JP2014113666A - Posture holding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a posture holding tool capable of appropriately reducing loads to be applied to upper arm parts of an operator in the posture holding tool which is worn and used by the operator.SOLUTION: A posture holding tool comprises: body parts 2, 4 which are attached to the back part or the shoulder parts of an operator; and arm parts 5, 6 which are supported around right and left axes P1 of the body parts 2, 4 to be swung vertically and extended forward along upper arm parts of the operator. The arm parts 5, 6 are provided with: attachment parts 27, 29 which are attached to the upper arm parts of the operator; and lower receiving parts 37 which receive the elbow parts of the operator from the bottom and support them. The posture holding tool comprises a support mechanism which can be freely switched between an allowable state for allowing a movement of the arm parts 5, 6 accompanying a movement of the upper arm parts of the operator attached to the arm parts 5, 6, and a support state for supporting the arm parts 5, 6 at desired positions with respect to the body parts 2, 4.

Description

  The present invention relates to a posture holder for supporting an operator's upper arm during work with the upper arm raised by the operator, for example.

As what is worn and used by the worker, as disclosed in Patent Document 1, the upper portion is attached to the trunk portion of the worker, and the lower portion is attached to the foot portion of the worker. There is one in which an elastic material such as a rubber tube is connected over the lower part.
As a result, when the operator bends the upper body forward and downward, the elastic material is stretched and the elastic material tries to lift the upper body of the worker. FIG. As shown in FIG. 2, the elastic body helps the worker when the worker holds the upper body in a state bent forward and downward (forward bending).

JP 2005-192664 A JP 2009-284944 A

For example, in an orchard, a shelf that is slightly higher than the height of the worker is stretched, and fruit trees such as grapes are often cultivated on this shelf. In such an orchard, the worker often works on the fruit tree on the upper shelf with the forearm facing upward with the upper arm facing forward, and in this state the upper arm of the worker A heavy load is applied.
For example, when performing piping and wiring work in a building, similarly, the worker works on the piping and wiring on the upper ceiling with the upper arm facing forward and the forearm facing upward. In this state, a large load is applied to the upper arm of the worker.

Since Patent Document 1 reduces the load on the operator's lower back, there is an increasing demand for a posture holder that reduces the load on the upper arm of the worker as described above.
In this case, in Patent Document 1, the elastic material always acts in the direction of lifting the upper body of the worker. Therefore, when the structure of Patent Document 1 is applied to the upper arm portion of the worker, the elastic material becomes the worker's upper arm. It becomes the structure which acts always in the direction which lifts the upper arm part.
Thereby, in the structure which applied the structure of patent document 1 to an operator's upper arm part as mentioned above, an elastic material will be extended, so that an operator moves an upper arm part below, The lift force of an elastic material Therefore, the operator feels greater resistance as the upper arm is moved downward.

  An object of the present invention is to obtain a posture holder that can appropriately reduce the load applied to the upper arm of the worker in the posture holder that the worker wears and uses.

[I]
(Constitution)
The first feature of the present invention is that the posture holder is configured as follows.
A main body attached to the back or shoulder of the operator, and an arm that is supported swingably up and down around the left and right axis of the main body and extends forward along the upper arm of the operator ,
The arm part includes an attachment part that is attached to the upper arm part of the worker, and a lower receiving part that receives and supports the elbow part of the worker from below,
It is possible to switch between a permissible state that allows the operation of the arm portion accompanying the motion of the upper arm portion of the worker attached to the arm portion and a support state that supports the arm portion at a desired position with respect to the main body portion. Equipped with a support mechanism.

(Operation and effect of the invention)
[I] -1
According to the first feature of the present invention, in the state in which the worker wears the posture holder (the body is attached to the back or shoulder of the operator and the arm is attached to the upper arm of the worker) Depending on the allowable state of the mechanism, as the operator moves the upper arm portion upward and downward, the arm portion follows and swings upward and downward.
As a result, the arm portion does not become a resistance against the operation of the upper arm portion of the worker, and resistance such as an elastic material does not occur. Therefore, in the state where the worker wears the posture holder, the worker The work can be easily performed by moving the part upward and downward without a sense of incongruity.

[I] -2
According to the first feature of the present invention, in the state in which the worker wears the posture holder (the body is attached to the back or shoulder of the operator and the arm is attached to the upper arm of the worker) Depending on the support state of the mechanism, the operator deposits the upper arm portion into the arm portion, whereby the upper arm portion of the worker is supported by the arm portion.
Accordingly, as described in [Problems to be Solved by the Invention], for example, when an operator works on an upper fruit tree, piping, and wiring with the upper arm portion facing forward, the operator In the state where the upper arm portion is entrusted to the arm portion, the forearm portion is directed upward, so that work can be easily performed on the upper fruit tree, piping, and wiring.
In this case, in addition to providing the arm part with an attachment part attached to the upper arm part of the worker, the arm part is provided with a lower receiving part for receiving and supporting the elbow part of the worker from below, so that the support mechanism In this supporting state, the upper arm portion of the worker is stably supported by the arm portion (mounting portion and lower receiving portion), and even when the operator moves the forearm portion with the elbow portion as a fulcrum, The forearm can be moved while the upper arm is stably supported.

[I] -3
As described above, according to the first feature of the present invention, the upper arm portion of the worker can be stably supported, and the operator can easily move the upper arm portion upward and downward without a sense of incongruity. Since the forearm can be moved in a state where the upper arm is stably supported, it is possible to obtain a posture retainer with good workability that reduces the load on the upper arm of the worker.

[II]
(Constitution)
The second feature of the present invention is that the posture holder of the first feature of the present invention is configured as follows.
The arm portion is configured to be positioned on the lateral outer side of the upper arm portion of an operator, and the arm portion includes a U-shaped attachment portion that is open toward the left and right center side of the main body portion.
By inserting the upper arm portion of the worker into the attachment portion, the arm portion is configured to be attached to the upper arm portion of the worker.

(Operation and effect of the invention)
According to the second feature of the present invention, when the worker wears the posture holder, the arm portion is located laterally outside the upper arm portion of the worker, and is opened toward the left and right center side of the frame portion. A U-shaped attachment portion is provided on the arm portion.
As a result, when attaching the upper arm part of the worker to the arm part, the operator moves the upper arm part laterally outward and inserts it into the attachment part of the arm part, so that the upper arm part of the worker can be easily attached to the arm part. Therefore, it is possible to obtain a posture holding tool with good workability.

[III]
(Constitution)
The third feature of the present invention is that the posture holder of the second feature of the present invention is configured as follows.
The lower receiving portion is provided in a lower mounting portion located below the upper arm portion of the worker in the mounting portion.

(Operation and effect of the invention)
The lower mounting part located on the lower side of the U-shaped mounting part and the lower receiving part for receiving and supporting the worker's elbow part from below are both located below the upper arm part and the elbow part of the worker. To do.
Thus, as in the third feature of the present invention, by providing the lower receiving portion in the lower mounting portion of the mounting portion, the lower receiving portion can be easily provided in the arm portion, and the structure is simplified. Is advantageous.

[IV]
(Constitution)
A fourth feature of the present invention is that the posture holder of the second or third feature of the present invention is configured as follows.
The upper arm portion of the worker in the attachment portion is operated so that the support mechanism operation portion that is operated manually by the operation of the support mechanism is operated by the worker's forearm portion by a bending operation of the worker's elbow portion. It is provided in the upper mounting part located on the upper side.

(Operation and effect of the invention)
In a state in which the worker wears the posture holder (the body is attached to the back or shoulder of the worker and the arm is attached to the upper arm of the worker), the forearm of the worker is relatively free. Can move.
According to the fourth feature of the present invention, when the support mechanism operation unit that operates the support mechanism described in the preceding item [I] -1 or 2 is provided, the support mechanism operation unit is operated by the operator's forearm by the bending operation of the operator's elbow. As described above, the support mechanism operating section is provided in the upper mounting section located above the upper arm section of the worker in the mounting section.

Thereby, in a state where the operator deposits the upper arm portion in the arm portion in the support state of the support mechanism, the operator can easily operate the support mechanism operation portion by the forearm portion that can be moved relatively freely. Therefore, it is possible to obtain a posture holder having good workability.
As described in [I] -2, 3 above, for example, when an operator works on an upper fruit tree, piping, and wiring with the upper arm portion facing forward, the operator moves the upper arm portion to the arm portion. The forearm is turned upward with the left hand. In this state, when the worker moves the forearm to the upper arm side (rear) with the elbow as a fulcrum, the upper arm of the U-shaped mounting portion is positioned above the upper arm of the worker. Therefore, the support mechanism operation unit can be easily operated by the operator's forearm.

It is the perspective view which looked at the state where the worker wore the posture holder from the front. It is the perspective view which looked at the attitude | position holder from back. It is a side view which shows the state which the operator mounted | wore the attitude | position holder. It is the disassembled perspective view which looked at the lower frame part of the attitude | position holder, the vertical frame part, the 1st and 2nd horizontal frame part, the construction member, the cover, etc. from back upper direction. It is the disassembled perspective view which looked at the vertical frame part, the 1st and 2nd horizontal frame part, the erection member, the support member, etc. of the posture holder from back upper part. It is the perspective view which looked at the board | substrate of the attitude | position holder, the support mechanism, etc. from the front upper direction. It is the disassembled perspective view which looked at the 2nd horizontal frame part, the board | substrate, the 1st arm part, the support mechanism, etc. of the attitude | position holder from front upper direction. In a support mechanism, it is a side view showing the state where (a) a stopper is located in an operation position, and (b) the state where a stopper is located in a release position. It is the perspective view which looked at the 1st and 2nd arm part of a posture maintenance tool from back upper direction. It is the perspective view which looked at the 1st and 2nd arm part of a posture holder from the front upper part.

[1]
As shown in FIGS. 1, 2, and 4, the posture holder includes a lower frame portion 1 (corresponding to the main body portion), a right and left vertical frame portion 2 (corresponding to the main body portion), and a right and left first horizontal frame portion. 3 (corresponding to the main body part), right and left second horizontal frame parts 4 (corresponding to the main body part), right and left first arm parts 5 (corresponding to the arm parts), right and left second arm parts 6 (Corresponding to the arm), right and left support mechanism 7 (see FIG. 7), right and left belt 8 for fixing to the waist of the operator, pad 9, right for fixing to the shoulder of the operator And the left belt 10 or the like.
Below, the structure of each part is demonstrated. In this case, “upper”, “lower”, “right”, “left”, “front”, and “rear” in the description are the top, bottom, right, and left as viewed from the operator when the operator is wearing the posture holder. , Before, after.

[2]
The lower frame part 1 and the vertical frame part 2 will be described.
As shown in FIGS. 1, 2, and 4, the lower frame portion 1 is made of sheet metal and has a box shape, and a battery 18 that supplies power to a support mechanism 7 (solenoid 23) to be described later is attached. A cloth belt 8 for fixing to the waist is attached to the right and left lateral portions of the lower frame portion 1. A cover 15 made of synthetic resin is attached to the rear side portion of the lower frame portion 1. The cover 15 attaches the battery 18 and the belt 8 to the lower frame portion 1, and connects the vertical frame portion 2 to the lower frame portion 1. The connecting part is covered.

  As shown in FIGS. 1, 2, and 4, the vertical frame portion 2 made of sheet metal is connected to the right and left horizontal portions of the lower frame portion 1 at a predetermined interval in the left-right direction and extends upward. A plate-like installation member 11 made of sheet metal (made of a leaf spring) is connected over the upper portions of the right and left vertical frame portions 2.

  As shown in FIGS. 1 and 2, a pad 9 having a rectangular shape in front view is attached across the lower frame portion 1, the vertical frame portion 2, and the bridging member 11. The right belt 10 is attached over the upper part (pad 9) of the right vertical frame 2 and the belt 8, and the left belt 10 is attached over the upper part (pad 9) of the left vertical frame 2 and the belt 8. It has been.

[3]
Next, the first horizontal frame portion 3 and the second horizontal frame portion 4 will be described.
As shown in FIGS. 4 and 5, the first metal horizontal frame portion 3 is connected to the vertical frame portion 2 by bolts 13 and extends rightward and leftward outward. A vertical hole 2 a is formed in the upper part of the vertical frame part 2, and a bolt 13 is inserted and tightened into the long hole 2 a of the vertical frame part 2, so that the first horizontal frame part 3 with respect to the vertical frame part 2 is tightened. The position can be adjusted in the vertical direction along the long hole 2 a of the vertical frame portion 2.

  As shown in FIGS. 4 and 5, a block-shaped support member 14 made of hard synthetic resin is attached to a base portion 4 a of a second horizontal frame portion 4 made of sheet metal, and a base portion 4 a of the second horizontal frame portion 4. The support member 14 is connected to the first horizontal frame portion 3 by a bolt 16. A front portion 4c of the second horizontal frame portion 4 is bent from the base portion 4a of the second horizontal frame portion 4 and extends forward.

As shown in FIGS. 4 and 5, elongated holes 4 b and 14 a in the left-right direction are formed in the base portion 4 a and the support member 14 of the second horizontal frame portion 4, and the bolts 16 are connected to the second horizontal frame portion 4 and the support member 14. Are inserted into the long holes 4b and 14a and tightened.
Accordingly, the position of the second horizontal frame portion 4 with respect to the first horizontal frame portion 3 can be adjusted in the left-right direction (lateral direction) along the long holes 4 b and 14 a of the second horizontal frame portion 4 and the support member 14. Thus, the positions of the first and second arm portions 5 and 6 (supported by the second horizontal frame portion 4) with respect to the first horizontal frame portion 3 can be adjusted in the left-right direction (lateral direction).

  As shown in FIGS. 2 and 4, a synthetic resin cover 17 is attached to the rear side portion of the first horizontal frame portion 3. The cover 17 covers the connecting portion of the bridging member 11 to the vertical frame portion 2, the base portion 4 a of the second horizontal frame portion 4, and the support member 14.

[4]
Next, the 1st arm part 5 is demonstrated.
As shown in FIGS. 6 and 7, a substrate 19 is connected to the front portion 4 c of the second horizontal frame portion 4, and concentric openings 4 d, concentric with the front portion 4 c of the second horizontal frame portion 4 and the substrate 19. 19 a is formed, and a convex portion 19 b is formed on the inner peripheral portion of the opening 19 a of the substrate 19.

  As shown in FIGS. 6 and 7, the disc portion 5 b is attached to the base portion 5 a of the first arm portion 5, and the disc portion 5 b of the first arm portion 5 is the front portion 4 c of the second horizontal frame portion 4. The disc portion 5b of the first arm portion 5 is in contact with the convex portion 19b of the substrate 19 by being inserted into the openings 4d and 19a of the substrate 19 from the inside.

  As shown in FIGS. 6 and 7, a ring-shaped substrate 5c and a support member 12 are provided, and a bolt 38 is connected to a base portion 5a and a disc portion 5b of the first arm portion 5, a substrate 5c, and a support member 12 (described later). It is clamped over the long hole 12b), and the outer peripheral portion of the opening portion 19a and the convex portion 19b of the substrate 19 are sandwiched between the disc portion 5b of the first arm portion 5 and the substrate 5c.

  As a result, as shown in FIGS. 2, 3, and 7, the first arm portion 5 swings up and down around the left and right axis P <b> 1 of the front portion 4 c of the second horizontal frame portion 4 and the openings 4 d and 19 a of the substrate 19. It is supported freely. Since the outer peripheral portion of the opening 19a and the convex portion 19b of the substrate 19 are sandwiched between the disc portion 5b and the substrate 5c of the first arm portion 5, the first arm portion 5 becomes the second horizontal frame portion 4 and the substrate. I can't deviate from 19.

[5]
Next, the support mechanism 7 will be described.
As shown in FIGS. 6 and 7, a tongue-like convex portion 12 a is fixed to the support member 12, and an arcuate length is formed on a portion of the support member 12 on the circumference centering on the left and right axis P <b> 1. A hole 12b is formed. A support arm 20 is swingably supported around the left and right axis P2 of the substrate 19, and a rod-like stopper 21 is supported vertically in the openings of the upper and lower support portions 20a and 20b protruding from the support arm 20. Thus, the stopper 21 is located on the rear side of the support member 12.

As shown in FIGS. 6 and 7, the stopper 21 includes a tapered tip portion 21a, a knob 21b for manual operation, and a screw portion 21c. A female screw is formed in the opening of the upper support portion 20a of the support arm 20, and the screw portion 21c of the stopper 21 is engaged with the female screw of the upper support portion 20a of the support arm 20. The knob 21b protrudes upward (see FIGS. 1 and 2).
Accordingly, by rotating the stopper 21 with the knob 21 b of the stopper 21, the stopper 21 (tip portion) in the support arm 20 is caused by the screw portion 21 c of the stopper 21 and the female screw of the upper support portion 20 a of the support arm 20. The position of 21a) can be changed vertically.

  As shown in FIGS. 6 and 7, the solenoid 23 is fixed to the substrate 19, and the linkage link 24 is connected across the lower portion of the support arm 20 and the operation portion 23 a of the solenoid 23. The solenoid 23 is supplied with electric power from the battery 18 provided in the lower frame portion 1, and is operated by an operation signal from a limit switch (not shown) of an operation unit 31 (corresponding to a support mechanism operation unit) described later. 23 is energized, and the operation portion 23a of the solenoid 23 is contracted to the left of the drawing from the position shown in FIG. A spring 22 is connected across the substrate 19 and the lower part of the support arm 20, and the lower part of the support arm 20 is biased forward (to the right in FIG. 6) by the spring 22.

As shown in FIGS. 6 and 8A, when the solenoid 23 is not energized, the operating portion 23a of the solenoid 23 is positioned at the position shown in FIG. 8), the support arm 20 and the stopper 21 are located at the support position shown in FIG. 8A.
Thereby, in the support position of the support arm 20 and the stopper 21, the convex part 12a of the support member 12 contacts the front-end | tip part 21a of the stopper 21 from the lower side, and the downward load of the 1st arm part 5 is supported. Thus, the downward movement of the first arm portion 5 is prevented (supported state).

As shown in FIG. 8B, in the energized state of the solenoid 23, the operating portion 23a of the solenoid 23 contracts to the position shown in FIG. 8B against the biasing force of the spring 22, and the support arm 20 is moved. The support arm 20 and the stopper 21 are positioned at the permissible position shown in FIG. 8B by swinging backward about the left and right axis P2.
Thereby, in the permissible position of the support arm 20 and the stopper 21, the convex portion 12 a of the support member 12 does not contact the tip end portion 21 a of the stopper 21, and the downward movement of the first arm portion 5 is permitted. (Acceptable state).

  As shown in FIGS. 6 and 7, the support mechanism 7 is configured by the support member 12 (convex portion 12 a), the stopper 21, the solenoid 23, and the like. As shown in FIGS. 1 and 2, a synthetic resin cover 25 is attached to the lateral outer side of the substrate 19, and the cover 25 supports the support member 12 (convex portion 12 a), the support arm 20, the stopper 21, and the spring 22. And the solenoid 23 and the like are covered. As shown in FIG. 7, a synthetic resin cover 39 is attached to the inner side of the base portion 5 a of the first horizontal frame portion 5.

[6]
Next, the 2nd arm part 6 is demonstrated.
As shown in FIGS. 9 and 10, rail portions 6 a are formed on the upper and lower edges of the second arm portion 6, and the upper and lower rail portions 6 a of the second arm portion 6 are formed on the first arm portion 5. The second arm portion 6 is supported so as to be slidable along the longitudinal direction (front-rear direction) of the first arm portion 5.

As shown in FIGS. 9 and 10, a bolt 26 with a knob for fixing the second arm portion 6 to the first arm portion 5 at a desired mounting position is provided at the front end portion of the first arm portion 5, and the knob A cover 35 is provided at the front end of the first arm portion 5 so as to cover the attachment portion of the attachment bolt 26 to the first arm portion 5 from the inside.
Thus, by adjusting the position of the second arm part 6 with respect to the first arm part 5 in the front-rear direction, the position of the second arm part 6 with respect to the first horizontal frame part 3 can be adjusted in the front-rear direction.

  As shown in FIGS. 3, 9, and 10, a vertical mounting portion 27 in the vertical direction is provided at the front portion of the second arm portion 6, and cantilevered from the bottom of the vertical mounting portion 27 to the inner side. A mounting portion 28 is provided. A triangular reinforcing portion 36 is connected in plan view across the rail portion 6a and the lower mounting portion 28 below the second arm portion 6, and a lower receiving portion 37 extends forward from the lower mounting portion 28. Yes. A pad 33 is attached to the lateral inner side of the vertical attachment portion 27, and a pad 34 is attached across the upper surface portion of the lower attachment portion 28 and the upper surface portion of the lower receiving portion 37.

  As shown in FIGS. 3, 9, and 10, an L-shaped upper mounting portion 29 is swingably supported around the longitudinal axis P <b> 3 at the upper portion of the vertical mounting portion 27, and is supported on the lower surface portion of the upper mounting portion 29. A pad 32 is attached, and a spring 30 for biasing the upper attachment portion 29 downward is provided. The upper mounting portion 29 cannot swing downward from the position shown in FIGS. 9 and 10 by contact with the vertical mounting portion 27, but can swing upward against the spring 30. Thus, the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29 constitute a U-shaped (C-shaped) mounting portion opened toward the left and right center side.

  As shown in FIGS. 9 and 10, the operation unit 31 is supported so as to be swingable around the oblique axis P4 at the front portion of the upper mounting portion 29, and the operation unit 31 is moved downward by a spring (not shown). It is energized. The operating portion 31 cannot swing downward from the position shown in FIG. 10 by the stopper portion (not shown) of the upper mounting portion 29, and can swing upward from the position shown in FIG. 10 against the spring. A limit switch (not shown) for detecting the upward swing of the operation unit 31 is provided in the upper mounting portion 29.

[7]
Next, mounting of the posture holder will be described.
As shown in FIGS. 1 and 3, the worker carries a posture holding tool on his / her back, attaches a belt 10 to the shoulder portion of the worker, applies a pad 9 to the back portion of the worker, and lower frame portion 1. Is applied to the operator's waist. Since the belt 8 is provided with a hook-and-loop fastener (not shown) (trade name / magic tape), the operator wraps the belt 8 around the waist of the worker and works the lower frame portion 1 and the belt 8 with the hook-and-loop fastener. Attach to the waist of the person.

  Thus, the lower frame portion 1 and the belt 8 are attached to the operator's waist, the vertical frame portion 2 extends upward along the back portion of the operator from the lower frame portion 1, and the first from the vertical frame portion 2. The second horizontal frame portions 3 and 4 are extended laterally along the shoulders of the operator, and the lower frame portion 1, the vertical frame portion 2, the first and second horizontal frame portions 3. , 4 are attached to the operator's back (torso).

  Next, since the first and second arm portions 5 and 6 are positioned laterally outside the upper arm portion of the worker, the upper mounting portion 29 is operated upward, and the upper arm portion of the worker is moved to the vertical mounting portion 27. Then, it is inserted into the lower mounting portion 28 and the upper mounting portion 29, and the upper mounting portion 29 is operated downward. Thereby, the 1st and 2nd arm parts 5 and 6 will be in the state attached to the operator's upper arm part.

In this case, as shown in FIGS. 1 and 3, the second horizontal frame portion 4 (left and right axis P1) is positioned at substantially the same height as the shoulder portion of the worker, and the lateral outer side of the shoulder portion of the worker. The position of the first horizontal frame portion 3 attached to the vertical frame portion 2 is adjusted in the vertical direction in advance so that the second horizontal frame portion 4 is positioned with respect to the first horizontal frame portion 3. The mounting position is adjusted in the left-right direction (lateral direction) in advance (see [3] in the previous section).
The operator's elbow is positioned slightly in front of the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29, and is positioned on the lower receiving portion 37 so that the operator's forearm can be bent and extended without any trouble. In addition, the mounting position of the second arm portion 6 with respect to the first horizontal frame portion 3 is adjusted in the front-rear direction in advance (see [6] above).

  The first and second arm portions in a state where the worker is not wearing the posture holding tool (the upper arm portion of the worker is not inserted into the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29). The connecting state of the bridging member 11 to the right and left vertical frame portions 2 is set so that the positions 5 and 6 become obliquely closer to each other as they move away from the second horizontal frame portion 4.

  As a result, as shown in FIGS. 1 and 3, the first and second arm portions 5 and 6 are lightly pressed against the upper arm portion of the worker while the operator is facing the upper arm portion forward. Therefore, a sense of unity between the upper arm portion of the worker and the first and second arm portions 5 and 6 (the vertical mounting portion 27, the lower mounting portion 28 and the upper mounting portion 29) is increased. It becomes difficult to remove from the vertical mounting portion 27, the lower mounting portion 28 and the upper mounting portion 29.

[8]
Next, the operation of the posture holding tool (the upward and downward movements of the first and second arm portions 5 and 6 in the range above the desired position) will be described.
The state shown in FIGS. 1, 3, 6, and 8 (a) is a state in which the support arm 20 and the stopper 21 are located at the support position when the solenoid 23 is not energized. The (tip portion 21a) is in the uppermost position (the bolt 38 is fixed at the center position of the long hole 12b of the support member 12).

  In the state shown in FIGS. 6 and 8A, the convex portion 12a of the support member 12 comes into contact with the distal end portion 21a of the stopper 21 from below, so that the substrate 19 and the first and second arm portions 5, 6 are in contact with each other. A desired position (a position where the convex portion 12a of the support member 12 contacts the front end portion 21a of the stopper 21 from the lower side) is positioned at the first position A1 in which is substantially straight.

In the state shown in FIGS. 6 and 8 (a), the operator deposits the upper arm portion on the second arm portion 6 (vertical mounting portion 27, lower mounting portion 28 and upper mounting portion 29, lower receiving portion 37). The downward load of the first and second arm portions 5 and 6 is supported.
In this case, since the upper arm portion is supported by the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29, the operator's elbow is also supported by the lower receiving portion 37. The upper arm portion is stably supported by the second arm portion 6 (the vertical attachment portion 27, the lower attachment portion 28, the upper attachment portion 29, and the lower receiving portion 37). Even when the operator moves the forearm with the elbow as a fulcrum, the upper arm is stably supported by the second arm 6 because the worker's elbow is supported by the lower receiving portion 37. The forearm can be moved in a standing state.

  As a result, the upper arm portion of the worker is supported at a desired position (first position A1) by the first and second arm portions 5 and 6, and the worker can move the upper arm portion (first and second arm portions 5). , 6) cannot be moved downward beyond the desired position (first position A1) (the first and second arm portions 5 and 6 are supported and desired at the desired position (first position A1)). (Corresponding to a supporting state in which the first and second arm portions 5 and 6 are prevented from moving downward beyond the first position A1).

  As shown in FIG. 6 and FIG. 8A, the convex portion 12a of the support member 12 is spaced downward from the tip end portion 21a of the stopper 21 in a range above the desired position (first position A1). In the range above the position (first position A1), the upper arm portions (first and second arm portions 5 and 6) of the worker are allowed to move upward and downward.

In this case, even if the operator moves the upper arm portion upward, the upper attachment portion 29 opens upward, and the upper arm portion of the worker moves from the vertical attachment portion 27, the lower attachment portion 28, the upper attachment portion 29, and the lower receiving portion 37. The urging force of the spring 30 shown in FIG. 9 is set so that the first and second arm portions 5 and 6 follow the upper arm portion of the worker without coming off upward.
As a result, in the range above the desired position (first position A1), the operator can easily move the upper arms (first and second arms 5 and 6) upward and downward without discomfort. (As the operator moves the upper arm portion upward and downward, the first and second arm portions 5 and 6 swing upward and downward).

  Next, as shown in FIG. 6 and FIG. 8A, when the operator moves the upper arm portion downward and the first and second arm portions 5 and 6 reach a desired position (first position A1), the support is performed. The convex part 12a of the member 12 contacts the front end part 21a of the stopper 21 from the lower side, and the first and second arm parts 5 and 6 are positioned at a desired position (first position A1) as described above. The operator returns to the state where the upper arm portion is deposited in the first and second arm portions 5 and 6.

  As shown in FIGS. 6 and 8A, the first and second arm portions 5 and 6 are positioned at desired positions (first position A1), and the operator moves the upper arm portion to the first and second arm portions. 5 and 6, loads applied to the first and second arm portions 5 and 6 from the upper arm portion of the worker are the first arm portion 5, the first and second horizontal frame portions 3 and 4, and the vertical frame. It is transmitted to the lower frame part 1, the belt 8 and the pad 9 via the part 2 and the belt 10, and is stably received and supported by the operator's waist, back and shoulders.

  In particular, by attaching the belt 10 to the shoulder portion of the worker, the positions of the vertical frame portion 2 and the first horizontal frame portion 3 in the left-right direction can be determined on the worker's back portion (the vertical frame on the worker's back portion). Since the vertical frame portion 2 and the first horizontal frame portion 3 do not move away from the operator's back, the worker 2 and the first horizontal frame portion 3 cannot move in the horizontal direction. The load applied to the first and second arm portions 5 and 6 from the upper arm portion is transmitted to the lower frame portion 1, the belt 8 and the pad 9 without waste.

[9]
Next, the operation (change of a desired position) of the posture holder will be described.
As shown in FIGS. 6 and 8A, in the state where the bolt 38 is fixed at the center position of the long hole 12b of the support member 12 and the support arm 20 and the stopper 21 are positioned at the support position, When the stopper 21 (tip portion 21a) is positioned at the uppermost position with respect to 20, the substrate 19 and the first and second arm portions 5 and 6 are in a desired position at the first position A1 where the first and second arm portions 5 and 6 are substantially straight. Is located.

  6 and 8A, the knob 21b of the stopper 21 is rotated to change the position of the stopper 21 (tip portion 21a) in the support arm 20 in the downward direction. be able to. Thus, when the position of the stopper 21 (tip portion 21a) in the support arm 20 is changed downward, the desired position is changed upward from the first position A1, and the stopper 21 (tip end) with respect to the support arm 20 is changed. When the part 21a) is positioned at the lowest position, the desired position is the second position A2.

  As described above, in a state where the bolt 38 is fixed at the center position of the long hole 12b of the support member 12, the knob 21b of the stopper 21 is rotated to rotate the stopper 21 (tip portion 21a) of the support arm 20. By changing the position in the vertical direction, the desired position can be changed within the range of the first and second positions A1 and A2.

  In this case, as shown in FIG. 1 and FIG. 3, the worker is wearing the posture holder (the state where the worker's upper arm is inserted into the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29. ), The operator can turn the knob 21b of the left stopper 21 with the right hand by bending the right forearm portion diagonally left rearward, and bend the left forearm portion diagonally right rear. Thus, the knob 21b of the right stopper 21 can be rotated with the left hand.

  As shown in FIGS. 6 and 8A, the stopper 21 (tip portion 21 a) is positioned at the uppermost position with respect to the support arm 20, and the convex portion 12 a of the support member 12 is lowered to the tip portion 21 a of the stopper 21. In the state of contact from the side, the bolt 38 is slightly loosened, the first and second arm portions 5 and 6 are moved downward along the long hole 12b of the support member 12, and the bolt 38 is moved to the length of the support member 12. It is fixed at one end of the hole 12b.

  As a result, as shown in FIG. 8A, the desired position can be changed from the first position A1 to the lower third position A3. In this state, the knob 21b of the stopper 21 is rotated. The desired position can be changed within the range of the first and third positions A1 and A3 by changing the position of the stopper 21 (tip portion 21a) in the support arm 20 in the vertical direction. In this case, the bolt 38 can be fixed at an intermediate position between the center position of the long hole 12b of the support member 12 and one end.

  As shown in FIGS. 6 and 8A, the stopper 21 (tip portion 21 a) is positioned at the uppermost position with respect to the support arm 20, and the convex portion 12 a of the support member 12 is lowered to the tip portion 21 a of the stopper 21. In the state of contact from the side, the bolt 38 is slightly loosened, the first and second arm portions 5 and 6 are moved upward along the long holes 12 b of the support member 12, and the bolt 38 is moved to the length of the support member 12. The other end of the hole 12b is fixed.

As a result, as shown in FIG. 8A, the desired position can be changed from the first position A1 to the upper second position A2, and the knob 21b of the stopper 21 is rotated in this state. By changing the position of the stopper 21 (tip portion 21a) in the support arm 20 in the vertical direction, the desired position is within the range of the second and fourth positions A1, A4 (positions above the second position A2). Can be changed. In this case, the bolt 38 can be fixed at an intermediate position between the center position of the long hole 12b of the support member 12 and the other end.
By rotating the knob 21b of the stopper 21 as described above and changing the fixing position of the elongated hole 12b of the support member 12 in the bolt 38 separately on the right and left, the desired positions on the right and left are different. It is also possible to set the position.

[10]
Next, an operation of the posture holding tool (downward movement of the first and second arm portions 5 and 6 beyond a desired position) will be described.
As shown in FIGS. 1 and 3, in a state where the worker wears the posture holding tool (a state where the upper arm portion of the worker is inserted into the vertical mounting portion 27, the lower mounting portion 28 and the upper mounting portion 29), When the operator bends the forearm portion to the upper arm portion side (backward) (by bending operation of the elbow portion of the operator), the operation portion 31 can be operated upward by the operator's forearm portion.

  In this case, as shown in FIGS. 1 and 3, the upper arm portion of the worker is supported by the vertical mounting portion 27, the lower mounting portion 28, and the upper mounting portion 29, and the worker's elbow portion is also received by the lower receiving portion. Since it is supported by the portion 37, the upper arm portion of the worker is stably supported by the second arm portion 6, and the worker can bend the forearm portion stably toward the upper arm portion side. The forearm portion can stably operate the operation portion 31 upward.

  As shown in FIG. 8B, when the upward swing of the operation unit 31 is detected by the limit switch, the solenoid 23 is energized, and the operation unit 23 a of the solenoid 23 is resisted against the biasing force of the spring 22. 8 contracts to the position shown in FIG. 8B, the support arm 20 swings backward around the left and right axis P2, and the support arm 20 and the stopper 21 are located at the allowable position shown in FIG. 8B. . When the operation unit 31 returns to the original position, the solenoid 23 is deenergized, and the support arm 20 and the stopper 21 return to the support position shown in FIG.

  As shown in FIGS. 1 and 3, the operator bends the right forearm portion diagonally left rearward and operates forward with the knob 21 b of the left stopper 21 with the right hand, thereby biasing the spring 22. The right support arm 20 and the stopper 21 can be operated to the permissible positions shown in FIG. 8B against the solenoid 23. When the right hand is released from the knob 21b of the left stopper 21, The support arm 20 and the stopper 21 return to the support position shown in FIG.

  Similarly to the above, by bending the left forearm portion diagonally right rearward and operating the left hand with the knob 21b of the right stopper 21 against the urging force of the spring 22 and the solenoid 23, The right support arm 20 and the stopper 21 can be operated to the allowable positions shown in FIG. 8B. When the left hand is released from the knob 21b of the right stopper 21, the right support arm 20 and the stopper 21 are illustrated. Return to the support position shown in FIG.

  As a result, as shown in FIG. 8B, the convex portion 12a of the support member 12 does not contact the tip end portion 21a of the stopper 21 at the allowable position of the support arm 20 and the stopper 21, and the desired position is set. The downward movement of the upper arm portion (first and second arm portions 5 and 6) of the worker beyond is allowed (allowable state).

  As shown in FIG. 8B, after the operator moves the upper arm portion (first and second arm portions 5, 6) downward beyond a desired position, the support arm 20 and the stopper 21 are moved to the position shown in FIG. Even if it returns to the support position shown to a), since the convex part 12a of the support member 12 is located in the position away from the front-end | tip part 21a of the stopper 21, it is an operator's upper arm part (in the range below a desired position) ( The upward and downward movements of the first and second arm portions 5, 6) are allowed.

In the above-described state, when the operator moves the upper arm portion (first and second arm portions 5, 6) upward beyond a desired position, the convex portion 12a of the support member 12 moves downward, and the support position is changed. The stopper 21 moves downward from the tip 21a of the stopper 21 while pushing the tip 21a backward (leftward in FIG. 8A), and the support arm 20 and the stopper 21 return to the support position.
Thereafter, even if the operator tries to move the upper arm portion (first and second arm portions 5 and 6) downward beyond a desired position, as shown in FIG. 12a comes into contact with the front end portion 21a of the stopper 21 from the lower side and returns to the state described in the preceding item [9].

[First Alternative Embodiment of the Invention]
Instead of the support mechanism 7 in the above-mentioned [Mode for Carrying Out the Invention], the support mechanism 7 may be configured as follows.
A plurality of gear tooth-like engaged portions and a claw body that engages with one of the engaged portions constitute a one-way mechanism (ratchet mechanism), and the second horizontal frame portion 4 and the first arm A unidirectional mechanism (ratchet mechanism) is provided between the unit 5 and a claw body of the unidirectional mechanism (ratchet mechanism) is forcibly separated from the engaged portion, and a solenoid operated by the operation unit 31 is provided. .

The downward movement of the first and second arm portions 5 and 6 is prevented by the one-way mechanism (ratchet mechanism), and the first and second arm portions 5 and 6 are supported at desired positions ( Support state), upward movement of the first and second arm portions 5 and 6 is allowed (allowed state).
When the claw body of the one-way mechanism (ratchet mechanism) is forcibly separated from the engaged portion by the solenoid, the one-way mechanism (ratchet mechanism) becomes inoperative, and the first and second arm parts 5, 6 is allowed to move upward and downward (allowed state).

  Thereby, a support mechanism is comprised by a one-way mechanism (ratchet mechanism) and a solenoid. In this case, the solenoid is abolished and the operation unit 31 and the claw body of the one-way mechanism (ratchet mechanism) are mechanically linked by a wire (not shown), a linkage link (not shown), or the like. Good.

[Second Embodiment of the Invention]
Instead of the support mechanism 7 of the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention], the support mechanism 7 may be configured as shown below.
The one-way mechanism (ratchet mechanism) described in [First Alternative Embodiment of the Invention] is fixed to the second horizontal frame portion 4, and the space between the one-way mechanism (ratchet mechanism) and the first arm portion 5 is fixed. In addition, an electrically operated connection mechanism (clutch mechanism) is provided, and the connection mechanism (clutch mechanism) can be switched between the connected state and the disconnected state by the operation unit 31.

  When the connection mechanism (clutch mechanism) is operated to the connected state, the one-way mechanism (ratchet mechanism) and the first arm portion 5 are connected to function the one-way mechanism (ratchet mechanism). The downward movement of the first and second arm portions 5 and 6 is prevented by the one-way mechanism (ratchet mechanism), and the first and second arm portions 5 and 6 are supported at a desired position (support State), the upward movement of the first and second arm portions 5 and 6 is allowed (allowable state).

  When the connection mechanism (clutch mechanism) is operated in the disconnected state, the one-way mechanism (ratchet mechanism) and the first arm portion 5 are disconnected, and the one-way mechanism (ratchet mechanism) does not function. The upward and downward movements of the first and second arm portions 5 and 6 are allowed (allowed state).

  Thereby, a support mechanism is comprised by the one-way mechanism (ratchet mechanism) and the connection mechanism (clutch mechanism). In this case, the connection mechanism (clutch mechanism) is configured to be mechanically connected and disconnected, and the operation unit 31 and the connection mechanism (clutch mechanism) are connected to a wire (not shown) or a link link (not shown). Or the like).

[Third Another Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] [Second Another Mode for Carrying Out the Invention], the upper mounting portion 29 is swingably supported around the longitudinal axis P3. Instead, the upper mounting portion 29 may be fixed to the vertical mounting portion 27 so as not to swing.
In this case, the distance between the open portions between the upper mounting portion 29 and the lower mounting portion 38 is set to be slightly larger so that the operator can place the upper arm portion in the vertical mounting portion 27, the lower mounting portion 28 and the upper mounting portion 29. You may comprise so that it can put in easily.

[Fourth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Mode of Carrying Out the Invention] to [Third Another Mode of Carrying Out the Invention], the operating portion 31 is not provided in the upper mounting portion 29 but is mounted vertically. A support arm (not shown) extending from the intermediate portion of the portion 27, the lower mounting portion 28, the lower receiving portion 37 and the second arm portion 6 may be provided with the operation portion 31.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Fourth Another Mode for Carrying Out the Invention], the lower mounting portion 28 and the lower receiving portion 37 are integrally configured. Instead of this, the support arm (not shown) extending from the intermediate portion of the vertical attachment portion 27, the upper attachment portion 29, and the second arm portion 6 may be provided with the lower receiving portion 37.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] to [Fifth Alternative Embodiment of the Invention], the operation unit 31 and the solenoid 23 may be omitted.
With this configuration, the position of the support arm 20 (the tip portion 21a of the stopper 21) is changed only by the knob 21b of the stopper 21, and the tip portion 21a of the stopper 21 and the convex portion 12a of the support member 12 are brought into contact with each other. A switching operation is performed between a supporting state corresponding to the contact state and an allowable state where no contact is made.

[Seventh Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Form of the Invention] to [Sixth Different Form of the Invention], the lower frame part 1, the vertical frame part 2, the first and second horizontal parts. Rather than attaching the frame parts 3 and 4 to the back part (body part) of the operator, the lower frame part 1 and the vertical frame part 2 are abolished, and the first and second horizontal frame parts 3 and 4 are removed from the operator. You may comprise so that it may attach to a shoulder part and the 1st and 2nd arm parts 5 and 6 may be attached to an operator's upper arm part.

[Eighth Embodiment of the Invention]
In the above-mentioned [Description of Embodiments] [First Alternative Embodiment of the Invention] to [Seventh Alternative Embodiment of the Invention], the first and second horizontal frame portions 3 are provided on both the right and left sides. 4. Instead of providing the first and second arm portions 5, 6 etc., the first and second horizontal frame portions 3, 4, the first and second arm portions 5, 6 etc. are provided only on the right or left. You may comprise.

  It is used by an operator when working in an orchard or building, and can be applied to a posture holder that reduces the load on the upper arm of the operator.

1, 2, 3, 4 Body portion 5, 6 Arm portion 7 Support mechanism 27, 28, 29 Mounting portion 28 Lower mounting portion 29 Upper mounting portion 31 Support mechanism operating portion 37 Lower receiving portion P1 Left and right axis

Claims (4)

A main body attached to the back or shoulder of the operator, and an arm that is supported swingably up and down around the left and right axis of the main body and extends forward along the upper arm of the operator ,
The arm part includes an attachment part that is attached to the upper arm part of the worker, and a lower receiving part that receives and supports the elbow part of the worker from below,
It is possible to switch between a permissible state that allows the operation of the arm portion accompanying the motion of the upper arm portion of the worker attached to the arm portion and a support state that supports the arm portion at a desired position with respect to the main body portion. Posture holding tool equipped with a special support mechanism. The arm portion is configured to be positioned on the lateral outer side of the upper arm portion of an operator, and the arm portion includes a U-shaped attachment portion that is open toward the left and right center side of the main body portion.
The posture holder according to claim 1, wherein the arm portion is attached to the upper arm portion of the worker by inserting the upper arm portion of the worker into the attaching portion.   The posture holder according to claim 2, wherein the lower receiving portion is provided in a lower mounting portion that is positioned below the upper arm portion of the worker in the mounting portion.   The upper arm portion of the worker in the attachment portion is operated so that the support mechanism operation portion that is operated manually by the operation of the support mechanism is operated by the worker's forearm portion by a bending operation of the worker's elbow portion. The posture holding tool according to claim 2 or 3, wherein the posture holding tool is provided in an upper mounting portion located on the upper side.

Images