KR20220085970A - Safety apparatus - Google Patents

Abstract

A safety device according to an embodiment includes a cutting tool including a cutting body and a cutting blade formed on the cutting body; a support structure supporting the cutting body; and a safety mechanism installed on the support structure, wherein the safety mechanism includes: a sensor installed on the support structure adjacent to the cutting blade and configured to detect a user's contact; a shaft configured to move between a first position that is retracted when user contact is not detected and a second position that is deployed when user contact is detected; and a first configuration spaced from the shaft and engaging the cutting body when the shaft is in the first position and a second engaging and disengaged from the cutting body when the shaft is in the second position. and a trigger configured to take a form.

Description

safety device {SAFETY APPARATUS}

Hereinafter, embodiments relate to safety devices.

When using a saw, which is one of the cutting tools, many technologies for safety are being developed. However, most of them are just technologies for preventing accidents in advance using peripheral devices that exist separately from the saw, and technologies that can immediately respond to accidents that occur during work are limited. For example, Public Utility Model Publication No. 1998-035660 discloses a circular saw safety cover.

An object according to an embodiment is to provide a safety device that immediately blocks a risk that may occur while a user uses a cutting tool.

A safety device according to an embodiment includes a cutting tool including a cutting body and a cutting blade formed on the cutting body; a support structure supporting the cutting body; and a safety mechanism installed on the support structure, wherein the safety mechanism includes: a sensor installed on the support structure adjacent to the cutting blade and configured to detect a user's contact; a shaft configured to move between a first position that is retracted when user contact is not detected and a second position that is deployed when user contact is detected; and a first configuration spaced from the shaft and engaging the cutting body when the shaft is in the first position and a second engaging and disengaged from the cutting body when the shaft is in the second position. and a trigger configured to take a form.

The trigger may include a pivot installed on the support structure and a rotating body rotatably installed on the pivot.

The rotating body includes a first wing extending from the pivot in a first direction and configured to meet the shaft and a second wing extending from the pivot in a second direction different from the first direction and configured to support the cutting body may include

The rotating body may further include a base protruding from the second wing and configured to support the cutting body when the trigger assumes the first shape.

The rotating body may further include a guide formed to be inclined from the base and guiding the cutting body to the base while the trigger takes the first shape after taking the second shape.

The safety device according to an embodiment may immediately block a risk that may occur while a user uses a cutting tool.

Effects of the safety device according to an embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view of a safety device according to an embodiment;
2 is a perspective view of an internal structure of a safety device according to an embodiment;
3 is a view showing a first state of the safety device according to an embodiment.
4 is a view illustrating a change from a first state to a second state of the safety device according to an embodiment.
5 is a view illustrating a change from a second state to a first state of the safety device according to an embodiment.
6 is a diagram illustrating a connection relationship between a cutting mechanism and a sensor of a safety device according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, a description described in one embodiment may be applied to another embodiment, and a detailed description in the overlapping range will be omitted.

1 to 6 , the safety device 10 according to an embodiment prevents a situation in which the cutting tool 110 may pose a risk to the user's body while the user uses the cutting tool 110 in advance. can be prevented

The safety device 10 may include a cutting tool 110 , a support structure 120 , a safety mechanism 130 , a lift 140 , and an actuator 150 .

The cutting tool 110 may cut a work piece. For example, the work piece may include a plate-shaped substrate formed of a material such as iron or wood. The cutting tool 110 may include a cutting body 111 , a plurality of cutting blades 112 , and a moving body 113 . The cutting body 111 has a rotation axis and may rotate about the rotation axis. The cutting body 111 may have a circular plate shape. The plurality of cutting blades 112 may be formed to be spaced apart from each other along the edge of the cutting body 111 . The plurality of cutting blades 112 may have a sharpness suitable for cutting a workpiece. The movable body 113 is connected to the cutting body 111 and can move in a vertical direction. The moving body 113 may include a slip ring 113A interposed between the cutting body 111 and the actuator 150 . The cutting body 111 , the plurality of cutting blades 112 , and the moving body 113 may be formed of a conductive material. For example, the conductive material may include a metal.

The support structure 120 may support the cutting body 111 of the cutting tool 110 . The support structure 120 may include a frame 121 having an upper plate 122 , a side plate 123 , and a lower plate 124 . Top plate 122 , side plate 123 , and bottom plate 124 may be connected to each other in any suitable manner. For example, the upper plate 122 , the side plate 123 , and the lower plate 124 may be coupled to each other in a bolt-nut manner. Frame 121 may define an interior space to accommodate safety mechanism 130 , lift 140 , and actuator 150 therein.

The support structure 120 may include a pair of linear guides 125 . The pair of linear guides 125 may extend in a vertical direction between the upper plate 122 and the lower plate 124 and may be arranged in parallel. A pair of linear guides 125 may pass through the moving body 113 of the cutting tool 110 and guide the vertical movement of the moving body 113 .

The safety mechanism 130 may detect a risk of a user using the cutting tool 110 and prevent damage to the user's body. The safety mechanism 130 may be installed on the support structure 120 .

The safety mechanism 130 may include a cylinder 131 and a shaft 132 . The cylinder 131 may control the vertical movement of the shaft 132 . For example, the cylinder 131 may drive the shaft 132 in a hydraulic manner. The cylinder 131 may be installed on the lower plate 124 . The shaft 132 may be deployed in a vertical direction from the cylinder 131 or may be retracted into the cylinder 131 in a vertical direction. The shaft 132 is in a first position in a normal first state (see FIG. 3 ) in which the user uses the cutting tool 110 , and in a second position, which is a hazardous situation that may occur while the user uses the cutting tool 110 . It can move between the second positions in the states (see FIGS. 4 and 5 ).

The safety mechanism 130 may include a trigger 134 . The trigger 134 is disposed to be spaced apart from the shaft 132 when the shaft 132 is in the first position and engages the moving body 113 of the cutting tool 110 to secure the moving body 113 , while When the shaft 132 is in the second position, it may be disposed to meet the shaft 132 and disengaged from the moving body 113 of the cutting tool 110 to allow vertical movement of the moving body 113 .

The trigger 134 may include a pivot 133 and a rotating body having a first wing 135 and a second wing 136 . The pivot 133 is fixed to the side plate 123 of the support structure 120 . The rotating body having the first wing 135 and the second wing 136 may rotate around the pivot 133 . The first wing 135 extends from the pivot 133 in a first direction (e.g. horizontal direction), and the second wing 136 extends from the pivot 133 in a second direction (e.g. vertical direction) intersecting the first direction. can be extended to The first wing 135 and the second wing 136 may be integrally rotated about the pivot 133 at the same time. When the shaft 132 is in the first position, the first wing 135 is spaced from the shaft 132 and the second wing 136 supports the moving body 113 while the shaft 132 is When in the second position, the first wing 135 may meet the shaft 132 and the second wing 136 may be disengaged from the moving body 113 to no longer support the moving body 113 . .

The second wing 136 may include a base 137 that supports the movable body 113 when the shaft 132 is in the first position. The base 137 may protrude in a direction crossing the extending direction of the second wing 136 . When the shaft 132 moves from the first position to the second position, the shaft 132 meets the first wing 135 , and the first wing 135 and the second wing 136 move around the pivot 133 . rotates to, and while the base 137 rotates together with the second wing 136 , the base 137 does not support the moving body 113 any more. Accordingly, the moving body 113 may move downward along the pair of linear guides 125 , and the cutting body 111 connected to the moving body 113 may also move downwardly.

The second wing 136 may include a guide 138 for guiding the movable body 113 to the base 137 while the shaft 132 returns from the second position to the first position. The guide 138 may be inclined toward the end of the second wing 136 from the base 137 . This allows smooth seating of the moving body 113 on the base 137 when the moving body 113 moves upward along the pair of linear guides 125 .

The safety mechanism may include a sensor 139A and a controller 139B. The sensor 139A may detect a user's touch. For example, sensor 139A may be a capacitive sensor. When a part of the user's body comes into contact with the cutting blade 112 of the cutting tool 110, an electrical signal is transmitted to the slip ring 113A connected to the cutting body 111 through an electric wire EL, and then the sensor 139A. It is possible to detect an electrical signal of the slip ring 113A. The controller 139B sends a trigger driving signal to the cylinder 131 based on the electrical signal detected by the sensor 139A to vertically expand the shaft 132, and the shaft 132 is connected to the first wing 135 and can make you meet After that, when a predetermined time elapses and the electrical signal of the slip ring 113A is no longer detected, the controller 139B sends a trigger non-drive signal to the cylinder 131 to cause the shaft 132 to retract into the cylinder 131 . Alternatively, the shaft 132 may not be deployed from the cylinder 131 .

The lift 140 may control upward movement and downward movement of the cutting tool 110 . The lift 140 may include a lift cylinder 141 , a lift shaft 142 , and a lift actuator 143 . The lift shaft 142 is coupled to the moving body 113 of the cutting tool 110 . When the lift shaft 142 is deployed from the lift cylinder 141 by the driving of the lift actuator 143, the moving body 113 moves upward along the pair of linear guides 125, while the lift actuator ( When the lift shaft 142 is retracted into the lift cylinder 141 by driving 143 , the movable body 113 may move downward along the pair of linear guides 125 . The operation of the lift 140 may be controlled by the controller 139B.

The actuator 150 may rotationally drive the cutting body 111 . For example, the actuator 150 may be a rotation motor. The actuator 150 may be installed in the moving body 113 .

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (5)

a cutting tool comprising a cutting body and a cutting blade formed on the cutting body;
a support structure supporting the cutting body; and
a safety mechanism installed on the support structure;
including,
The safety mechanism is
a sensor installed on the support structure adjacent to the cutting blade and sensing a user's contact;
a shaft configured to move between a first position retracted when user contact is not detected and a second position deployed when user contact is detected; and
a first configuration spaced apart from the shaft and engaging the cutting body when the shaft is in the first position; and a second configuration engaging and disengaged from the cutting body when the shaft is in the second position. a trigger configured to take
safety device including
According to claim 1,
the trigger is
a pivot installed on the support structure; and
a rotating body rotatably installed on the pivot;
safety device including
3. The method of claim 2,
the rotating body
a first wing extending in a first direction from the pivot and configured to meet the shaft; and
a second wing extending from the pivot in a second direction different from the first direction and configured to support the cutting body;
safety device including
4. The method of claim 3,
wherein the rotating body further includes a base protruding from the second wing and configured to support the cutting body when the trigger assumes the first form.
5. The method of claim 4,
The rotating body is formed to be inclined from the base, the safety device further comprising a guide for guiding the cutting body to the base while the trigger takes the first shape after taking the second shape.

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