CN101099707B - Support strip locking mechanism for side fence of sleep platform for beds - Google Patents

Abstract

The stay locking mechanism for the side rails of a supine platform such as a bed according to the present invention uses a first stay (13) and a second stay that can rotate around an axis that is arranged at intervals in the up and down direction and that corresponds to the length direction of the bed. The side rail body (8) can move up and down on the side of the bed through the bar (14), and can be fixed in the raised position, the locking piece (29) with the hook portion (30) formed, and the handle for operating it The operating rod (23) is rotatably supported on the support member of the first stay, and the lock pin (21) that can be engaged with the hook is supported on the support member of the second stay. A force applying device (32) and a fork (31) facing the direction of the locking pin are arranged on the sheet, and an engaging portion (26) that engages with the fork in a relatively movable manner is provided on the operating rod. Adopting the present invention does not connect the intermediate link between the locking piece engaged with the locking pin and the operating rod like the existing side rail stay locking mechanism, so the number of parts can be reduced, the assembly man-hours can be reduced, and the cost.

Description

Stay locking mechanism for the side rails of the supine bench

technical field

The present invention relates to a stay locking mechanism for a side rail of a bed or other supine platform, and more particularly to a stay locking mechanism for a side rail of a bed or other supine platform as described below, which uses a The first stay and the second stay that rotate on the axis corresponding to the length direction of the supine platform can move the side rail body up and down on the side of the supine platform, and can be fixed at the raised position.

Background technique

The side rail body can move up and down on the side of the bed by using the first stay and the second stay that are arranged at intervals in the up and down direction and rotate about the axis corresponding to the length direction of the bed, and can be moved up and down in the raised position. As a fixed side rail locking mechanism, conventionally there is a side rail locking mechanism disclosed in Patent Document 1, for example.

18 and 19 are views showing side rails and their locking mechanisms shown in Patent Document 1. FIG. In these figures, the depth direction corresponds to the length direction of the bed, and reference numeral 101 denotes a bed, 102 denotes a bed frame, and 103 denotes a bed bottom board. Symbol 104 is a side rail body, and 105 is a bracket for installation on the bed frame 102. The side rail body 104 utilizes first and second link arms 106 and 107 connected between it and the bracket 105 for installation. Supported to move up and down. As shown in the figure, the first and second link arms 106, 107 can rotate around the axes 106a, 106b, 107a, 107b corresponding to the length direction of the bed 101 on the side rail body 104 and the bracket 105 for installation. , the second link arms 106, 107, the side rail body 104, and the mounting bracket 105 constitute a parallel four-bar linkage mechanism.

In the side rail of the above structure, the lock mechanism of the structure shown below is provided. That is, on the first link arm 106, a lock piece 109 is fixed rotatably around the shaft 109a. The locking pin 110 engages the hook 108 of the hook 109 . Furthermore, an operating lever 111 is provided on the first link arm 106 so as to be rotatable about a shaft 111 a, and the operating lever 111 is connected to the lock piece 109 via an intermediate link 112 .

Reference numeral 113 denotes a spring that urges the lock piece 109 in the direction in which the hook portion 108 engages with the lock pin 110, and reference numeral 114 denotes a buffer connected between the first link arm 106 and the mounting bracket 105 ( tampa one).

In the above structure, the rotation of the first and second link arms 106, 107 is used to raise the side rail body 104. As shown in FIG. When the pin 110 is engaged, the first link arm 106 is prevented from descending, so that the side rail body 104 is held in a raised state on the side of the bed floor 103 .

Then, when the side rail body 104 is lowered to the storage position, if the operating lever 111 is rotated in the direction of the arrow in the figure, that is, counterclockwise, the middle link 112 will move to the right in the figure and the locking piece 109 will move to the right in the figure. Rotate clockwise, so the locking piece 109 rotates as shown by the two-dot chain line in the figure, and the engagement between the locking piece 109 and the locking pin 110 is released.

Therefore, in this released state, as shown in FIG. 19 , the first and second link arms 106 and 107 can be rotated clockwise in the drawing to lower the side rail body 104 to the stowed position.

Patent Document 1: Japanese Patent No. 3321174

In the locking mechanism of the above-mentioned prior art, since an intermediate link is connected between the locking piece engaged with the locking pin and the operating rod, the number of parts is large, and the assembly man-hours are many, and there is a problem of high cost. .

In addition, the operating force generated by the operating lever is not directly transmitted to the locking piece, so it is difficult to know from the outside whether the operation has been reliably performed.

Furthermore, the locking pin for engaging the hook-shaped portion of the locking piece is provided on the mounting bracket of the bed frame, and it is impractical to extend the distance between the locking pin and the operating rod. There are very few degrees of freedom.

Contents of the invention

The object of the present invention is to solve the above-mentioned conventional problems, and to provide a stay locking mechanism for a side rail of a supine platform such as a bed, which has a small number of parts and can be operated reliably.

Another object of the present invention is to easily and reliably confirm from the outside whether the operation of the operating lever is reliably performed.

In order to achieve the above object, the present invention proposes a stay locking mechanism for side rails of a supine platform such as a bed, wherein the side rails are rotatable around an axis arranged at intervals in the up and down direction and corresponding to the length direction of the bed. The stay and the second stay allow the siderail body to move up and down on the side of the bed and can be fixed in the raised position. The locking piece formed with the hook and the operating lever for operating the locking piece are rotatable. Supported on the support member of the first stay, the lock pin that can be engaged with the hook portion is supported on the support member of the second stay, and the lock piece is provided with a force in the direction of the lock pin. The force device and the fork are provided on the operating lever with an engaging portion that engages with the fork so as to be relatively movable.

In addition, the present invention proposes a side rail stay locking mechanism for a supine platform such as a bed with the following structure. As another structure, the side rail utilizes a first shaft that can be rotated around an axis arranged at intervals in the up and down direction and corresponding to the length direction of the bed. The stay and the second stay allow the siderail body to move up and down on the side of the bed and can be fixed in the raised position. The locking piece formed with the hook and the operating lever for operating the locking piece are rotatable. The lock pin is supported on the support member of the first stay, the lock pin engageable with the hook portion is supported on the support member of the second stay, the fork is provided on the operation lever, and the The locking piece is provided with an engaging portion that can move relatively and engage with the fork, and the locking piece is provided with a force applying device in the direction of the locking pin.

Furthermore, the present invention proposes a side rail stay locking mechanism for a supine platform such as a bed. In the above-mentioned structure, the first stay and the second stay are arranged between a pair of link arms respectively arranged left and right. The support member of the first stay and the support member of the second stay are combined.

Furthermore, the present invention proposes a siderail stay locking mechanism for a bed or other supine platform, in which the pair of link arms of the first stay are arranged on the pair of link arms of the second stay. outside of the arm.

The present invention proposes a side rail stay locking mechanism for a supine platform such as a bed. In the above structure, one end side of the first stay and the second stay is rotatably fixed to a mounting member attached to the side rail body. On, their other end side is rotatably fixed on the installation part that bed frame is installed.

The present invention proposes a side rail stay locking mechanism for a supine platform such as a bed with the following structure. In the above structure, the supporting member of the first stay is provided with a front cover that can operate the operating lever, and the hook-shaped portion of the locking piece The front portion of the operation lever is in a position where it does not protrude from the surface of the front cover when it is normally engaged with the lock pin, and becomes a position where it protrudes from the front cover when the operation lever is operated.

The present invention proposes a side rail stay locking mechanism for a supine platform such as a bed, in which a portion of a different color is formed on a side portion protruding from the front cover when the operating lever is operated.

In addition, the present invention proposes a side rail stay locking mechanism for a supine platform such as a bed. In the above structure, the operating lever is provided with a rotation limiter that abuts against the supporting member of the second stay when moving in the operating direction. butt joint.

In the present invention, since the operating force generated by the operating lever is directly transmitted to the locking piece through the fork and the engaging portion movably engaged therewith, the locking piece and the locking pin can be reliably disengaged.

In addition, in the present invention, since no intermediate link or the like is interposed between the operating lever and the lock piece, as described above, reliable operation can be performed and the number of parts can be reduced, thereby reducing cost.

When the hook portion of the lock piece is normally engaged with the lock pin, arrange the front portion of the hook portion at a position where it does not protrude from the surface of the front cover, and when operating the lever, arrange it at a position where it protrudes from the front cover. Occasionally, when performing the operation of engaging the hook-shaped portion of the locking piece with the locking pin, by checking with the eyes whether the front of the operating lever protrudes, it can be known from the outside whether the engagement is reliable or whether it is incomplete. Snap.

For example, when the operation lever is operated, if a part of a different color is formed on the side part protruding from the front cover, it will be easy to check with the eyes.

In addition, if the operation lever is provided with a rotation limiting abutting portion that abuts against the support member of the second stay during movement in the operation direction, damage to the mechanism elements due to forced operation of the operation lever can be prevented.

Description of drawings

Fig. 1 is a perspective view of a bed using the mechanism of the present invention.

Fig. 2 is a front view of a bed using the mechanism of the present invention.

Fig. 3 is a perspective view of a state in which the side rail is detached from the bed as seen from the front side.

Fig. 4 is a perspective view of the side rail detached from the bed seen from the rear side.

Fig. 5 is a perspective view seen from the front side in a state where the side rail main body and the front cover of the mechanism part are removed.

Fig. 6 is an enlarged view of the main part in Fig. 5 .

Fig. 7 is an enlarged sectional view of main parts taken along line A-A in Fig. 6 .

Fig. 8 is an enlarged cross-sectional view of main parts taken along line A-A in Fig. 6, showing a state different from Fig. 7 .

Fig. 9 is an enlarged cross-sectional view of main parts taken along line A-A in Fig. 6, showing a state different from Figs. 7 and 8 .

Fig. 10 is a sectional view of main parts showing the operation of raising and lowering the side rail.

Fig. 11 is a sectional view of main parts showing the operation of raising and lowering the side rail, showing a state different from that in Fig. 10 .

Fig. 12 is a sectional view of main parts showing the operation of raising and lowering the side rail, further showing another state.

Fig. 13 is a sectional view of main parts showing the operation of raising and lowering the side rail, further showing another state.

Fig. 14 is a cross-sectional view of main parts showing the lifting operation of the side rail, showing the stowed state of the side rail main body.

Fig. 15 is an external view of the side rail seen from the rear side.

Fig. 16 is an external view of the side rail viewed from the front side in different states.

Fig. 17 is an appearance view seen from the rear side.

Fig. 18 is a side view showing a conventional side rail locking mechanism.

Fig. 19 is a side view showing another state of the conventional side rail locking mechanism.

Detailed ways

Next, an embodiment of a stay locking mechanism for a side rail of a bed or other supine platform according to the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view of a bed to which the stay locking mechanism of the present invention is applied, and Fig. 2 is a front view. Reference numeral 1 generally indicates a bed, 2 is a bed frame that can be raised and lowered above the base 3, and 4 is a bed base that can be divided into a plurality of bed parts 4a, 4b, 4c, and 4d and can be raised and lowered. Symbol 5a is a headboard, 5b is a footboard, 6a is a hand-held operator for operating the ups and downs of the bed base 4, and 6b is a nursing operator for operating the ups and downs of the bed base 4 . Reference numeral 7 schematically represents a side column of the present invention. The operation of the bed 1 described above is very obvious, so the explanation is omitted.

The side rail 7 of the present invention is roughly composed of a side rail body 8 and a mechanism part 9 , and the mechanism part 9 is provided with an installation frame 10 for being installed on the bed frame 2 . Next, the mechanism part 9 will be described in detail, but Fig. 3 and Fig. 4 referred to at this time are perspective views of the state after the side rail 7 is removed from the bed 1 from the front side and the back side respectively, and Fig. And the perspective view seen from the front side in the state after the front cover of the mechanism part 9 is removed, Fig. 6 is an enlarged view of the main part of Fig. 5 . 7 to 9 are enlarged sectional views of main parts taken along line A-A in FIG. 6 .

That is, the side rail of the present invention utilizes the first stay 13 and the second stay 14 that can rotate around the shafts 11a, 11b, 12a, 12b that are arranged at intervals in the vertical direction and correspond to the longitudinal direction of the bed 1 to make the side The column body 8 can move up and down on the side of the bed 1, and can be fixed in the raised position. The fixable mechanism in this raised position is the stay lock mechanism 15 in the present invention.

As shown in the figure, the first stay 13 and the second stay 14 are formed by connecting support members 18 and 19 between a pair of link arms 16 and 17 respectively disposed on the left and right. In this structure, the pair of link arms 16 of the first stay 13 is arranged outside the pair of link arms 17 of the second stay 14 .

The support member 19 of the second stay 14 is plate-shaped, and the lock pin 21 is supported by the support frame 20 on the support member 19 .

On the other hand, the support member 18 of the first stay 13 is formed in a curved plate shape protruding toward the support member 19 between the link arms 17 across the link arms 17 of the second stay 14 . And on support member 18, be fixed with utilize shaft 22 rotatable operating lever 23, the top of operating lever 23 is formed with plate-shaped part 24, is formed on the support frame 25 that protrudes on this plate-shaped part 24 and is formed with bar-shaped part 26. . Also supported on the support member 18 is a lock piece 29 that is rotatable about a shaft 28 supported by the support frame 27 . The shaft 28 of the locking piece 29 is located at the middle position in the up-down direction. A hook portion 30 engageable with the locking pin 21 is formed on the upper portion of the locking piece 29 , and a fork portion 31 is formed on the lower portion. The rod-shaped portion 26 is engaged with the fork-shaped portion 31 so as to be relatively movable. In addition, a torsion coil spring 32 is provided on the lock piece 29 to bias the lock piece 29 in a direction to engage with the lock pin 21 . On the front side of the plate-shaped portion 24 of the operating lever 23 , a rotation restricting abutting portion 33 is formed that abuts against the plate-shaped supporting member 19 of the second stay 14 to restrict rotation when the operating lever 23 is rotated. Reference numeral 34 is an attachment member attached to the side rail main body 8 .

The mechanism unit 9 composed of the above components is covered with a front cover 35 that can operate the operation lever 23 .

In the above structure, when the rotation of the link arms 16 and 17 constituting the first and second stays 13 and 14 is used to make the side rail body 8 rise in parallel, as shown in FIGS. 5 to 7 and 10, The hook portion 30 of the lock piece 29 is engaged with the lock pin 21 by the biasing force of the torsion coil spring 32, thereby preventing the first stay 13 and the second stay 14 from moving relative to each other, and preventing the link arm 16, 17 is lowered, and therefore, the side rail body 8 is held in the raised state on the side of the bed floor 4 .

Then, when the side rail body 8 is lowered to the stowed position, if the operating lever 23 is rotated clockwise in the direction of the arrow in FIG. The portion 26 presses the lock piece 29 while relatively moving inside the fork portion 31 , so that the lock piece 29 rotates counterclockwise against the urging force of the torsion coil spring 32 . Thus, when the lock piece 29 turns counterclockwise, as shown in FIG. 8 , the hook portion 30 of the lock piece 29 disengages from the lock pin 21 , and the engagement is released.

In this way, when the engagement between the hook portion 30 of the locking piece 29 and the locking pin 21 is released, the first stay 13 and the second stay 14 can move relatively, and the link arms 16, 17 can rotate and descend, as shown in Fig. 11 can reach the storage position shown in FIG. 14 through the state of FIG. 12 and FIG. 13 . Fig. 15 is a perspective view of the side column 7 in the state of Fig. 12 from the rear side, similarly, Fig. 17 is a perspective view of the side column 7 in the state of Fig. 14 from the rear side, and Fig. 16 is a perspective view of the state of Fig. 14 from the front side Perspective view of sidebar 7.

In this way, in the present invention, the operating lever 23 and the locking piece 29 directly transmit the operating force through the engagement of the rod-shaped portion 26 and the fork-shaped portion 31 without intermediate components such as the intermediate link rod as in the above-mentioned prior art, so it can be reliably and smoothly. to operate. In addition, since intermediate parts are not required, the number of parts can be reduced and the cost can be reduced.

In this embodiment, since the rotation limiting abutting portion 33 is formed on the front side of the plate-like portion 24 of the operating lever 23, it can prevent the operating lever 23 from being rotated more than necessary, and can prevent mechanical elements such as the locking piece 29 from being affected by the rotation. Damage caused by a load in excess of what is necessary.

To make the side rail body 8 in the stored state into the use state, lift the side rail body 8 to make the link arms 16, 17 that constitute the first stay 13 and the second stay 14 rotate and rise, and the side rail body 8 is parallel to it. Ascent, can be used as a position.

If the side rail body 8 rises to the use position, the hook-shaped portion 30 of the locking piece 29 will go over the locking pin 21 and engage. As mentioned above, the first stay 13 and the second stay 14 will not move relative to each other, so they are prevented from moving. Since the link arms 16 and 17 are lowered, the side rail main body 8 is held in a raised state on the side of the bed floor 4 and can be used safely.

However, in the engaging action of the above-mentioned hook-shaped portion 30 and the locking piece 21, sometimes there is such a situation: the movement of the hook-shaped portion 30 is hindered due to some reasons, for example, as shown in FIG. The state in which the locking pin 21 is not completely engaged on the way is a so-called half-engaged state. If the side rail body 8 is used without knowing the half-engagement state, the side rail body 8 will fall down unintentionally, which is dangerous.

On the other hand, in this embodiment, in the state where the hook portion 30 of the lock piece 29 is normally engaged with the lock pin 21, the front portion of the operating lever 23 is at a position where it does not protrude from the surface of the front cover 35, and in an abnormal state. In the engaged state, the front part of the operation lever 23 protrudes from the front cover 35. Therefore, by visually confirming that the operation lever 23 protrudes from the front cover 35, the half-engagement state can be confirmed from the outside, and the operation is performed again to make the normal engagement. , thus forming a safe state of use.

At this time, for example, if the side portion of the operating lever 23 protruding from the front cover during operation forms a part of a different color (not shown), the difference in color can be confirmed with the eyes, so that the position of the operating lever 23 from the front cover 35 can be easily confirmed with the eyes. protrude.

In the embodiment described above, although a rod-shaped portion is provided on the side of the operating lever 23 and a fork-shaped portion 31 is provided on the side of the locking piece 29, conversely, a fork-shaped portion may be provided on the side of the operating lever 23 and a fork-shaped portion may be provided on the side of the locking piece 29. A rod-shaped portion is provided on the side.

Industrial Applicability

As mentioned above, the present invention has the following advantages:

1. The operating force generated by the operating lever is directly transmitted to the locking piece through the fork and the engaging portion movably engaged with it, so that the locking piece can be reliably released from the locking pin;

2. Since there is no intermediate connecting rod and other components between the operating rod and the locking piece, it can be operated reliably and the number of parts is reduced, thereby reducing costs;

3. When using the operating lever to engage the hook-shaped portion of the locking piece with the locking pin, by checking with your eyes whether the front of the operating lever protrudes, you can know from the outside whether it is reliably engaged or whether it is halfway. Incomplete snap. In this case, if different color parts are formed on the side parts protruding from the front of the cover when the operation lever is operated, it is easy to recognize with eyes;

4. If the rotation limiting abutment is provided on the operating lever, it can prevent damage to the mechanism elements caused by the forced operation of the operating lever;

5. The locking action of the hook portion of the locking piece and the locking pin is a structure that prevents the relative movement of the first stay and the second stay, so it is different from the structure in which the locking pin is installed on the mounting bracket of the bed frame. In comparison, the degree of freedom of the installation position of the operation lever is high.

The above-mentioned mechanism of the present invention can also be used for a supine platform such as a medical table or a patient transport cart, in addition to being used for a bed.

Claims (8)

1. A stay locking mechanism for a side rail of a supine platform, wherein the side rail is formed by using a first stay and a second stay that are rotatable around an axis that is spaced apart from each other in the up and down direction and that corresponds to the length direction of the supine platform. The siderail body moves up and down on the side of the supine platform and can be fixed at the raised position. It is characterized in that the locking piece formed with the hook-shaped part and the operating lever for operating the locking piece are rotatably supported on the said locking piece. On the support member of the first stay, the lock pin that can be engaged with the hook portion is supported on the support member of the second stay, and the force applying device and the fork in the direction of the lock pin are provided on the lock piece. The operating rod is provided with an engaging portion that engages with the fork in a relatively movable manner. 2. A stay locking mechanism for a side rail of a supine platform, wherein the side rail is formed by using a first stay and a second stay that can be rotated around an axis that is arranged at intervals in the up and down direction and that corresponds to the length direction of the supine platform. The siderail body moves up and down on the side of the supine platform and can be fixed at the raised position. It is characterized in that the locking piece formed with the hook-shaped part and the operating lever for operating the locking piece are rotatably supported on the said locking piece. On the support member of the first stay, the lock pin that can be engaged with the hook portion is supported on the support member of the second stay, a fork is provided on the operation lever, and a fork is provided on the lock piece. An engaging portion capable of engaging with the fork portion so as to be relatively movable is provided, and an urging device in the direction of the locking pin is provided on the locking piece. 3. The stay locking mechanism of the side rail of the supine platform as claimed in claim 1 or 2, characterized in that, The first stay and the second stay are formed by coupling the support member of the first stay and the support member of the second stay between a pair of link arms respectively disposed on the left and right. 4. The stay locking mechanism of the side rail of the supine platform as claimed in claim 3, characterized in that, The pair of link arms of the first stay is disposed outside the pair of link arms of the second stay. 5. The stay locking mechanism of the side rail of the supine platform as claimed in claim 1 or 2, characterized in that, One end side of the first stay and the second stay is rotatably fixed to the mounting part installed to the side rail body, and their other end side is rotatably fixed to the mounting part installed to the supine platform. 6. The stay locking mechanism of the side rail of the supine platform as claimed in claim 1 or 2, characterized in that, The support member of the first stay is provided with a front cover that can operate the operating lever. The operating lever is arranged as follows: When the hook portion of the locking piece is normally engaged with the locking pin, the front part of the operating lever is in a position that does not protrude beyond the The position of the surface of the front cover becomes the position where it protrudes from the front cover when the operation lever is operated. 7. The stay locking mechanism of the side rail of the supine platform as claimed in claim 6, characterized in that, A portion of a different color is formed on a side portion protruding from the front cover when the operation lever is operated. 8. The stay locking mechanism of the side rail of the supine platform as claimed in claim 1 or 2, characterized in that, The operation lever is provided with a rotation restricting abutment portion which abuts against the support member of the second stay during movement in the operation direction.

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