Work protecting device

Abstract

To provide a work protection device capable of protecting a worker using a working machine without being controlled by a control device or the like.SOLUTION: The work protection device 1 has a case part 10 and a cover part 50. The case unit 10 includes a plurality of work space sections S1 and S2 in which different work is performed by the worker with respect to the work machine M, a first opening section S1 connected to the first work space section P1, and a second opening section S2 connected to the second work space section P2. The cover section 50 is configured to be movable with respect to the case section 10 between a first position P1 that prevents the worker from accessing the inside of the first work space section S1 from the first opening section P2 and enables the worker to access the inside of the second work space section S2 from the second opening section F1 and a second position P2 that prevents the worker from accessing the inside of the second work space section S2 from the second opening section P1 and enables the worker to access the inside of the first work space section S1 from the first opening section. F2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work protection device that protects a worker who uses a work machine. [Background technology]

[0002] There are known work protection devices for protecting workers who use work machines. For example, Patent Document 1 discloses a safety device for a machine tool that includes a protective cover that covers at least the front of a processing area of ​​a press machine (machine tool) in which a fixed part and a movable part are provided.

[0003] The safety device includes an air cylinder that moves the protective cover between a normal position that releases the machining area and a closed position that covers the machining area, a switch that starts the air cylinder, detection means such as a limit switch or a photoelectric sensor that detects that the protective cover has reached the closed position, and machine tool drive means that drives the machine tool based on detection by the detection means. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication No. 60-161796 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the safety device of Patent Document 1 protects the worker by controlling a series of operations such as operation by the air cylinder, detection by the detection means, and drive by the machine tool drive means using a predetermined electric circuit (control device).

[0006] However, such a control device requires sensors and a controller, and also requires the development of algorithms to control these. Therefore, if an attempt is made to provide a work protection device equipped with such a control device to protect a worker using a work machine, the number of parts increases and the configuration becomes complex, making it difficult to introduce. Therefore, there is a need for a work protection device that can protect a worker using a work machine without being controlled by such a control device, etc.

[0007] An object of the present invention is to provide a work protection device that can protect a worker who uses a work machine without being controlled by a control device or the like. [Means for solving the problem]

[0008] A work protection device according to one embodiment of the present invention is a work protection device that protects a worker working on a work machine. The work protection device has a case that covers at least a portion of the work machine and a cover that is movably provided on the outer surface of the case. The case has a plurality of work space sections in which different tasks are performed by the worker on the work machine, a first opening that connects to a first work space section that is one of the plurality of work space sections, and a second opening that connects to a second work space section that is another of the plurality of work space sections. The cover is configured to be movable relative to the case between a first position that prevents the worker from accessing the first work space section through the first opening and allows the worker to access the second work space section through the second opening, and a second position that prevents the worker from accessing the second work space section through the second opening and allows the worker to access the first work space section through the first opening (first configuration).

[0009] According to the above-described configuration, by moving the cover portion to the first position, when an operator accesses the second work space portion through the second opening of the case portion to perform a predetermined task on the work machine, it is possible to prevent the operator from accessing the first work space portion through the first opening to perform another task on the work machine. Furthermore, by moving the cover portion to the second position, when an operator accesses the first work space portion through the first opening of the case portion to perform the other task on the work machine, it is possible to prevent the operator from accessing the second work space portion through the second opening to perform the predetermined task on the work machine.

[0010] This prevents the worker from, for example, inserting both hands into the first opening and the second opening separately to perform different tasks on the work machine at the same time. Therefore, for example, it is possible to prevent the worker from operating an operating part of the work machine with one hand while working on a moving part of the work machine with the other hand. Therefore, it is possible to provide a work protection device that can protect a worker who uses a work machine without being controlled by a control device or the like.

[0011] In the first configuration, the case is provided with a support portion located between the first opening and the second opening on the outer surface of the case and rotatably supporting one end of the cover portion. The other end of the cover portion moves in an arc around the support portion so as to move away from the case portion. The cover portion is sized to cover at least a portion of the first opening in the first position and to cover at least a portion of the second opening in the second position (second configuration).

[0012] As a result, by rotating the cover part around the support part located between the first opening and the second opening, the cover part can be switched between covering at least a portion of the first opening and covering at least a portion of the second opening. Therefore, a configuration that can prevent an operator from performing different tasks on a work machine at the same time can be more easily realized.

[0013] In the second configuration, the first opening is located above the second opening, and the support portion rotatably supports one end of the cover portion between the first position and the second position so as to rotate the cover portion in an up-down direction (third configuration).

[0014] This allows the cover portion, one end of which is supported by the support portion, to be moved vertically between the first position and the second position using gravity. Therefore, the cover portion can be easily moved from the first position to the second position. This makes it easier to realize a configuration that can prevent an operator from performing different tasks on a work machine at the same time.

[0015] The third configuration further includes a cover holding portion that holds the cover portion at the first position relative to the case portion (fourth configuration).

[0016] This allows the cover portion to be held in the first position relative to the case portion. Therefore, for example, when an operator places the cover portion in the first position and accesses the inside of the case portion through the second opening to perform work, the cover portion can be prevented from moving from the second position to the first position. Therefore, it is possible to more easily realize a configuration that can prevent the operator from simultaneously performing different tasks on the work machine, while improving the operator's workability.

[0017] In the second configuration, the cover portion has a size that covers the first opening at the first position and covers the second opening at the second position (fifth configuration).

[0018] This more reliably prevents the worker from accessing the first work space portion through the first opening when the cover portion is in the first position, and more reliably prevents the worker from accessing the second work space portion through the second opening when the cover portion is in the second position. Therefore, a configuration can be more reliably realized that can prevent the worker from performing different tasks on the work machine at the same time.

[0019] In the second configuration, the cover portion has a flat cover main body portion and a protrusion portion that protrudes from the cover main body portion on one side in the thickness direction of the cover main body portion so as to be inserted into the first opening at the first position (sixth configuration).

[0020] As a result, when the cover main body is moved from the first position to the second position, the protrusion can prevent the worker's hand from entering the case through the gap that is formed between the first opening and the cover main body, thereby more reliably realizing a configuration that can prevent the worker from performing different tasks on the work machine at the same time.

[0021] In the sixth configuration, the protrusion is located on the one end side of the cover main body (seventh configuration).

[0022] According to the above-described configuration, by positioning the protrusion on one end side of the cover main body, the protrusion protrudes so as to be inserted into the portion of the first opening that is closest to the second opening when in the first position. This allows the protrusion to prevent access from a gap that is formed between the cover main body and the first opening and that is located closer to the second opening. Therefore, it is possible to prevent an operator from accessing the first opening while accessing the second opening. This more reliably realizes a configuration that can prevent an operator from simultaneously performing different tasks on a work machine.

[0023] In the first configuration, the case portion has a partition wall that separates the first working space portion from the second working space portion (eighth configuration).

[0024] This prevents a worker from passing through the first work space section from the first opening to work in the second work space section, and also prevents a worker from passing through the second work space section from the second opening to work in the first work space section. Therefore, it is possible to prevent the worker from accessing different work space sections from the same opening to perform different tasks simultaneously. This makes it possible to more reliably achieve a configuration that can prevent workers from performing different tasks on a work machine simultaneously.

[0025] In the eighth configuration, the case portion includes a first case portion having the first working space portion and the first opening, a second case portion adjacent to the first case portion and having the second working space portion and the second opening, and a through hole passing through at least one of the first case portion and the second case portion so as to connect the first working space portion and the second working space portion, and at least a part of the work machine is disposed within the through hole (ninth configuration).

[0026] This allows the parts of the work machine where different tasks are performed to be separated into the first case section and the second case section. Therefore, the worker cannot access the first work space section and the second work space section at the same time, and therefore cannot perform the different tasks simultaneously. Therefore, a configuration can be more reliably realized that prevents the worker from simultaneously performing different tasks on the work machine.

[0027] A protective cover according to one embodiment of the present invention is a protective cover for protecting an operator working on a work machine at least partially covered by a case portion. The protective cover has a cover main body portion and a supported portion connected to the cover main body portion and supported on an outer surface of the case portion so as to be movable between a first position and a second position. The supported portion is supported relative to the case portion so that, in the first position, the cover main body portion is positioned to prevent access to a first working space portion from a first opening of the case portion and to allow access to a second working space portion from a second opening of the case portion, and so that, in the second position, the cover main body portion is positioned to prevent access to the second working space portion from the second opening and to allow access to the first working space portion from the first opening (tenth configuration).

[0028] According to the above-described configuration, by moving the cover main body to the first position, when an operator accesses the second work space portion through the second opening of the case portion to perform a predetermined task on the work machine, it is possible to prevent the operator from accessing the first work space portion through the first opening to perform another task on the work machine. Furthermore, by moving the cover main body to the second position, when an operator accesses the first work space portion through the first opening of the case portion to perform the other task on the work machine, it is possible to prevent the operator from accessing the second work space portion through the second opening to perform the predetermined task on the work machine.

[0029] This prevents the worker from inserting both hands into the first opening and the second opening separately to simultaneously perform different tasks on the work machine, and therefore provides a protective cover that can protect the worker using the work machine without being controlled by a control device or the like.

[0030] In the tenth configuration, the cover main body portion has a size that covers the first opening at the first position and covers the second opening at the second position (eleventh configuration).

[0031] This allows the cover main body portion to more reliably prevent workers from accessing the first work space portion through the first opening when in the first position, and more reliably prevent workers from accessing the second work space portion through the second opening when in the second position. [Effects of the Invention]

[0032] According to one exemplary embodiment of the present invention, the cover portion of the work protection device is configured to be movable between a first position in which the cover portion prevents the worker from accessing a first work space portion through a first opening provided in the case portion, and allows the worker to access a second work space portion through a second opening provided in the case portion, and a second position in which the cover portion prevents the worker from accessing the second work space portion through the second opening, and allows the worker to access the first work space portion through the first opening, with respect to a case portion having a plurality of work space portions in which different work is performed by the worker on the work machine.

[0033] This configuration prevents the worker from, for example, inserting both hands into the first opening and the second opening separately to perform different tasks on the work machine at the same time, thereby providing a work protection device that can protect the worker who uses the work machine without being controlled by a control device or the like. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a perspective view that schematically shows the general configuration of a working device according to an embodiment. [Figure 2] FIG. 2 is a front view of the working device including the work protection device when the cover portion is located at the upper opening closing position. [Figure 3] FIG. 3 is a plan view of the working device. [Figure 4] FIG. 4 is a left side view illustrating the structure of the support portion and showing the working apparatus including the work protection device when the cover portion is positioned at the upper opening closing position. [Figure 5]FIG. 5 is a left side view illustrating the structure of the support portion and showing the working apparatus including the work protection device when the cover portion is positioned at the lower opening closing position. [Figure 6] FIG. 6 is a front view of the working device including the work protection device when the cover portion is located at the lower opening closing position. [Figure 7] FIG. 7 is a left side view of the working apparatus including the work protection device when the cover portion is positioned above the midpoint between the upper opening closing position and the lower opening closing position. [Figure 8] FIG. 8 is a left side view of the working apparatus including the work protection device when the cover portion is positioned midway between the upper opening closing position and the lower opening closing position. [Figure 9] FIG. 9 is a perspective view showing a schematic configuration of the cover portion. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals and description thereof will not be repeated.

[0036] In addition, in each figure used in this specification, the arrangement of each component is shown schematically to explain the interrelationship between each component, and differs from the actual dimensional ratio, etc.

[0037] In the following description, the up-down direction of the workbench 90 will be simply referred to as the up-down direction, and one of the directions perpendicular to the up-down direction will be simply referred to as the left-right direction. The direction perpendicular to the up-down direction and the left-right direction will be simply referred to as the front-rear direction.

[0038] (Embodiment) (Overall composition) An example of a working device 100 including an operator's protective device 1 according to an embodiment will be described with reference to Fig. 1 to Fig. 4. Fig. 1 is a perspective view showing a schematic configuration of the working device 100. Fig. 2 is a front view of the working device 100. Fig. 3 is a plan view of the working device 100. Fig. 4 is a left side view of the working device 100.

[0039] The work implement 100 is a device for performing work using the work machine M while protecting the worker using the work machine M. As shown in FIGS. 1, 2, and 4, the work implement 100 has a work platform 90, the work machine M, and a work protection device 1.

[0040] The work platform 90 has a flat plate portion 91 and a plurality of legs 92 that support the flat plate portion 91. The work machine M and the work protection device 1 are placed on the flat plate portion 91 of the work platform 90. In other words, the work platform 90 supports the work machine M and the work protection device 1.

[0041] The work machine M is a device that performs a predetermined operation by being operated by an operator. The predetermined operation includes, for example, processing such as pressing, cutting, bending, and excavating a workpiece, which is an object to be processed, and moving and arranging a sample.

[0042] The work machine M has an operating unit M2 that performs the predetermined work, and an operating unit M1 through which an operator operates the operating unit M2. For example, if the work machine M is an electric drill, the operating unit M2 is a rotatable drill unit of the electric drill, and the operating unit M1 is an operation button for switching the rotation of the drill unit on and off, changing the rotation speed, etc. Furthermore, if the work machine M is a press, the operating unit M2 is a processing unit that applies pressure to a workpiece in the press, and the operating unit M1 is a control panel for switching the operation of the press on and off, changing the magnitude of pressure, etc.

[0043] The worker performs an operation on the operation unit M1, such as operating the operation unit M2, etc. The worker performs an operation on the operation unit M2, such as setting a workpiece, which is different from the operation on the operation unit M1.

[0044] In the work protection device 1, the operating unit M1 and the operating unit M2 of the work machine M are covered by an operating unit case 11 and an operating unit case 12, respectively, which will be described later. In addition, in the work protection device 1, an upper opening P1, which will be described later, is provided in the operating unit case 11, and a lower opening P2, which will be described later, is provided in the operating unit case 12, and the upper opening P1 and the lower opening P2 are configured to be selectively covered by a cover unit 50. Specifically, the work protection device 1 has a case unit 10 and a cover moving mechanism G that includes the cover unit 50.

[0045] The case unit 10 is placed on the workbench 90 and covers the work machine M. The case unit 10 has a shape like two transparent boxes of approximately rectangular parallelepiped shape stacked one on top of the other in a vertical direction. The case unit 10 has an operation unit case unit 11 and an operating unit case unit 12. The operation unit case unit 11 covers the operation unit M1 of the work machine M. The operating unit case unit 12 covers the operating unit M2 of the work machine M. The operation unit case unit 11 corresponds to the first case unit, and the operating unit case unit 12 corresponds to the second case unit.

[0046] The operating unit case 11 and the operating unit case 12 are each a rectangular parallelepiped, with each surface except the bottom surface being made of a transparent flat plate material such as transparent hard PVC. More specifically, the operating unit case 11 and the operating unit case 12 each have a front surface, a right side surface, a rear surface, a left side surface, and a top surface. In this embodiment, the operating unit case 11 and the operating unit case 12 do not have a bottom surface.

[0047] The operating unit case 11 and the operating unit case 12 are connected in the vertical direction. The operating unit case 11 is adjacent to the operating unit case 12 in the vertical direction. As shown in FIGS. 1, 2, and 4, the operating unit case 11 is arranged with respect to the operating unit case 12 such that one side of the lower end of the front surface of the operating unit case 11 coincides with one side of the upper end of the front surface of the operating unit case 12, and one side of the lower end of the right side surface of the operating unit case 11 coincides with one side of the upper end of the right side surface of the operating unit case 12. In this embodiment, as shown in FIG. 3, the outer size of the operating unit case 11 is smaller than the outer size of the operating unit case 12 in a plan view.

[0048] The space between the operation unit case 11 and the operation unit case 12 is vertically separated by the top surface of the operation unit case 12. That is, in the case 10, the top surface of the operation unit case 12 functions as a partition wall separating the space inside the operation unit case 11 (operation unit working space S1 described below) from the space inside the operation unit case 12 (operation unit working space S2 described below).

[0049] A through hole 15 is provided in the top surface of the movement unit case portion 12 in a portion above which the operation unit case portion 11 is located. That is, the through hole 15 passes through the top surface of the movement unit case portion 12 in the vertical direction. As a result, the through hole 15 connects the space inside the operation unit case portion 11 and the space inside the movement unit case portion 12.

[0050] The work machine M is installed inside the case part 10 so as to pass through the through-hole 15. That is, at least a part of the work machine M is arranged inside the through-hole 15. The operation part M1 of the work machine M is arranged inside the operation part case part 11, and the operating part M2 of the work machine M is arranged inside the operating part case part 12.

[0051] With the above-described configuration, as shown in FIGS. 1, 2, and 4, the operation unit case 11 has an operation unit workspace S1 therein. The operation unit workspace S1 includes an operation unit proximity area S11. The operation unit proximity area S11 is an area surrounding the operation unit M1, and is an area where an operator operates the operation unit M1. In other words, the operator operates the operation unit M1 by accessing the operation unit proximity area S11. The operation unit workspace S1 corresponds to the first workspace.

[0052] The operation unit case 11 has an upper opening P1 on the front surface. The upper opening P1 is an opening through which an operator can insert his / her hand into the operation unit case 11 to access the operation unit work space S1. The operator can access the operation unit proximity area S11 by inserting his / her hand into the operation unit work space S1 through the upper opening P1. The upper opening P1 is provided as a rectangular opening on the front surface of the operation unit case 11. The upper opening P1 corresponds to the first opening.

[0053] The operating unit case 12 has an operating unit workspace S2 therein. The operating unit workspace S2 includes an operating unit proximity area S21. The operating unit proximity area S21 is an area surrounding the operating unit M2, and is an area where a worker performs predetermined work on the operating unit M2, such as transporting, setting, or replacing a workpiece. In other words, the worker accesses the operating unit proximity area S21 to perform the predetermined work on the operating unit M2. The operating unit workspace S2 corresponds to the second workspace.

[0054] The operating unit case 12 has lower openings P2, P2 on the front surface. The lower openings P2, P2 are openings through which an operator can insert their hands into the operating unit case 12 to access the operating unit workspace S2. The operator can access the operating unit proximity area S21 by inserting their hands into the operating unit workspace S2 through the lower opening P2. The lower openings P2, P2 are provided in a circular shape on the front surface of the operating unit case 12. That is, as shown in FIGS. 1 and 2, the lower openings P2, P2 in this embodiment are two circular through-holes aligned in the left-right direction so that the operator's arms can be inserted therethrough. The lower openings P2, P2 correspond to the second openings.

[0055] Although not shown, airtight globes are attached to the lower openings P2, P2, respectively. Cases with globes attached to openings in this manner are well known, and therefore detailed description thereof will be omitted.

[0056] With the above configuration, the case unit 10 has a plurality of work spaces S1, S2 formed by the operation unit case unit 11 and the movement unit case unit 12. That is, the case unit 10 has an operation unit work space S1 where an operator performs a predetermined task on the operation unit M1, and a work space S2 where an operator performs a different task on the movement unit M2. In addition, in the case unit 10, the upper opening P1 of the operation unit case unit 11 is located above the lower openings P2, P2 of the movement unit case unit 12. The upper opening P1 and the lower openings P2, P2 are aligned vertically so that they can be selectively covered from the front by rotating the cover unit 50, which will be described later.

[0057] (Cover moving mechanism) The cover moving mechanism G has a cover portion 50, support portions 20, 20, and holding portions 30, 30. The cover portion 50 is formed as a separate member from the case portion 10. The cover portion 50 corresponds to a protective cover. The holding portions 30, 30 correspond to cover holding portions.

[0058] The structure of the cover part 50 will be described with reference to Fig. 9. Fig. 9 is a perspective view showing a schematic configuration of the cover part 50. The cover part 50 has a cover main body part 51 and a protrusion part 52.

[0059] The cover main body 51 is made of a transparent flat plate member such as transparent hard PVC so as to cover the upper opening P1 or the lower opening P2. Specifically, the cover main body 51 is sized to cover at least a portion of the upper opening P1 when in the upper opening closing position F1 (described later), and to cover at least a portion of the lower opening P2 when in the lower opening closing position F2. The cover main body 51 has supported portions 51 a and held portions 51 b.

[0060] The supported portions 51a, 51a are provided side by side in the width direction at the lower end portion, which is one end side of the cover main body portion 51. Fixed portions 22 of the supporting portions 20, 20, which will be described later, are fixed to the supported portions 51a, 51a.

[0061] The held portions 51b are provided at the upper end portion, which is the other end side, of the cover main body portion 51. The held portions 51b are portions that are held by the holding portions 30, which will be described later. For example, when the holding portions 30, which will be described later are magnets, the held portions 51b are made of a magnetic material such as a metal plate.

[0062] The protruding portion 52 protrudes from the cover main body 51 in one direction in the thickness direction of the cover main body 51. The protruding portion 52 has a pair of side plate portions 52a, 52a and a connecting plate portion 52b.

[0063] The pair of side plates 52a, 52a are each a transparent flat plate member made of, for example, transparent hard PVC, and are located at both ends in the width direction of the cover main body 51. The pair of side plates 52a, 52a are each formed in a quarter-circle shape and are attached to the cover main body 51 so that their arcs are located on the lower side and protrude to one side in the thickness direction. The pair of side plates 52a, 52a are attached to the lower portion of the cover main body 51.

[0064] The connecting plate portion 52b is a rectangular flat plate member that connects the pair of side plate portions 52a, 52a to each other in the width direction, and protrudes in one direction in the thickness direction from the center in the up-down direction of the cover main body portion 51. In other words, the pair of side plate portions 52a, 52a are connected to the cover main body portion 51 and the connecting plate portion 52b.

[0065] In this embodiment, the pair of side plate portions 52a, 52a and the connecting plate portion 52b are formed by connecting separate flat plate members. Alternatively, the pair of side plate portions 52a, 52a and the connecting plate portion 52b may be integrally formed.

[0066] The structure of the support part 20 will be described with reference to Figures 4 and 5. In Figure 4, the cover part 50 is located in an upper opening closing position F1, which will be described later. Figure 5 is a left side view of the working device 100 including the work protection device 1 when the cover part 50 is located in a lower opening closing position F2, which will be described later. The support parts 20, 20 are located on the outer surface of the case part 10, between the upper opening P1 and the lower opening P2 at the upper front surface of the operating part case part 12, and rotatably support the cover part 50. The support parts 20, 20 have the same structure and are arranged side by side in the left-right direction on the case part 10. Only one of the support parts 20 will be described below, and a description of the other support part 20 will be omitted.

[0067] 4 and 5, the support part 20 has a pair of fixed parts 22, 22 and a rotary connecting part 25. The pair of fixed parts 22, 22 are, for example, a pair of flat plate members with screw holes or the like formed therein. The rotary connecting part 25 connects the pair of fixed parts 22, 22 to each other so that they can rotate about a rotation axis. The support part 20 can be, for example, a known hinge or the like.

[0068] An attachment offset portion 12a that protrudes forward from the upper end of the front surface of the operating unit case portion 12 is provided. One of the fixing portions 22 of the support portion 20 is fixed to the attachment offset portion 12a with, for example, a screw. This prevents the cover main body portion 51 from interfering with the front surface of the operating unit case portion 11 when the cover portion 50 is positioned in the upper opening closing position F1, as shown in FIG.

[0069] The other fixed portion 22 of the support portion 20 is fixed to the supported portion 51a of the cover main body portion 51. This allows the support portion 20 to support the cover portion 50 rotatably relative to the case portion 10 around the rotational connecting portion 25. That is, as shown by the outline arrow in FIGS. 4 and 5 , the support portion 20 can rotate the cover portion 50 so that the upper end portion of the cover main body portion 51 supported by the support portion 20 moves away from the case portion 10 along an arc-shaped path around the rotational connecting portion 25.

[0070] In this way, the cover moving mechanism G supports the cover portion 50 rotatably relative to the outer surface of the case portion 10 by the support portions 20, 20. This allows the cover portion 50 to cover the lower opening P2 when in the lower opening closing position F2 described below, and to cover the upper opening P1 when in the upper opening closing position F1.

[0071] As shown in Fig. 2, the holding portions 30, 30 are provided side by side in the left-right direction at the upper end of the front surface of the operation unit case 11. As shown in Figs. 4 and 5, the holding portion 30 can hold the held portion 51b of the cover portion 50. The holding portion 30 is, for example, a magnet. By moving the held portion 51b of the cover portion 50 away from the holding portion 30, the held portion 51b can be put into an unheld state with respect to the holding portion 30.

[0072] (Cover movement) Movement of the cover part 50 will be described with reference to Figures 2 and 4-8. Figure 6 is a front view of the working device 100 including the work protection device 1 when the cover part 50 is located at the lower opening blocking position F2. Figure 7 is a left side view of the working device 100 including the work protection device 1 when the cover part 50 is located above the midpoint between the upper opening blocking position F1 and the lower opening blocking position F2. Figure 8 is a left side view of the working device 100 including the work protection device 1 when the cover part is located at the midpoint between the upper opening blocking position F1 and the lower opening blocking position F2.

[0073] The cover part 50 is supported by the support part 20 so as to be rotatable relative to the case part 10 between an upper opening closing position F1 and a lower opening closing position F2. The upper opening closing position F1 corresponds to the first position, and the lower opening closing position F2 corresponds to the second position.

[0074] 2 and 4, the upper opening closing position F1 is a position where the cover main body 51 is disposed along the front surface of the operation unit case 11 so as to cover the upper opening P1 from the front. When the cover 50 is positioned at the upper opening closing position F1, the cover 50 covers the upper opening P1 to prevent an operator's hand from reaching inside, while leaving the lower opening P2 open.

[0075] 5 and 6, the lower opening closing position F2 is a position where the cover main body 51 is disposed along the front surface of the operating unit case 12 so as to cover the lower opening P2 from the front. When the cover 50 is positioned in the lower opening closing position F2, the cover 50 covers the lower opening P2 to prevent an operator's hand from reaching inside, while leaving the upper opening P1 open.

[0076] In this embodiment, the description that the cover part 50 (cover main body part 51) covers the upper opening P1 or the lower opening P2 means a state in which an operator cannot access the work space part (operation unit work space part S1, action unit work space part S2) inside the case part 10 from a gap formed between the cover main body part 51 and the upper opening P1 or the lower opening P2. More specifically, this means a state in which an operator cannot access the close area (operation unit close area S11, action unit close area S21) of the work machine M located inside the work space part of the case part 10 from the gap. In other words, this means a state in which an operator cannot come into contact with the work machine M located inside the case part 10.

[0077] In other words, when the cover part 50 is positioned in the upper opening blocking position F1, the cover main body part 51 of the cover part 50 prevents the worker from accessing the operation part working space part S1 from the upper opening part P1, while allowing the worker to access the operation part working space part S2 from the lower opening part P2.

[0078] Specifically, when the cover part 50 is positioned at the upper opening blocking position F1, the cover main body part 51 of the cover part 50 prevents the worker from accessing the area S11 close to the operating part from the upper opening P1, while allowing the worker to access the area S21 close to the operating part from the lower opening P2.

[0079] Furthermore, when the cover part 50 is positioned in the lower opening blocking position F2, the cover main body part 51 of the cover part 50 prevents workers from accessing the working space part S2 for the operating part from the lower opening part P2, while allowing workers to access the working space part S1 for the operating part from the upper opening part P1.

[0080] Specifically, when the cover part 50 is positioned at the lower opening blocking position F2, the cover main body part 51 of the cover part 50 prevents the worker from accessing the area S21 close to the operating part from the lower opening P2, while allowing the worker to access the area S11 close to the operating part from the upper opening P1.

[0081] 2 and 4, when the cover main body 51 is in the upper opening closing position F1, the cover main body 51 is held by the holding portions 30, 30. Therefore, for example, when an operator positions the cover 50 in the upper opening closing position F1 and accesses the inside of the case 10 through the lower opening P2 to perform work, the cover 50 can be prevented from moving from the upper opening closing position F1 to the lower opening closing position F2. Therefore, it is possible to more easily realize a configuration that can prevent the operator from simultaneously performing different tasks on the work machine M, while improving the operator's workability.

[0082] 5 and 6, the cover main body 51 is moved away from the holders 30, 30, thereby entering an unheld state in which it is not held by the holders 30, 30. In this embodiment, as described above, the support 20 supports one end of the cover 50 between the upper opening closing position F1 and the lower opening closing position F2 so as to be freely rotatable, allowing the cover 50 to rotate in the vertical direction.

[0083] This allows the cover part 50, one end of which is supported by the support part 20, to move up and down between the upper opening closing position F1 and the lower opening closing position F2 by utilizing gravity. Therefore, the cover part 50 can be easily moved from the upper opening closing position F1 to the lower opening closing position F2.

[0084] As shown in Fig. 4, the protrusion 52 is inserted into the operation unit case 11 at the upper opening closing position F1. When the cover unit 50 is rotated around the support unit 20 in the direction shown by the outline arrow in Fig. 4, the cover unit 50 is positioned above the midpoint between the upper opening closing position F1 and the lower opening closing position F2, as shown in Fig. 7. In this case, a gap is created between the cover main body 51 and the upper opening P1 in the left-right direction and an upward gap.

[0085] 7, the pair of side plate portions 52a, 52a of the protrusion 52 can cover the gap in the left-right direction that occurs between the cover main body portion 51 and the upper opening P1. The connecting plate portion 52b of the protrusion 52 can cover the upper gap that occurs between the cover main body portion 51 and the upper opening P1.

[0086] As a result, the protrusion 52 can prevent the worker from accessing the operation unit work space S1 through the gap between the cover main body 51 and the upper opening P1. Specifically, the protrusion 52 can prevent the worker from accessing the operation unit proximity area S11 through the gap between the cover main body 51 and the upper opening P1. This more reliably achieves a configuration that can prevent the worker from performing different tasks on the work machine M at the same time.

[0087] In this embodiment, the protruding portion 52 is located on the supported portion 51a side, which is one end side of the cover main body portion 51. According to the configuration described above, the protruding portion 52 is located on the supported portion 51a side of the cover main body portion 51, and therefore the protruding portion 52 can more reliably prevent access from a gap that occurs between the cover main body portion 51 and the upper opening P1. Therefore, it is possible to prevent an operator from accessing the operating unit workspace portion S1 from the upper opening P1 while accessing the operating unit workspace portion S2 from the lower opening P2. Therefore, it is possible to more reliably realize a configuration that can prevent an operator from performing different tasks on the work machine M at the same time.

[0088] In addition, the length of the pair of side plate portions 52a, 52a and connecting plate portion 52b of the protrusion portion 52 protruding in one direction in the thickness direction of the cover main body portion 51 is such that they do not interfere with the upper opening P1 when the cover portion 50 rotates around the support portions 20, 20.

[0089] 8, when the cover part 50 is positioned midway between the upper opening closing position F1 and the lower opening closing position F2, the cover main body part 51 extends horizontally from the front surface of the case part 10. Therefore, an operator cannot approach the upper opening part P1 and the lower opening part P2 provided on the front surface of the case part 10 from the front of the case part 10.

[0090] Moreover, even in this state, the pair of side plate portions 52a, 52a of the protrusion 52 prevent an operator from accessing the operation unit working space S1 through the left-right gap generated between the cover main body 51 and the upper opening P1. The connecting plate portion 52b of the protrusion 52 prevents an operator from accessing the operation unit working space S1 through the upper gap generated between the cover main body 51 and the upper opening P1.

[0091] In this way, by having the protrusion 52 on the cover part 50, it is possible to prevent the worker from simultaneously accessing the working space part S1 for the operation part and the working space part S2 for the action part, even when the cover part 50 is rotating around the support parts 20, 20.

[0092] The work protection device 1 according to the present embodiment described above comprises a case 10 that covers the operation unit M1 and the operation unit M2 of the work machine M, and a cover 50 that is movably provided on the outer surface of the case 10. The case 10 has an operation unit workspace S1 and an operation unit workspace S2 in which different tasks are performed by operators on the work machine M, an upper opening P1 that connects to the operation unit workspace S1, and a lower opening P2 that connects to the operation unit workspace S2. The cover 50 is configured to be movable with respect to the case 10 between an upper opening closing position F1 that prevents an operator from accessing the operation unit workspace S1 from the upper opening P1 and allows an operator to access the operation unit workspace S2 from the lower opening P2, and a lower opening closing position F2 that prevents an operator from accessing the operation unit workspace S2 from the lower opening P2 and allows an operator to access the operation unit workspace S1 from the upper opening P1.

[0093] According to the above-described configuration, by moving the cover portion 50 to the upper opening blocking position F1, when a worker accesses the working space portion S2 for the operating unit from the lower opening P2 of the case portion 10 to perform a predetermined task on the operating unit M2 of the work machine M, it is possible to prevent the worker from accessing the working space portion S1 for the operating unit from the upper opening P1 to perform another task on the operating unit M1 of the work machine M.

[0094] Furthermore, by moving the cover part 50 to the lower opening blocking position F2, when a worker accesses the operation part work space part S1 from the upper opening part P1 of the case part 10 to perform the other task on the operation part M1 of the work machine M, it is possible to prevent the worker from accessing the operating part work space part S2 from the lower opening part P2 to perform the specified task on the operating part M2 of the work machine M.

[0095] This prevents the worker from, for example, inserting both hands into the upper opening P1 and the lower opening P2 separately to simultaneously perform different tasks on the operating unit M1 and the operating unit M2 of the work machine M. Therefore, it is possible to provide a work protection device 1 that can protect the worker who uses the work machine M without being controlled by a control device or the like.

[0096] The cover unit 50 according to this embodiment has a cover main body 51 and supported portions 51a, 51a that are provided on the cover main body 51 and supported on its outer surface relative to the case unit 10 so as to be movable between an upper opening closing position F1 and a lower opening closing position F2. The supported portions 51a, 51a are movably supported relative to the case unit 10 so that, at the upper opening closing position F1, the cover main body 51 is positioned to prevent access from the upper opening P1 into the operation unit workspace S1 and to allow access from the lower opening P2 into the operation unit workspace S2, and so that, at the lower opening closing position F2, the cover main body 51 is positioned to prevent access from the lower opening P2 of the case unit 10 into the operation unit workspace S2 and to allow access from the upper opening P1 of the case unit 10 into the operation unit workspace S1.

[0097] Therefore, it is possible to provide a cover portion 50 that can protect the worker using the work machine M without being controlled by a control device or the like.

[0098] In this embodiment, the case 10 has support parts 20, 20 that are located on the outer surface of the case 10 between an upper opening P1 and a lower opening P2 and rotatably support one end of the cover 50. The other end of the cover 50 moves in an arc around the support parts 20, 20 so as to move away from the case 10. The cover 50 is sized to cover at least a portion of the upper opening P1 when in the upper opening closing position F1 and to cover at least a portion of the lower opening P2 when in the lower opening closing position F2.

[0099] As a result, by rotating the cover part 50 around the supports 20, 20 located between the upper opening P1 and the lower opening P2, the cover part 50 can be switched between a state in which it covers at least a portion of the upper opening P1 and a state in which it covers at least a portion of the lower opening P2. Therefore, a configuration that can prevent an operator from performing different tasks on the work machine M at the same time can be more easily realized.

[0100] In this embodiment, the case 10 has a top surface of the action part case 12 which serves as a partition wall separating the operation part work space S1 and the action part work space S2.

[0101] This prevents a worker from passing through the operation unit work space section S2 from the lower opening P2 to work in the operation unit work space section S1, and also prevents a worker from passing through the operation unit work space section S1 from the upper opening P1 to work in the operation unit work space section S2. Therefore, it is possible to prevent a worker from accessing different work space sections from the same opening and performing different tasks simultaneously. This makes it possible to more reliably achieve a configuration that can prevent a worker from performing different tasks on a work machine simultaneously.

[0102] In this embodiment, the case section has an operating section case section 11 having an operating section working space section S1 and an upper opening section P1, an operating section case section 12 adjacent to the operating section case section 11 and having an operating section working space section S2 and a lower opening section P2, and a through hole 15 passing through the operating section case section 12 so as to connect the operating section working space section S1 and the operating section working space section S2. At least a part of the work machine M is arranged inside the through hole 15.

[0103] This allows the operating unit M1 to be arranged in the operating unit case 11, and the operating unit M2 to be arranged in the operating unit case 12. Therefore, the worker cannot access the operating unit work space S1 and the operating unit work space S2 at the same time, and therefore cannot operate the operating unit M1 while working on the operating unit M2. This makes it possible to more reliably achieve a configuration that prevents the worker from performing different tasks on the work machine M at the same time.

[0104] (Other embodiments) Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiments, and it is possible to appropriately modify the above-described embodiments within the scope of the spirit of the present invention.

[0105] In the above embodiment, the work machine M has an operating unit M1 and an operating unit M2. The case unit 10 has an operating unit case unit 11 that covers the operating unit M1, and an operating unit case unit 12 that covers the operating unit M2. However, the work machine may have a configuration other than the operating unit, or may have a configuration other than the operating unit. The work machine may have an operating unit located away from the work machine main body. The work machine may have multiple operating units or operating units.

[0106] Furthermore, the case unit only needs to cover at least a portion of the work machine. The case unit may cover a component of the work machine that is not a moving unit or an operating unit. The case unit may cover each of a plurality of moving units or operating units.

[0107] The operating unit case 11, the operating unit case 12, and the cover 50 are made of a transparent flat plate material such as transparent hard PVC. However, the operating unit case, the operating unit case, and the cover may be made of a transparent flat plate material other than transparent hard PVC. For example, they may be made of other transparent resins such as polycarbonate, glass, etc. Furthermore, at least one of the operating unit case, the operating unit case, and the cover may be made of at least a portion of a non-transparent flat plate material. For example, they may be made of an opaque resin such as ABS, a metal plate, etc.

[0108] In the above embodiment, the operating unit case 11 and the operating unit case 12 do not have a bottom surface. The top surface of the operating unit case 12 functions as a partition wall separating the operating unit work space S1 and the operating unit work space S2. The through-hole 15 penetrates the top surface of the operating unit case 12 in the vertical direction. However, at least one of the operating unit case and the operating unit case may have a bottom surface. In this case, the partition wall may be formed by the bottom surface of the operating unit case, and the through-hole may penetrate the bottom surface of the operating unit case. Alternatively, the partition wall may be formed by the bottom surface of the operating unit case and the top surface of the operating unit case. In this case, the through-hole penetrates the bottom surface of the operating unit case and the top surface of the operating unit case.

[0109] In the above embodiment, the work machine M is disposed within the through-hole 15 of the case portion 10. However, the work machine does not have to be disposed within the through-hole. For example, the operating unit of the work machine may be disposed within the operating unit case portion, and an operating unit capable of wirelessly operating the operating unit may be disposed within the operating unit case portion. In this case, the through-hole may not be required.

[0110] In the above embodiment, the operating unit case 11 and the operating unit case 12 are separate bodies. The space inside the operating unit case 11 and the space inside the operating unit case 12 are vertically separated by the top surface of the operating unit case 12. However, the operating unit case and the operating unit case may be integrally molded, and their respective internal spaces may be integrated. In this case, a partition wall may be provided in the internal space to block access between the operating unit proximity area and the operating unit proximity area.

[0111] In the above embodiment, the lower openings P2, P2 include two circular through-holes spaced apart from each other in the left-right direction so that both arms can be inserted. However, the lower openings do not have to include two circular through-holes. For example, the lower openings may be a single through-hole into which both hands or one hand can be inserted. The through-hole may have a shape other than a circle.

[0112] In the above embodiment, airtight globes are attached to the lower openings P2, P2, respectively, but globes may not be provided on the lower openings.

[0113] In the above embodiment, the operating unit case 11 has no openings other than the upper opening P1, and the moving unit case 12 has no openings other than the lower openings P2, P2. The operating unit case may have an opening other than the upper opening. The moving unit case may have an opening other than the lower opening.

[0114] In the above embodiment, the upper opening P1 opens to the front surface of the operation unit case 11 so as to connect to the operation unit working space S1. The lower openings P2, P2 open to the front surface of the operation unit case 12 so as to connect to the working space S2. However, the upper opening may open to any surface of the operation unit case as long as it opens to connect to the operation unit working space. The lower opening may open to any surface of the operation unit case as long as it opens to connect to the working space S2.

[0115] In the above embodiment, the support parts 20, 20 are located between the upper opening P1 and the lower opening P2 on the outer surface of the case part 10, and support the cover part 50 rotatably relative to the outer surface of the case part 10. However, the support parts do not have to support the cover part rotatably. For example, the support parts may support the cover part slidably relative to the outer surface of the case part. In other words, the support parts may have any configuration as long as they support the cover part movably relative to the outer surface of the case part.

[0116] In the above embodiment, the case portion 10 has the holding portions 30, 30. The cover portion 50 has the held portions 51 b, 51 b. However, the case portion does not have to have the holding portions. The cover portion does not have to have the held portions.

[0117] In the above embodiment, the cover body 51 of the cover unit 50 is sized to cover at least a portion of the upper opening P1 when in the upper opening closing position F1 and to cover at least a portion of the lower opening P2 when in the lower opening closing position F2. However, the cover body 51 of the cover unit may be sized to completely cover the upper opening when viewed from the front when in the upper opening closing position and completely cover the lower opening when viewed from the front when in the lower opening closing position.

[0118] This more reliably prevents workers from accessing the working space for the operating unit from the upper opening when the upper opening is in the closed position, and more reliably prevents workers from accessing the working space for the operating unit from the lower opening when the lower opening is in the closed position.

[0119] In the above embodiment, the cover portion 50 has the protrusion 52. However, the cover portion does not have to have the protrusion.

[0120] In the above embodiment, the protrusion 52 has a pair of side plate portions 52a, 52a formed of a quarter-circular flat plate member. However, the pair of side plate portions may have a shape other than a quarter-circular shape. For example, the pair of side plate portions may have a semicircular shape with the center of the cover main body portion in the vertical direction as the center. This can more widely prevent workers from accessing through the left-right gap formed between the cover main body portion and the upper opening. The pair of side plate portions may have a shape other than a circle. For example, they may have a polygonal shape or the like. The side plate portions may be provided on only one side, not both sides.

[0121] In the above embodiment, the protrusion 52 has a connecting plate 52b formed of a rectangular flat plate member that connects the pair of side plates 52a, 52a in the width direction. However, the connecting plate may have a shape other than rectangular. The connecting plate may connect any portion of the pair of side plates.

[0122] In the above embodiment, in the upper opening closing position F1, the cover main body 51 is positioned along the front surface of the operating unit case 11 so as to cover the upper opening P1. In the lower opening closing position F2, the cover main body 51 is positioned along the front surface of the operating unit case 12 so as to cover the lower opening P2. However, the cover main body does not have to be positioned along the front surface of the operating unit case 11 at the upper opening closing position. It is sufficient that the cover main body is positioned so as to overlap at least a portion of the upper opening when viewed from the front of the operating unit case 11 at the upper opening closing position. Furthermore, the cover main body does not have to be positioned along the front surface of the operating unit case 11 at the lower opening closing position. It is sufficient that the cover main body is positioned so as to overlap at least a portion of the lower opening when viewed from the front of the operating unit case 11 at the lower opening closing position. [Industrial Applicability]

[0123] The present invention can be used in a work protection device that protects a worker who uses a work machine. [Explanation of symbols]

[0124] 100 Working device 1 Working protection device 10 Case part 11 Case part for operation part (First case part) S1 Working space part for operation part (First working space part) S11 Area near the operation part P1 Upper opening (First opening) 12 Case part for moving part (Second case part) 12a Mounting offset part S2 Working space part for moving part (Second working space part) S21 Area near the moving part P2 Lower opening (Second opening) 15 Through hole [[ID= 30]]20 Support part 22 Fixing part 25 Rotational connection part 30 Holding part 50 Cover part 51 Cover main body part 51a Supported part 51b Held part 52 Protrusion part 52a Side plate part 52b Connection plate part 90 Workbench 91 Flat plate part 92 Leg part F1 Upper opening closing position (First position) F2 Lower opening closing position (Second position) M Working machine M1 Operation part M2 Moving part G Cover moving mechanism

Claims

1. A work protection device for protecting a worker working on a work machine, a case portion that covers at least a portion of the work machine; a cover portion movably provided on an outer surface of the case portion; and The case portion is a plurality of work space sections in which different tasks are performed by the workers on the work machine; a first opening portion connected to a first working space portion which is one of the plurality of working space portions; a second opening portion connected to a second working space portion that is another working space among the plurality of working space portions; and The cover portion is configured to be a first position that prevents the worker from accessing the first workspace portion through the first opening and allows the worker to access the second workspace portion through the second opening; a second position that prevents the worker from accessing the second work space portion through the second opening and allows the worker to access the first work space portion through the first opening, Work protection equipment.

2. 2. The work protection device according to claim 1, the case portion is provided with a support portion located between the first opening and the second opening on an outer surface of the case portion and configured to rotatably support one end of the cover portion; The cover portion is the other end moves in an arc around the support portion so as to move away from the case portion, a size to cover at least a portion of the first opening in the first position and to cover at least a portion of the second opening in the second position; Work protection equipment.

3. 3. The work protection device according to claim 2, The first opening is located above the second opening, the support portion rotatably supports one end of the cover portion between the first position and the second position so as to rotate the cover portion in a vertical direction; Work protection equipment.

4. 4. The work protection device according to claim 3, a cover holding portion that holds the cover portion at the first position relative to the case portion; Work protection equipment.

5. 3. The work protection device according to claim 2, The cover portion has a size to cover the first opening at the first position and to cover the second opening at the second position. Work protection equipment.

6. 3. The work protection device according to claim 2, The cover portion is a flat cover main body; a protrusion protruding from the cover main body on one side in a thickness direction of the cover main body so as to be inserted into the first opening at the first position; Work protection equipment.

7. 7. The work protection device according to claim 6, The protrusion is located on the one end side of the cover body. Work protection equipment.

8. 2. The work protection device according to claim 1, The case portion has a partition wall that separates the first working space portion from the second working space portion. Work protection equipment.

9. 9. The work protection device according to claim 8, The case portion is a first case portion having the first working space portion and the first opening portion; a second case portion adjacent to the first case portion and having the second working space portion and the second opening portion; a through hole that penetrates at least one of the first case portion and the second case portion so as to connect the first working space portion and the second working space portion; and At least a part of the work machine is disposed within the through hole. Work protection equipment.

10. A protective cover for protecting an operator working on a work machine at least partially covered by a case portion, A cover main body portion; a supported portion connected to the cover body portion and supported on an outer surface of the case portion so as to be movable between a first position and a second position; and The supported portion is The cover main body is supported relative to the case portion so that, at the first position, it prevents access to the first working space portion from the first opening of the case portion and is located at a position where the second working space portion is accessible from the second opening of the case portion, and at the second position, it prevents access to the second working space portion from the second opening and is located at a position where the first working space portion is accessible from the first opening. Protective cover.

11. The protective cover according to claim 10, The cover body portion has a size to cover the first opening at the first position and to cover the second opening at the second position. Protective cover.

Images