JP2017093807A - Fixing member of side member for bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing member of a side member for bed capable of fixing a leg part to an attachment hole with a constant fixing force.SOLUTION: An upper part 61 of a first leg part 6 is supported on a side fence frame, a lever 65 for rotating the first leg part 6 is connected to an intermediate part 62 thereof, and a lower part 63 is inserted into one of attachment holes provided in a bed frame. An upper part of a second leg part 7 is fixed to the side fence frame, and a body part 71 is inserted into the other of the attachment holes. The lower part 63 is eccentric with respect to the upper part 61 and the intermediate part 62, and the interval between the lower part 63 and the body part 71 varies due to the rotation of the leg part 6. A step 69 having a smaller diameter than that of the lower part 63 is formed in the upper part of the eccentric lower part 63, and a step 72 having a smaller diameter than the body part 71 is formed in the upper part of the body part 71. Thus, in a fixed state of a side fence 1, an upper end shoulder part of the lower part 63 and an upper end shoulder part of the body part 71 are always in contact with inner surfaces of the attachment holes and receive a reaction force therefrom.SELECTED DRAWING: Figure 3

Description

  The present invention provides a bed side member such as a bed side rail in a pair of cylindrical mounting holes provided in the bed side portion in order to detachably install the bed side member on the bed side portion. For the bed to fix the leg bar in the mounting hole by friction between the outer surface of the leg bar and the inner surface of the mounting hole by inserting the leg bar and adjusting the distance between the pair of leg bars The present invention relates to a fixing member for a side member. The bed side member has a variety of types that can be attached to the bedside, such as a side support for spreading the bottom of the bed in the bed width direction, in addition to a bed side fence that prevents a person lying on the bed from falling off the bed. A side member for the bed is included.

  On the side of the bed, a side fence is installed to prevent the bed user from falling from the bed. Further, the side fence can be removed when necessary so as not to disturb the medical treatment of the doctor and the nursing / caregiving of the nurse or caregiver. Thus, in order to attach the side fence to the bed side, a pair of cylindrical mounting holes are installed at the side fence attachment position of the bed side, and a pair of cylindrical mounting holes are installed at the lower edge of the bed side fence. The leg bars are provided substantially in parallel, and each leg bar is inserted into the mounting hole, and the leg bars are pressed against the inner surface of the mounting hole by widening the space between the leg bars to remove the leg bar by friction. Secure to the wearing hole. Moreover, in order to remove a side fence from a bed side part, the press to the attachment hole of a leg stick | rod can be cancelled | released (patent document 1).

  In the prior art described in Patent Document 1, a fixing mechanism configured to rotate an eccentric leg portion and fix it to a bed is disclosed. In order to hold the operation handle in a fixed state, a holding device is provided between the operation handle and the fixed fence portion when the fixing mechanism is locked. The holding device is provided with a holding groove for holding the operation handle on the operation handle side of the holding device, and is elastically deformed so that the holding device swings up and down as the operation handle rotates. An attachment piece is provided.

JP2012-70767

  However, in the prior art described in Patent Document 1, the distance between the eccentric leg lower part and the other leg part is changed, the leg lower part is pressed against the mounting hole, and the frictional force is used. The leg and the attachment hole are fixed, but the pressing force to the attachment hole is likely to fluctuate, and as a result, the frictional force fluctuates, and the fixing force for fixing the leg to the attachment hole is small. There is a problem that it fluctuates.

  In the prior art described in Patent Document 1, the eccentric lower part of the leg is rotated by the operation handle, and the lower part of the leg and the attachment hole are fixed and released. In the fixed state, the operation handle is simply fitted into the recess and held in that position, and therefore, there is a problem that the operation handle is easily detached from the recess when an external force is applied. If the operation handle is carelessly removed from the predetermined holding position, the operation handle may rotate to the frame side of the bed, and the bed frame or the side fence may be damaged.

  This invention is made | formed in view of this problem, Comprising: It aims at providing the fixing member of the side member for beds which can fix a leg part to a mounting hole with fixed fixing force. Another object of the present invention is to hold the lever for tightening the eccentric leg portion in the mounting hole in a fixed state in which the eccentric leg portion is fixed to the mounting hole, and securely hold it in place. It is another object of the present invention to provide a bed side member fixing member that can prevent the lever from rotating.

The present invention provides a bed side member fixing member for fixing a bed side member to the bed frame using an attachment member provided with a pair of attachment holes provided in the bed frame.
A pair of legs supported by the bed side member, at least one of which is rotatable about its axis of rotation;
A lever for rotating at least one of the rotatable legs;
The leg portion rotated by the lever is eccentric with respect to the portion that is inserted into the mounting hole so as to be rotatably supported by the bed side member,
The bed side member fixing member is characterized in that a step having a smaller diameter or a recessed portion is provided at an upper portion of the eccentric portion than at a lower portion of the eccentric portion.

The fixing member of the bed side member according to the present invention is:
In the fixing member of the bed side member for fixing the bed side member to the bed frame, using an attachment member provided with a pair of cylindrical mounting holes provided in the bed frame,
A cylindrical support member provided on the side member with the axial direction perpendicular thereto;
The rod-shaped upper part is inserted into the support member and is supported rotatably about the axis of the support member, and the rod-shaped lower part is eccentric with respect to the axis with respect to the upper part. A first leg that is provided and inserted into the other of the attachment holes;
A rod-shaped second leg portion that is arranged with the axial direction perpendicular to the side member and is inserted into one of the attachment holes;
A lever connected to the upper part of the first leg by a connecting part, and for turning the first leg;
Have
The lower part of the first leg is provided with a step whose side surface or peripheral surface is recessed from the connecting part over a predetermined axial length.
By rotating the lever, the distance between the eccentric lower portion of the first leg and the second leg changes, and the pressing force against the attachment hole changes, whereby the first A fixed state or a non-fixed state between the lower portion of the leg portion and the second leg portion and the attachment hole is selected.

In this case, in the above invention,
The support member is
A cylindrical body,
A locking portion formed at the lower end of the main body portion, with a part of the ring missing,
Have
The first leg portion has a protruding convex portion provided on a side surface of the upper portion,
A cylindrical stopper is fitted on the first leg,
The stopper is
A first protrusion formed on the inner surface so as to protrude inward;
A second protrusion formed so as to protrude downward from the lower end thereof;
Have
The stopper is externally fitted to the locking portion, and the first protrusion rotates with respect to the main body portion of the support member so that the missing portion of the locking portion can move.
When the first leg is rotated via the lever, the convex portion is rotated accordingly, and the stopper is rotated by contacting the second protrusion of the stopper,
The first protrusion may be in contact with either one of the locking end portions of the locking portion of the support member so that the rotation range of the lever is restricted.

In this case,
The bed side member has a frame cover that covers the side member frame;
The first leg has a lever cover that covers the lever;
A protrusion provided on one of the frame cover and the lever cover when the lever is in a non-fixed state between the lower portion of the first leg and the second leg and the mounting hole. And the recess provided on the other side can be engaged so that the lever is temporarily held at the non-fixed position.

Furthermore, in the above invention,
A stopper provided on the first leg,
A lever cover that covers the lever and is movable in the one direction with respect to the lever;
Have
The stopper is
A first locking portion formed of a concave portion or a convex portion formed in the lever cover;
A second locking portion that is provided on the side member at a position facing the first locking portion in the fixed state and includes a convex portion or a concave portion that can be fitted to the first locking portion;
An elastic member for biasing the lever cover in a direction toward the upper half of the first leg in the one direction;
Have
In the fixed state, the lever cover is configured to be applied with an urging force in a direction in which the fitting state between the first locking portion and the second locking portion is maintained by the elastic member. Can do.

  According to the present invention, since the lower half portion and the upper half portion of the first leg portion are eccentric, the lower half portion of the first leg portion is rotated by the rotation of the upper half portion of the first leg portion. The distance between the portion and the second leg varies, and the pressing force between the lower half of the first leg and the second leg and the mounting hole changes, and the pressing force changes. The first leg and the second leg can be fixed to the attachment hole in a state where the pressure is high, and the first leg and the second leg can be fixed in a state where the pressing force is small. It can be extracted from the attachment hole. In this case, the eccentric lower part of the first leg portion is a step in which the side surface or the peripheral surface is recessed over a predetermined length from the connecting portion. For this reason, when the first and second leg portions are inserted into the attachment holes and the bed side member is attached to the attachment member, the connecting portion of the lever contacts and is supported by the attachment member. The step portion does not contact the mounting hole, the lower portion below the step contacts the mounting hole, and the lower portion of the boundary with the step, that is, the lower shoulder portion is the mounting hole. It touches the inner surface of and presses it. Also, when a cover that covers the attachment member is provided, the stepped portion does not contact the cover hole, and the lower portion below the step contacts the mounting hole. Therefore, the lower shoulder portion below the step of the first leg always contacts the inner surface of the mounting hole, and always presses the mounting hole with a constant stress. For this reason, the bed side member is always fixed to the attachment member with a fixed fixing force.

  According to the invention of claim 2 of the present application, the stopper rotates and the first projection comes into contact with the locking end of the locking portion, thereby restricting the rotation range of the lever. Therefore, even if a load is applied to the lever inadvertently, the lever does not rotate toward the bed frame, and the bed frame or the side member is prevented from being damaged by the lever.

  Further, in the invention according to claim 4 of the present application, in the fixed state, the lever cover gives an urging force in a direction in which the fitting state between the first locking portion and the second locking portion is maintained by the elastic member. Therefore, even if a load is applied to the lever inadvertently, the lever does not rotate toward the bed frame, and the lever prevents the bed frame or the side member from being damaged.

It is a general view which shows the side member (side fence) for beds to which the fixing member of embodiment of this invention was attached. It is a front view which shows a fixing member. Similarly, it is a general view showing the bed side fence to which the fixing member of the present embodiment is attached. Similarly, it is a front view showing a fixing member. It is a front view which shows a fixing member. It is a front view which shows the connection part of the leg part of a bed side fence, and a lever. It is a perspective view which shows the support part which supports the leg part in a bed side fence. It is a perspective view which shows a leg part. It is a perspective view which shows a stopper. It is a figure which shows the assembly state of the fixing member of this embodiment. It is a bottom view showing the structure of the stopper 9. It is a perspective view which shows the relationship between the stopper 9 and the leg intermediate part 62. FIG. FIG. 6 is a perspective view showing a recess 83 of the cover 8. 4 is a perspective view showing a protrusion 41 of a cover 4. FIG. FIG. 6 is a perspective view showing an engagement state between a protrusion 41 and a recess 83. It is a front view which shows the whole other embodiment of this invention. Similarly, it is a figure which shows the structure of the stopper of other embodiment. Similarly, it is a front view which shows the mechanism of the stopper of other embodiment. It is a side view which shows an attachment member and a cover. It is front sectional drawing which shows the state which inserted the 1st and 2nd leg part in the mounting hole. It is a schematic diagram which shows the operation principle of the comparative example of this invention. It is a schematic diagram which shows the principle of operation of the Example of this invention. It is a schematic diagram which shows other embodiment of this invention. It is a schematic diagram which shows the usage condition of embodiment of this invention.

  Hereinafter, an embodiment in which the present invention is applied to a bed side fence will be specifically described with reference to the accompanying drawings. FIG. 1 is an overall view showing a bed side fence 1 in a fixed state to which a fixing member 10 of the present embodiment is attached, FIGS. 2 and 5 are front views showing the fixing member, and FIG. FIG. 4 (a) is an enlarged view showing the vicinity of the first leg portion 6 and FIG. 4 (b) is the second view thereof. It is an enlarged view which shows the vicinity of the leg part 7. 6 is a front view showing a connecting portion between the leg of the bed side fence and the lever, FIG. 7 is a perspective view showing a support portion for supporting the leg portion in the bed side fence, and FIG. 8 is a perspective view showing the leg portion. FIG. 9 is a perspective view showing the stopper. 19 is a cross-sectional view (lateral cross-sectional view) of the long-side frame 110 of the bed in the bed width direction, and FIG. 20B is a cross-sectional view of the long-side frame 110 of the bed in the bed longitudinal direction. A pair of leg mounting holes 113 are fixed to the long side frame 110 of the bed so as to be separated from each other in the longitudinal direction. The attachment hole 113 has a cylindrical shape and is arranged with its axial direction vertical. As shown in FIGS. 1 and 3, the bed-side fence 1 has its rod-shaped legs 6 and 7 in a pair of mounting holes 113 fixed to the long-side frame 110 of the rectangular frame of the bed. By being inserted, it is erected on the side of the bed. The leg portions 6 and 7 have a circular rod shape, and the attachment hole has a cylindrical shape and has an inner diameter large enough to allow the leg portions 6 and 7 to be loosely fitted. The leg 6 is rotatably connected to the lower edge of the side fence 1, the leg 7 is fixed to the lower edge of the side fence 1, and the legs 6, 7 are vertically parallel to each other. Looking down. As shown in FIG. 10, the bed frame 110 on the long side of the bed has a U-shaped cross section, and a cylindrical mounting hole 113 is fixed so as to span the upper and lower walls. The cover 111 may be attached to the frame 110 in consideration of the design when using the bed. The cover 111 also has a U-shaped cross section and is fitted into the frame 110 from the side. Further, as shown in FIG. 20A, a guide hole 112 for inserting and guiding the leg portions 6 and 7 is fixed to the lower surface of the upper wall of the cover 111.

  The frame 2 of the side fence 1 is supported by legs 6 and 7 and is erected on the side of the bed, and the other frame 3 of the side fence 1 is mutually connected to the frame 2 by a pivot shaft 11 arranged vertically. It is connected to the pivotable. Then, when the frame 3 and the frame 2 are arranged on the same plane, the patient on the bed is protected from falling in a vast area at the long side edge of the bed, and the frame 3 is protected from the frame 2. When the patient is pivoted to fold, the patient can move onto the bed or get out of the bed.

  The frame 2 and the frame 3 are covered with covers 4 and 5, respectively. These covers 4 and 5 are assembled by connecting the half-plate-shaped parts with the frames 2 and 3 being sandwiched therebetween.

  The leg portion 7 is fixed to the lower edge portion of the frame 2. On the other hand, the leg portion 6 is rotatably connected to the lower edge portion of the frame 2. That is, as shown in FIG. 7, the lower edge portion of the frame 2 has a vertical cylindrical connecting portion 2c disposed between a horizontal rectangular tube-shaped member 2a and a horizontal cylindrical member 2b. The connecting portion 2 c is composed of a cylindrical main body portion 21 and a locking portion 22 having a smaller diameter than the main body portion 21 at the lower end portion of the main body portion 21. The locking portion 22 is formed in a part of the main body portion 21 in the circumferential direction, and both end portions thereof are locking end portions 23 (23a, 23b). The locking portion 22 is missing between the locking end portions 23a and 23b on the member 2a side. As shown in FIG. 10, the missing part of the locking part 22 is located on the square tubular member 2a side, and the locking end part 23a, the locking end part 23b, and the axial center (main body of the locking part 22). The angle formed by the line connecting the axis 21 of the portion 21 and the axis of the rectangular tubular member 2a is, for example, 60 ° and less than 90 °. When this angle is 60 °, the locking portion 22 is formed at the 2/3 circumferential portion of the main body portion 21.

  As shown in FIG. 8, the leg portion 6 has a cylindrical bar shape, and an upper portion 61 and a lower portion 63 are integrally formed with an intermediate portion 62 provided therebetween. As shown in FIG. 10, the upper portion 61 has a diameter that matches the inner diameter of the locking portion 22 of the member 2 c, is inserted into the locking portion 22, and rotates coaxially with the locking portion 22. . Further, a groove 61a extending in the circumferential direction is formed on the upper edge of the upper portion 61. As shown in FIG. 2, the groove 61a protrudes upward from the upper end of the member 2c, and the groove 61a is interposed therebetween. Thus, the leg portion 6 is supported so as not to fall from the member 2c. The intermediate part 62 of the leg part 6 has a slightly larger diameter than the upper part 61, and a lever 65 is fixed from the side part of the intermediate part 62 so as to extend perpendicularly to the intermediate part 62 and thus horizontally. The distal end portion 67 of the lever 65 is formed to be slightly bent upward. The lever 65 and the tip portion 67 are covered with the cover 8 together with the intermediate portion 62. The cover 8 has a portion in the vicinity of the tip 67 rising upward, and is a gripping portion 81 having a hole 82 in this portion. Since the cover 8 is provided with a lever 65 and a tip portion 67 orthogonal to the lever 65, rigidity in the vertical plane is ensured. A protrusion-type stopper 64 is formed on the upper side of the intermediate portion 62 and above the lever 65.

  The lower part 63 of the leg part 6 has a cylindrical bar shape like the upper part 61, but its axis is offset from the axis of the upper part 61. That is, the lower part 63 is eccentric with respect to the upper part 61. For this reason, when the leg part 6 rotates around the upper part 61 inserted into the member 2 c of the frame 2, the axis of the lower part 63 revolves around the axis of the upper part 61. The lower part 63 is inserted into a mounting hole fixed to the bed frame. For this reason, when the leg part 6 rotates, the lower part 63 is eccentric with respect to the center of rotation of the upper part 61, and therefore approaches the inner surface of the attachment hole or is spaced apart. And after the lower part 63 approaches and contacts the inner surface of a mounting hole, the lower part 63 will press the inner surface of a mounting hole.

  As shown in FIG. 2, the lever 65 is fixed to the intermediate portion 62, and the lever 65 is covered with the cover 8. As shown in FIG. 4A, the intermediate portion 62 and the intermediate portion 62 are covered. The connecting portion between 62 and the lever 65 is covered with a connecting portion cover 85. And although the lower part 63 of the 1st leg part 6 is extended below from the hole provided in the connection part cover 85, an axial diameter becomes small over a predetermined length from the upper end of the lower part 63 to an axial direction. The peripheral surface is recessed from the entire lower portion 63 to form a step 69. Further, as shown in FIG. 4B, the second leg portion 7 is also provided on the fixing portion cover 86 because the fixing portion of the second leg portion 7 with respect to the frame 2 is covered with the fixing portion cover 86. It extends downward from the hole. The upper portion of the second leg portion 7 has a smaller diameter than the main body portion 71 of the second leg portion 7 over a portion having a predetermined length in the axial direction, and the peripheral surface of the small diameter portion is recessed. A step 72 is formed.

  The stopper 9 has a cylindrical shape, and the main body portion 91 has an inner diameter that matches the outer diameter of the locking portion 22. The main body portion 91 is externally fitted to the locking portion 22, and the main body portion 91 is the locking portion. It is possible to rotate around the center of 22. That is, the inner surface 91a of the main body 91 of the stopper 9 slides in contact with the outer surface of the locking portion 22, but a protrusion 92 protruding inward is formed on a part of the inner surface 91a in the circumferential direction. In addition, at the lower end edge of the main body 91, a part in the thickness direction including the outer surface 91b in a part in the circumferential direction protrudes downward to form a protrusion 93.

  Next, a method of assembling the member 2c, the leg 6 and the stopper 9 configured as described above will be described with reference to FIGS. 2 to 6, 11, and 12. FIG. First, the stopper 9 is externally fitted to the locking portion 22 below the member 2c of the frame 2. At this time, the inner surface 91a of the stopper 9 overlaps the outer surface of the locking portion 22 of the member 2c. Then, the protrusion 92 of the stopper 9 is located at the missing portion of the locking portion 22, and the stopper 92 is fitted to the locking portion 22, and the protrusion 92 has a locking end portion 23 a and a locking end portion 23 b. The protrusion 92 can move between the locking end portion 23a and the locking end portion 23b until it abuts against the locking end portion 23a. Further, the upper portion 61 of the leg portion 6 is inserted into the member 2c. At this time, the peripheral surface of the upper portion 61 of the leg portion 6 contacts the inner surface of the locking portion 22, and when the leg portion 6 rotates, the peripheral surface of the upper portion 61 slides on the inner surface of the locking portion 22. . Further, the protruding stopper 64 of the intermediate portion 62 is in a position aligned with the outer surface protrusion 93 of the stopper 9 with respect to the longitudinal direction of the leg portion 6, and when the intermediate portion 62 rotates, the stopper 64 becomes the circumferential end surface of the protrusion 93. Abut.

  As shown in FIG. 13, the cover 8 mainly extends upward from a rod-shaped portion covering the lever 65 at the tip portion 67 of the lever 65 to form a plate, and constitutes a gripping portion 81. A concave portion 83 is formed on the side surface of the gripping portion 81 on the intermediate portion 62 side. Further, as shown in FIG. 14, a protrusion 41 is formed on the side surface of the cover 4, and as shown in FIG. 15, the cover 8 rotates outward (rotates to the opposite side of the leg portion 7). In this case, the protrusion 41 of the cover 4 fits into the recess 83 of the cover 8 and the cover 8 is locked at that position.

  Next, the operation of the above-described embodiment will be described. When the lower portion 63 of the first leg portion 6 of the side fence 1 and the main body portion 71 of the second leg portion 7 are inserted into the mounting holes 113 of the bed frame 110, as shown in FIGS. The cover 85 of the leg portion 6 and the cover 86 of the second leg portion 7 abut against the upper surface of the cover 111 of the bed frame 110, and insertion of further legs is prevented. In this state, as shown in FIGS. 1 and 2, when the lever 65 is rotated to the leg 7 side via the cover 8, as shown in FIGS. The lower part 63 eccentric with respect to the part 62 rotates to a position far from the leg part 7. For this reason, the distance between the main end portion 71 of the leg portion 7 and the leg lower portion 63 is large (first interval). And since the leg part main-body part 71 and the leg part lower part 63 are inserted in the pair of attachment holes 113 installed in the bed frame, the space | interval of the leg part main-body part 71 and the leg part lower part 63 is carried out. When widened, the leg lower portion 63 and the leg portion 7 are stretched in directions opposite to each other, and the leg lower portion 63 and the leg main body portion 71 are firmly pressed against the inner surface of the mounting hole 113, The lower leg portion 63 and the leg portion main body 71 are fixed to the attachment hole 113 by the frictional force between the lower portion 63 and the leg main portion 71 and the inner surface of the attachment hole 113. Thereby, the side fence 1 is fixedly arranged so as not to come out of the bed frame.

  At this time, as shown in FIGS. 1 and 2, the lever 65 is in the fixed position of the side fence, and the eccentric lower portion 63 of the first leg portion 6 is connected to the main body portion 71 of the other second leg portion 7. Is rotated to a position where the distance between them is the maximum (first interval). That is, the intermediate portion 62 of the first leg portion 6 is rotated by the lever 65, and the entire first leg portion 6 is rotated around the leg upper portion 61 and the intermediate portion 62 concentric with the upper portion 61. The eccentric leg part lower part 63 is rotated to a position farthest from the second leg body part 71. And the 1st leg part 6 has the leg part upper part 61 fixed to the support member main-body part 21 of the flame | frame 2, and the 2nd leg part 7 has the upper end fixed to the flame | frame 2 similarly, The first leg 6 and the second leg 7 exert stress on the mounting hole 113 in the direction of expanding the mounting hole 113. That is, the upper ends of the first leg portion 6 and the second leg portion 7 are fixedly arranged, and stress is exerted in the direction of expanding the attachment hole 113 at both lower portions, and the reaction force causes the first leg portion 6 and the second leg portion 7 to be The lower part 63 of the leg part 6 and the main body part 71 of the second leg part 7 receive stress from the attachment holes 113 in a direction approaching each other. Therefore, in the fixed state of the side fence 1 (FIGS. 1 and 2), the shaft axis of the first leg 6 and the second leg 7 is slightly inclined with an inverted “C” shape. For this reason, as shown in FIG. 20, the site | part which contacts the inner surface of the attachment hole 113 in the 1st leg part 6 and the 2nd leg part 7 is the lower part 63 and the main-body part 71 of the boundary with the level | step differences 69 and 72. The lower end 63 and the shoulder of the main body 71. The lengths of the step 69 and the step 72 are set so that the lower ends of the step 69 and the step 73 pass through them in consideration of the assumed lengths of the cover 111 and the guide 112. Thereby, in the present invention, the leg portion lower part 63 and the shoulder portion of the main body portion 71 are in contact with the inner surface of the mounting hole 113, so that there is no space between the cover 111 and the frame 110 when the cover 111 is not present. Even if the first leg portion 6 and the second leg portion 7 are different from each other, even if the insertion length of the first leg portion 6 and the second leg portion 7 into the attachment hole 113 varies, the first leg portion 6 and the second leg portion 7 are always The shoulder portion of the lower leg portion 63 and the shoulder portion of the main body portion 71 are in contact with the inner surface of the mounting hole 113, and these shoulder portions always receive reaction force from the mounting hole 113. Therefore, when the lever 65 and the cover 8 are rotated to the fixed position of the side fence 1 shown in FIGS. 1 and 2, the lower leg portion 63 is rotated to the position farthest from the main body 71, and the leg The space between the shoulders of the lower part 63 and the main body 71 is always constant. Therefore, even if the contact position of the shoulder portion fluctuates in the vertical direction of the attachment hole 113, the interval between the contact positions of the shoulder portion is always constant and always receives a constant reaction force. Therefore, the first leg 6 and the second leg 7 always have a fixed fixing force regardless of the variation in the insertion depth of the first leg 6 and the second leg 7 into the mounting hole. It is fixed to the mounting hole. When the step 69 and the step 72 do not exist, if the insertion depth of the lower leg portion 63 and the main body portion 71 is different, the pair of leg portions 6 and 7 that are inclined in an inverted “C” shape are It contacts the inner surface of the mounting hole 113 or the inner surface of the cover 111 or the guide 112 at a position in a different direction. Therefore, when the side fence 1 is fixed to the frame 110, the distance between the leg lower part 63 and the leg part 7 differs depending on the insertion depth, and a constant reaction force cannot be received from the attachment hole 113. Accordingly, the fixing force varies.

More specifically, FIG. 21A is a schematic diagram showing the relationship between the pressing depth (insertion length) of the leg portion lower part 63a having no step and the mounting hole 113. FIG. When the pair of eccentric leg lower portions 63a are rotated to positions separated from each other, the leg lower portions 63a come into contact with the upper end edges of the mounting holes 113 at positions separated from each other, and the upper end edges Receive reaction force from. In this case, in the case of shallow Case A indentation depth, as shown in FIG. 21 (b), in contact with a depth position of H _A, in the case of deep case B indentation depth of H _B depth Touch in the position. The higher the position of the lower leg portion 63a that contacts the upper edge of the attachment hole 113, the greater the reaction force received from the upper edge of the attachment hole 113 when the eccentric leg lower part 63a rotates. Since the force for bending the lower part 63a is increased, the fixing force for fixing the leg lower part 63a to the attachment hole 113 is increased. For this reason, the driving force (operating force) necessary for rotating the leg portion also increases. That is, the fixing force and the operating force of case B are larger than those of case A, and the fixing force and the operating force vary due to the difference in the depth of insertion of the lower leg portion 63a into the insertion hole 113.

On the other hand, when the leg lower portion 63 and the leg main body 71 have the steps 69 and 72 as in the embodiment of the present invention shown in FIG. Even if they are different, the positions where the lower leg portion 63 and the main body portion 71 are in contact with the inner surface of the mounting hole 113 are the lower ends of the steps 69 and 72 of the lower leg portion 63 and the main body portion 71, that is, the lower leg portion 63 and the main body. Each of the portions 71 is a shoulder. Therefore, as shown in FIG. 22 (b), the contact position _{H A} of the case A is the same as the contact position _{H B} Case B. For this reason, even if the pushing depth to the attachment hole 113 of the leg part lower part 63 and the main-body part 71 differs, the contact position is the same in both cases A and B. Therefore, in both cases A and B, the fixing force and the operating force are the same, and the fixing force and the operating force are constant even if the pressing depth varies.

  It should be noted that the fixing force and the operation force by providing the step 69 are not limited to the case where the cover 111 is provided as in the above-described embodiment shown in FIG. As shown in FIG. 5, the same function is performed when the cover 111 is not provided on the bed frame 110.

  Next, the locking mechanism of the lever 65 will be described. The lever 65 has a tip 67 facing the leg 7 side, and the lever 65 is parallel to the frame 2 or the cover 4. The relationship between the leg 6 and the stopper 9 at this time is due to the lever 65 rotating counterclockwise as viewed from above, as shown in FIGS. 10B and 12. By rotating clockwise, the leg upper part 61 rotates counterclockwise, and the leg intermediate part 62 integral with the leg upper part 61 also rotates counterclockwise. As a result, the leg intermediate part 62 The provided stopper 64 also rotates counterclockwise and comes into contact with the protrusion 93 at the lower end of the stopper 9. The stopper 64 pushes the protrusion 93 and rotates the stopper 9 counterclockwise. As a result, the protrusion 92 at the upper end of the stopper 9 rotates counterclockwise and finally comes into contact with the locking end portion 23b of the locking portion 22 of the member 2c. In this way, when the projection 92 abuts against the locking end portion 23b, the stopper 9 cannot rotate any more, is blocked by the stopped projection 93, and the leg portion 6 cannot further rotate. As a result, the lever 65 can no longer rotate counterclockwise. Thereby, even if stress is applied to the lever 65 through the cover 8 in a state where the leg portions 6 and 7 are fixed to the mounting holes, the lever 65 rotates to the bed frame side. There is no. Note that a situation in which stress is applied to the lever 65 from the bed frame side will not occur unless a hand is intentionally inserted between the bed frame and the lever 65, and the lever 65 rotates clockwise. Such stress is not inadvertently applied.

  Next, when removing the side fence 1 from the bed frame, a finger is inserted into the hole 82 of the cover 8, the gripping portion 81 is pulled forward, and the lever 65 is rotated clockwise. Then, the cover 8 rotates clockwise from the state shown in FIG. 14, and the recesses 83 of the cover 8 are formed on the protrusions 41 provided on the outer edge of the cover 4 as shown in FIG. Mating. As a result, the lever 65 or the cover 8 is held in a state of being retracted below the cover 4 in parallel with the cover 4 as shown in FIG.

  At this time, the lever 65 is rotated 180 ° from the state of FIG. 2, so that the lower leg portion 63 has a leg portion with respect to the axis of the leg upper portion 61 or the leg middle portion 62. It is biased to the 7th side. That is, the distance between the leg lower part 63 and the leg part 7 is smaller than the state shown in FIG. For this reason, the leg lower part 63 and the leg part 7 and the mounting hole provided in the bed frame are loosely fitted, and the leg lower part 63 and the leg part 7 are directed toward the mounting hole. It is not pressed. Therefore, the leg part lower part 63 and the leg part 7 can be easily pulled out from the attachment hole, and the side fence 1 can be removed easily. Also, since the side fence 1 is not fixed to the bed frame in this way when the side fence 1 is removed, the lever 65 or the cover 8 must be flapped during the side fence removal work. It is sufficient that the protrusion 41 and the recess 83 are engaged with each other so that the protrusion 41 is locked at that position. That is, the non-fixed state of the side rail 1 is not a normal use state of the bed, so that a load is not inadvertently applied to the lever 65, and there is no danger to the patient or the like. For this reason, it is sufficient to lock the lever 65 or the cover 8 to the extent that the protrusion 41 and the recess 83 are engaged. As shown in FIG. 15, since the leg portion is inserted into the mounting hole of the bed frame with the projection 41 engaged with the concave portion 83 and the cover 8 being held, the leg portion can be easily attached. Can be inserted into the hole. Further, when the protrusion 41 is engaged with the recess 83, it is possible to grasp that the side fence is in an unfixed state by visually recognizing the engaged state. Since the click feeling when the protrusion 41 is engaged with the recess 83 can confirm the non-fixed state more reliably than the case of only visual recognition, the safety when removing the side fence is high. That is, if the side fence is forcibly pulled out in a state other than the non-fixed state, the bed and the side rail fixing member may be damaged. Since it can be confirmed, safety when removing the side fence is increased.

  On the other hand, the attachment state of the side fence 1 with respect to the bed is not limited to the case shown in FIG. . In this case, the side fence 1 needs to be turned over in FIG. 1 with respect to the bed. That is, the side fence 1 needs to make the back side part of FIG. 1 the front side. Even in this case, when the leg lower part 63 is eccentric with respect to the leg part 61 so that the distance between the leg lower part 63 and the leg part 7 is widened, the leg lower part 63 and the leg part are arranged. 7 is fixed to the mounting hole.

  However, when the side fence 1 is attached to the bed frame in the reverse direction, the rotation direction of the lever 65 or the cover 8 is different from the case where the side fence 1 is attached to the bed frame as shown in FIG. In the opposite direction. That is, as shown in FIG. 10 (b), in the case of using the side fence described above, when the side fence 1 is fixed, the lever 65 or the cover 8 is rotated counterclockwise as viewed from above, and the leg portion The upper portion 61 is rotated counterclockwise, and as a result, the stopper 9 is also rotated counterclockwise. As a result, the protrusion 92 of the stopper 9 is in contact with the locking end portion 23b of the locking member 22, and the leg portion The lower part 63 is fixed to the attachment hole. On the other hand, when attaching the side fence 1 to the bed frame upside down, pulling the lever 65 or the cover 8 toward the front to fix the lower leg portion 63, the lever 65 or the cover 8 is viewed in a top view. Will be rotated in the direction. In this case, as shown in FIG. 10C, when the lever 65 or the cover 8 is rotated clockwise in the top view and the leg upper portion 61 is rotated clockwise, the leg intermediate portion 62 is obtained. The stopper 64 rotates the stopper 9 clockwise through the protrusion 93, and the protrusion 92 rotates clockwise to contact the locking end 23 a of the locking portion 22. In this state, the lever 65 and the cover 8 face the leg portion 7, and the lower leg portion 63 and the leg portion 7 are pressed against the attachment hole and fixed. Further, at this time, since the projection 92 contacts the locking end portion 23a, the lower leg portion 63 and the leg portion 7 are in a fixed state, and the lever 65 and the cover 8 are in parallel with the cover 4 and then the lever. 65 and the leg 6 do not rotate further clockwise. Therefore, even if a load is inadvertently applied to the lever 65, the lever 65 does not rotate to the bed frame side.

  In this way, in this embodiment, no matter how the side fence 1 is attached to the bed frame, the lever 65 is reliably prevented from rotating to the bed frame side in the fixed state. . That is, in order to make the fixed state, the lever 65 is provided with a rotating stopper 9 so that its locking position can be changed in either case of rotating the lever 65 clockwise or counterclockwise. Thus, in the fixed leg portion, the lever 65 or the cover 8 can always be positioned at a position directly below the cover 4 with the leg portion 7 facing. In either case, the lever 65 Or it can prevent that the cover 8 rotates carelessly to the bed frame side.

  In addition, it is good also as attaching to the cover 8 in the state which elastically biased this toward the leg part 6 side with respect to the lever 65 and the front-end | tip part 67. FIG. In this case, the peripheral portion of the recess 83 provided on the slope of the gripping portion of the cover 8 gets over the projection 41 against the urging force, and the projection 41 is fitted into the recess 83. The engaged state with the concave portion 83 can be held more firmly.

  Next, another embodiment of the present invention will be described. FIG. 16 is a front view showing the entirety of the present embodiment, FIGS. 17A and 17B are views showing the structure of the stopper, and FIG. 18 is a front view showing the mechanism of this stopper. In these drawings, the same members as those in the above-described embodiment of FIG. However, in this embodiment, the stopper 9 is not attached to the leg part 6. Also in this embodiment, when the lever 65 is rotated to the right in front view with respect to the leg portion 6, as in FIGS. 1 and 2, it is between the leg lower portion 63 and the leg portion 7. The leg part lower part 63 and the leg part 7 are pressed against the inner surface of the attachment hole, and the leg part lower part 63 and the leg part 7 are fixed to the attachment hole. On the contrary, when the lever 65 is rotated to the left in front view with respect to the leg portion 6, the lower leg portion 63 and the leg portion 7 are not fixed to the mounting hole, and the side fence 1 is attached to the bed. It can be removed from the mounting hole.

  In the present embodiment, a recess 101 is formed on the hypotenuse on the leg 6 side of the gripping portion 81 of the cover 8 that covers the lever 65. The cover 4 of the frame 2 is also formed with a convex portion 100 at a position facing the concave portion 101. Then, when the convex portion 100 is fitted into the concave portion 101, a stopper mechanism for holding the lever 65 at that position without further rotation is configured. In this case, in the present embodiment, the cover 8 covers the lever 65 and the front end portion 67 in parallel with the virtual surface including the lever 65 and the front end portion 67 so as to overlap the front and back of the virtual surface. 8 is provided with a compression coil spring 102. Further, the cover 8 has a size such that the lever 65 has a slight margin in the longitudinal direction of the lever 65 and the distal end portion 67. The compression coil spring 102 is disposed so as to fit the lever 65, and the end portion 103 on the distal end portion 67 side of the compression coil spring 102 is fixed to the lever 65 or the distal end portion 67. The other end 104 of the compression coil spring 102 is fixed to the inner surface of the cover 8. As a result, a biasing force acts on the cover 8 in the direction in which the compression coil spring 102 extends, and accordingly, a biasing force always acts on the cover 8 toward the leg 6 side.

  Next, operation | movement of the fixing member of this embodiment is demonstrated. By operating the gripping portion 82 of the cover 8, the lever 65 is rotated to the opposite side of the leg portion 6 in front view as shown in FIGS. 16 and 18. Thereby, the leg part lower part 63 which the eccentric of the leg part 6 moves away from the leg part 7, and the space | interval of the leg part 7 and the leg part lower part 63 becomes large. And in the attachment hole standingly arranged by the bed frame, the leg part 7 and the leg lower part 63 are strongly pressed by the inner surface of the attachment hole, and the leg parts 6 and 7 are fixed to the attachment hole. Thereby, the side fence 1 is fixed to the bed frame. At this time, when the cover 8 of the lever 65 rotates counterclockwise in plan view and moves to the above-described fixed state, the cover 8 is urged toward the leg portion 6 by the compression coil spring 102. Therefore, the portion around the concave portion 101 formed on the oblique side of the gripping portion 82 is formed on the cover 4 by slightly moving to the opposite side of the leg portion 6 against the elastic force of the compression coil spring 102. Get over the protrusion 100. When the projection 100 is fitted into the recess 101, the cover 8 returns to the leg 6 side by the biasing force of the compression coil spring 102, and the projection 100 is held in the recess 101. At this time, since the cover 8 is urged toward the leg portion 6 by the compression coil spring 102, the concave portion 101 is not detached from the protrusion 100 even if an external force is inadvertently applied to the cover 8. Therefore, the lever 65 is not inadvertently rotated outward. When removing the side fence 1, the gripping portion 82 is gripped, the cover 8 is intentionally pulled forward, and the cover 8 is rotated clockwise in plan view, as shown in FIGS. It is moved to a position opposite to the position shown (position rotated 180 ° (position shown in FIG. 15)). Thereby, the pressure to the attachment hole of the leg part lower part 63 and the leg part 7 is cancelled | released, and it becomes possible to pull out the leg part lower part 63 and the leg part 7. FIG. In this embodiment as well, when the side fence 1 is mounted on the bed frame upside down, the lever 65 can be held in that position in a fixed state.

  In the present embodiment, in addition to the same effects as the embodiment in which the stopper 9 is provided, it is possible to reliably prevent the lever 65 from being inadvertently rotated forward by an external force in the fixed state. If the lever 65 or the cover 8 as an operation handle receives a large external force and rotates outward (front side), the fixed body between the leg and the mounting hole is released, and the side fence is attached. There is a possibility that the operation handle may come off from the hole, and the operation handle may jump out to the nurse or caregiver, and the nurse or caregiver may come into contact with the operation handle, resulting in a fall and injury. However, in this embodiment, since the fitting state between the protrusion 100 and the recess 101 is securely held by the compression coil spring 102, the lever 65 and the cover 8 will pop out even if a large external force is applied. There is nothing.

  The step 69 and the step 72 are formed by reducing the diameters of the lower leg portion 63 and the main body 71. However, the present invention is not limited to this, and various methods such as scraping on the surface can be used to guide and What is necessary is just to form the part which does not contact the attachment hole inner surface. In addition, it is not always necessary to provide a step in both the first leg portion 6 and the second leg portion 7, and the fixing force can be made constant, and it is only necessary to provide at least one.

  Further, as shown in FIG. 23 (a), a protrusion 120 is provided in place of the step 69 at the shoulder portion of the leg lower portion 63, that is, at the position corresponding to the lower end of the step 69. A protrusion 121 may be provided at the lower end. By doing in this way, even if it does not provide the level | step difference 69, the contact position of the leg part lower part 63a and the attachment hole 113 can be made constant. Furthermore, as shown in FIG. 23B, on the basis of the state in which the cover 111 is provided, when the cover 111 is not used, the bed frame in which the ring-shaped spacer 123 is attached and the hole 113 is provided. By interposing between the upper surface of 110 and the cover 85 of the intermediate portion 62 of the leg portion 6, the pushing depth of the leg portion 6 can be made constant regardless of the presence or absence of the cover 111 for the bed frame 110. .

  In the present invention, when the bed side fence is attached to the bed frame, the leg portion can be fixed with a fixed fixing force while the leg portion is fixed, and the lever is inadvertently rotated toward the bed frame side. This can be reliably prevented with a simple mechanism. For this reason, damage to the bed frame, transfer of caregivers or nurses, or the occurrence of injury can be reliably prevented, and this is extremely useful particularly as a bed apparatus in a hospital or care facility.

1: Side rails 2, 3: Frames 4, 5, 8: Covers 6, 7: Legs 9: Stopper 10: Fixing member 21: Main body 22: Locking portion 23 (23a, 23b): Locking end 41 : Protrusion 61: Leg upper part 62: Leg intermediate part 63: Leg lower part 64: Stopper 65: Lever 67: Tip part 69: Step 71: Body part 72: Step 81: Gripping part 83: Concave part 85: Connecting part Cover 86: Fixed part cover 91: Main body part 92, 93: Protrusion 100: Convex part 101: Concave part 102: Compression coil spring 103: End part (fixed to lever 65)
104: End (fixed to the cover 8)
110: Bed frame 111: Cover 112: Guide 113: Mounting hole

Claims (6)

In the fixing member for the bed side member for fixing the bed side member to the bed frame using the attachment member provided with the pair of attachment holes provided in the bed frame,
A pair of legs supported by the bed side member, at least one of which is rotatable about its axis of rotation;
A lever for rotating at least one of the rotatable legs;
The leg portion rotated by the lever is eccentric with respect to the portion that is inserted into the mounting hole so as to be rotatably supported by the bed side member,
A fixing member for a bed side member, wherein a step having a smaller diameter or a recessed portion is provided at an upper portion of the eccentric portion than at a lower portion of the eccentric portion. In the fixing member of the bed side member for fixing the bed side member to the bed frame, using an attachment member provided with a pair of cylindrical mounting holes provided in the bed frame,
A cylindrical support member provided on the side member with the axial direction perpendicular thereto;
The rod-shaped upper part is inserted into the support member and is supported rotatably about the axis of the support member, and the rod-shaped lower part is eccentric with respect to the axis with respect to the upper part. A first leg that is provided and inserted into the other of the attachment holes;
A rod-shaped second leg portion that is arranged with the axial direction perpendicular to the side member and is inserted into one of the attachment holes;
A lever connected to the upper part of the first leg by a connecting part, and for turning the first leg;
Have
The lower part of the first leg is provided with a step whose side surface or peripheral surface is recessed from the connecting part over a predetermined axial length.
By rotating the lever, the distance between the eccentric lower portion of the first leg and the second leg changes, and the pressing force against the attachment hole changes, whereby the first A fixing member for a bed side member, wherein a fixed state or an unfixed state between a lower portion of the leg portion and the second leg portion and the attachment hole is selected. The support member is
A cylindrical body,
A locking portion formed at the lower end of the main body portion, with a part of the ring missing,
Have
The first leg portion has a protruding convex portion provided on a side surface of the upper portion,
A cylindrical stopper is fitted on the first leg,
The stopper is
A first protrusion formed on the inner surface so as to protrude inward;
A second protrusion formed so as to protrude downward from the lower end thereof;
Have
The stopper is externally fitted to the locking portion, and the first protrusion rotates with respect to the main body portion of the support member so that the missing portion of the locking portion can move.
When the first leg is rotated via the lever, the convex portion is rotated accordingly, and the stopper is rotated by contacting the second protrusion of the stopper,
3. The rotation range of the lever is restricted by the first projection being in contact with either one of the locking end portions of the locking portion of the support member, thereby restricting a rotation range of the lever. The fixing member of the bed side member. The bed side member has a frame cover that covers the side member frame;
The first leg has a lever cover that covers the lever;
A protrusion provided on one of the frame cover and the lever cover when the lever is in a non-fixed state between the lower portion of the first leg and the second leg and the mounting hole. The fixing member for the bed side member according to claim 2, wherein the lever is temporarily held at a position in the non-fixed state by engaging with a concave portion provided on the other side. A stopper provided on the first leg,
A lever cover that covers the lever and is movable in the one direction with respect to the lever;
Have
The stopper is
A first locking portion formed of a concave portion or a convex portion formed in the lever cover;
A second locking portion that is provided on the side member at a position facing the first locking portion in the fixed state and includes a convex portion or a concave portion that can be fitted to the first locking portion;
An elastic member for biasing the lever cover in a direction toward the upper half of the first leg in the one direction;
Have
In the fixed state, the lever cover is given an urging force in a direction in which the fitting state between the first locking portion and the second locking portion is maintained by the elastic member. The fixing member of the bed side member according to claim 2. In the fixing member of the bed side member for fixing the bed side member to the bed frame, using an attachment member provided with a pair of cylindrical mounting holes provided in the bed frame,
A pair of legs that are supported parallel to each other by the bed side member, at least one of which is rotatable about its axis of rotation;
A lever for rotating at least one of the rotatable legs;
The leg portion rotated by the lever is eccentric with respect to the portion that is inserted into the mounting hole so as to be rotatably supported by the bed side member,
The bed side member fixing member, wherein the eccentric portion is provided with a projection for making the contact position with the attachment hole constant.

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