KR101740573B1

KR101740573B1 - Posture holder

Info

Publication number: KR101740573B1
Application number: KR1020147034226A
Authority: KR
Inventors: 마사히코 하야시; 시게키 하야시; 가즈히코 구로키; 히로미치 후지모토; 고 시로가우치
Original assignee: 가부시끼 가이샤 구보다
Priority date: 2012-08-08
Filing date: 2013-02-25
Publication date: 2017-05-26
Also published as: CN104379095B; KR20150018804A; KR101939514B1; CN104379095A; WO2014024506A1; KR20170061180A

Abstract

When the operator moves the arm portion or the leg portion to a desired position in the posture holding tool mounted and used by an operator, the posture maintaining portion is configured not to be a resistor. And body portions 2 and 4 attached to the worker and arm portions 5 and 6 attached to arm portions or leg portions extending from the joints of the worker approaching the body portions 2 and 4. [ 6 permitting the operation of the arms 5 and 6 accompanied by the operation of the arm or leg of the operator mounted on the arms 5 and 6 and the permitting state permitting operation of the arm portions 5 and 6 with respect to the body portions 2 and 4. [ 6) from a desired position, and has an operating portion (31) for operating the holding mechanism by being operated by an operator.

Description

POSTURE HOLDER

The present invention relates to a posture maintaining apparatus for use by a worker and used for maintaining postures of an operator at the time of work.

As disclosed in Patent Document 1, there are provided an upper portion mounted on a body portion of an operator and a lower portion mounted on a leg portion of an operator, And an elastic material such as a tube is connected.

As a result, when the operator bends the upper body downward, the elastic material tends to stretch and the elastic material tries to lift the upper body of the worker. As shown in Fig. 1 (B) In the case of maintaining a state of bending forward (downward), the elastic body assists the operator.

Japanese Patent Application Laid-Open No. 2005-192764 Japanese Patent Application Laid-Open No. 2009-284942

In the case of Patent Document 1, when the worker always bends the upper body downward from the upright state, the worker bends the upper body while stretching the elastic material, So that the worker may feel resistance when bent from the upright state to the downward direction.

Next, in Patent Document 1, the lifting force of the elastic material is increased as the elastic material is stretched (the greater the worker bends the upper body downward and downward). Therefore, when the worker keeps the upper body bent forward and downward, There is only one angle at which the lifting force of the worker and the weight of the worker's upper body are balanced.

Thus, in Patent Document 1, when the worker keeps the upper body bent forward and downward, when the upper body is held at an angle smaller than the above-mentioned one angle, the worker does not have sufficient lifting force of the elastic material, It is necessary to apply force to the waist so that the upper body does not descend. On the contrary, when the upper body is held at an angle larger than the above-mentioned one angle, the lifting force of the elastic material is excessively strong for the operator, so the worker needs to apply a force to the waist to prevent the upper body from rising.

Further, for example, in a fruit orchard, a cache somewhat higher than the height of the worker is surrounded, and fruit trees such as grapes are often grown in this cache. In such an orchard, the operator often works on the fruit of the upper cache with the forearm directed upward with the upper arm directed substantially horizontally. In this state, a heavy load is applied to the upper arm of the worker. For example, when piping and wiring work are performed in a building, an operator may work on the piping and wiring of the upper ceiling portion with the forearm portion facing upward with the forearm portion oriented substantially horizontally , And a large load is applied to the upper arm of the operator in this state.

In this case, since the patent document 1 reduces the load on the waist of the operator, there is a demand for a posture maintaining mechanism for reducing the load on the forearm of the operator as described above.

The object of the present invention is to provide a configuration in which, when an operator moves the arm portion or the leg portion to a desired position, the posture maintaining means does not become a resistance in the posture maintaining means mounted and used by an operator, So that the user can comfortably hold the part at various desired positions.

It is another object of the present invention to obtain an attitude holding tool capable of reducing a load applied to an upper arm of a worker in an attitude adjusting tool mounted and used by an operator.

According to the present invention, there is provided a posture maintaining device comprising: a main body mounted to an operator;

An arm portion provided on the main body portion and mounted on an arm portion or a leg portion extending from a joint portion of an operator close to the main body portion;

A retaining mechanism capable of switching between a permitting state permitting the operation of the arm portion accompanied by an operation of an arm or a leg portion of an operator mounted on the arm portion and a retaining state maintaining the arm portion at a desired position with respect to the body portion,

And an operation unit that operates the holding mechanism by being operated by an operator.

According to the present invention, in a state in which the posture holding tool is mounted, the arm is moved so as to follow the arm portion (leg portion) as the operator moves the arm portion (leg portion) by the permissive state of the holding mechanism.

Thus, since the arms do not become resistance to the operation of the arm portions (leg portions), the operator can comfortably move the arm portions (leg portions) in the state in which the posture holding holes are mounted, So that the workability of the posture maintaining mouth can be improved.

Next, when the worker moves the arm portion (leg portion) to a desired position and then the worker operates the retaining mechanism to the retained state, the arm portion is held at the desired position, so that the worker places the arm portion You can keep it comfortable in the desired position. Further, when the operator operates the holding mechanism to the holding state after the operator moves the arm portion (leg portion) to another desired position, the operator can comfortably hold the arm portion (leg portion) at the desired position as described above.

Thus, the operator can comfortably hold the arm portion (leg portion) at various desired positions in a state in which the posture maintaining port is mounted, and the workability of the posture maintaining port can be improved. It is not necessary to provide an electric cylinder or the like for driving the arm portion in the posture maintaining mouth, thereby providing a lightweight and inexpensive posture holding mouth.

In the above configuration,

Wherein the holding mechanism comprises:

A unidirectional mechanism for permitting the upward movement of the arm portion accompanied by the operation of the arm portion or the leg portion of the operator mounted on the arm portion and for holding the arm portion at a desired position by inhibiting the operation of the arm portion downward;

And a release mechanism for releasing the inhibition of the operation of the arm portion by the unidirectional mechanism to the downward direction and allowing the operation of the arm portion to be performed downward,

It is preferable that the operating portion operates the releasing mechanism.

In the above configuration,

Wherein the holding mechanism comprises:

A connection state in which the main body portion and the arm portion are connected to each other so that the one-way mechanism functions; and a connection mechanism capable of switching the main body portion and the arm portion to a blocking state for allowing the operation of the arm portion,

It is preferable that the operation section operates the connection mechanism.

When the operator holds the arm portion (leg portion) in the desired position by holding the arm portion (leg portion) with the arm portion in a state in which the posture holding tool is mounted, .

According to this configuration, a one-way mechanism and a release mechanism (connection mechanism) are provided to constitute a holding mechanism of the posture maintaining mouth.

Thus, the operator can move the arm portion (leg portion) upward without operating the disengagement mechanism (connection mechanism) by the operation portion in a state in which the posture maintaining means is mounted (the upward movement of the arm portion The operation of the posture maintaining mouth can be improved.

In this state, when the worker stops the upward movement of the arm portion (leg portion), the operation from the stopped position to the downward movement of the arm portion is blocked by the one-way mechanism, so that the arm portion is held at the stopped position . Thereby, the operator can keep the arm portion (arm portion) at a desired position.

In this state, when the operator moves the arm portion (leg portion) downward, the operator can move the arm portion (leg portion) downward by operating the disengaging mechanism (connection mechanism) As the arm part (leg part) moves downward, the arm part moves downward to follow the arm part (leg part). Thereafter, when the operator operates the disengaging mechanism (connection mechanism) to the stopped state (connected state) by the operation unit, the operator can keep the arm portion (arm portion) (arm portion) at a desired position as described above.

As described above, according to this configuration, since the holding mechanism is constituted by effectively utilizing the function of the one-way mechanism, the holding mechanism can be simply constituted by the one-way mechanism and the releasing mechanism (connection mechanism).

In the above configuration, it is preferable that the main body portion is mounted on the body portion or the shoulder portion of the operator, and the arm portion is mounted on the upper arm portion of the operator.

For example, in the orchard, a cache somewhat higher than the height of the worker is surrounded, and fruit trees such as grapes are often grown in this cache. In such a fruit orchard, the worker often performs work on the fruit of the upward cache with the forearm directed upward with the upper arm directed substantially horizontally. For example, when piping and wiring work are performed in a building, a worker may work the piping and wiring of the upper ceiling portion with the forearm portion facing upward with the upper arm portion oriented substantially horizontally .

According to this configuration, the operator's upper arm portion is mounted on the arm portion in a state in which the posture maintaining port is mounted, and the operator can hold the arm portion at a desired position by leaving the arm portion to the arm portion.

Thus, in the above-described operation, when the worker performs work on the upward flow of water, piping, and wiring in a state in which the upper arm is oriented substantially horizontally, the worker places the upper arm in a position And the forearm is directed upward, it is possible to work comfortably on the upper fruit, the pipe, and the wiring. Therefore, it is possible to obtain a posture maintaining section suitable for work in an orchard or a building.

In the above configuration, it is preferable that the operating portion is provided in the arm portion so as to be operated by the operation of the forearm portion of the operator.

According to this configuration, when the upper arm portion of the operator is attached to the arm portion in a state in which the posture maintaining port is mounted, the forearm portion of the operator can move relatively freely.

In this way, when the position of the arm portion is changed in a state where the operator holds the arm portion at the desired position by leaving the arm portion at the desired position, the operating portion is operated by the forearm portion which is relatively freely movable, .

Thereafter, the operator can change the position of the arm portion by moving the upper arm portion. By operating the operation portion with the forearm portion which can move relatively freely, the holding mechanism can be easily operated in the holding state. Therefore, it is possible to obtain a posture maintaining section suitable for work in an orchard or a building.

In the above configuration, it is preferable that the holding mechanism is configured such that the operation of the arm portion is allowed regardless of the operation of the operating portion in a range above the upwardly set position set upward from the horizontal position.

In the above configuration, it is preferable that the holding mechanism is configured such that the operation of the arm portion is allowed regardless of the operation of the operating portion in a range lower than the downwardly set position set downward from the horizontal position.

For example, when the work is carried out in an orchard or a building, the height of the ceiling or the ceiling is substantially constant. Therefore, if the arm portion of the posture maintaining port is maintained at a substantially horizontal position with the posture maintaining port attached, Work on wiring can be done.

In other words, when the arm portion is changed from a substantially horizontal position to a position that is significantly upward or downward in a state in which the posture maintaining port is mounted, a state in which an operation other than the upward flow of water, piping, and wiring is performed .

According to this configuration, in the state in which the posture maintaining port is mounted, in the range above the upwardly set position (in the range lower than the downwardly set position), the operator can freely move the forearm portion So that it is possible to easily carry out operations other than work on the upward flow of water, piping and wiring, and it is possible to obtain an attitude maintenance hole suitable for work in an orchard or a building.

The posture maintaining device according to the present invention includes a main body portion which is wound around a waist of an operator and is mounted,

A vertical frame portion extending upward from the body portion along the back portion of the operator,

A transverse frame portion extending transversely along the shoulder portion of the operator from the vertical frame portion,

An arm portion which is supported to be swingable upward and downward about the center of the left and right shafts of the horizontal frame portion and extends forward and is mounted on an upper arm portion of an operator,

A retaining mechanism capable of switching between a permitting state permitting the operation of the arm portion accompanied by an operation of an upper arm portion of an operator mounted on the arm portion and a retaining state of holding the arm portion at a desired position with respect to the body portion,

According to the present invention, the body portion of the posture holding tool is wound around the waist portion of the worker, and the arm portion of the posture holding tool is mounted on the upper arm portion of the worker. Therefore, when the holding mechanism is operated to the holding state and the arm portion is held at the desired position, the operator can hold the arm portion at the desired position by leaving the arm portion to the arm portion.

Thus, when the worker performs work on the upper fruit, the pipe, and the wiring in a state where the upper arm is oriented substantially horizontally in the operation of the orchard or the building as described above, the worker places the upper arm with the arm portion And the forearm is directed upward so that it is possible to work comfortably on the upward flow of water, piping, and wiring.

In this case, a load applied to the arm portion from the upper arm portion of the worker is transmitted to the main body portion through the horizontal frame portion and the vertical frame portion, and is received by the waist portion of the worker. Thus, the load from the upper arm portion of the worker is stably received .

As described above, it is possible to obtain a posture maintaining section suitable for work in the orchard.

In Patent Document 1, when the elastic material always acts in the direction of raising the upper body of the worker and the worker bends the upper body downward from the upright state, the worker bends the upper body while stretching the elastic material So that the worker may feel resistance when bent from the upright state to the downward direction.

According to the present invention, in a state in which the posture holding tool is mounted, the state in which the arm moves so as to follow the upper arm accompanied by the movement of the upper arm by the worker in accordance with the permissible state of the holding mechanism.

Thus, since the arms do not become resistance to the operation of the upper arm, the operator can move the upper arm comfortably in the state where the posture maintaining tool is attached, and can move the upper arm part comfortably to the desired position, The workability of the sphere can be improved.

Next, when the operator moves the upper arm to the desired position and then the operator operates the holding mechanism to the holding state, the arm portion is held at the desired position, so that the operator can comfortably maintain the desired position by leaving the upper arm to the arm portion .

In this case, even if the operator operates the retaining mechanism to the retained state after moving the upper arm to another desired position, the operator can comfortably maintain the upper arm at another desired position in the same manner as described above, The operator can keep the upper arm comfortably at various desired positions in one state, and workability of the posture maintaining mouth can be improved.

Further, since there is no need to provide an electric cylinder or the like for driving the arm portion in the posture maintaining mouth, a lightweight and inexpensive posture holding mouth can be obtained.

In the above configuration, it is preferable that a belt mounted on a shoulder portion of an operator and preventing the vertical frame portion and the horizontal frame portion from being separated from the worker's back portion is provided.

When the main body is wound on the waist of the operator and mounted, and the arm is mounted on the upper arm of the operator, the vertical and horizontal frame portions are positioned at the back of the operator.

In this case, according to this configuration, since the belt is attached to the shoulder portion of the operator, the vertical and horizontal frame portions can follow the operator so as not to be separated from the back portion of the operator. And is received by the waist of the worker, so that the function of the posture maintaining mouth can be enhanced.

In the above configuration, it is preferable that the transverse adjuster includes a transverse adjuster capable of adjusting the position of the arm with respect to the transverse frame.

According to this configuration, by adjusting the mounting position of the arm portion with respect to the horizontal frame portion in the lateral direction in accordance with the worker's physique, it is possible to mount the posture maintaining port in conformity with the physique of the operator (in particular, the shoulder width of the operator) The function of the holding structure can be enhanced.

In the above configuration, it is preferable that the front and rear regulating portions capable of adjusting the position of the arm portion with respect to the transverse frame portion in the longitudinal direction are provided.

According to this configuration, since the mounting position of the arm portion with respect to the horizontal frame portion is adjusted in the forward and backward direction according to the operator's physique, the posture maintaining port can be fitted to the physique of the operator (in particular, the length of the upper arm portion of the operator) It is possible to enhance the function of the posture maintaining ball.

In the above configuration, it is preferable that the vertical frame portion is provided with a vertical adjustment portion capable of adjusting the position of the horizontal frame portion in the vertical direction.

According to this configuration, since the mounting position of the horizontal frame portion with respect to the vertical frame portion is adjusted in the vertical direction in accordance with the worker's physique, the posture maintaining port can be fitted to the physique of the operator (in particular, the worker's elongation) The function of the holding structure can be enhanced.

In the posture maintaining unit according to the present invention,

A frame portion mounted on a back portion of the operator,

A right side and a left side which are swingable up and down around the center of the left and right shafts of the right and left sides of the frame part and which are mounted on the right and left upper arm parts of the operator and forwardly extending from the right and left sides of the frame part, A left arm portion,

A resistance mechanism for imparting resistance to an operation of the right and left arm portions in the lateral direction outside,

A holding mechanism capable of switching between a permitting state permitting the arm portion to move up and down in accordance with an operation of an upper arm portion of an operator mounted on the arm portion and a holding state in which the arm portion is held at a desired position with respect to the frame portion,

According to the present invention, the frame portion is mounted on the back portion of the operator and the right and left arm portions of the posture holding tool are mounted on the right and left upper arm portions of the operator. Therefore, when the right and left arm portions are held at desired positions by operating the holding mechanism in the holding state, the operator can hold the right and left upper arm portions at the desired positions by leaving them to the right and left arm portions.

Thus, when the worker performs work on the upward flow of water, piping, and wiring in a state where the right and left upper arm portions are oriented substantially horizontally in an operation in an orchard or a building as described above, By holding the upper arm portion at a position substantially horizontally directed by the right and left arm portions and directing the right and left forearm portions upward, it is possible to work comfortably on the upper side water, the piping and the wiring.

As described above, in the case where the operator performs work in a state in which the right and left upper arm portions are oriented substantially horizontally and the right and left forearm portions are directed upward, when the operator is tired, the right and left upper arm portions of the operator tend to descend downward In addition to this, there is a tendency to spread outward to the right and to the left side.

According to the present invention, since the resistance mechanism for imparting resistance to the operation in the lateral direction outer side of the right and left arm portions is provided, the right and left upper arm portions of the operator are exhausted, The state can be suppressed by the resistance mechanism, and work can be performed comfortably on the upward flow of water, piping, and wiring.

As described above, it is possible to obtain a posture maintaining mouth suitable for work in an orchard or a building.

Next, in Patent Document 1, the lifting force of the elastic material is increased as the elastic material is elongated (the greater the worker bends the upper body downward and downward), so that when the worker keeps the upper body bent forward and downward, There is only one angle at which the lifting force of the worker and the weight of the worker's upper body are balanced.

Thus, in Patent Document 1, in the case where the worker holds the upper body bent forward and downward, when lifting the upper body at an angle smaller than the angle of one position described above, the worker does not have enough lifting force of the elastic material, It is necessary to apply force to the waist so that the upper body does not descend. On the contrary, when the upper body is held at an angle larger than the above-mentioned angle, the lifting force of the elastic material is excessively strong for the operator, so the worker needs to apply a force to the waist to prevent the upper body from rising.

According to the present invention, as the operator moves the right and left upper arm parts in accordance with the allowable state of the holding mechanism in a state in which the posture holding tool is mounted, the right and left arm parts move to follow the right and left upper arm parts .

Thus, since the right and left arm portions do not become resistance to the operation of the right and left upper arm portions, the operator can comfortably move the right and left upper arm portions while the posture maintaining means is mounted. So that the workability of the posture maintaining mouth can be improved.

Next, when the operator moves the right and left upper arm parts to desired positions and then the operator operates the holding mechanism to the holding state, the right and left arm parts are held at desired positions, So that it can be kept in a desired position comfortably.

In this case, even if the operator operates the retaining mechanism to the retained state after the operator has moved the right and left upper arm portions to another desired position, the operator can comfortably maintain the right and left upper arm portions at other desired positions as described above , The operator can comfortably hold the right and left upper arm portions at various desired positions in a state in which the posture maintaining tool is mounted, thereby improving the workability of the posture maintaining tool.

In addition, since it is not necessary to provide an electric cylinder or the like for driving the arm portion in the posture maintaining mouth, a lightweight and inexpensive posture holding mouth is obtained.

In the above configuration, it is preferable that the resistance mechanism is constituted by a spring that presses the right and left arm portions to the left and right center sides of the frame portion.

According to this configuration, the resistance mechanism is constituted by a spring, and the displacement of the spring for urging the right and left arm portions to the left and right center sides of the frame portion becomes smaller as the right and left upper arm portions of the operator spread outward to the right and left lateral sides (Resistance) of the spring is increased, so that it is possible to suppress a situation in which the operator is exhausted and the right and left upper arm portions of the operator are spread outward in the right and left lateral directions, thereby improving the workability of the posture maintaining mouth have.

In the above configuration, the right and left arm portions are inclined postures where the right and left arm portions approach each other as the right and left arm portions are spaced forward from the frame portion in a state in which the right and left upper arm portions of the operator are not mounted on the right and left arm portions, It is suitable if a spring is installed.

According to this configuration, when the operator extends the right and left upper arm parts in parallel while the posture maintaining tool is mounted, displacement of the spring occurs and the urging force of the spring for urging the right and left arm parts toward the left- Occurs.

Thus, the right and left arm portions are pressed toward the right and left central portions of the frame portion in the normal state in which the right and left upper arm portions extend in parallel, and the pressing force of the springs is applied to the right and left upper arm portions of the operator. It is possible to stably perform the operation in the normal state in which the right and left upper arm parts extend in parallel to the right and left sides while suppressing the state in which the upper and lower left arm parts extend to the right and left lateral outer sides, .

In the above arrangement, the leaf spring is provided as the spring to constitute the frame portion,

It is preferable that the right and left arm portions are pressed toward the right and left central portions of the frame portion by bending the plate spring to bend the entire frame portion.

According to this configuration, since the frame portion has a function of pressing the right and left arm portions toward the left and right center sides of the frame portion without providing a separate spring for pressing the right and left arm portions to the left and right center sides of the frame portion, .

In the above configuration, the right and left arm portions are located outside the right and left upper arm portions of the operator, and a U-shaped receiving portion opened toward the left and right center sides of the frame portions is provided on the right and left arm portions Respectively,

It is preferable that the right and left arm portions are mounted on the right and left upper arm portions of the operator by inserting the right and left upper arm portions of the operator into the receiving portions of the right and left arm portions.

According to the present configuration, the right and left arm portions are located outside the right and left upper arm portions of the operator in a state in which the posture holding tool is mounted, and the accommodating portions, which are opened toward the right and left central sides of the frame portion, Right and left arm portions.

Thus, when the right and left upper arm portions of the operator are mounted on the right and left arm portions, the operator moves the right and left upper arm portions laterally outward and inserts them into the receiving portions of the right and left arm portions, The state of being mounted on the right and left arm portions is facilitated, so that the workability of the posture maintaining mouth can be improved.

If the right and left arm portions are pressed to the right and left central portions of the frame portion and the pressing force of the springs is applied to the right and left upper arm portions of the operator in a normal state in which the operator extends the right and left upper arm portions in parallel, The upper arm portion is in a state in which it is difficult for the upper arm portion to escape from the accommodating portion of the right and left arm portions and the mounting state to the right and left arm portions becomes secure.

Fig. 1 is a perspective view of a state in which a worker mounts the posture maintaining mouth as viewed from the front. Fig.
Fig. 2 is a perspective view of the posture maintaining mechanism viewed from the rear. Fig.
Fig. 3 is a perspective view of the lower frame portion, the vertical frame portion, the first and second horizontal frame portions, the hood member, the cover, and the like of the posture holding aperture as viewed from the rear upper side.
4 is an exploded perspective view of the vertical frame portion, the first and second horizontal frame portions, the temporary fixing member, the support member,
5 is an exploded perspective view of the second horizontal frame portion, the substrate, the first arm portion, the holding mechanism, and the like of the posture maintaining mouth as viewed from front and above.
Fig. 6 is a perspective view of a substrate and a holding mechanism of the posture maintaining sphere as viewed from the front and above. Fig.
7 is an exploded perspective view of the second horizontal frame portion, the first and second arm portions, the vertical receiving portion, the lower receiving portion, the upper receiving portion, the operation portion,
8A is a perspective view showing the first and second arm portions, the longitudinal accommodating portion, the lower accommodating portion, the upper accommodating portion, the manipulating portion, and the like of the posture maintaining aperture as viewed from front and above.
Fig. 8B is a perspective view of the first and second arm portions, the longitudinal accommodating portion, the lower accommodating portion, the upper accommodating portion, the manipulating portion, and the like of the posture maintaining aperture as viewed from front and above.
9 is a side view of the left side of the state in which the operator holds the posture maintaining tool.
Fig. 10 is a plan view of the posture maintaining aperture viewed from above. Fig.
Fig. 11 is an exploded perspective view of a second horizontal frame portion, a first arm portion, an electromagnetic clutch, a one-way clutch, and the like of the first embodiment of the present invention as viewed from front and above; Fig.

[One]

As shown in Figs. 1, 2 and 3, the posture maintaining device includes a lower frame portion 1 (corresponding to the body portion and the frame portion), a right and left vertical frame portion 2 (corresponding to the body portion) And right and left first horizontal frame portions 3 (corresponding to a body portion, a horizontal frame portion, and a frame portion). The posture maintaining device includes right and left second horizontal frame portions 4 (corresponding to the body portion, the horizontal frame portion, and the frame portion), right and left first arm portions 5 (corresponding to the arm portions) A left second arm portion 6 (corresponding to the arm portion), and right and left holding mechanisms 7 (see Fig. 6). The posture maintaining means includes right and left side belts 8 and 9 for fixing to the waist of an operator, right and left belts 10 for fixing to the shoulder portion of the worker, and the like.

Hereinafter, the structure of each part will be described. In this case, "top", "bottom", "right", "left", "front", and "rear" in the description indicate the state in which the operator holds the posture maintaining mechanism, It means after.

[2]

The lower frame portion 1 and the right and left vertical frame portions 2 will be described.

1, 2, and 3, the lower frame portion 1 is formed in a sheet metal box shape and includes a battery 18 for supplying power to the holding mechanism 7 (solenoid 23) And a belt 8 made of woven fabric is attached to the right and left lateral portions of the lower frame portion 1 for fixing to the waist of the worker. A cover 15 made of synthetic resin is attached to the rear side of the lower frame part 1 and the cover 15 covers the mounting part of the battery 18 and the belt 8 on the lower frame part 1, And a connection portion of the vertical frame portion 2 to be described later to the lower frame portion 1 is covered.

As shown in Figs. 2, 3 and 4, the vertical frame portion 2 made of sheet metal is connected to the right and left lateral portions of the lower frame portion 1 at predetermined intervals in the left-right direction and extends upward have. (Equivalent to a frame portion, a resistance mechanism, a spring, and a leaf spring) of a flat plate shape and made of sheet metal (plate spring) are connected across the upper portions of the right and left vertical frame portions 2, (Corresponding to a frame portion, a resistance mechanism, a spring, and a leaf spring) which is a flat plate-shaped and arcuate flat plate member (made of a leaf spring) is disposed on the upper portion of the right and left vertical frame portions 2, As shown in Fig.

A pad 9 having a rectangular shape as viewed from the front is formed on the lower frame portion 1, the right and left vertical frame portions 2 and the mounting member 11 as shown in Figs. 2, 3 and 4 Respectively. The right side belt 10 is mounted on the upper part (pad 9) of the right vertical frame part 2 and the belt 8 and the upper part (pad 9) of the left vertical frame part 2 and the belt 8 The left belt 10 is mounted.

[3]

Next, the right and left first horizontal frame parts 3 and the right and left second horizontal frame parts 4 will be described.

As shown in Figs. 2, 3 and 4, the first horizontal frame portion 3 made of metal is connected to the vertical frame portion 2 by the bolts 13 and extends outward in the right and left lateral directions have. An elongated hole 2a (corresponding to the vertical adjustment portion) is formed on the upper portion of the vertical frame portion 2 so that the bolt 13 is inserted into the elongated hole 2a of the vertical frame portion 2 and fastened And the position of the first horizontal frame part 3 with respect to the vertical frame part 2 can be adjusted up and down along the long hole 2a of the vertical frame part 2. [

As shown in Figs. 3 and 4, a rigid synthetic resin block-like support member 14 is mounted on the base portion 4a of the second horizontal frame portion 4 made of sheet metal, The base portion 4a and the support member 14 of the frame portion 4 are connected to the first horizontal frame portion 3 by the bolts 16 so that the second horizontal frame portion 4 is connected to the first horizontal frame portion 3. [ (Left) transversely outwardly obliquely forward from the seat back 3.

3 and 4, the base portion 4a and the support member 14 (corresponding to the front and rear regulating portions) of the second horizontal frame portion 4 have elongated holes 4b in the left and right direction And the bolt 16 is inserted into the elongated holes 4b and 14a of the second horizontal frame portion 4 and the support member 14 and fastened thereto .

As a result, the position of the second horizontal frame portion 4 with respect to the first horizontal frame portion 3 can be adjusted to the left and right along the long holes 4b, 14a of the second horizontal frame portion 4 and the support member 14 And the position of the first and second arm portions 5 and 6 (supported by the second horizontal frame portion 4) with respect to the first horizontal frame portion 3 can be adjusted in the direction (lateral direction) It can be adjusted in the lateral direction (lateral direction).

2 and 3, a cover 17 made of synthetic resin is attached to the rear side of the first horizontal frame portion 3. As shown in Fig. The cover 17 covers the connection portion of the vertical members 2 and the base member 4a of the second horizontal frame portion 4 and the support member 14 of the viscous members 11 and 12.

[4]

Next, the right and left first arm portions 5 and the holding mechanism 7 will be described.

The substrate 19 is connected to the front portion 4c of the second horizontal frame portion 4 so that the front portion 4c of the second horizontal frame portion 4 and the front portion 4c of the second horizontal frame portion 4, And convex portions 19b are formed in the inner peripheral portion of the opening 19a of the substrate 19. The convex portion 19b is formed in the concave portion 19a.

The disc portion 5b of the first arm portion 5 is attached to the base portion 5a of the first arm portion 5 and the disc portion 5b of the first arm portion 5 is fixed to the base portion 5a of the first arm portion 5 as shown in Figs. 2 are inserted from the inside into the front portion 4c of the horizontal frame portion 4 and the openings 4d and 19a of the substrate 19 so that the disc portion 5b of the first arm portion 5 is inserted into the openings 4d and 19a of the substrate 19 And contacts the inner side of the convex portion 19b. A ring shaped substrate 5c is provided so that the bolt 38 is fastened to the base portion 5a, the circular plate portion 5b and the substrate 5c of the first arm portion 5, The convex portion 19b of the first arm portion 5 is sandwiched by the disc portion 5b of the first arm portion 5 and the substrate 5c.

5 and 6, the first arm portion 5 is located on the left and right sides of the front portion 4c of the second horizontal frame portion 4 and the openings 4d and 19a of the substrate 19, And is supported so as to swing up and down around the center P1 of the shaft. The convex portion 19b of the substrate 19 is sandwiched by the disk portion 5b and the substrate 5c of the first arm portion 5 and the point where the to-be-engaged portion 20 (Connected to the substrate 5c of the arm portion 5) is in contact with the rim portion of the opening 19a of the substrate 19, the first arm portion 5 is connected to the second horizontal frame portion 4 And the substrate 19 as shown in Fig.

The engaging portion 20 (corresponding to the one-way mechanism) having a plurality of oblique gear teeth is fixed to the base 5c of the first arm portion 5 by bolts 38 as shown in Figs. 5 and 6, And an engaging pawl portion 21 (corresponding to a one-way mechanism) is pivotally supported around the center P2 of the left and right shafts of the substrate 19. The engaging pawl portion 21 is engaged with the engaging portion 20 And a spring 22 (corresponding to a unidirectional mechanism) for pressing against the engagement side.

5 and 6, a solenoid 23 (corresponding to a release mechanism) is fixed to the substrate 19, and a connection member 24 is provided between the coupling claw portion 21 and the solenoid 23 It is connected. The solenoid 23 is supplied with power from the battery 18 provided in the lower frame portion 1. The solenoid 23 is energized by an operation signal from a limit switch (not shown) of the operation portion 31 And the shrinking operation is performed.

5 and 6, when the first arm portion 5 is operated upward in the range where the engaging claw portion 21 is engaged with the engaged portion 20, the spring 22 The engagement pawl portion 21 is retracted from the engaged portion 20 and is engaged with the engaged portion 20 again so that the upward movement of the first arm portion 5 is permitted Permission status).

Even if the first arm portion 5 is to be downwardly moved in the range where the engaging claw portion 21 is engaged with the engageable portion 20, the engagement of the engaging claw portion 21 with the engaged portion 20 The operation of the first arm portion 5 to the downward direction is blocked (maintained state). When the solenoid 23 is energized and contracted to operate the engaging pawl portion 21 away from the engaged portion 20, the first arm portion 5 can be freely operated upwards and downwards.

The retaining mechanism 7 is constituted by the engaging portion 20, the engaging claw portion 21, the spring 22 and the solenoid 23 as shown in Figs. 2, 5 and 6. A synthetic resin cover 25 is mounted on the transversely outer side portion of the board 19 and the cover 25 covers the engaging portion 20, the engagement claw portion 21, the spring 22, and the solenoid 23 The disk portion 5b of the first arm portion 5, the substrate 5c, and the like are covered. A synthetic resin cover 39 is mounted on the inner side of the base portion 5a of the first arm portion 5. [

[5]

Next, the right and left second arm portions 6 will be described.

The rail portion 6a is formed at the upper and lower edges of the second arm portion 6 and the upper and lower rail portions 6a of the second arm portion 6 The second arm portion 6 is fitted in the upper and lower frame portions 5d of the first arm portion 5 so that the second arm portion 6 can slide along the longitudinal direction of the first arm portion 5 . A bolt 26 having a knob for fixing the second arm portion 6 at a desired mounting position with respect to the first arm portion 5 is provided. By thus adjusting the position of the second arm portion 6 with respect to the first arm portion 5 in the forward and backward direction, the position of the second arm portion 6 with respect to the first lateral frame portion 3 is changed in the forward and backward directions .

The vertical receiving portion 27 (corresponding to the receiving portion) is provided in the front portion of the second arm portion 6 as shown in Figs. 2, 7 and 8A, and the vertical receiving portion 27 A lower receiving portion 28 (corresponding to the receiving portion) extending in a cantilevered manner in the transverse direction inside. Pads 32, 33, and 34 are mounted on the transversely inner side portion of the second arm portion 6, the transversely inner side portion of the longitudinal accommodating portion 27, and the upper surface portion of the lower accommodating portion 28. [

An L-shaped upper accommodating portion 29 (corresponding to the accommodating portion) is swingable around the center P3 of the longitudinal axis of the upper portion of the longitudinal accommodating portion 27 as shown in Figs. 2, 7 and 8A A spring 30 for supporting the upper accommodating portion 29 downward is provided and the upper accommodating portion 29 is moved downward from the position shown in Fig. And can swing upward against the spring 30 as shown in Fig. 8B. Thus, the vertical receiving portion 27, the lower receiving portion 28, and the upper receiving portion 29 constitute a receiving portion of a U-shape (C-shaped) opened toward the left and right central sides.

The operating portion 31 is supported so as to be swingable about the center P4 of the inclined shaft of the front portion of the upper accommodating portion 29 and the operating portion 31 is pushed downward by a spring And is pressurized. The operating portion 31 can not swing downward from the position shown in Fig. 8A by the stopper portion (not shown) of the upper accommodating portion 29, and can not pivot downward from the position shown in Fig. And a limit switch (not shown) for detecting the upward swinging of the operating portion 31 is provided in the upper accommodating portion 29. As shown in Fig.

[6]

Next, mounting of the posture maintaining mouth will be described.

As shown in Figs. 1 and 2, the operator places the belt 10 on the shoulder portion of the worker by placing the posture holding tool on the back, putting the pad 9 against the back portion of the worker, 1) to the waist of the worker. Since the belt 8 is provided with a face fastener (not shown) (trade name: Magic Tape (registered trademark)), the operator winds the belt 8 around the waist of the worker, 1 and the belt 8 to the waist of the worker.

Thereby, the lower frame part 1 and the belt 8 are attached to the waist of the operator, the vertical frame part 2 extends upward from the lower frame part 1 along the back part of the operator, The first and second horizontal frame portions 3 and 4 extend from the upper frame portion 2 in the lateral direction along the shoulder portion of the operator and the lower frame portion 1, the vertical frame portion 2, The second horizontal frame portions 3 and 4 are mounted on the body portion of the operator.

The upper receiving portion 29 is operated upward and the upper arm portion of the worker is placed in the vertical receiving portion 27. [ The lower accommodating portion 28 and the upper accommodating portion 29 to operate the upper accommodating portion 29 downward. As a result, the first and second arm portions 5 and 6 are mounted on the upper arm of the operator.

In this case, as shown in Figs. 1 and 2, the second horizontal frame portion 4 (center P1 of the left and right shafts) is located at approximately the same height as the shoulder portion of the worker, The mounting position of the first horizontal frame portion 3 with respect to the vertical frame portion 2 is adjusted in advance in the vertical direction (refer to [3] The mounting position of the frame portion 4 is adjusted in advance in the left-right direction (the lateral direction) (see [3] in the preceding paragraph).

The elbow portion of the worker is located slightly forward of the vertical accommodating portion 27, the lower accommodating portion 28 and the upper accommodating portion 29 so as to be able to perform the bending operation of the forearm of the worker, 3) of the second arm portion 6 is adjusted in advance in the forward and backward directions (see [5]).

As shown by the solid line in Fig. 10, when the operator does not insert the posture maintaining member in the vertical accommodating portion 27, the lower accommodating portion 28 and the upper accommodating portion 29 The right and left vertical frame portions 2 are formed so that the right and left first and second arm portions 5 and 6 are inclined toward each other as they are spaced forward from the second horizontal frame portion 4 in the state [ And the connection state of the mounting members 11 and 12 is 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 operator in a state in which the operator directs the upper arm portion forward, And the first and second arm portions 5 and 6 (the vertical accommodating portion 27, the lower accommodating portion 28 and the upper accommodating portion 29) 27, the lower accommodating portion 28, and the upper accommodating portion 29. The posture maintaining member can be easily lifted by gripping the provisional member 12 by the provision of the temporary fixing member 12 in the state where the operator does not mount the posture maintaining member.

[7]

Next, the operation of the posture maintenance tool will be described (first).

As shown in Figs. 1 and 2, even when the worker places the upper arm in the second arm portion 6 (the lower accommodating portion 28) while the operator holds the posture maintaining tool, The engaging pawl portion 21 is engaged with the engaged portion 20 so that the downward movement of the first and second arm portions 5 and 6 is blocked so that the operator can keep the forearm portion at a desired position have.

In this case, as shown in Figs. 1 and 2, the load applied from the upper arm portion 6 to the lower arm portion 6 (the lower accommodating portion 28) of the operator is the same as the load applied to the first arm portion 5, The belt 8 and the pad 9 through the two horizontal frame portions 3 and 4, the vertical frame portion 2 and the belt 10 so that the waist portion and the back portion of the worker And it is supported and supported by the shoulder part.

Particularly, by attaching the belt 10 to the shoulder portion of the worker, the position of the vertical frame portion 2 and the first horizontal frame portion 3 in the horizontal direction is determined at the back portion of the operator (2) and the first horizontal frame part (3) do not move in the lateral direction). This allows the vertical frame portion 2 and the first horizontal frame portion 3 to follow the operator so as not to be distanced from the back portion of the operator. Thus, the second arm portion 6 (lower receiving portion 28) The belt 8 and the pad 9 without wasting the load applied to the lower frame portion 1, the belt 8 and the pad 9 without waste.

Next, when the operator moves the upper arm part upward (when the first and second arm parts 5 and 6 are operated upward), the engaging claw part 21 comes into contact with the engaged part 20 against the spring 22, The first arm portion 5 and the second arm portion 5 are engaged with each other so that the first arm portion 5 is allowed to move upward and the first and second arm portions 5, To move upwards so as to follow the < / RTI >

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 moves upward from the vertical receiving portion 27, the lower receiving portion 28 and the upper receiving portion 29 The pressing force of the spring 30 is set such that the first and second arm portions 5 and 6 follow the upper arm portion of the operator.

Next, when the operator stops the upper arm portion after moving the upper arm portion upward as described above, the engaging claw portion 21 is engaged with the engaged portion 20 as shown in Fig. 6, 2 operation of the arm portions 5 and 6 is blocked, and the operator can keep the upper arm portion at a desired position (a position where the operator stops the upper arm portion after moving the upper arm portion upward).

Next, when the operator bends the forearm part toward the upper arm side and operates the operating part 31 upward by the forearm, the solenoid 23 is energized by the operation signal of the limit switch for detecting the upward swinging of the operating part 31 , The solenoid 23 contracts and the engaging pawl portion 21 is separated from the engaged portion 20.

Thus, when the operator moves the upper arm part upward and downward, the first and second arm parts 5, 6 move up and down so as to follow the upper arm part of the worker, The energization of the solenoid 23 is stopped and the engaging pawl portion 21 is engaged with the engaged portion 20 by the urging force of the spring 22 as described above.

[8]

Next, the operation of the posture maintenance tool will be described (second).

As shown in Figs. 5 and 6, the area where the gear tooth exists in the engaged portion 20 is limited, and the area where the gear tooth does not exist in the engaged portion 20 (the engagement claw portion 21 are not coupled to the engaged portion 20 (gear teeth)) exist on the upper side and the lower side of the engaged portion 20. The engagement claw portion 21 does not function regardless of the solenoid 23 in the region where the gear tooth is not present in the engaged portion 20. [

In this case, as shown in Fig. 9, in the direction perpendicular to the extending direction of the vertical frame portion 2, that is, the horizontal position A1 in the state where the worker mounts the posture maintaining port, When the first and second arm portions 5 and 6 are moved to the upper set position A2, the engaging pawl 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 downwardly set position A3 set downward by a predetermined angle with respect to the horizontal position A1, the engaging claw portions 21 are positioned at the lower end portions of the engaged portions 20 State.

9, since the engaging pawl portion 21 is not engaged with the engaged portion 20 in the range above the upper set position A2 and below the lower set position A3, (The first and second arm portions 5 and 6) can be freely moved upward and downward regardless of the operation of the operating portion 31 (regardless of the operation of the operating portion 31, Corresponding to a state allowing the operation of the first and second arm portions 5 and 6).

In this case, the upper setting position A2 is set to a higher position such that the angle between the horizontal position A1 and the upper setting position A2 is larger than the angle between the horizontal position A1 and the lower setting position A3.

In a case where the first and second arm portions 5 and 6 are not mounted on the upper arm portion of the operator, by placing the first and second arm portions 5 and 6 at the upper set position A2 The first and second arm portions 5 and 6 are not lowered from the upwardly set position A2 by being engaged with the upper end portion of the engageable portion 20 so that the worker can freely perform the work.

When the operator is tired in a state in which the posture holding port is mounted, in addition to the tendency of the operator's upper arm to descend downward, there is a tendency to widen toward the right side (left side) in the lateral direction.

In this case, as shown by the one-dot chain line in Fig. 10, when the operator's upper arm (the first and second arm portions 5 and 6) tries to spread to the right side (left side) The vertical frame portion 2 is bent (bent) around the center of the upper and lower shafts along with the bending of the vertical frame portion 2 By the resistance, the state in which the upper arm portion (the first and second arm portions 5 and 6) of the operator tries to spread outward to the right side (left side) is suppressed.

[Other embodiment of the invention]

In place of the engaging portion 20, the engaging claw portion 21, the spring 22, the solenoid 23, etc. of the above-mentioned [Detailed Description of the Invention], the holding mechanism 7 .

11, a support shaft 35 is supported on the second horizontal frame portion 4 through a friction type electromagnetic clutch 36 (corresponding to a connection mechanism), and the first and second arm portions 31, Through a one-way clutch 37 (equivalent to a one-way mechanism) that allows the operation of the first and second arm portions 5 and 6 to be operated upward and prevents the operation to be performed below the first and second arm portions 5 and 6, 1 and the second arm portions 5, 6 are mounted on the support shaft 35.

11, the electromagnetic clutch 36 is pressed in a connected state by a spring (not shown), and in the connected state of the electromagnetic clutch 36, So that it is not rotatable in the portion (4). In this state, the upper arm portion (the first and second arm portions 5 and 6) of the operator can be moved upward by the function of the one-way clutch 37. [ The operation of the first and second arm portions 5 and 6 toward the downward direction is performed by the function of the one-way clutch 37 when the operator places the upper arm portion in the second arm portion 6 (lower accommodating portion 28) The operator can keep the upper arm at a desired position.

As shown in Fig. 11, when the operator operates the operating portion 31 upward, the electromagnetic clutch 36 is energized to operate the electromagnetic clutch 36 in the disconnected state. In this state, the one-way clutch 37 does not function and the support shaft 35 freely rotates about the center P1 of the right and left shafts of the second horizontal frame portion 4. [ Thus, when the worker moves the upper arm part upward and downward, the first and second arm parts 5, 6 move upward and downward to follow the upper arm part of the worker, and when the worker moves the operation part 31 upward The energization of the electromagnetic clutch 36 is stopped and the electromagnetic clutch 36 is brought into a connected state.

A clutch (not shown) of a dog clutch type or a connection clutch (not shown) which engages a pin or a claw portion with a ring gear (not shown) is used instead of the frictional electromagnetic clutch 36 described above, An engaging type connection mechanism may be constructed.

[Second embodiment of the invention]

In the first embodiment of the present invention, the operating portion 31 is not provided in the upper accommodating portion 29 but the operating portion 31 is provided in the vertical accommodating portion 27 or the lower accommodating portion 28 as shown in Fig. A harness (not shown) is extended from the second horizontal frame portion 4 or the second arm portion 6 and the operating portion 31 is connected to the end portion of the harness so that the operator grasps the operating portion 31 with the palm of the hand .

[Third embodiment of the invention]

In the second alternative embodiment of the invention, the upper accommodating portion 29 is swingable around the center P3 of the longitudinal axis, The upper receiving portion 29 may be fixed to the vertical receiving portion 27 so as not to swing. The operator can set the upper arm portion 27 in the vertical accommodating portion 27, the lower accommodating portion 28, and the upper accommodating portion 28, So that it can be easily inserted into the recess 29.

[Fourth embodiment of the invention]

In the first to third embodiments of the present invention, the support member 14 (corresponding to the front-rear adjusting unit) is formed to have a thickness of The positions of the second horizontal frame portion 4 and the first and second arm portions 5 and 6 with respect to the first horizontal frame portion 3 may be adjusted in the forward and backward directions.

[Fifth Embodiment of the Invention]

[Other Embodiment of the Invention] - [Fourth Embodiment of the Invention] In the fourth embodiment of the invention, the longitudinal accommodating portion 27, the lower accommodating portion 28, The receiving portion 29 may be integrally formed so that the vertical angle can be changed around the center of the left and right shafts of the front portion of the second arm portion 6. [

[Sixth embodiment of the invention]

[Other Embodiment of the Invention] - [Fifth Embodiment of the Invention] In the fifth embodiment of the invention, the lower frame portion 1, the vertical frame portion 2, The lower frame part 1 and the vertical frame part 2 are removed so as not to attach the first and second horizontal frame parts 3 and 4 to the body part of the operator so that the first and second horizontal frame parts 3 4 may be mounted on the back or shoulder of the operator and the first and second arm portions 5, 6 may be mounted on the upper arm of the operator.

The structure of the first and second arm portions 5 and 6 can be changed so that the first and second arm portions 5 and 6 can be mounted on the femoral portion of the operator and the lower frame portion 1, The frame portion 2 and the first and second horizontal frame portions 3 and 4 are vertically inverted and mounted on the body portion of the operator so that the first and second arm portions 5 and 6 are mounted on the thighs of the operator .

According to this configuration, the upper body of the worker is allowed to move with respect to the thigh of the worker, the worker's upper body is prevented from moving downward, and the upper body of the worker is supported, Can be reduced.

In addition, in the above-described [other aspects of the invention] - [fifth embodiment of the invention], instead of the leaf spring- But may be configured as follows.

The right and left portions of the right and left side portions of the upper and lower shafts 11 and 12 are constituted by a hinge portion for pivotally connecting the right and left portions and the right and left portions about the center of the upper and lower shafts To the vertical frame portion (2) or the first horizontal frame portion (3). The right and left first and second horizontal frame portions 3 and 4 and the first and second arm portions 5 and 6 can be moved toward and away from each other by the hinge portions of the temporary fixing members 11 and 12 And a coil spring (corresponding to a resistance mechanism and a spring) is mounted on the hinge portion of the mounting members 11 and 12.

Thereby, in the state in which the operator does not insert the posture maintaining port (the state in which the upper arm portion of the operator is not inserted into the longitudinal accommodating portion 27, the lower accommodating portion 28 and the upper accommodating portion 29) 12 and the coil spring of the hinge portion of the leg members 11, 12 so that the left and right first and second arm portions 5, 6 are inclined toward each other as they are spaced forward from the first lateral frame portion 3, Setting.

When the operator tries to widen to the right (left side) lateral side in addition to the fact that the operator tries to descend the upper arm portion downward while wearing the posture maintaining port, the coil spring of the hinge portion of the leg portions 11, (The first and second arm portions 5 and 6) of the operator are deformed due to the resistance of the vertical frame portion 2 and the resistance of the vertical frame portion 2 being twisted around the center of the vertical axis The state in which it tends to spread outward in the lateral direction of the right side (left side) is suppressed.

The first and second horizontal frame portions 3 and 4 are attached to the femoral portion of the operator and the first and second arm portions 5 and 6 are closed by dismounting the lower frame portion 1 and the vertical frame portion 2. [ So that the first and second arm portions 5 and 6 can be attached to the calf portion of the worker.

With this configuration, the upper portion of the worker's thighs is allowed to move with respect to the calf portion of the worker, the operation of the thighs of the worker to the downward portion is inhibited, and the upper body of the worker is supported. Can be reduced.

[Seventh embodiment of the invention]

In the first and second embodiments of the present invention, the first and second horizontal frame portions 3 and 4 are provided on both the right and left sides, The first and second horizontal frame portions 3 and 4 and the first and second arm portions 5 and 6 and the like that do not include the first and second arm portions 5 and 6, May be provided on only the right side or the left side.

The present invention can be applied to an attitude maintenance port that is used by an operator when working in an orchard or a building and reduces the load on the upper arm portion, the waist portion, and the knee portion of the operator.

1: Lower frame part (body part, frame part)
2: vertical frame portion (main body portion, frame portion)
2a: Long hole (vertical adjustment part)
3: first horizontal frame portion (main body portion, horizontal frame portion, frame portion)
4: second horizontal frame portion (main body portion, horizontal frame portion, frame portion)
4b: Long hole (horizontal adjustment part)
5: first arm portion (arm portion)
6: Second arm portion (arm portion)
6a: rail part (front and rear control part)
7: Retainer
10: Belt
11: Hysteresis member (frame part, resistance mechanism, spring, plate spring)
12: Hybrid member (frame part, resistance mechanism, spring, plate spring)
14: Support member (front and rear control unit)
14a: Long hole (horizontal adjustment part)
20: Connected part (unidirectional mechanism)
21: engaging claw (unidirectional mechanism)
22: spring (one-way mechanism)
23: Solenoid (release mechanism)
27: vertical receiving portion (receiving portion)
28: Lower receiving portion (receiving portion)
29: Upper reception part (reception part)
31:
36: electromagnetic clutch (connection mechanism)
37: One-way clutch (one-way mechanism)
A1: Horizontal position
A2: Upward position
A3: Downward position
P1: center of left and right axis

Claims

A main body mounted to an operator,
An arm portion provided in the main body portion and mounted on an arm portion extending from a shoulder portion of an operator close to the main body portion;
A retaining mechanism capable of switching between a permitting state permitting the operation of the arm portion accompanying the operation of the arm portion of the operator mounted on the arm portion and a retaining state of keeping the arm portion at an arbitrary position with respect to the body portion,
And an operation unit that operates the holding mechanism by being operated by an operator,
Wherein the arm portion is mounted on an upper arm portion of an operator,
The arm portion extends forward from the shoulder portion of the operator and the end portion of the arm portion is positioned closer to the shoulder portion than the elbow portion of the operator so that the forearm portion of the operator can freely move,
Wherein the operating portion is configured such that the forearm is bent toward the upper arm portion and is operated upward by the forearm portion.

The method according to claim 1,
Wherein the holding mechanism comprises:
A one-way mechanism for permitting the upward movement of the arm portion accompanying the operation of the arm portion of the operator mounted on the arm portion and for holding the arm portion at an arbitrary position by inhibiting the operation of the arm portion downward;
And a release mechanism for releasing the inhibition of the operation of the arm portion by the unidirectional mechanism to the downward direction and allowing the operation of the arm portion to be performed downward,
And the operating portion operates the releasing mechanism.

The method according to claim 1,
Wherein the holding mechanism comprises:
A one-way mechanism for permitting the upward movement of the arm portion accompanying the operation of the arm portion of the operator mounted on the arm portion and for holding the arm portion at an arbitrary position by inhibiting the operation of the arm portion downward;
A connection state in which the main body portion and the arm portion are connected to each other so that the one-way mechanism functions, and a connection mechanism capable of switching the main body portion and the arm portion to a cutoff state for allowing the operation of the arm portion,
And the operation section operates the connection mechanism.

4. The method according to any one of claims 1 to 3,
And the main body portion is mounted to a body portion or a shoulder portion of an operator.

5. The method of claim 4,
Wherein the operating portion is provided in the arm portion so as to be operated by the operation of the forearm portion of the operator.

5. The method of claim 4,
Wherein the holding mechanism is configured to allow the operation of the arm portion in a range above the upwardly set position set upward from the horizontal position regardless of the operation of the operating portion.

5. The method of claim 4,
Wherein the holding mechanism is configured to allow the operation of the arm portion in a range lower than the downwardly set position set downward from the horizontal position, regardless of the operation of the operating portion.

A main body portion wound around the waist of the worker to be mounted,
A vertical frame portion extending upward from the body portion along the back portion of the operator,
A transverse frame portion extending transversely along the shoulder portion of the operator from the vertical frame portion,
An arm portion mounted on an upper arm of a worker so as to be pivotally supported up and down around the center of the left and right shafts of the horizontal frame portion and extending forward;
A retaining mechanism capable of switching between a permitting state permitting operation of the arm portion accompanying an operation of an upper arm portion of an operator mounted on the arm portion and a retaining state of keeping the arm portion at an arbitrary position with respect to the body portion,
And 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 positioned closer to the shoulder portion than the elbow portion of the operator so that the forearm portion of the operator can freely move,
And the operating portion is provided at an end of the arm portion.

9. The method of claim 8,
And a belt which is mounted on a shoulder portion of an operator and which prevents the vertical frame portion and the horizontal frame portion from being separated from the back portion of the operator.

10. The method according to claim 8 or 9,
And a horizontal adjustment portion capable of adjusting a position of the arm portion with respect to the horizontal frame portion in the horizontal direction.

10. The method according to claim 8 or 9,
Rear direction adjusting portion capable of adjusting the position of the arm portion with respect to the horizontal frame portion in the forward and backward directions.

10. The method according to claim 8 or 9,
And an up / down adjuster capable of adjusting a position of the horizontal frame part with respect to the vertical frame part in a vertical direction.

10. The method according to claim 8 or 9,
Wherein the holding mechanism is configured to allow the operation of the arm portion in a range above the upwardly set position set upward from the horizontal position regardless of the operation of the operating portion.

10. The method according to claim 8 or 9,
Wherein the holding mechanism is configured to allow the operation of the arm portion in a range lower than the downwardly set position set downward from the horizontal position, regardless of the operation of the operating portion.

A frame portion mounted on a back portion of the operator,
A right and left upper arm extending forward from the right and left sides of the frame portion and mounted on right and left upper arm portions of the operator and swinging up and down around the center of the right and left axis portions of the frame portion, The arm parts,
A resistance mechanism for imparting resistance to an operation of the right and left arm portions in the lateral direction outside,
A holding mechanism capable of switching between a permitting state permitting the arm portion to move up and down in accordance with an operation of an upper arm of an operator mounted on the arm portion and a holding state in which the arm portion is held at an arbitrary position with respect to the frame portion,
And an operation unit that operates the holding mechanism by being operated by an operator,
And the resistance mechanism is constituted by a spring which urges the right and left arm portions toward the left and right center sides of the frame portion.

16. The method of claim 15,
Wherein the right and left arm portions are provided with the spring so that the right and left arm portions are inclined postures where the right and left arm portions approach each other as the right and left arm portions are spaced forward from the frame portion, Posture maintenance.

17. The method according to claim 15 or 16,
And a plate spring is provided as the spring to constitute the frame portion,
And the right and left arm portions are pressed toward the right and left central portions of the frame portion by bending the entire plate portion by bending the leaf springs.

17. The method according to claim 15 or 16,
Wherein the right and left arm portions are located outside the right and left upper arm portions of the operator and the right and left arm portions are provided with a U-shaped receiving portion opened toward the left and right center sides of the frame portions,
Wherein the right and left arm portions are mounted on the right and left upper arm portions of the operator by inserting the right and left upper arm portions of the operator into the receiving portions of the right and left arm portions.