounted on the outer periphery of the wheel. Or, if the vehicle is an infant, a plastic tire may be mounted.

  By the way, a braking device is attached to the wheel 1, and the rotating wheel 1 is braked to stop its rotation. In the case of a general vehicle, as is apparent from the above-mentioned prior art, various braking devices are attached to realize safe driving of the vehicle. However, in a vehicle for infants, a silver car, a baby carriage, etc., braking is performed. In many cases, a braking device that is sufficiently functional and easy to operate is not installed.

  A rib 4 is provided concentrically with the bearing 3, and the rib 4 is a ring body having a constant thickness. The rib 4 can rotate around the bearing 3. In the rib 4 shown in the figure, an outer rib 4a and an inner rib 4b extend on the circumference at regular intervals. The rib 4 incorporates a chain 5 bent in a zigzag shape, and the rotation of the rib 4 can be braked by the chain 5. In other words, the chain 5 is formed by a plurality of links 6, 6... Being flexibly connected by pins 7, 7. The peripheral surface 9 is engaged.

  The base side of the chain 5 is connected to a connecting link 11 attached to a fixed end 10 provided on the axle 2, and the tip 12 is a free free end. Therefore, if the wheel 1 rotates counterclockwise, the rotation is braked by the chain 5 and stopped. However, clockwise rotation is allowed. Further, a clamp release arm 13 is attached to the axle 2 of the wheel 1, and the clamp release arm 13 extends from a shaft 14 provided at the center. If the shaft 14 is rotated, the clamp release arm 13 swings and the chain 5 It hits the tip 12 of.

  When the pins 7, 7... (Or the rollers attached to the pins 7) are engaged with the rib 4 and are in a braking state, when the clamp release arm 13 hits the tip 12 and the chain 5 is compressed, The pins 7 are separated from the outer peripheral surface 8 and the inner peripheral surface 9 of the rib 4. And the clamp state is cancelled | released and the wheel 1 can rotate.

  FIG. 2 shows a specific example of the chain 5, in which outer links 6a, 6a... And inner links 6b, 6b. The outer links 6a and 6a are connected in a state where the inner link 6b is sandwiched between them, and each outer link 6a and the inner link 6b can be bent, resulting in a zigzag state as shown in FIG. The pins 7, 7... Extend to both sides of the outer links 6 a, 6 a so that they can engage with the ribs 4. Of course, the number of links constituting the chain 5 is not limited to the case shown in FIG. For example, one inner link 6b can be connected between the outer links 6a and 6a.

  3 and 4 show detailed views when the chain 5 is attached to the rib 4. The rib 4 is composed of an outer rib 4a and an inner rib 4b. As shown in the figure, the pins 7, 7,... Connecting the outer links 6a, 6a. .. is in contact with the outer peripheral surface 8 of the outer rib 4a and the inner peripheral surface 9 of the inner rib 4b. When the chain 5 is bent zigzag, the pins 7, 7,... Are arranged in two rows at a predetermined interval, and the rib 4 is fitted in this interval. The pins 7, 7... Extend to both sides of the outer links 6a, 6a... But can engage with the ribs 4 provided on both sides.

  The wheel 2 shown in FIG. 1 shows a main body on one side, and a lid having the same rib 4 is attached to the main body, and pins 7 and 7 extending to both sides of the outer links 6a, 6a. Are engaged with the ribs 4, 4... On the main body side and the ribs 4, 4. For this purpose, the lid is attached concentrically with the axle 2 (not necessarily fixed), and the central axes of both ribs 4 and 4 are coincident.

  FIG. 5 shows another specific example of the chain 5. 2 is the same as the chain shown in FIG. 2, and the outer links 6a, 6a... And the inner links 6b, 6b. The outer links 6a and 6a are connected with the inner link 6b sandwiched therebetween. And in the case of the chain 5 shown to the same figure, roller 15a, 15b, 15a, 15b ... is attached to pin 7,7 .... Therefore, the rollers 15a, 15a..., 15b, 15b. Here, the outer diameter of the roller 15a is larger than that of the roller 15b, the roller 15a having a larger outer diameter is engaged with the outer peripheral surface 8, and the roller 15b having a smaller outer diameter is engaged with the inner peripheral surface 9. I can do it.

  The specific sizes (outer diameters) of the rollers 15a and 15b are not limited, but the dimensions are such that the chain 5 can be bent in a zigzag shape and contact the outer peripheral surface 8 and the inner peripheral surface 9 of the rib 4. . Therefore, since the peripheral length of the inner peripheral surface 9 is shorter than the peripheral length of the outer peripheral surface 8, the roller 15b in contact with the inner peripheral surface 9 has a smaller diameter than the roller 15a in contact with the outer peripheral surface 8 as described above.

  By the way, the clamp release arm 13 of the wheel 1 shown in FIG. 1 can swing by operating the shaft 14 to brake the rotation of the wheel 1 or allow the rotation. Therefore, in the case of a silver car, a handcart or a baby carriage, the handle and the clamp release arm 13 can be interlocked. For example, when pushing the handle forward, the shaft 14 rotates clockwise, the clamp release arm 13 hits the tip 12 of the chain 5, the clamp is released, and the wheel 1 can freely rotate.

  However, if the hand is released from the handle, the shaft 14 rotates counterclockwise and the clamp release arm 13 moves away from the tip 12 of the chain 5, and the wheel 1 is braked by the chain 5. For this purpose, the handle is mounted so that it can swing back and forth, and when moving forward, the clamp is released when it is tilted forward by a pressing force, and when it is released, it is energized. It can be clamped at the same time as it is tilted backward by the spring force.

  FIG. 6 shows another embodiment of the braking device for the wheel 1. This braking device uses chains 5 a and 5 b bent in two zigzags and is attached to the rib 4. The left chain 5a can brake counterclockwise wheel rotation, and the right chain 5b can brake clockwise wheel rotation. Further, a clamp release arm 13a and a clamp release arm 13b are attached to the shaft 14, and the clamp of the wheel 1 can be released.

  Each of the clamp release arms 13a and 13b is attached to the shaft 14 so that each of them can swing independently. Therefore, if both the clamp release arms 13a and 13b are separated from the ends 12a and 12b of both the chains 5a and 5b, the wheel 1 is clamped in any direction and cannot be rotated. On the contrary, if both the clamp release arms 13a and 13b are pressed against the ends 12a and 12b of the chains 5a and 5b to be compressed, the wheel 1 can be rotated in any direction.

Here, the tip of the chain 5 and the clamp release arm 13 may be connected via a weak coil spring. When the coil spring is connected, the clamp release arm 13 moves away from the tip 12 of the chain 5 and at the same time, the tip 12 is pulled by the coil spring and the rollers 15a, 15a,. .. Engages with the rib 4 and is immediately braked without slipping.
The rollers 15a, 15a ..., 15b, 15b ... attached to the pins 7, 7 ... of the chain 5 having a zigzag shape are always engaged with the ribs 4 In other words, the spring force is urged in the direction in which the zigzag chain 5 is stretched so that the clamp release arm 13 is engaged except when it comes into contact with the tip and compresses.

1 wheel 2 axle 3 bearing 4 rib 5 chain 6 link 7 pin 8 outer peripheral surface 9 inner peripheral surface
10 Fixed end
11 Link
12 Tip
13 Clamp release arm
14 axes
15 Laura

Claims (10)

In a device for braking a rotating body that rotates in one direction, a rib having a predetermined radius is provided around the rotation axis, and a chain in which a plurality of links are bent and connected in a zigzag manner through pins is attached to the rib. The chain pins extend from each link and are alternately brought into contact with the outer peripheral surface and inner peripheral surface of the rib, and the base side of the chain is connected to a fixed end on the bearing side via a connecting link, and the tip is a free end. And a braking device for a rotating body, wherein the clamp release arm can be brought into contact with the tip of the chain. In a device for braking a rotating body that rotates in both directions, a rib having a predetermined radius is provided around a rotation axis, and two ribs are formed by bending and connecting a plurality of links in a zigzag manner via pins. The chain pins are attached in opposite directions, the pins of the chain extend from each link and alternately contact the outer peripheral surface and the inner peripheral surface of the rib, and the base side of both chains is connected to the bearing side via a connecting link A rotating device braking device characterized in that it is connected to a fixed end of the rotating body, the tip is a free end, and the clamp release arm is able to contact the tip of the chain. The braking device for a rotating body according to claim 1, wherein a roller is attached to the pin of the chain. 4. The braking device for a rotating body according to claim 3, wherein the outer diameter of the roller attached to the pin is increased on the outer peripheral surface side of the rib and decreased on the inner peripheral surface side. The rotating body is composed of a main body and a lid attached concentrically to the main body, and a space is provided between the main body and the rib provided on the lid, and a link of the chain is disposed in this space. The braking device for a rotating body according to claim 1, 2, 3, or 4, wherein a pin extending from both sides or a roller attached to the pin is engaged with the main body rib and the lid rib. In an apparatus for braking and clamping at a predetermined angle, a rocking body that swings in one direction, a rib having a predetermined radius is provided around the rocking shaft, and a plurality of links are connected to the rib via pins. A chain that is bent and connected in a zigzag manner is attached, and the pins of the chain extend from each link to alternately contact the outer peripheral surface and the inner peripheral surface of the rib, and the base side of the chain is connected to the fixed end on the bearing side via the connecting link. And a free end at the tip, and a clamp release arm that can contact the tip of the chain. In a device for braking a swinging body swinging in both directions, a rib having a predetermined radius is provided around the swinging shaft, and a plurality of links are bent and connected in a zigzag manner via pins. The chain is mounted in pairs in opposite directions, and the pins of the chain extend from each link to alternately contact the outer peripheral surface and the inner peripheral surface of the rib, and the base side of both chains is connected via a connecting link A rocking device braking device characterized in that it is connected to a fixed end on the bearing side, the tip is a free end, and the clamp release arm can contact the tip of the chain. The rocking device braking device according to claim 6 or 7, wherein a roller is attached to the pin of the chain. 9. The braking device for a rocking body according to claim 8, wherein the outer diameter of the roller attached to the pin is increased on the outer peripheral surface side of the rib and decreased on the inner peripheral surface side. The oscillating body is composed of a main body and a lid attached concentrically to the main body. A space is provided between the main body and the rib provided on the lid, and a link of the chain is disposed in this space. The rocking device braking device according to claim 6, 7, 8, or 9, wherein a pin extending from both sides or a roller attached to the pin is engaged with the main body rib and the lid rib.

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