JP6021506B2 - 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 operator's lower back, there is an increasing demand for a posture holder that reduces the load on the upper arm of the worker as described above.
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)
The posture holder of the present invention is
A main body that is wound around and attached to the waist of the operator, a vertical frame that extends upward from the main body along the back of the operator, and a horizontal that extends from the vertical frame along the shoulder of the operator A horizontal frame portion that extends in the direction, and an arm portion that is supported to swing up and down around the left and right axis of the horizontal frame portion and extends forward, and is attached to the upper arm portion of the operator.
It is possible to switch between a permissible state that allows the operation of the arm part accompanying the operation of the upper arm part of an operator attached to the arm part and a holding state that holds the arm part at an arbitrary position with respect to the main body part. A holding mechanism,
An operation unit that operates the holding mechanism by being operated by an operator;
The arm portion extends forward from the shoulder portion of the operator, and the end portion of the arm portion is set to be positioned on the shoulder portion side of the operator's elbow portion, so that the operator's forearm portion can freely move. Is possible ,
The operation portion is provided at an end portion of the arm portion .

(Operation and effect of the invention)
[I] -1
According to the onset bright, attached by winding body portion of the posture holding member to the operator of the waist, attaching the arm posture holding member to the upper arm of the operator. Accordingly, when the arm mechanism is held at a desired position by operating the holding mechanism to the holding state, the operator can hold the arm portion at the desired position by depositing the upper arm portion at the arm portion.

Thereby, in the work in the orchard or the building as described above, when the worker works on the upper fruit tree, piping, and wiring with the upper arm portion oriented substantially horizontally, the worker Is held in a substantially horizontally oriented position by the arm portion, and the forearm portion is directed upward, so that work can be easily performed on the upper fruit tree, piping, and wiring.
In this case, the load applied to the arm part from the upper arm part of the worker is transmitted to the main body part via the horizontal frame part and the vertical frame part and is received by the operator's waist part. Is stably received and supported by the waist.
As described above, a posture holder suitable for work in an orchard 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, in a state of mounting the posture retainer, the permission state of the holding mechanism, the arm portion with for the operator moves the upper arm upper arm It moves to follow the part.
As a result, the arm portion does not become a resistance to the operation of the upper arm portion, so that the operator can easily move the upper arm portion with the posture holder attached, and the upper arm portion can be moved to a desired position. Therefore, the workability of the posture holder can be improved.

[I] -4
In contrast to the description in [I] -3 above, when the operator next moves the upper arm portion to a desired position and then the operator operates the holding mechanism to the holding state, the arm portion is held at the desired position. Therefore, the worker can easily hold the upper arm portion in a desired position by depositing the upper arm portion in the arm portion.
In this case, even if the operator moves the upper arm portion to another desired position and the operator operates the holding mechanism to the holding state, the operator can easily move the upper arm portion to another desired position as described above. The operator can easily hold the upper arm at various desired positions in a state in which the posture holder is mounted, and the workability of the posture holder can be improved. it can.
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.

[II]
(Constitution)
In the present invention , it is preferable that a belt is provided that is attached to the shoulder portion of the worker and prevents the vertical and horizontal frame portions from being separated from the back portion of the worker .

(Operation and effect of the invention)
As described in [I] -1 above, when the main body is wound around and attached to the operator's waist, and the arm is attached to the upper arm of the operator, the vertical and horizontal frame parts are positioned on the back of the operator. Will do.
In this case, according to this configuration , by attaching the belt to the shoulder portion of the worker, the vertical and horizontal frame portions can be aligned so as not to be separated from the operator's back portion. The load applied to the arm part is transmitted to the main body part and received by the operator's waist part, so that the function of the posture holder can be enhanced.

[III]
(Constitution)
In the present invention , it is preferable that a lateral adjustment portion that can adjust the position of the arm portion with respect to the lateral frame portion in a lateral direction is provided .

(Operation and effect of the invention)
According to this configuration , by adjusting the mounting position of the arm portion with respect to the horizontal frame portion in the lateral direction according to the physique of the worker, the posture holder is attached to match the physique of the worker (especially the shoulder width of the worker). The function of the posture holder can be enhanced.

[IV]
(Constitution)
In the present invention , it is preferable that a front / rear adjustment portion is provided that can adjust the position of the arm portion relative to the lateral frame portion in the front-rear direction .

(Operation and effect of the invention)
According to this configuration , by adjusting the mounting position of the arm portion with respect to the horizontal frame portion in the front-rear direction according to the physique of the operator, the posture holder can be adjusted to the physique of the worker (particularly the length of the upper arm portion of the worker). It becomes possible to attach them together, and the function of the posture holder can be enhanced.

[V]
(Constitution)
In the present invention , it is preferable that a vertical adjustment unit is provided that can adjust the position of the horizontal frame portion with respect to the vertical frame portion in the vertical direction .

(Operation and effect of the invention)
According to this configuration , the posture holder is mounted according to the physique of the worker (especially the height of the worker) by adjusting the mounting position of the horizontal frame to the vertical frame according to the physique of the worker. Thus, the function of the posture holder can be enhanced.
[VI]
(Constitution)
In the present invention, the holding mechanism is configured to allow the operation of the arm unit in a range above the upper set position set upward from the horizontal position regardless of the operation of the operation unit. Is preferred.
[VII]
(Constitution)
In the present invention, the holding mechanism is configured to allow the operation of the arm portion in a range below a lower set position set downward from a horizontal position regardless of the operation of the operation portion. Is preferred.

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, and a one-way clutch 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 main body portion), a right and left vertical frame portion 2, and right and left first horizontal frame portions 3 (in the horizontal frame portion). Equivalent), right and left second horizontal frame parts 4 (corresponding to horizontal frame parts), right and left first arm parts 5 (corresponding to arm parts), right and left second arm parts 6 (corresponding to arm parts) Equivalent), 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 and left belt for fixing to the shoulder of the operator 10 etc. are comprised.
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 2a (corresponding to the vertical adjustment part) is formed in the upper part of the vertical frame part 2, and a bolt 13 is inserted into the long hole 2a of the vertical frame part 2 and tightened. The position of the first horizontal frame portion 3 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, the base 4a and the support member 14 (corresponding to the front / rear adjustment part) of the second horizontal frame part 4 have a long hole 4b (corresponding to the lateral adjustment part), 14a (lateral adjustment part) And the bolt 16 is inserted into the second lateral frame portion 4 and the long holes 4b and 14a of the support member 14 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 concentric openings 4 d and the front portion 4 c of the second horizontal frame portion 4 and the substrate 19. 19 a is formed, and a convex portion 19 b is formed on the inner peripheral portion of the opening 19 a of the substrate 19.

  As shown in FIGS. 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 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, the lower receiving portion 28 and the upper receiving portion 29 are difficult to come off. 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 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 support member 14 (corresponding to the front / rear adjusting portion) is made different in thickness. By changing the position, the positions of the second horizontal frame part 4 and the first and second arm parts 5 and 6 with respect to the first horizontal frame part 3 may be adjusted in the front-rear 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 Alternative Embodiment of the Invention] to [Fifth Alternative Embodiment of 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.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Vertical frame part 2a Vertical adjustment part 3, 4 Horizontal frame part 4b, 14a Horizontal adjustment part 6a, 14 Front-rear adjustment part 7 Holding mechanism 10 Belt 31 Operation part P1 Left-right axis
A1 horizontal position
A2 Upper setting position
A3 downward setting position

Claims (7)

A main body that is wound around and attached to the waist of the operator, a vertical frame that extends upward from the main body along the back of the operator, and a horizontal that extends from the vertical frame along the shoulder of the operator A horizontal frame portion that extends in the direction, and an arm portion that is supported to swing up and down around the left and right axis of the horizontal frame portion and extends forward, and is attached to the upper arm portion of the operator.
It is possible to switch between a permissible state that allows the operation of the arm part accompanying the operation of the upper arm part of an operator attached to the arm part and a holding state that holds the arm part at an arbitrary position with respect to the main body part. A holding mechanism,
An operation unit that operates the holding mechanism by being operated by an operator;
The arm portion extends forward from the shoulder portion of the operator, and the end portion of the arm portion is set to be positioned on the shoulder portion side of the operator's elbow portion, so that the operator's forearm portion can freely move. Is possible ,
A posture holding tool in which the operation section is provided at an end of the arm section .   The posture holding tool according to claim 1, further comprising a belt attached to a shoulder portion of the worker to prevent the vertical and horizontal frame portions from being separated from the back portion of the worker.   The posture holding tool according to claim 1, further comprising a lateral adjustment portion that can adjust a position of the arm portion with respect to the lateral frame portion in a lateral direction.   The posture holder according to any one of claims 1 to 3, further comprising a front / rear adjustment unit that can adjust a position of the arm unit with respect to the horizontal frame unit in a front-rear direction.   The posture holder according to any one of claims 1 to 4, further comprising a vertical adjustment unit that can adjust a position of the horizontal frame unit with respect to the vertical frame unit in a vertical direction.   The said holding | maintenance mechanism is comprised so that operation | movement of the said arm part in the range above the upper setting position set upwards from the horizontal position may be permitted irrespective of operation of the said operation part. The posture holder according to any one of the above.   The said holding | maintenance mechanism is comprised so that operation | movement of the said arm part in the range below the downward setting position set downward from the horizontal position irrespective of operation of the said operation part may be comprised. The posture holder according to any one of the above.

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