JP5902065B2 - Posture holder - Google Patents

Description

  The present invention relates to a posture holder for holding an upper arm part when the operator works with the upper arm part raised, 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 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 operator often works on the fruit tree on the upper shelf with the forearm portion facing upward with the upper arm portion oriented substantially horizontally, and in this state the operator's upper arm A large load is applied to the part. For example, in the case of piping and wiring work in a building, similarly, the operator works the pipe and wiring on the upper ceiling with the forearm facing upward with the upper arm facing substantially horizontal. In this state, a large load is applied to the upper arm portion of the worker.
In this case, since Patent Document 1 reduces the load on the waist of the worker, there is an increasing demand for a posture holder that reduces the load on the upper arm of the worker as described above.
An object of the present invention is to obtain a posture holder that can reduce the load applied to the upper arm of the worker in a posture holder that is worn and used by the worker.

[I]
(Constitution)
Attitude holder of the present invention,
A frame part that is attached to the back part of the operator, and right and left arm parts that extend forward from the right and left parts of the frame part and are attached to the right and left upper arm parts of the operator,
The right and left arm portions are configured to be swingable up and down around the right and left axis cores of the right and left portions of the frame portion and movable so as to open in the left and right directions,
A resistance mechanism that provides resistance to lateral movement of the right and left arm portions;
It is possible to switch between a permissible state in which the arm portion is allowed to move up and down accompanying the operation of the upper arm portion of the worker attached to the arm portion and a holding state in which the arm portion is held at an arbitrary position with respect to the frame portion. A holding mechanism;
An operation unit that operates the holding mechanism by being operated by an operator ;
The resistance mechanism is configured by a spring that urges the right and left arm portions toward the left and right central sides of the frame portion.

(Operation and effect of the invention)
[I] -1
According to the onset bright, attach the frame portion on the back part of the worker attaches the right and the arm portions of the left attitude retainer to the upper arm of the right and left of the operator. Therefore, if the holding mechanism is operated to hold and the right and left arm portions are held at the desired positions, the operator deposits the right and left upper arm portions at the right and left arm portions to obtain the desired positions. Can be held.

  As a result, in the work in the orchard or building as described above, when the worker works on the upper fruit tree, piping and wiring with the right and left upper arms oriented substantially horizontally, By holding the right and left upper arms in a substantially horizontal position with the right and left arms, and facing the right and left forearms upward, it is easy for the upper fruit trees, piping and wiring. Work can be done.

As described above, when the worker works with the right and left upper arms facing substantially horizontal and the right and left forearms facing upward, when the worker gets tired, And the left upper arm tends to open to the right and left lateral outer sides in addition to trying to move downward.
According to the first feature of the present invention, since the resistance mechanism that gives resistance to the laterally outward movement of the right and left arm portions is provided, the workers are tired and the right and left upper arm portions of the workers are A state of opening to the right and left lateral outer sides can be suppressed by the resistance mechanism, and work can be easily performed on upper fruit trees, piping, and wiring.
As described above, a posture holder suitable for work in an orchard or a building can be obtained.

[I] -2
In Patent Document 1, the elastic material always acts in the direction of lifting the upper body of the worker, and when the worker bends the upper body forward and downward from the upright state, the worker bends the upper body while stretching the elastic material. As a result, the operator may feel resistance when bending the upper body forward and downward from an upright state (because the upper body is bent against the elastic material).
Next, in Patent Document 1, as the elastic material is stretched (as the operator bends the upper body greatly forward and downward), the lifting force of the elastic material increases, so the operator bent the upper body downward and forward. When maintaining the state, there is only one angle where the lifting force of the elastic body and the weight of the upper body of the worker are balanced.

  As a result, in Patent Document 1, when the worker holds the upper body in a state where the upper body is bent forward and downward, the elastic material for the operator is reduced when the upper body is held at an angle smaller than the angle at the above-mentioned one place. Since the lifting force is insufficient, the operator needs to put power on the waist and the like so that the upper body does not fall. On the contrary, when holding the upper body at an angle larger than the above-mentioned one angle, the lifting force of the elastic material is too strong for the operator, so the operator should be on the waist etc. so that the upper body does not rise It is necessary to put effort.

[I] -3
Against the description of the preceding [I] -2, according to the present onset bright, the permission state of the holding mechanism in a state of mounting the posture retainer, worker along with moving the upper arm of the right and left, The right and left arm portions move so as to follow the right and left upper arm portions.
As a result, the right and left arm portions do not become resistant to the movement of the right and left upper arm portions, so that the operator can easily move the right and left upper arm portions while wearing the posture holder. Therefore, the right and left upper arms can be easily moved to desired positions, and the workability of the posture holding tool can be improved.

[I] -4
In contrast to the description in [I] -3, when the operator next moves the right and left upper arms to desired positions and then operates the holding mechanism to the holding state, the right and left arm Is held at a desired position, the operator can easily hold the right and left upper arm portions at the desired position by depositing them on the right and left arm portions.
In this case, even if the operator moves the right and left upper arms to different desired positions and then the operator operates the holding mechanism in the holding state, the worker does not move the right and left upper arms as described above. Can be easily held at different desired positions, and the operator can easily hold the right and left upper arms at various desired positions with the posture holder attached. The workability of the posture holder can be improved.
Furthermore, since it is not necessary to provide an electric cylinder or the like for driving the arm portion in the posture holder, a lightweight and inexpensive posture holder can be obtained.

Furthermore, according to the present onset bright, resistance mechanism is constituted by a spring, as the upper arm of the right and left of the operator opens laterally outwardly of the right and left, left and right frame portions of the arm portions of the right and left The displacement of the spring biased toward the center increases, and the biasing force (resistance) of this spring increases, so that the worker is tired and the right and left upper arms of the worker open to the right and left laterally outer sides. Can be suppressed well, and the workability of the posture holder can be improved.

[ II ]
(Constitution)
In the present invention,
In the right and when no upper arm of the left is attached to the worker in the arm portion of the front Symbol right and left, so that the arm portions of the right and left is inclined posture to approach each other farther forwardly from the frame portion In addition, it is preferable that the spring is set .

(Operation and effect of the invention)
According to this configuration , when the operator extends the right and left upper arms in parallel with the posture retainer attached, the spring is displaced, and the right and left arms are moved to the left and right center sides of the frame. The biasing force of the spring that biases in the direction is generated.

  Thus, in a normal state where the right and left upper arms are extended in parallel by the worker, the right and left arm portions are biased toward the left and right central sides of the frame portion, and the biasing force of this spring is The right and left upper arms of the operator are normally extended with the right and left upper arms parallel to each other while the right and left upper arms of the operator are prevented from opening to the right and left laterally outside. Thus, the work in the state can be stably performed, and the workability of the posture holder can be improved.

[ III ]
(Constitution)
In the present invention,
A plate spring is provided as the spring to constitute the frame portion,
It is preferable that the right and left arm portions are urged toward the left and right central sides of the frame portion by bending the plate spring portion to bend the entire frame portion .

(Operation and effect of the invention)
According to this configuration , the frame portion urges the right and left arm portions to the left and right center sides of the frame portion without separately providing springs that urge the right and left arm portions to the left and right center sides of the frame portion. Since the function is provided, the structure of the posture holder can be simplified.

[ IV ]
(Constitution)
In the present invention,
The right and left arm portions are configured to be located laterally outside the operator's right and left upper arm portions, and a U-shaped receiving portion opened toward the left and right center side of the frame portion is provided on the right side. And in preparation for the left arm,
By inserting the right and left upper arm portions of the operator into the receiving portions of the right and left arm portions, the right and left arm portions are attached to the right and left upper arm portions of the worker. It is preferable that

(Operation and effect of the invention)
According to this configuration , the right and left arm portions are located laterally outside the right and left upper arm portions of the operator and are opened toward the left and right central sides of the frame portion in a state in which the posture holder is mounted. U-shaped receiving portions are provided on the right and left arm portions.

  Thus, when attaching the right and left upper arms of the worker to the right and left arm portions, the worker moves the right and left upper arms to the lateral side and inserts them into the receiving portions of the right and left arm portions. As a result, the right and left upper arm portions of the operator are easily attached to the right and left arm portions, and the workability of the posture holder can be improved.

As described in the preceding item [ II ], in a normal state where the operator extends the right and left upper arms in parallel, the right and left arm portions are urged toward the left and right central sides of the frame portion, and this spring If the urging force is applied to the right and left upper arm portions of the operator, the right and left upper arm portions of the worker are difficult to be removed from the receiving portions of the right and left arm portions. The attachment state to the left arm portion is reliable.

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 the 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 disassembled perspective view which looked at the 2nd horizontal frame part, the board | substrate, the 1st arm part, the holding mechanism, etc. of the attitude | position holder from the front upper direction. It is the perspective view which looked at the board | substrate of the attitude | position holder, the holding mechanism, etc. from front upper direction. It is the disassembled perspective view which looked at the 2nd horizontal frame part, the 1st and 2nd arm part, the vertical receiving part, the lower receiving part and the upper receiving part, the operation part, etc. of the posture holder from back upper part. It is the perspective view which looked at the 1st and 2nd arm part, the vertical receiving part, the lower receiving part and the upper receiving part, the operation part, etc. of the posture holder from the front upper part. It is the side view which looked at the state where the worker wore the posture holder from the left side. It is the top view which looked at the attitude | position holder from upper direction. It is the disassembled perspective view which looked at the 2nd horizontal frame part of the 1st another form of implementation of the invention, the 1st arm part, an electromagnetic clutch, a one-way clutch, etc. from the front upper part.

[1]
As shown in FIGS. 1, 2, and 3, the posture holder includes a lower frame portion 1 (corresponding to a frame portion), a right and left vertical frame portion 2 (corresponding to a frame portion), and right and left first horizontal frame portions 3 (corresponding to a frame part), right and left second horizontal frame parts 4 (corresponding to frame parts), right and left first arm parts 5 (corresponding to arm parts), right and left second arm parts 6 (Corresponding to the arm portion), right and left holding mechanism 7 (see FIG. 6), 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 right and left vertical frame parts 2 will be described.
As shown in FIGS. 1, 2, and 3, the lower frame portion 1 is made of sheet metal and has a box shape, and a battery 18 that supplies power to the holding mechanism 7 (solenoid 23) is attached to the waist of the operator. The belt 8 made of cloth is fixed 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 the lower frame portion 1 of the vertical frame portion 2 described later. The connecting part to is covered.

  As shown in FIGS. 2, 3, and 4, the sheet metal vertical frame portion 2 is connected to the right and left horizontal portions of the lower frame portion 1 with a predetermined interval in the left-right direction and extends upward. A plate-like installation member 11 (corresponding to a frame portion, a resistance mechanism, a spring and a leaf spring) made of sheet metal (made of a leaf spring) is connected over the upper portions of the right and left vertical frame portions 2, and is made of sheet metal. A flat plate-shaped and arcuate installation member 12 (corresponding to a frame portion, a resistance mechanism, a spring, and a leaf spring) (made of a leaf spring) extends above the installation member 11 over the upper portions of the right and left vertical frame portions 2. It is connected so that it may be located.

  As shown in FIGS. 2, 3, and 4, a pad 9 having a rectangular shape in front view is attached across the lower frame portion 1, the right and left vertical frame portions 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 right and left first horizontal frame portions 3 and the right and left second horizontal frame portions 4 will be described.
As shown in FIGS. 2, 3, and 4, a metal first horizontal frame portion 3 is connected to the vertical frame portion 2 by bolts 13 and extends right and left laterally 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. 3 and 4, 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, and the second horizontal frame portion 4 extends from the first horizontal frame portion 3 obliquely forward to the right (left) laterally outward.

As shown in FIGS. 3 and 4, long 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. The positions of the first and second arm portions 5 and 6 (supported by the second horizontal frame 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 3, 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 portions of the bridging members 11 and 12 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 right and left first arm portions 5 and the holding mechanism 7 will be described.
As shown in FIGS. 5 and 6, the substrate 19 is connected to the front portion 4 c of the second horizontal frame portion 4, and the concentric openings 4 d and the front portion 4 c of the second horizontal frame portion 4 and the substrate 19 are provided. 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. 5 and 6, a disc portion 5b is attached to a base portion 5a of the first arm portion 5, and the disc portion 5b of the first arm portion 5 is a front portion 4c of the second horizontal frame portion 4c. In addition, the disc portion 5b of the first arm portion 5 is in contact with the inner side portion of the convex portion 19b of the substrate 19 by being inserted into the openings 4d and 19a of the substrate 19 from the inside. A ring-shaped substrate 5 c is provided, and a bolt 38 is fastened across the base 5 a, the disk portion 5 b, and the substrate 5 c of the first arm portion 5, and the convex portion 19 b of the substrate 19 is It is sandwiched between the disc portion 5b and the substrate 5c.

  Accordingly, as shown in FIGS. 5 and 6, 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. The convex part 19b of the board | substrate 19 is pinched | interposed by the disc part 5b and the board | substrate 5c of the 1st arm part 5, and the to-be-engaged part 20 (it connects with the board | substrate 5c of the 1st arm part 5) mentioned later. ) Is in contact with the edge of the opening 19 a of the substrate 19, the first arm portion 5 does not come off the second horizontal frame portion 4 and the substrate 19.

  As shown in FIGS. 5 and 6, the engaged portion 20 having a large number of oblique gear teeth is connected to the substrate 5 c of the first arm portion 5 by bolts 38, and the periphery of the left and right axis P <b> 2 of the substrate 19. The engaging claw portion 21 is swingably supported, and a spring 22 that urges the engaging claw portion 21 toward the engaging portion 20 is provided.

  As shown in FIGS. 5 and 6, the solenoid 23 is fixed to the substrate 19, and the connection member 24 is coupled across the engagement claw portion 21 and the solenoid 23. The solenoid 23 is supplied with electric power from the battery 18 provided in the lower frame portion 1 and is contracted by being energized by an operation signal from a limit switch (not shown) of the operation unit 31 described later.

As a result, as shown in FIGS. 5 and 6, when the first arm portion 5 is operated upward within the range in which the engaging claw portion 21 engages with the engaged portion 20, the spring 22 resists the spring 22. The state where the engaging claw portion 21 is detached from the engaged portion 20 and is engaged with the engaged portion 20 again is repeated, and the upward movement of the first arm portion 5 is allowed (allowable state).
In the range in which the engaging claw portion 21 is engaged with the engaged portion 20, even if the first arm portion 5 is operated downward, the engagement of the engaging claw portion 21 and the engaged portion 20 causes the first arm portion 5 to be operated downward. The downward movement of one arm portion 5 is prevented (holding state). When the solenoid 23 is energized and contracted to operate the engaging claw portion 21 away from the engaged portion 20, the first arm portion 5 can be freely operated upward and downward.

  As shown in FIGS. 2, 5, and 6, the holding mechanism 7 is configured by the engaged portion 20, the engaging claw portion 21, the spring 22, the solenoid 23, and the like. A cover 25 made of synthetic resin is attached to the laterally outer side of the substrate 19, and the engaged part 20, the engaging claw part 21, the spring 22 and the solenoid 23, the boss part 5 b of the first arm part 5, and the cover 25. The substrate 5c and the like are covered. A synthetic resin cover 39 is attached to the inner side of the base portion 5 a of the first horizontal frame portion 5.

[5]
Next, the right and left second arm portions 6 will be described.
As shown in FIG. 7, rails 6 a are formed on the upper and lower edges of the second arm part 6, and the upper and lower rail parts 6 a are on the first arm part 5 and on the first arm part 5. The second arm portion 6 is fitted in the lower edge portion 5d, and is slidably supported along the longitudinal direction (front-rear direction) of the first arm portion 5. A bolt 26 with a knob for fixing the second arm portion 6 at a desired mounting position with respect to the first arm portion 5 is provided. 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. 2, 7, and 8 (a), a vertical receiving portion 27 (corresponding to a receiving portion) in the vertical direction is provided at the front portion of the second arm portion 6, A lower receiving portion 28 (corresponding to the receiving portion) extending in a cantilever manner is provided on the inner side. Pads 32, 33, and 34 are attached to the lateral inner side of the second arm portion 6, the lateral inner side of the vertical receiving portion 27, and the upper surface portion of the lower receiving portion 28.

  As shown in FIGS. 2, 7, and 8 (a), an L-shaped upper receiving portion 29 (corresponding to the receiving portion) is swingably supported around the longitudinal axis P <b> 3 at the top of the vertical receiving portion 27. A spring 30 for biasing the upper receiving portion 29 downward is provided, and the upper receiving portion 29 cannot swing downward from the position shown in FIG. As shown in FIG. 8 (b), it can swing upward against the spring 30. Accordingly, the vertical receiving portion 27, the lower receiving portion 28, and the upper receiving portion 29 constitute a U-shaped (C-shaped) receiving portion that is open toward the left and right center side.

  As shown in FIG. 8A, the operation unit 31 is supported so as to be swingable around the oblique axis P4 at the front portion of the upper receiving portion 29, and the operation unit 31 is moved downward by a spring (not shown). Is being energized. The operating portion 31 cannot swing downward from the position shown in FIG. 8A by a stopper portion (not shown) of the upper receiving portion 29, and moves upward from the position shown in FIG. 8A against the spring. The upper receiving part 29 is provided with a limit switch (not shown) for detecting the upward swinging of the operation part 31.

[6]
Next, mounting of the posture holder will be described.
As shown in FIGS. 1 and 2, the worker carries the posture holding tool on his / her back, attaches the belt 10 to the worker's shoulder, applies the pad 9 to the operator's back, 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 body of the operator.

  Next, since the first and second arm portions 5 and 6 are positioned laterally outside the upper arm portion of the worker, the upper receiving portion 29 is operated upward, and the upper arm portion of the worker is moved to the vertical receiving portion 27. Then, it is inserted into the lower receiving portion 28 and the upper receiving portion 29, and the upper receiving 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 2, 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 advance in the left-right direction (lateral direction) (see [3] above).
The first horizontal frame portion 3 is arranged so that the elbow portion of the operator is positioned slightly in front of the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29 so that the bending and extending operation of the forearm portion of the operator can be performed without any trouble. The mounting position of the second arm portion 6 with respect to is adjusted in the front-rear direction in advance (see the previous item [5]).

  As shown by the solid line in FIG. 10, the worker is not wearing the posture holder (the state where the worker's upper arm is not inserted into the vertical receiving portion 27, the lower receiving portion 28, and the upper receiving portion 29). ) In which the right and left first and second arm portions 5 and 6 are inclined to approach each other as they move forward from the second horizontal frame portion 4. 11 and 12 are set.

  As a result, as shown in FIG. 1, the first and second arm portions 5 and 6 are lightly pressed against the upper arm portion of the worker in a state where the operator has the upper arm portion facing forward. The sense of unity between the upper arm portion of the worker and the first and second arm portions 5 and 6 (the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29) is increased, and the upper arm portion of the worker is the vertical receiving portion. 27, it becomes difficult to remove from the lower receiving portion 28 and the upper receiving portion 29. In a state where the operator does not wear the posture holding tool, the bridging member 12 serves as a handle portion, and by holding the bridging member 12, the posture holding tool can be easily held.

[7]
Next, the operation of the posture holder will be described (No. 1).
As shown in FIGS. 1 and 2, even when the worker wears the posture holder and the operator deposits the upper arm portion on the second arm portion 6 (lower receiving portion 28), as shown in FIG. Since the engaging claw portion 21 is engaged with the engaged portion 20, the downward movement of the first and second arm portions 5 and 6 is prevented, and the operator holds the upper arm portion at a desired position. (Corresponding to “any position”) .

  In this case, as shown in FIGS. 1 and 2, the load applied from the upper arm portion of the worker to the second arm portion 6 (the lower receiving portion 28) is the first arm portion 5, the first and second horizontal frame portions 3. , 4 and the vertical frame portion 2 and the belt 10 are transmitted to the lower frame portion 1, the belt 8 and the pad 9, and are stably received and supported by the waist, back and shoulders of the operator.

  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 from the upper arm portion to the second arm portion 6 (lower receiving portion 28) is transmitted to the lower frame portion 1, the belt 8 and the pad 9 without waste.

Next, when the operator moves the upper arm portion upward (when the first and second arm portions 5 and 6 are operated upward), the engaging claw portion 21 moves away from the engaged portion 20 against the spring 22. The state where the first arm portion 5 is released and the state where the first arm portion 5 is engaged again with the engaged portion 20 is repeated, and the upward movement of the first arm portion 5 is allowed. It will be in the state which moves upwards so that a part may be followed.
In this case, even if the operator moves the upper arm portion upward, the upper receiving portion 29 is opened upward, and the upper arm portion of the worker is not detached upward from the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29. The biasing force of the spring 30 is set so that the first and second arm portions 5 and 6 follow the upper arm portion of the operator.

  Next, when the operator moves the upper arm portion upward as described above and stops the upper arm portion, the engaging claw portion 21 engages with the engaged portion 20 as shown in FIG. The downward movement of the second arm portions 5 and 6 is prevented, and the worker holds the upper arm portion in a desired position (a position where the upper arm portion is stopped after the worker moves the upper arm portion upward). be able to.

Next, when the operator bends the forearm part to the upper arm part and operates the operation part 31 upward by the forearm part, the solenoid 23 is energized by the operation signal of the limit switch that detects the upward swing of the operation part 31. Then, the solenoid 23 is contracted and the engaging claw portion 21 is operated to be separated from the engaged portion 20.
Thus, when the worker moves the upper arm portion upward and downward, the first and second arm portions 5 and 6 move upward and downward so as to follow the upper arm portion of the worker, When the operation upward of 31 is stopped, the energization of the solenoid 23 is stopped, and the engaging claw portion 21 is engaged with the engaged portion 20 by the biasing force of the spring 22 as described above.

[8]
Next, the operation of the posture holder will be described (No. 2).
As shown in FIGS. 5 and 6, the region where the gear teeth are present in the engaged portion 20 is limited, and the region where the gear teeth are not present in the engaged portion 20 (the engagement claw portion 21 is engaged). The region not engaged with the portion 20 (gear teeth) is present on the upper side and the lower side of the engaged portion 20. In the region where the gear teeth do not exist in the engaged portion 20, the engaging claw portion 21 does not function regardless of the solenoid 23.

  In this case, as shown in FIG. 9, it is set upward by a predetermined angle with respect to the direction orthogonal to the extending direction of the vertical frame portion 2, in other words, with respect to the horizontal position A1 in a state in which the operator wears the posture holder. When the first and second arm portions 5 and 6 are moved to the upper set position A <b> 2, the engaging claw portion 21 is positioned at the upper end portion of the engaged portion 20. When the first and second arm portions 5 and 6 are moved to the lower setting position A3 set downward by a predetermined angle with respect to the horizontal position A1, the engaging claw portion 21 is positioned at the lower end portion of the engaged portion 20. It becomes a state to do.

As a result, as shown in FIG. 9, the engaging claw portion 21 does not engage the engaged portion 20 in the range above the upper set position A2 and the range below the lower set position A3. The user can freely move the upper arm portions (first and second arm portions 5 and 6) upward and downward regardless of the operation of the operation portion 31 (the holding mechanism 7 is the first regardless of the operation of the operation portion 31). And corresponding to a state in which the operation of the second arm portions 5 and 6 is permitted).
In this case, the upper set angle A2 is set to a higher position so that the angle between the horizontal position A1 and the upper set angle A2 is larger than the angle between the horizontal position A1 and the lower set position A3. Has been.

  When the work is performed without attaching the first and second arm parts 5 and 6 to the upper arm part of the operator, the first and second arm parts 5 and 6 are placed at the upper set position A2 (engagement). Since the claw portion 21 engages with the upper end portion of the engaged portion 20, the first and second arm portions 5 and 6 do not descend from the upper set position A2), and the operator can work freely. .

When the worker gets tired with the posture holding tool attached, the upper arm of the worker tends to move downward and tends to open to the right (left) laterally outer side.
In this case, as shown by the one-dot chain line in FIG. 10, when the upper arm portions (first and second arm portions 5, 6) of the worker try to open to the right (left) laterally outer side, the erection members 11, 12 are In this state, the vertical frame portion 2 is twisted around the vertical axis (bending state), and the upper arm portion of the operator (the first arm) is caused by the resistance of the construction members 11 and 12 and the vertical frame portion 2. The state in which the first and second arm portions 5 and 6) attempt to open to the right (left) laterally outer side is suppressed.

[First Alternative Embodiment of the Invention]
Instead of the engaged portion 20, the engaging claw portion 21, the spring 22, the solenoid 23, etc. of the above-mentioned [Mode for Carrying Out the Invention], the holding mechanism 7 may be configured as follows.
As shown in FIG. 11, a support shaft 35 is supported on the second horizontal frame portion 4 via a friction type electromagnetic clutch 36, and allows upward movement of the first and second arm portions 5 and 6. The first and second arm portions 5 and 6 are attached to the support shaft 35 via a one-way clutch 37 that prevents the first and second arm portions 5 and 6 from moving downward.

  As shown in FIG. 11, the electromagnetic clutch 36 is biased to a connected state by a spring (not shown), and the support shaft 35 is held non-rotatably by the second horizontal frame portion 4 in the connected state of the electromagnetic clutch 36. Is done. In this state, the upper arm portion (first and second arm portions 5 and 6) of the worker can be moved upward by the function of the one-way clutch 37. When the worker deposits the upper arm portion into the second arm portion 6 (lower receiving portion 28), the function of the one-way clutch 37 prevents the first and second arm portions 5 and 6 from moving downward, so that the operator Can hold the upper arm in a desired position.

  As shown in FIG. 11, when the operator operates the operation unit 31 upward, the electromagnetic clutch 36 is energized, and the electromagnetic clutch 36 is operated in a disconnected state. In this state, the one-way clutch 37 does not function, and the support shaft 35 rotates freely around the left and right axis P1 of the second horizontal frame portion 4. Thus, when the worker moves the upper arm portion upward and downward, the first and second arm portions 5 and 6 move upward and downward so as to follow the upper arm portion of the worker, When the operation above 31 is stopped, energization of the electromagnetic clutch 36 is stopped, and the electromagnetic clutch 36 is brought into a connected state.

  Instead of the friction type electromagnetic clutch 36 described above, a dog clutch type connection clutch (not shown) or a connection clutch (not shown) for engaging a claw portion or a pin with a ring gear (not shown) is used. The connection mechanism may be configured.

[Second Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Embodiment of the Invention], the operating portion 31 is not provided in the upper receiving portion 29, but the operating portion 31 is provided in the vertical receiving portion 27 and the lower receiving portion 28. You may prepare for. A harness (not shown) is extended from the second horizontal frame part 4 or the second arm part 6, and an operation part 31 is connected to the end part of the harness so that an operator operates the operation part 31 with his / her palm. You may comprise.

[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 receiving portion 29 is swingably supported around the longitudinal axis P3. Instead, the upper receiving portion 29 may be fixed to the vertical receiving portion 27 so as not to swing. When configured in this manner, the distance between the open portions between the upper receiving portion 29 and the lower receiving portion 38 is set to be slightly larger, and the operator sets the upper arm portion to the vertical receiving portion 27, the lower receiving portion 28, and the upper receiving portion. 29 may be configured so that it can be easily placed in 29.

[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 supporting member 14 is changed to a member having a different thickness to obtain the first. You may comprise so that the position of the 2nd horizontal frame part 4, the 1st and 2nd arm parts 5 and 6 with respect to the horizontal frame part 3 can be adjusted to the front-back direction.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Form of the Invention] to [Fourth Different Form of the Invention], the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29 are integrated. Thus, the vertical angle may be changed around the left and right axis of the front portion of the second arm portion 6.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for carrying out the invention] [First embodiment of the invention] to [Fifth embodiment of the invention], instead of the plate springs 11 and 12, as shown below, You may comprise.
The erection members 11 and 12 are constituted by hinge portions that connect the right part, the left part, the right and left parts so as to be swingable around the vertical axis, and the right and left parts of the erection members 11 and 12 are the vertical frame parts. 2 or the first horizontal frame portion 3. The right and left first and second horizontal frame parts 3 and 4 and the first and second arm parts 5 and 6 are configured to be able to approach and separate from each other by the hinge portions of the erection members 11 and 12. A coil spring (corresponding to a resistance mechanism and a spring) is attached to 12 hinge portions.

  Thereby, in a state where the worker is not wearing the posture holding tool (a state where the upper arm portion of the worker is not inserted into the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29), the right and left The coil springs of the hinge portions of the erection members 11 and 12 are set so that the first and second arm portions 5 and 6 are inclined to approach each other as they move forward from the first lateral frame portion 4.

  When the worker gets tired with the posture holding tool attached and the upper arm of the worker tries to move downward, when the worker tries to open the right (left) laterally outward, the erection members 11 and 12 The upper arm portions (first and second arm portions 5, 6) of the operator due to the resistance of the coil spring of the hinge portion and the resistance due to the vertical frame portion 2 being twisted (bent) around the vertical axis. ) Is prevented from opening to the right (left) laterally outside.

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

1, 2, 3, 4, 11, 12 Frame portion 5, 6 Arm portion 7 Holding mechanism 11, 12 Resistance mechanism, spring, leaf spring 27, 28, 29 Receiving portion 31 Operation portion P1 Left and right axis

Claims (4)

A frame part that is attached to the back part of the operator, and right and left arm parts that extend forward from the right and left parts of the frame part and are attached to the right and left upper arm parts of the operator,
The right and left arm portions are configured to be swingable up and down around the right and left axis cores of the right and left portions of the frame portion and movable so as to open in the left and right directions,
A resistance mechanism that provides resistance to lateral movement of the right and left arm portions;
It is possible to switch between a permissible state in which the arm portion is allowed to move up and down accompanying the operation of the upper arm portion of the worker attached to the arm portion and a holding state in which the arm portion is held at an arbitrary position with respect to the frame portion. A holding mechanism;
An operation unit that operates the holding mechanism by being operated by an operator ;
A posture holder in which the resistance mechanism is configured by a spring that urges the right and left arm portions toward the left and right central sides of the frame portion . In a state where the right and left upper arm portions of the operator are not attached to the right and left arm portions, the right and left arm portions are inclined so as to approach each other as they move forward from the frame portion. The posture holder according to claim 1 , wherein the spring is set. A plate spring is provided as the spring to constitute the frame portion,
The structure according to claim 1 or 2 , wherein the right and left arm portions are urged toward the left and right central sides of the frame portion by bending the whole plate portion by bending the portion of the leaf spring. The posture holder described. The right and left arm portions are configured to be located laterally outside the operator's right and left upper arm portions, and a U-shaped receiving portion opened toward the left and right center side of the frame portion is provided on the right side. And in preparation for the left arm,
By inserting the right and left upper arm portions of the operator into the receiving portions of the right and left arm portions, the right and left arm portions are attached to the right and left upper arm portions of the worker. The posture holder according to any one of claims 1 to 3 .

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