JP6792096B1 - Door handle attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate an attachment for operating a door handle or a handle itself without using fingers in a posture in which a normal adult stands straight. SOLUTION: A handle attachment (1,1A) used to open a door (20) fixed in a closed position by a latch bolt (22) and attached to a handle (23,24,25) of the door (20). , 1B, 1C, 1D, 1E), the operating part (4) that can be fixed immovably with respect to the handle (23,24,25) and the operating part (4) vertically upward or vertically upward On the other hand, with the operation unit (2), which is arranged inside the door (20) at an angle (α) of 45 ° or less by a predetermined distance and has a portion where the operator's elbow is engaged. It has a force transmitting unit (3) that connects the operating unit (4) and the operating unit (2). [Selection diagram] Fig. 3

Description

The present invention relates to a handle attachment and a door handle for attaching to a door handle that rotates and opens and closes.

Normally, the door handle is opened and closed by grasping it with a hand, especially with a finger. A typical door handle that rotates to open and close is mounted at a distance of several cm from the side of the door opposite the door rotation axis and at a height of 85 to 100 cm from the floor, and is located at the same height as the handle on the side of the door. Is provided with a latch bolt. The latch bolt is for fixing the door in the closed position, and when opening the door, the latch bolt is released by operating the handle and retracting the latch bolt into the door, and the door can be opened. ..

Contact infection is one of the transmission routes of pathogens such as viruses and bacteria. The door handle can be an opportunity to contact an unspecified number of people. Frequent disinfection of door handles or touched hands is cumbersome, and it is preferable that the door handles are not touched by fingers.

Patent Documents 1 to 3 present a specially shaped handle or an attachment attached to an existing handle in order to open and close the door handle using the portion of the arm above the wrist without using fingers.

Special Table 2008-506872 Jitsufuku No. 3-39575 Gazette Japanese Unexamined Patent Publication No. 53-70534

However, both conventional handles or handle attachments for opening and closing doors without the use of fingers are provided at normal handle height positions. Therefore, when an operator having an average adult height tries to operate them using the elbow, there is a problem that it is difficult to operate because it is necessary to bend down.

An object of the present invention is to enable a normal adult to operate a handle attachment or a door handle for operating a door handle without using fingers while standing upright.

In order to solve the above-mentioned problems, the present invention has the following configurations. The numbers in parentheses are symbols in the drawings described later and are added for reference.
(1) Aspect of the present invention is that the door (20) fixed in the closed position by the latch bolt (22) can be attached to the handle (23,24,25) of the door (20) used at least for opening. In the handle attachments (1,1A, 1B, 1C, 1D, 1E)
An actuating part (4) that can be immovably fixed to the handle (23,24,25),
Arranged vertically above the operating portion (4) or inward of the door (20) with respect to the vertically upward direction at an angle (α) of 45 ° or less by a predetermined distance, the operator An operation unit (2) having a portion with which the elbow is engaged, and
It has a force transmitting unit (3) that connects the operating unit (4) and the operating unit (2).
When the operation unit (2) is operated by the elbow of the operator, the handle (23,24,25) is operated via the force transmission unit (3) and the operation unit (4) to operate the latch bolt. The feature is that (22) is released.
(2) In the above embodiment, when the portion of the operation unit (2) with which the operator's elbow is engaged pulls the operation unit (2) horizontally away from the door (20), the elbow is It is preferable to have at least an engaging portion (2d).
(3) In the above embodiment, the portion of the operation unit (2) with which the operator's elbow is engaged is the portion (2b, 2c, 2e) with which the elbow is engaged when the operation unit (2) is rotated. ) Is preferably provided.
(4) In the above aspect, the portion of the operating portion (2) where the operator's elbow is engaged has a saddle-shaped portion, and the saddle-shaped portion is in a plane parallel to the surface of the door (20). A ridge line (2a) that draws a convex curve, a concave surface (2b) formed by gradually increasing in diameter in both directions perpendicular to the door (20) from the ridge line (2a), and both sides of the concave surface (2b). It is preferable to provide a wall portion (2d) formed by each of the peripheral portions of the above.
(5) In the above embodiment, the portion of the operation portion (2) with which the elbow portion of the operator engages is from a circular end surface located in a plane parallel to the surface of the door (20) and a peripheral edge of the circular end surface. It may be provided with a concave surface (2b) formed by gradually increasing in diameter in a direction perpendicular to the door (20) and a wall portion (2d) formed by the peripheral edge of the concave surface (2b). Suitable.
(6) In the above embodiment, the portion of the operation portion (2) with which the elbow portion of the operator engages has a substantially cylindrical convex surface (2c) having an axis in the direction perpendicular to the door (20) and a convex surface (2c). It is preferable to provide the door (20) in 2c) and the wall portion (2d) rising from the opposite end.
(7) In the above aspect, it is preferable that the handle is a lever handle, a push-pull handle, a vertical push handle, or a knob, and the operating portion (4) is configured to fit the shape of the handle. ..
(8) In the above embodiments, that the distance of the actuating portion in the vertical direction (4) and the operating unit (2) is 20 to 40 cm, Ru preferred der.

According to the present invention, an attachment for operating a door handle or the handle itself without using fingers can be operated by a normal adult in a straight standing posture. As a result, the door can be opened and closed without contaminating the fingers, and smooth operation is possible without having to bend down. In particular, in hospitals, companies, etc., the door can be opened and closed while standing upright when carrying equipment or materials, or when paying attention to contamination such as wet hands or before and after surgery. Useful for opening doors.

FIG. 1A is an external perspective view schematically showing an example of a handle attachment according to the first embodiment of the present invention together with a part of a door, and FIG. 1B is a state in which the handle attachment is not attached. It is a perspective view of the lever handle of (a). 2A is a perspective view of the handle attachment shown in FIG. 1A, FIG. 2B is a side view, and FIG. 2C is a plan view schematically. FIG. 3 shows an example of a state when the handle attachment shown in FIGS. 1 and 2 is operated. FIG. 4 is an external perspective view schematically showing an example of a handle attachment according to a second embodiment of the present invention together with a part of a door. 5 (a) is a schematic partial perspective view of an example of the handle attachment 1B according to the third embodiment of the present invention, and (b) and (c) are schematic partial perspective views of the modified form of (a). Is. FIG. 6A is an external perspective view schematically showing an example of a handle attachment according to a fourth embodiment of the present invention together with a part of a door. (B) is a perspective view of the push-pull handle of (a) in a state where the handle attachment is not attached. (C) shows another handle attachment attached to the back side of the door. FIG. 7A is an external perspective view schematically showing an example of a handle attachment according to a fifth embodiment of the present invention together with a part of a door. (B) is a perspective view of the knob of (a) in a state where the handle attachment is not attached. FIG. 8 is an external perspective view schematically showing an example of the handle attachment according to the sixth embodiment of the present invention together with a part of the door. 9 (a) is a partial perspective view schematically showing an example of the handle attachment 1F according to the seventh embodiment of the present invention, and FIG. 9 (b) is a sectional view taken along line xx of (a). (C) is a modified form. FIG. 10A is a perspective view schematically showing an embodiment in which a new handle is attached to the door, and FIG. 10B is a side view. FIG. 11A is a perspective view schematically showing another embodiment in which a new handle is attached to the door, and FIG. 11B is a side view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples. The same or similar components are designated by the same reference numerals in each embodiment. There are various types of handles such as lever handles, push-pull handles, and knobs. Here, an instrument used by attaching to an existing handle is referred to as a "handle attachment".

FIG. 1A is an external perspective view schematically showing an example of the handle attachment 1 according to the first embodiment of the present invention together with a part of the door 20. The circled portion of FIG. 1B is a perspective view of the lever handle 23 of FIG. 1A in a state where the handle attachment 1 is not attached.

The door 20 opens and closes by rotating around a rotation axis (not shown). A handle is attached at a position of about several cm from the door side surface 21 located on the opposite side of the rotation shaft toward the inside of the door 20. In this example, the handle is the lever handle 23. Further, a latch bolt 22 is provided on the door side surface 21 at the same height as the lever handle 23. The latch bolt 22 is elastically urged in a direction in which a substantially triangular prism portion at the tip always protrudes. The door frame (not shown) facing the door side surface 21 at the closed position of the door 20 is formed with a recess into which the protruding latch bolt 22 enters. In the closed position of the door 20, the latch bolt 22 enters the recess of the door frame to fix the door 20, and the door 20 cannot be opened by simply pushing and pulling. When the latch bolt 22 is retracted into the door by rotating the handle lever 23, the latch bolt 22 is released and the door 20 can be opened. The door 20 opens to the side of the flat surface 22a of the latch bolt 22. Therefore, in the example of FIG. 1, the door 20 is opened by pulling the door 20 toward the front with the latch bolt 22 released.

The handle attachment 1 according to the present invention is used by being attached to an existing handle lever 23. It should be noted that a gap is provided between the attached handle attachment 1 and the surface of the door 20 so as not to interfere with the operation of the attachment attachment 1. The handle attachment 1 has an operating portion 4 that can be immovably fixed to the handle lever 23. The illustrated operating portion 4 has a shape that partially covers the outer surface of the handle lever 23, but this is only a shape schematically shown. The specific shape of the operating portion 4 may be any shape as long as it can be fixedly fixed to the handle lever 23. Since the shape of the handle lever 23 itself is various, it is desirable that the operating portion 4 has a structure that can be fixed regardless of the shape of the handle lever 23. The operating portion 4 does not have to be an integral part, and may have a structure in which the handle lever 23 is sandwiched between a plurality of divided parts, for example. Although not shown, the structure may be fixed by using a fixture such as a bolt.

The handle attachment 1 further has an operating portion 2 arranged vertically above the operating portion 4 by a predetermined distance. The operation unit 2 includes a portion with which the elbow portion of the operator who intends to open the door engages. By separating the operating unit 2 vertically upward by a predetermined distance from the operating unit 4, the operator can operate the operating unit 2 using the elbow without bending down.

The handle attachment 1 further has a force transmitting unit 3 that connects the operating unit 4 and the operating unit 2. In the illustrated example, the force transmission unit 3 is composed of one long body, here a long plate member. The specific shape of the force transmitting unit 3 is not particularly limited. The base end of the force transmitting portion 3 is fixed to a part of the operating portion 4, and the tip is fixed to a part of the operating portion 2. The term "fixing" here includes both the case where the two parts are integrally molded and the case where the two members are connected by using a fastener or the like. The connection point of the force transmitting unit 3 to the operating unit 4 is preferably a position close to the lever tip of the handle lever 23. This is because when there is a wall or the like next to the door frame facing the door side surface 21, when the operation unit 2 is operated by the elbow portion, the distance is kept as much as possible so that the fingers do not hit the wall or the like.

2A is a perspective view of the handle attachment 1 shown in FIG. 1A, FIG. 2B is a side view, and FIG. 2C is a plan view schematically.

The operation unit 2 has a portion with which the elbow portion of the operator is engaged, and is configured in a shape in which the portion and the elbow portion are easily engaged. The shape of the operation unit 2 shown in the figure is an example. The "elbow" here may be not only the narrowly defined "elbow" but also the elbow and its surroundings, that is, the upper end region of the forearm or the lower end region of the upper arm, and a portion that is easy for each operator to use is used. Just do it. Since it is necessary to rotate the handle lever 23 in order to release the latch bolt 22, it is also necessary to rotate the operation unit 2. Therefore, the operating portion 2 has at least a portion with which the elbow portion engages when rotating it. The center of rotation of the operation unit 2 coincides with the center of rotation of the handle lever 23. Further, when opening the door, it is necessary to pull the door (push it from the opposite side of the door) while keeping the handle lever 23 in the rotated state (the state in which the latch bolt 22 is released). Therefore, the operation unit 2 includes at least a portion with which the elbow portion engages when the operation unit 2 is pulled (or pushed) in the horizontal direction in a direction away from the door 20 (in a direction closer to the door 20).

In the illustrated example, the operating unit 2 has a saddle-shaped portion connected to the upper end of the long plate member of the force transmitting unit 3. This saddle-shaped portion includes a ridge line 2a shown by a broken line, and the ridge line 2a draws a convex curve in a plane parallel to the plane of the door 20 in the mounted state. The convex curve forms a circumference in the illustrated example, but as another example, it may be an arc, an ellipse or an elliptical arc, or an arbitrary convex curve. The concave surface 2b is formed by having a concave contour line having the ridge line 2a as a valley in the plane orthogonal to the ridge line 2a. The concave surface 2b is formed by gradually increasing in diameter from the ridge line 2a in both directions perpendicular to the door 20, and the peripheral edges on both sides of the concave surface 2b form wall portions 2d, respectively. Therefore, the operation unit 2 has a shape in which two trumpet outlets are back-to-back.

In the illustrated example, the operating unit 2 has a symmetrical shape with respect to the surface including the ridge line 2a. As another example, the operation unit 2 may have an asymmetrical shape by making the diameter of the wall portion 2d closer to the door 20 smaller than the diameter of the wall portion 2d on the side far from the door 20.

The distance L between the pair of wall portions 2d, which is schematically shown in FIG. 2B, is set to such a length that the elbow portion of the assumed average operator can be inserted with a margin. For example, it is about 10 cm. Similarly, the depth of the saddle-shaped portion shall be such that the elbow portion engages appropriately. For example, it is about 4 to 5 cm. However, the length is not limited to these. The recess of the operating portion 2 formed in this way has a shape in which the elbow portion of the operator can easily enter, preferably at least a shape in which the elbow head can easily hit, and a shape in which the elbow portion can be easily separated. The ridge line 2a and the concave surface 2b do not have to exist over the entire circumference of the axis in the direction perpendicular to the surface of the door 20, and the angle range in which the elbow portion may hit when the operation portion 2 is rotated. It suffices to form at (see the angle β in FIG. 2A).

The vertical distance H between the operating unit 4 and the operating unit 2 schematically shown in FIG. 2B is preferably 20 to 40 cm (the same applies to the following embodiments). The distance H here is the length from the height position of the handle to the midpoint position of the vertical length of the operation unit 2 (the same applies to the following embodiments). Since the height position of the normal handle is about 85 to 100 cm from the floor surface, the operation position is raised by the distance H. As a result, the operator can operate the operation unit 2 while standing upright. However, since the height of the operator varies, the setting of the distance H does not have to be strict.

In the illustrated example, the force transmission unit 3 is connected to a position closer to the door 20 at the bottom of the operation unit 2. However, the shape of the force transmitting portion 3 and the connecting position thereof can be appropriately designed according to the shape of the handle lever and the structure of the fixing portion 4.

FIG. 3 shows an example of the state of the handle attachment 1 shown in FIGS. 1 and 2 when the handle attachment 1 is operated. Preferably, the operator's elbow portion 30 is placed in the recess of the operation portion 2 and rotated as shown by arrow I. Alternatively, the operator's elbow portion 30 (particularly the elbow head) comes into contact with any part of the operation portion 2 (for example, the outer peripheral edge of the wall portion 2d in FIG. 2) without inserting the elbow portion 30 of the operator 30 into the recess. If so, the rotation operation is possible by friction (the same applies to other embodiments). When the elbow portion 30 is inserted into the recess, the elbow portion 30 engages with the concave surface 2b of the operation portion 2 shown in FIG.

The force applied by the operator is transmitted to the handle lever 23 via the force transmission unit 3 and the actuating unit 4, and the handle lever 23 rotates as shown by arrow II. As a result, the latch bolt 22 retracts and is released. At that point, the door 20 is still closed. After that, when the operation unit 2 is pulled in the horizontal direction away from the door 20 as shown by the arrow III while maintaining the handle lever 23 in the rotated state, the door 20 opens as shown by the arrow IV. At this time, the elbow portion engages with the wall portion 2d on the front side of the operation portion 2. Even if the elbow portion 30 is not in the recess, the operation portion 2 can be pulled horizontally by friction (the same applies to other embodiments).

After the door 20 is sufficiently opened, the operator separates the elbow portion 30 from the operation portion 2 and passes through the other side of the door 20. The concave surface 2b of the operation portion 2 has a shape in which the elbow portion 30 can be easily separated naturally. Therefore, contact, operation, and detachment to the operation unit 2 can be performed as a series of flows.

After that, if the door 20 closes automatically, the operator does not need to do anything. If the door 20 does not close automatically, the handle attachment 1 similarly attached to the other handle lever on the back side of the door 20 may be operated by the elbow. For example, after passing through the door 20, the elbow portion 30 may be engaged with the operation portion 2 of the handle attachment 1 on the back side by looking back, and the door 20 may be pulled in the closing direction. When the door 20 closes, the latch bolt 22 automatically retracts, so there is no need to rotate the handle lever 23.

When opening the door 20 from the back side of the illustrated surface, the door 20 is pushed to open the door 20. In that case, the other handle attachment 1 attached to the back side of the door 20 is similarly rotated using the elbow portion to retract the latch bolt 22 to release it, and then the operation portion 2 is pushed horizontally as it is. This allows the door 20 to be opened.

FIG. 4 is an external perspective view schematically showing an example of the handle attachment 1A according to the second embodiment of the present invention together with a part of the door 20.

The handle attachment 1A is attached to the handle lever 23 as in the first embodiment, and has an operating portion 2, a force transmitting portion 3, and an operating portion 4 having the same shape. The difference from the first embodiment is that the operating unit 2 is not located vertically above the operating unit 4. In the second embodiment, the operating unit 2 is separated from the operating unit 4 vertically upward by a predetermined distance in a direction forming a predetermined angle α inward of the door 20 in a plane parallel to the surface of the door 20. And are arranged. Therefore, in this case, the force transmission unit 3 is provided so as to be inclined with respect to the vertical direction. The angle α is preferably 45 ° or less. This embodiment is effective when there is a wall or the like next to the door frame facing the door side surface 21. This is because the distance from such a wall or the like to the operation unit 2 becomes longer, so that it becomes difficult for the fingers or the like to hit the wall or the like when operating the operation unit 2 with the elbow portion. The features of this second embodiment are also applicable to the following other embodiments.

Also in the second embodiment, the distance H in the vertical direction between the operating unit 4 and the operating unit 2 is preferably 20 to 40 cm.

5 (a) is a schematic partial perspective view of an example of the handle attachment 1B according to the third embodiment of the present invention, and (b) and (c) are schematic partial perspective views of the modified form of (a). Is.

The operating portion (not shown) has an appropriate shape that can be fixed to the handle. The force transmission unit 3 is one long plate member in this example. The operation unit 2 is connected to the upper end of the force transmission unit 3.

In this example, the portion of the operating portion 2 with which the elbow portion of the operator engages has a convex surface 2c having a substantially cylindrical surface and wall portions 2d rising from both ends thereof, and a recess is formed by these. This embodiment has a relatively simple shape. The convex surface 2c of the substantially cylindrical surface does not have to exist over the entire circumference of the operation unit 2, and it is sufficient if the convex surface 2c is formed in an angle range in which the elbow portion may hit when the operation unit 2 is rotated. In the illustrated example, the convex surface 2c has only the upper half of the cylinder. When the operation unit 2 is pulled horizontally away from the door 20, the elbow portion of the operator engages with the wall portion 2d on the front side of the operation unit 2. It suffices if the wall portion 2d is also provided in a range where the elbow portion engages.

In the attachment attachments 1Ba and 1Bb of the modified forms shown in FIGS. 5B and 5B, a substantially cylindrical convex surface 2c of the operation portion 2 is formed in a range of about 90 °, and the wall portions 2d on both sides thereof are upward. It slopes outward so that it becomes wider toward it. Further, a return portion 2d1 having a rounded shape and projecting outward is provided on the outer peripheral edge of the wall portion 2d. The presence of the return portion 2d1 facilitates engagement of the operator's elbow portion. The width of the force transmission unit 3 is different between FIGS. 5 (b) and 5 (c).

FIG. 6A is an external perspective view schematically showing an example of the handle attachment 1C according to the fourth embodiment of the present invention together with a part of the door 20. (B) is a perspective view of the push-pull handle of (a) in a state where the handle attachment is not attached. (C) shows another handle attachment 1C attached to the back side of the door 20.

In the fourth embodiment, the handle attachment 1C is attached to the push-pull handle 24. In FIG. 6B, the push-pull handle 24 has a square plate shape as an example, but there are various other forms such as a vertically long rod shape. When the push-pull handle is pushed or pulled, the latch bolt 22 is retracted and released, and when the push handle is pushed or pulled further, the door 20 can be opened.

In the handle attachment 1C, the operation unit 2 and the force transmission unit 3 have the same shape as that of the first embodiment, but the operating unit 4 is configured to fit the shape of the push-pull handle 24. The specific configuration of the operating unit 4 can be implemented in various ways.

As shown in FIG. 6A, when the elbow portion (not shown) is engaged with the wall portion 2d in front of the operation portion 2 and pulled as shown by the arrow I, the force transmission portion 3 and the operating portion 4 are used. The force is transmitted and the push-pull handle 24 is also pulled as shown by arrow II. As a result, the latch bolt 22 retracts, and the door 20 can be opened by pulling the wall portion 2d of the operation portion 2 in the horizontal direction as it is.

As shown in FIG. 6 (c), on the back side of the door 20, when the elbow portion (not shown) is engaged with the operation portion 2 and pushed as shown by the arrow III, the force transmission portion 3 and the operating portion 4 are pressed. The force is transmitted through the push-pull handle 24, which is also pushed as shown by the arrow IV. At this time, the elbow portion may be inserted into the operation portion 2 and the wall portion 2d on the side close to the door 20 may be pushed, but instead, the outer surface of the wall portion 2d on the front side may be pushed. As a result, the latch bolt 22 is retracted and released, and the door 20 can be opened by pushing the operation unit 2 toward the door 20 in the horizontal direction as it is.

FIG. 7A is an external perspective view schematically showing an example of the handle attachment 1D according to the fifth embodiment of the present invention together with a part of the door 20. (B) is a perspective view of the knob of (a) in a state where the handle attachment is not attached.

In a fifth embodiment, the handle attachment 1D is attached to the knob 25. The knob 25 is a general-purpose handle that has been used for a long time. The handle attachment 1D is configured such that the operating portion 4 conforms to the shape of the knob 25. The specific configuration of the operating unit 4 can be implemented in various ways. The operating unit 2 is located in a direction forming a predetermined angle with respect to the vertically upper side of the operating unit 4. The long body forming the force transmitting portion 3 is composed of one long rod-shaped body connecting the operating portion 4 and the operating portion 2. The operation unit 2 has a sphere here. As another example, the sphere may be a hemisphere. With such a shape of the operating portion 2, the elbow portion can be engaged and the rotation operation can be performed by friction. Further, when the operating portion 2 is pulled toward the front, the recess 2e formed in the connecting portion with the force transmitting portion 3 can be used.

FIG. 8 is an external perspective view schematically showing an example of the handle attachment 1E according to the sixth embodiment of the present invention together with a part of the door 20.

In the sixth embodiment, the handle attachment 1E is attached to the handle lever 23. The actuating portion 4 is configured to fit the shape of the handle lever 23. The operation unit 2 is the same as that of the first embodiment here. The operating unit 2 is located substantially vertically above the operating unit 4. In the sixth embodiment, the force transmission unit 3 is formed in a truss shape. That is, the operating portion 4 and the operating portion 2 are connected by a pair of elongated bodies which are plate members here, and these elongated bodies are arranged so as to form two sides of a triangle having the operating portion 4 as the base. ing. With such a truss-like structure, the structural strength is improved and the force can be reliably transmitted.

9 (a) is a partial perspective view schematically showing an example of the handle attachment 1F according to the seventh embodiment of the present invention, and FIG. 9 (b) is a sectional view taken along line xx of (a). (C) is a modified form. The moving part is not shown. The force transmission unit 3 is formed of one plate member as an example, but can be configured in various ways.

In each of the above-described embodiments (excluding the fifth embodiment), the operating portion 2 has a concave surface 2b or a convex surface 2c into which the elbow portion is inserted, and a pair of wall portions 2d on both sides thereof. As described in each embodiment, when the operation portion 2 is pulled toward the front, the elbow portion can be engaged with the wall portion 2d on the front side and pulled. Further, when pushing the operation portion 2 to the other side, the elbow portion can be engaged with the wall portion 2d on either the side near the door or the front side and pushed.

From this, in order to pull or push the operation unit 2, it is sufficient to have at least the wall portion 2d on the front side (the side far from the door). In the seventh embodiment, the operation unit 2 has only the wall portion 2d on the front side. That is, it can be said that the operation unit 2 shown in FIG. 9A is a shape obtained by vertically dividing the shape of two trumpet outlets 2 shown in FIG. 2 back to back. A concave surface 2b formed by gradually increasing in diameter from the peripheral edge of a circular end surface located in a plane parallel to the surface of the door 20 toward the direction perpendicular to the door 20, and a wall portion formed by the peripheral edge portion of the concave surface 2b. Has 2d and.

Preferably, a return portion 2d1 having a rounded shape and projecting inward is provided on the outer peripheral edge of the wall portion 2d. The presence of the return portion 2d1 facilitates engagement of the operator's elbow portion.

As shown in the mounting attachment 1F in the modified form of FIG. 9C, a substantially cylindrical convex surface 2c can be used instead of the concave surface 2b. In that case, it has a substantially cylindrical convex surface 2c having an axis in the direction perpendicular to the door 20 and a wall portion 2d rising from an end portion of the convex surface 2c opposite to the door 20. In the illustrated example, the substantially cylindrical convex surface 2c is provided over the entire circumference around the axis, but may be provided in a predetermined angle range instead.

The handle attachments of the respective embodiments described with reference to FIGS. 1 to 9 above can be attached to various existing door handles. Further, a form in which the characteristic configurations of the respective embodiments are combined with each other is also included in the scope of the present invention.

Although not shown, other door handles have a latch bolt release button, and the latch bolt can be released by pushing the button in the vertical direction. A handle attachment attached to such a vertical push handle has an operating portion that can be pushed vertically using the elbow.

10 and 11 show another aspect of the invention. FIG. 10A is a perspective view schematically showing an embodiment in which a new handle is attached to the door 20, and FIG. 10B is a side view.

The newly installed handle shown in FIG. 10 is a handle lever 23A, which has a shape in which an operation unit 2 is additionally connected to a basic handle lever. The shape of the operation unit 2 is substantially the same as the upper half of the operation unit 2 of the first embodiment described above, and has a shape suitable for engaging the elbow portion of the operator. The important point is the height position of the handle lever 23A. The handle lever 23A is attached to the door 20 at a height of 120 to 140 cm from the floor. An example of the height position (85 to 100 cm) of a general handle lever 23 is shown by a dotted line. The distance H between the height position of the handle lever 23A in the vertical direction and the height position of the general handle corresponds to the distance in the vertical direction between the operating portion and the operating portion of the above-mentioned handle attachment, and is 20 to 40 cm. Is preferable.

FIG. 11A is a perspective view schematically showing another embodiment in which a new handle is attached to the door 20, and FIG. 11B is a side view. The newly installed handle shown in FIG. 11 is a push-pull lever 24A, which has a shape in which the operation unit 2 is additionally coupled to the basic push-pull lever. As an example, the shape of the operation unit 2 has a concave surface corresponding to a part of an inner surface of a cylinder and wall portions on both sides thereof. The height position of the push-pull lever 24A is the same as that of the embodiment of FIG.

In the case of a new handle, it is important that the height position of the handle is set so that the operator can operate it with the elbow while standing straight. The shape of the operation unit 2 can be various shapes other than the shapes shown in FIGS. 10 and 11. The shape of the operation unit 2 shown in FIGS. 10 and 11 can also be applied to the operation unit 2 of each of the embodiments shown in FIGS. 1 to 9 described above.

Although the present invention has been described above with reference to the drawings showing some embodiments of the present invention, the present invention also includes embodiments in which the characteristic configurations of the respective embodiments are combined. Further, as long as the gist of the present invention is met, a wider variety of modified forms are possible.

1, 1A, 1B, 1C, 1D, 1E, 1F Handle attachment 2 Operation part 3 Force transmission part 4 Acting part 20 Door 21 Door side 22 Latch bolt 23 Lever handle 24 Push-pull handle 25 Knob 30 Elbow

Claims (8)

A handle attachment (1,1A, 1B) that can be attached to the door (20) handle (23,24,25) used to at least open the door (20) secured in the closed position by the latch bolt (22). , 1C, 1D, 1E)
An actuating part (4) that can be immovably fixed to the handle (23,24,25),
Arranged vertically above the operating portion (4) or inward of the door (20) with respect to the vertically upward direction at an angle (α) of 45 ° or less by a predetermined distance, the operator An operation unit (2) having a portion where the elbow is engaged,
It has a force transmitting unit (3) that connects the operating unit (4) and the operating unit (2).
When the operation unit (2) is operated by the elbow of the operator, the handle (23,24,25) is operated via the force transmission unit (3) and the operation unit (4) to operate the latch bolt. A handle attachment characterized in that (22) is released. The portion of the operating portion (2) with which the operator's elbow engages is the portion with which the elbow engages when the operating portion (2) is pulled horizontally away from the door (20) (2d, The handle attachment according to claim 1, wherein 2e) is provided at least. The portion of the operating portion (2) with which the operator's elbow is engaged shall at least include a portion (2b, 2c, 2d) with which the elbow is engaged when the operating portion (2) is rotated. The handle attachment according to claim 1 or 2. The portion of the operation portion (2) where the operator's elbow is engaged has a saddle-shaped portion, and the saddle-shaped portion is a ridge line that draws a convex curve in a plane parallel to the surface of the door (20). 2a), a concave surface (2b) formed by gradually increasing in diameter in both directions perpendicular to the door (20) from the ridge line (2a), and peripheral edges on both sides of the concave surface (2b), respectively. The handle attachment according to claim 2 or 3, wherein the handle attachment is provided with a wall portion (2d). The portion of the operating portion (2) with which the operator's elbow engages is perpendicular to the door (20) from the peripheral edge of the circular end face and the circular end face located in a plane parallel to the surface of the door (20). 2. or 3 according to claim 2, wherein the concave surface (2b) formed by gradually expanding the diameter in the direction and the wall portion (2d) formed by the peripheral edge portion of the concave surface (2b) are provided. Handle attachment described in. The portion of the operating portion (2) with which the operator's elbow engages is a substantially cylindrical convex surface (2c) having an axis in the direction perpendicular to the door (20) and the door (20) on the convex surface (2c). The handle attachment according to claim 2 or 3, further comprising a wall portion (2d) rising from an end opposite to the side. The handle (23,24,25) is a lever handle, a push-pull handle, a vertical push handle, or a knob, and the operating portion (4) is configured to fit the shape of the handle (23,24,25). The handle attachment according to any one of claims 1 to 6, wherein the handle attachment is made. The handle attachment according to any one of claims 1 to 7, wherein the distance between the operating portion (4) and the operating portion (2) in the vertical direction is 20 to 40 cm.

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