JP2014033778A - Posture holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a posture holder worn and used by a worker, which is configured not to impose resistance on the worker when the worker moves the arms or the legs to desired positions.SOLUTION: The posture holder includes: body sections 2 and 4 to be attached to a worker; and arm sections 5 and 6 to be attached to the arms or legs extending from joints of the worker close to the body sections 2 and 4. The posture holder further includes: a holding mechanism that can switch between a permission state for permitting movement of the arm sections 5 and 6 associated with movement of the worker's arms or legs attached to the arm sections 5 and 6, and a holding state for holding the arm sections 5 and 6 at desired positions with respect to the body sections 2 and 4; and a manipulation section 31 manipulated by the worker so as to manipulate the holding mechanism.

Description

  The present invention is worn and used by an operator. For example, the posture of the operator when the arm is raised, the upper body is bent forward and downward, the knee is bent and the waist is lowered. It is related with the posture holder for holding.

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

  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.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a posture holding tool to be worn and used by an operator so that the posture holding tool does not become a resistance when the worker moves an arm or a foot to a desired position. And it aims at comprising so that an operator can hold | maintain an arm part or a leg | foot part easily in various desired positions.

[I]
(Constitution)
The first feature of the present invention is that the posture holder is configured as follows.
A main body portion attached to an operator, and an arm portion attached to an arm portion or a foot portion extending from a joint portion of an operator close to the main body portion, the main body portion including
Switching between a permissible state that allows movement of the arm part associated with movement of an arm part or a foot part of an operator attached to the arm part and a holding state that holds the arm part at a desired position with respect to the main body part. With a flexible holding mechanism,
An operation unit that operates the holding mechanism when operated by an operator is provided.

(Operation and effect of the invention)
[I] -1
According to the first feature of the present invention, in a state where the posture retainer is mounted, the arm portion is changed to the arm portion (foot portion) as the operator moves the arm portion (foot portion) according to an allowable state of the holding mechanism. It moves to follow.
As a result, the arm part does not become a resistance to the movement of the arm part (foot part), so that the operator can easily move the arm part (foot part) in a state where the posture holder is mounted. The arm (foot) can be easily moved to a desired position, and the workability of the posture holder can be improved.

[I] -2
Next, after the operator moves the arm (foot) to a desired position, when the operator operates the holding mechanism to the holding state, the arm is held at the desired position. By keeping the foot) in the arm, it can be easily held in a desired position. Further, after the operator moves the arm (foot) to another desired position, if the operator operates the holding mechanism to the holding state, the operator moves the arm (foot) to another position as described above. It can be easily held at a desired position.

  As a result, the operator can easily hold the arms (foot portions) at various desired positions in a state in which the posture holder is mounted, and the workability of the posture holder can be improved. Since there is no need 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.

[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 holding mechanism is
Allowing the arm part or the foot part of the operator attached to the arm part to move upwardly with the movement of the arm part and preventing the downward movement of the arm part to place the arm part in a desired position. A one-way mechanism held by
A release mechanism that releases the blocking of the downward movement of the arm portion by the one-way mechanism and allows the downward movement of the arm portion; and
The operation unit operates the release mechanism.

(Constitution)
The third feature of the present invention is that the posture holder of the first feature of the present invention is configured as follows.
The holding mechanism is
Allowing the arm part or the foot part of the operator attached to the arm part to move upwardly with the movement of the arm part and preventing the downward movement of the arm part to place the arm part in a desired position. A one-way mechanism held by
Switchable between a connection state in which the main body portion and the arm portion are connected to function the one-way mechanism, and a cut-off state in which the main body portion and the arm portion are cut off to allow the operation of the arm portion. And a connection mechanism,
The operation unit operates the connection mechanism.

(Operation and effect of the invention)
[II] -1
As described in [I] -2 above, when an operator holds the arm part (foot part) in the arm part and holds the arm part (foot part) in a state where the posture holder is mounted, the arm part (foot part) If it is received by the arm portion, it is possible for the operator to work easily.
In this case, according to the second feature (third feature) of the present invention, the holding mechanism of the posture holder is configured by including the one-way mechanism and the release mechanism (connection mechanism).
As a result, the operator can move the arm (foot) upward without operating the release mechanism (connection mechanism) with the operation unit (with the one-way mechanism). By allowing the upward movement of the arm portion), the workability of the posture holder can be improved.

[II] -2
In the state described in [II] -1, the operation is stopped by the one-way mechanism from the stopped position when the worker stops the upward movement of the arm part (foot part). The arm portion is held at the stopped position. Thereby, the operator can hold | maintain an arm part (foot part) (arm part) in a desired position.

  In this state, when the operator moves the arm part (foot part) downward, the operator operates the release mechanism (connection mechanism) to the release state (blocking state) by the operation part, whereby the arm part (foot part). As the arm part (foot part) is moved downward, the arm part moves downward so as to follow the arm part (foot part). Thereafter, the operator operates the release mechanism (connection mechanism) to the stop state (connection state) by the operation unit, so that the operator places the arm part (foot part) (arm part) in a desired position as described above. Can be held.

  As described above, according to the second feature (third feature) of the present invention, the holding mechanism is configured by effectively using the function of the one-way mechanism. A mechanism (connection mechanism) can be simply configured.

[III]
(Constitution)
A fourth feature of the present invention may be configured as follows in any one of the posture holders of the first to third features of the present invention.
The main body is attached to the trunk or shoulder of the operator, and the arm is attached to the upper arm of the operator.

(Operation and effect of the invention)
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 trees on the upper shelf with the forearm portion facing upward with the upper arm portion oriented substantially horizontally. 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. There are things to do.

According to the fourth feature of the present invention, the upper arm portion of the worker is attached to the arm portion in a state in which the posture holder is mounted, and the worker holds the upper arm portion in the arm portion and holds it in a desired position. be able to.
As a result, in the above-described work, when the worker works on the upper fruit tree, piping, and wiring with the upper arm portion oriented substantially horizontally, the worker holds the upper arm portion substantially horizontally by the arm portion. By holding the head and the forearm portion facing upward, the upper fruit tree, piping and wiring can be easily operated. Therefore, it is possible to obtain a posture holder suitable for work in an orchard or a building.

[IV]
(Constitution)
The fifth feature of the present invention is that the posture holder of the fourth feature of the present invention is configured as follows.
The operating portion is provided in the arm portion so that the operating portion is operated by the operation of the forearm portion of the operator.

(Operation and effect of the invention)
According to the fifth feature of the present invention, when the upper arm part of the worker is attached to the arm part in a state where the posture holding tool is mounted as described in [III], the forearm part of the worker is compared. Can move freely.
As a result, when the position of the arm part is changed while the operator holds the upper arm part in the arm part and is held at a desired position, the operation part is operated by the forearm part that can be moved relatively freely. By doing so, the holding mechanism can be easily operated to an allowable state.
After this, the operator can change the position of the arm part by moving the upper arm part, and by operating the operation part with the forearm part that can be moved relatively freely, the holding mechanism is brought into the holding state. Easy to operate. Therefore, it is possible to obtain a posture holder suitable for work in an orchard or a building.

[V]
(Constitution)
A sixth feature of the present invention is that the posture holder of the fourth or fifth feature of the present invention is configured as follows.
The holding mechanism is configured so that the operation of the arm unit is allowed regardless of the operation of the operation unit in a range above the upper set position set upward from the horizontal position.

(Constitution)
According to a seventh aspect of the present invention, any one of the posture holders according to the fourth to sixth aspects of the present invention is configured as follows.
The holding mechanism is configured so that the operation of the arm unit is allowed regardless of the operation of the operation unit in a range below the lower setting position set downward from the horizontal position.

(Operation and effect of the invention)
As described in [III] and [IV] above, for example, when working in an orchard or a building, the height of the shelf or ceiling is substantially constant, so that the posture is maintained in a state where the posture holder is attached. If the arm part of the tool is held in a substantially horizontal position, the work on the upper fruit tree, piping and wiring can be performed.
In other words, when the arm is changed from a substantially horizontal position to a position that is largely above or below in a state where the posture holder is mounted, a state in which work other than work on the upper fruit trees, piping, and wiring is performed. It is assumed that

  According to the sixth feature (seventh feature) of the present invention, in a state where the posture retainer is mounted, the operator holds the operator by the operation unit in the range above the upper set position (the range below the lower set position). The upper arm can be moved freely without operating the mechanism to an allowable state, and work other than work on the upper fruit trees, piping and wiring can be easily performed, and in orchards and buildings It was possible to obtain a posture holder suitable for the work.

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 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 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 made of a sheet metal (made of a leaf spring) is connected over the upper portions of the right and left vertical frame portions 2, and is a plate-like and arc-like installation member made of a sheet metal (made of a leaf spring). 12 is connected so that it may be located above the construction member 11 over the upper part of the right and left vertical frame parts 2.

  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 connected to the first arm portion 5. 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 (corresponding to a one-way mechanism) having a large number of oblique gear teeth is connected to the substrate 5 c of the first arm portion 5 by bolts 38. An engagement claw portion 21 (corresponding to a one-way mechanism) is swingably supported around the left and right axis core P2 of 19 and urges the engagement claw portion 21 toward the engagement side with the engaged portion 20. A spring 22 (corresponding to a one-way mechanism) is provided.

  As shown in FIGS. 5 and 6, a solenoid 23 (corresponding to a release mechanism) is fixed to the substrate 19, and a 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 in the vertical direction is provided at the front portion of the second arm portion 6, and cantilevered from the bottom of the vertical receiving portion 27 to the inner side. The lower receiving portion 28 is provided. 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 is swingably supported around the longitudinal axis P <b> 3 on the upper portion of the vertical receiving portion 27, so that the upper receiving portion 29 is moved. A downwardly biasing spring 30 is provided, and the upper receiving portion 29 cannot swing downward from the position shown in FIG. 8A due to contact with the vertical receiving portion 27, and resists the spring 30. As shown in FIG. 8B, it can swing upward. 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] in the previous section).
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. Can be held in.

  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 frictional electromagnetic clutch 36 (corresponding to a connection mechanism), and above the first and second arm portions 5 and 6. Through a one-way clutch 37 (corresponding to a one-way mechanism) that allows the first and second arm portions 5 and 6 to move downward. 6 is attached to the support shaft 35.

  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 Different Form of the Invention] to [Fifth 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 body part of the operator, the lower frame part 1 and the vertical frame part 2 are eliminated, and the first and second horizontal frame parts 3 and 4 are placed on the back or shoulders of the operator. The first and second arm parts 5 and 6 may be attached to the upper arm part of the operator.

The structure of the first and second arm portions 5 and 6 is changed so that the first and second arm portions 5 and 6 can be attached to the operator's thighs. Part 2, first and second horizontal frame parts 3 and 4 are turned upside down and attached to the body part of the operator, and first and second arm parts 5 and 6 are attached to the thigh part of the operator. May be.
If comprised in this way, the upper operation | movement of a worker's upper body is accept | permitted with respect to a worker's thigh, the operation | movement to the downward direction of a worker's upper body is blocked | prevented, and a worker's upper body is As a result, the load on the waist of the operator can be reduced.

The lower frame part 1 and the vertical frame part 2 are eliminated, the first and second horizontal frame parts 3 and 4 are attached to the operator's thighs, and the structure of the first and second arm parts 5 and 6 is changed. The first and second arm portions 5 and 6 may be configured to be attached to the operator's calf portion.
With this configuration, the operator's calf is allowed to move upwardly from the operator's thigh and is prevented from moving downward from the operator's thigh. Is supported, and the load on the knee of the operator can be reduced.

[Seventh Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention] to [Sixth Another Mode for Carrying Out the Invention], the first and second horizontal frame portions 3, 3 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 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 Body portion 5, 6 Arm portion 7 Holding mechanism 31 Operation portion 20, 21, 22 One-way mechanism 23 Release mechanism 36 Connection mechanism 37 One-way mechanism A1 Horizontal position A2 Upper set position A3 Lower set position

Claims (7)

A main body portion attached to an operator, and an arm portion attached to an arm portion or a foot portion extending from a joint portion of an operator close to the main body portion, the main body portion including
Switching between a permissible state that allows movement of the arm part associated with movement of an arm part or a foot part of an operator attached to the arm part and a holding state that holds the arm part at a desired position with respect to the main body part. With a flexible holding mechanism,
An attitude holder comprising an operation unit that operates the holding mechanism when operated by an operator. The holding mechanism is
Allowing the arm part or the foot part of the operator attached to the arm part to move upwardly with the movement of the arm part and preventing the downward movement of the arm part to place the arm part in a desired position. A one-way mechanism held by
A release mechanism that releases the blocking of the downward movement of the arm portion by the one-way mechanism and allows the downward movement of the arm portion; and
The posture holder according to claim 1, wherein the operation unit operates the release mechanism. The holding mechanism is
Allowing the arm part or the foot part of the operator attached to the arm part to move upwardly with the movement of the arm part and preventing the downward movement of the arm part to place the arm part in a desired position. A one-way mechanism held by
Switchable between a connection state in which the main body portion and the arm portion are connected to function the one-way mechanism, and a cut-off state in which the main body portion and the arm portion are cut off to allow the operation of the arm portion. And a connection mechanism,
The posture holder according to claim 1, wherein the operation unit operates the connection mechanism.   The posture according to any one of claims 1 to 3, wherein the main body portion is attached to a trunk portion or a shoulder portion of an operator, and the arm portion is attached to an upper arm portion of the worker. Retaining tool.   The posture holder according to claim 4, wherein the arm portion is provided so that the operation portion is operated by an operation of a forearm portion of an operator.   5. The holding mechanism is configured so that the operation of the arm unit is allowed regardless of the operation of the operation unit in a range above the upper set position set upward from the horizontal position. 5. A posture holder according to 5.   The holding mechanism is configured such that the operation of the arm portion is allowed regardless of the operation of the operation portion in a range below the lower setting position set downward from the horizontal position. The posture holder according to any one of 6.

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