JP3197416U - Caster structure - Google Patents

Abstract

The present invention provides a caster structure that is convenient and safe to use. The caster structure includes a fixed base 20, a stopper piece 30, a braking piece 40, and a tread plate 50. Among them, a wheel frame 21 is pivoted in the axial direction at the bottom of the fixed base 20, a wheel body 23 is installed on the wheel frame 21, and a chain ring 26 is installed on the wheel frame 21. A slight concave tub 261 is provided around the peripheral edge of the chain ring 26. The stopper piece 30 is installed below the chain ring 26 in the wheel frame 21, and a fitting portion 32 is formed on the stopper piece 30. The braking piece 40 is installed outside the wheel frame 21, and a horizontal support 42 is installed at the uppermost end of the braking piece 40. The horizontal support portion 42 corresponds to the stopper piece 30. The tread plate 50 is installed outside the wheel frame 21, and the brake piece 40 is rotated and driven by pressing the stopper piece 30 at the same time as it is stepped on. Is inserted into the concave tank 261, and the wheel frame 21 is engaged and positioned. [Selection] Figure 2

Description

  The present invention relates to a caster structure, and more particularly to a caster structure that is convenient and safe to use a kind of side-side caster.

  As shown in FIG. 1, a known side-end caster 10 includes a fixed base 11, and the fixed base 11 is pivotally provided at the bottom of a carriage, a machine base, a shelf, etc. A wheel frame 12 is pivoted on the bottom side of the fixed base 11, and the wheel frame 12 pivots a rotating wheel body 13. One side of the wheel frame 12 pivots a tread plate 14, and the tread plate 14 forms a convex portion 141. A stopper piece 15 is pivoted on the wheel frame 12, and the wheel body 13 is installed on the stopper piece 15. One side of the stopper piece 15 extends below the convex portion 141 of the tread plate 14 to form the support portion 151. When the tread plate 14 is stepped on and rotated, the convex portion 141 of the tread plate 14 presses the support portion 151 of the stopper piece 15 according to the rotation and moves the stopper piece 15 downward, and the stopper piece 15 is moved to the wheel body 13. The wheel stop effect of the side-side caster 10 is achieved by stopping the rotation. On the other hand, when releasing the brake, if the stepping plate 14 is stepped on and the convex portion 141 of the treading plate 14 is restored and rotated, the stopper piece 15 will not be pressed, and the stopper piece 15 will be restored upward to release the pressing of the wheel body 13. The wheel body 13 comes to rotate.

  In the above-mentioned known side-side caster 10, when the tread plate 14 is stepped, the stopper piece 15 is driven to press the wheel body 13 to stop the vehicle, and further stop the movement of the carriage, the machine base, the shelf, etc.

Japanese Utility Model Publication No. 6-10002

  The problem to be solved is that the fixed base 10 and the wheel frame 12 have a non-directional design in which the caster 10 and the wheel frame 12 are rotatable in order to improve the convenience in using the caster. There is only the rotation of the body 13 and the brake stop control. Therefore, since the wheel body 13 stops and the fixed base 11 cannot stop rotating at the same time, the carriage, the machine base, and the shelf on the fixed base 11 easily rotate, and the article on the top drops. If this happens, there will be accidents that change direction, or even tilt or fall, making it inconvenient and dangerous to use.

  The present invention includes a fixed base, a stopper piece, a braking piece and a tread. Among them, a wheel frame is pivoted in the axial direction at the bottom of the fixed base, a wheel body is installed on the wheel frame, and a chain ring is installed on the wheel frame. At the peripheral edge of the chain ring, a few concave tanks are installed. The stopper piece is installed below the chain ring in the wheel frame, and a fitting portion is formed on the stopper piece. The braking piece is installed outside the wheel frame, and a horizontal support is installed at the uppermost end of the braking piece. The horizontal support corresponds to the stopper piece. The tread is installed on the outside of the wheel frame, and when it is stepped on, the brake piece is driven to rotate and at the same time the stopper piece is pressed to rotate, and the fitting part is turned upward to fit into the recessed tank at the peripheral edge of the chainring. The most important feature is that it is positioned by engaging the wheel frame.

  The caster structure of the present invention has the advantage of being more convenient and safer to use.

It is a three-dimensional instruction diagram of a known caster. It is a three-dimensional exploded view of the present invention. It is a three-dimensional instruction | indication figure of the stopper piece of this invention. It is a three-dimensional assembly drawing of the present invention. It is an assembly sectional view of the present invention. FIG. 4 is a side view showing the stopper piece of the present invention that has not yet stopped the wheel body and the chain ring. The stopper piece of the present invention is a three-dimensional instruction diagram that has not yet stopped the wheel body and the chain ring. The stopper piece of the present invention stops the wheel body, and the fitting portion thereof is a side view instruction view inserted into a concave tank installed in the chain ring. The stopper piece of this invention stops a wheel body, and the fitting part is the solid instruction | indication figure inserted in the concave tank installed in the chain ring.

  An object of the present invention is to provide a side-stop caster that is convenient and safe to use.

  In order to achieve the above object, the caster of the present invention includes a fixed base, a stopper piece, a braking piece and a tread. Of which

  The fixed base is pivotally installed with a wheel frame at the bottom. The wheel frame rotates 360 ° at the bottom of the fixed base, and the wheel body is pivoted by a pivot shaft on the lower side of the wheel frame. A shaft hole and a brake hole are provided on the upper side of the wheel frame. A chain ring is pivotally provided on the bottom surface of the fixed base, and a slight concave tank is provided around the peripheral edge of the chain ring.

  The stopper piece is provided with a pivot hole, and the stopper piece is inserted into the pivot hole to pivot on the shaft hole on the wheel frame, and the stopper piece is positioned below the chain ring inside the wheel frame. The stopper pieces rotate together according to the rotation axis. The stopper piece forms at least a fitting portion. The stopper piece forms a pressing spring portion, and the end of the pressing spring portion presses the bottom surface of the fixed base. The stopper piece forms a brake stage on another side opposite to the fitting portion.

  The brake piece is provided with a perforation, and a pivot shaft is inserted into the perforation to be coupled to the outside of the wheel frame, and a horizontal support is formed at the uppermost end of the brake piece. The horizontal support portion is installed in the brake hole of the wheel frame to hold the stopper piece, and the bottom end of the brake piece is bent to form a pressure receiving step.

  The tread plate is provided with a shaft hole, and a pivot shaft is inserted into the shaft hole and coupled outside the brake piece. The step board forms a foot step portion and an uppermost convex portion, and the uppermost convex portion corresponds to the pressure receiving step of the braking piece.

  A side-end caster is provided by the above-described structure, and a caster structure that is convenient and safe to use is provided.

  The technical means for achieving the object of the present invention will be described in detail with reference to examples shown in FIGS.

  In order to avoid the content of the diagram being too complicated, the casters shown in FIGS. 6 to 9 are omitted with respect to the contents related to the present invention and other unrelated mechanisms.

  As shown in FIG. 2, the caster in the embodiment includes a fixed base 20, a stopper piece 30, a braking piece 40 and a tread plate 50. Of which

  A wheel frame 21 is pivoted on the bottom of the fixed base 20 (see FIGS. 3, 4 and 5). The wheel frame 21 rotates 360 ° at the bottom of the fixed base 21, and a wheel body 23 is pivoted by a pivot shaft 22 below the wheel frame 21, and the wheel body 23 rotates by a pivot shaft 22. . Further, a shaft hole 24 and a brake hole 25 are formed on the upper side of the wheel frame 21, a chain ring 26 is pivoted on the bottom surface of the fixed base 20, and a slight concave tub 261 is provided around the periphery of the chain ring 26. To do.

  The stopper piece 30 (see FIGS. 4 and 5) is provided with a pivot hole 31 thereon. The stopper piece 30 has a rotary shaft 60 inserted into the pivot hole 31, pivoted on the shaft hole 24 on the wheel frame 21, and the stopper piece 30 is coupled to the lower side facing the chain ring 26 inside the wheel frame 21. Further, the stopper piece 30 rotates according to the rotation shaft 60. The stopper piece 30 is provided with at least one fitting portion 32, and when the stopper piece 30 rotates, the fitting portion 32 is fitted into the recessed tank 261 of the chain ring 26 to be fitted and positioned, and the wheel frame 21. Simultaneously limit the to prevent rotation. The stopper piece 30 is provided with a pressing spring portion 33, and the end of the pressing spring portion 33 is set on the bottom surface of the fixed base 20. The brake stage 34 is formed in another side law opposite to the fitting portion 32 of the stopper piece 30.

  The brake piece 40 (see FIGS. 4 and 5) is provided with a perforation 41, which inserts the pivot shaft 22 into the perforation 41 and couples outside the wheel frame 21. A horizontal support portion 42 is installed at the uppermost end of the brake piece 40, and the horizontal support portion 42 is inserted into the brake hole 25 of the wheel frame 21 and pressed on the stopper piece 30. The step 43 is curvedly installed.

  The tread board 50 (see FIGS. 4 and 5) is provided with a shaft hole 51, and the pivot shaft 22 is inserted into the shaft hole 51 and joined outside the brake piece 40. The foot board 50 is formed with a foot part 52 and an uppermost convex part 53. The uppermost convex part 53 corresponds to the pressure receiving step 43 of the braking piece 40, and when the foot board 50 is rotated, the uppermost convex part 53 is The pressure receiving stage 43 of the brake piece 40 is supported, and the brake piece 40 moves downward.

  6 and 7, when the caster is moved, the brake piece 40 does not descend and the stopper piece 30 is not moved and pressed by the above-described structure, so that there is no gap between the stopper piece 30 and the wheel body 23. Is formed. Therefore, the wheel body 23 rotates freely, and the caster moves freely. Further, since the fitting portion 32 of the stopper piece 30 is not fitted in the concave tank 261 of the chain ring 26, the wheel frame 21 of the caster rotates freely. On the other hand, when the user brakes and stops the caster, as shown in FIGS. 8 and 9, the user steps on the foot 52 of the tread 50 and rotates the tread 50, so that the uppermost convex portion 53 of the tread 50 has the braking piece 40. When the brake piece 40 receives pressure and moves downward, the support part 42 of the brake piece 40 presses the stopper piece 30 downward, and the brake stage of the use stopper piece 30 is rotated. The wheel body 23 is supported by 34, and the wheel body 23 stops rotating. At the same time, based on the lever principle, when the brake stage 34 of the stopper piece 30 moves downward, the fitting portion 32 installed on one side of the brake piece 34 of the stopper piece 30 rotates upward to form the concave tank 261 of the chain ring 26. The chain ring 26 stops and does not rotate in response to the stop of the fitting portion 32, the wheel frame 21 also does not rotate at the same time, and the caster can be braked and stopped rotating at the same time. When releasing the stop state of the caster, if the stepping plate 50 is stepped in the opposite direction and the rotation is reversed (see FIGS. 6 and 7), the uppermost convex portion 53 of the stepping plate 50 does not support the pressure receiving step 43 of the braking piece 40, The stopper piece 30 is pushed by the pressing spring portion 33 to rotate and return the stopper piece 30, the fitting portion 32 is disengaged from the concave tank 261 of the chain ring 26, and the brake stage 34 does not support the wheel body 23. Then, the brake piece 40 is moved upward, the support portion 42 is restored and the stopper piece 30 is not supported, the wheel body 23 of the caster rotates and moves, and the wheel frame 21 rotates freely.

  As can be seen from the above, the present invention has the following advantages.

  First, a chain ring 26 is installed at the bottom of the fixed base 20, and a concave tank 261 is provided around the peripheral edge of the chain ring 26. In addition to supporting the wheel body 23 by the stopper piece 30 by stepping on the tread 50 and achieving a braking effect, the fitting portion 32 of the stopper piece 30 is fitted into a recessed tank 261 installed in the chain ring 26 to provide a wheel. The frame 21 engages and is fixed and does not rotate, the stationary base 20 is not rotated, and further, the carriage, the machine base, the shelf, etc. installed on the stationary base 20 are prevented from rotating.

  Secondly, by installing a small concave tub 261 around the peripheral edge of the chain ring 26, not only the fixing base 20 and the wheel frame 21 can be rotated at any angle, but also the fitting portion 32 of the stopper piece 30. Is inserted into the concave tank 261 to stop the movement of the wheel frame 21 and stop the wheel frame 21 from rotating at a specific angle. Therefore, it has a high degree of convenience and safety.

  Third, the pressing spring portion 33 is installed on the stopper piece 30. The end of the pressing spring portion 33 presses the bottom surface of the fixed base 20. When the brake state of the caster is released and the treadle 50 is stepped in the opposite direction, the stopper piece 30 is quickly and smoothly rotated by the reaction force of the pressing spring portion 33 of the stopper piece 30, and the brake state is immediately released. Convenience of use and operation is improved.

  As can be seen from the above, the present invention provides a side caster, which makes the operation more convenient and safe. Since the present invention is excellent in inventive step and its structure is unseen, it meets the requirements for a utility model registration application.

  As described above, the present invention provides a working example for purposes of illustration. Accordingly, it is not intended to limit the scope of the present invention, and all changes and modifications based on the spirit of the present invention by those skilled in the art are intended to be included within the scope of the present invention.

<Known>
DESCRIPTION OF SYMBOLS 10 Caster 11 Fixing stand 12 Wheel frame 13 Wheel body 14 Tread plate 141 Convex part 15 Stopper piece <Invention>
20 fixed base 21 wheel frame 22 pivot shaft 23 wheel body 24 shaft hole 25 brake hole 26 chain ring 261 concave tank 30 stopper piece 31 pivot hole 32 fitting part 33 pressing spring part 34 brake stage 40 brake piece 41 perforation 42 horizontal Support portion 43 Pressure receiving stage 50 Tread plate 51 Shaft hole 52 Foot step portion 53 Topmost convex portion 60 Rotating shaft

Claims (1)

A caster structure including a fixed base, a stopper piece, a braking piece and a tread,
The fixed base has a wheel frame pivoted at the bottom thereof, and the wheel frame can be rotated by 360 degrees at the bottom, and the wheel frame is pivoted by a pivot shaft on the lower side of the wheel frame, A shaft hole and a brake hole are installed on the wheel frame, and a chain ring is pivotally installed on the bottom surface of the fixed base, and a concave tub is provided on the peripheral edge of the chain ring.
The stopper piece is provided with a pivot hole, and a rotation shaft is inserted into the pivot hole to pivot on the shaft hole on the wheel frame, and is coupled to the lower side of the wheel frame facing the chain ring. The stopper piece is formed with at least one fitting portion and a pressing spring portion, and the end of the pressing spring portion pushes the bottom surface of the fixing base, A brake stage is formed on the other side facing the fitting portion,
The brake piece is provided with a perforation, the pivot shaft is inserted into the perforation and coupled outside the wheel frame, and a horizontal support is installed at the uppermost end, and the horizontal support is connected to the wheel frame. Extending in the brake hole and holding it with the stopper piece, bending the bottom end of the brake piece to form a pressure receiving step,
The tread plate is provided with a shaft hole, the pivot shaft is inserted into the shaft hole and coupled outside the braking piece, and the tread plate is provided with a foot step portion and a top convex portion, and the top convex portion Corresponds to the pressure-receiving stage of the brake piece.

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