CN109561764B

CN109561764B - Mattress dislocation preventing part and bed device

Info

Publication number: CN109561764B
Application number: CN201780031287.6A
Authority: CN
Inventors: 影山男; 松本孝树; 大平和幸; 舟越敬介; 永松刚太
Original assignee: Paramount Bed Co Ltd
Current assignee: Paramount Bed Co Ltd
Priority date: 2016-08-26
Filing date: 2017-07-18
Publication date: 2022-05-03
Anticipated expiration: 2037-07-18
Also published as: JP6619711B2; CN109561764A; JP2018029889A; WO2018037773A1

Abstract

A mattress dislocation prevention element for limiting the displacement of a mattress in a bed, comprising: a long-side regulating section that regulates displacement of the mattress in a long-side direction of the bed; and a short-side regulating unit that regulates displacement of the mattress in the short-side direction of the bed, wherein the relative position between the long-side regulating unit and the short-side regulating unit is fixed.

Description

Mattress dislocation preventing part and bed device

Technical Field

The invention relates to a mattress dislocation prevention member and a bed device.

This application is based on the priority claim of Japanese patent application No. 2016-165811, filed in Japan on 26.8.2016, and the contents of which are incorporated herein by reference.

Background

Conventionally, as a mattress displacement preventing member, for example, as shown in patent document 1 listed below, a mattress displacement preventing member that restricts a horizontal displacement of a mattress on a bed is known.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2014-223183

Problems to be solved by the invention

However, in the conventional mattress displacement preventer described above, since only the displacement of the mattress in the lateral direction of the bed is restricted, there is a possibility that the mattress may be displaced with respect to the bed due to, for example, a change in posture of the user, a change in shape of the bed, or the like.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object thereof is to provide a mattress displacement preventing tool and a bed device capable of reliably limiting the horizontal displacement of a mattress with respect to a bed.

Means for solving the problems

In order to solve the above problems, the present invention proposes the following means.

(1) One aspect of the present invention is a mattress displacement preventing member that restricts displacement of a mattress on a bed, the mattress displacement preventing member including: a long-side regulating section that regulates displacement of the mattress in a long-side direction of the bed; and a short-side regulating unit that regulates displacement of the mattress in the short-side direction of the bed, wherein the relative position between the long-side regulating unit and the short-side regulating unit is fixed.

According to the present invention, since the relative position between the long-side regulating portion and the short-side regulating portion is fixed, it is possible to receive the external force from the mattress along either the long-side direction or the short-side direction not only by either the long-side regulating portion or the short-side regulating portion but also by the other of the long-side regulating portion and the short-side regulating portion. Therefore, even when the external force transmitted from the mattress is large, the external force can be reliably received by the mattress displacement preventer. This can reliably restrict the horizontal displacement of the mattress with respect to the bed.

In addition, the relative position between the long-side regulating portion and the short-side regulating portion is fixed. Therefore, for example, by attaching the mattress displacement preventer to a corner portion of a mattress placement portion in a bed, displacement of the mattress in both the longitudinal direction and the lateral direction of the bed can be effectively restricted by one mattress displacement preventer. This can reduce the number of components.

(2) A mattress displacement prevention tool according to the above (1), wherein the mattress displacement prevention tool may be configured to: the long side restriction portion and the short side restriction portion are integrally formed.

In this case, since the long-side restriction portion and the short-side restriction portion are formed integrally, it is not necessary to provide a member for connecting the long-side restriction portion and the short-side restriction portion to each other, and the mattress displacement preventer can be firmly formed with a simple structure.

(3) The mattress displacement preventing member according to the above (1) or (2), wherein: the long side limiting part is provided with a first mounting part which is mounted on the bed, and the short side limiting part is provided with a second mounting part which is mounted on the bed.

In this case, since both the long-side regulating portion and the short-side regulating portion are attached to the bed by the first attachment portion and the second attachment portion, the mattress displacement preventer can be firmly attached to the bed, compared to a structure in which only one of the long-side regulating portion and the short-side regulating portion is attached to the bed.

(4) The bed device of the present invention is characterized by comprising: the bed; and the mattress displacement preventer of any one of (1) to (3) above.

In this case, the bed device can be made to achieve the above-described various effects.

(5) The bed device according to the above (4), wherein: the bed is provided with a first fitting portion for fitting the first fitting portion and a second fitting portion for fitting the second fitting portion, the first fitting portion being fitted to the first fitting portion, the second fitting portion being fitted to the second fitting portion.

In addition, since the bed device is provided with the first fitting-receiving portion and the second fitting-receiving portion into which the first mounting portion and the second mounting portion are fitted, respectively, the mattress displacement preventive member can be easily mounted on the bed device.

(6) The bed device according to the above (5), wherein: the fitting direction between the first mounting portion and the first fitted portion and the fitting direction between the second mounting portion and the second fitted portion are different from each other.

In this case, the direction in which the first mounting portion is fitted to the first fitted portion and the direction in which the second mounting portion is fitted to the second fitted portion are different from each other. Therefore, the direction in which the first mounting portion is detached from the first fitted portion and the direction in which the second mounting portion is detached from the second fitted portion are different from each other. Therefore, even if an external force is accidentally applied to the mattress displacement preventer 15, the fitting between the first attachment portion and the first fitting target portion and the fitting between the second attachment portion and the second fitting target portion can be prevented from being simultaneously released.

Effects of the invention

According to the present invention, the horizontal displacement of the mattress with respect to the bed can be reliably restricted.

Drawings

Fig. 1 is a perspective view of a bed device according to an embodiment of the present invention.

Fig. 2 is a side view of the bed arrangement shown in fig. 1.

Fig. 3 is a top view of the bed arrangement shown in fig. 1.

Fig. 4 is a bottom view of the bed arrangement shown in fig. 1.

Fig. 5 is an exploded perspective view of the bed device shown in fig. 1, and is a view showing a state in which the bottom plate is removed.

Fig. 6 is a perspective view showing a state where the leg is lifted in the bed device shown in fig. 1.

Fig. 7 is a side view of the bed arrangement shown in fig. 6.

Fig. 8 is an enlarged perspective view of a main part in the bed device shown in fig. 6.

Fig. 9 is an enlarged perspective view of a mattress misalignment preventing member of the bed device shown in fig. 1.

Detailed Description

Hereinafter, the mattress displacement preventing member 15 and the bed device 10 according to the embodiment of the present invention will be described with reference to fig. 1 to 9. The bed device 10 can be used in, for example, a medical environment (including a nursing environment) or a general home environment. In fig. 1 to 9, arrow H indicates the direction of the head side H when a person (user) is sleeping, and arrow F indicates the direction of the foot side F when a person is sleeping. In the following description, a horizontal direction perpendicular to the front-rear direction, which is the direction of arrow H, F, may be referred to as a left-right direction. The front-rear direction and the left-right direction are both directions along the horizontal direction.

As shown in fig. 1 to 9, the bed device 10 includes a bed 11, a support frame 12, a plate 13, and a drive mechanism 14. The bed device 10 is a so-called electric bed using electric power as a power source.

The bed 11 is longer in the front-rear direction than in the left-right direction in a plan view. The longitudinal direction of the bed 11 is the front-rear direction, and the short-side direction of the bed 11 is the left-right direction. A mattress not shown is disposed on the bed 11. The user lies on the bed 11 via the mattress.

The bed 11 includes a back floor 21, a waist floor 22 and a leg floor 23. The back chassis 21, the waist chassis 22, and the leg chassis 23 are arranged in this order from the head side H toward the foot side F. The back floor 21 supports the back of the user. The lumbar support plate 22 supports the user's lumbar region. The leg bottom plate 23 supports the legs of the user.

The leg bottom panel 23 includes a knee bottom panel 24 and a foot bottom panel 25. The knee bottom plate 24 and the foot bottom plate 25 are arranged in this order from the head side H toward the foot side F. The knee bottom plate 24 supports the knees to the waist of the user. The foot sole plate 25 supports the user's knees to toes.

The support frame 12 supports the bed 11. The support frame 12 receives the load of the bed 11 and the user on the bed 11. As shown in fig. 5, the support frame 12 includes a main body frame 31 and a grounding portion 32.

The body frame 31 supports the bed 11. The main body frame 31 has a rectangular shape in plan view. The main body frame 31 includes an outer frame portion 33 and an inner frame portion 34.

The outer frame portion 33 forms an outer peripheral edge portion of the main body frame 31 and is disposed on an outer peripheral edge portion of the support frame 12. The outer frame portion 33 is formed in a C-shape that opens toward the head side H in plan view. The outer frame portion 33 includes a first frame member 35 and a second frame member 36.

The first frame member 35 extends in the left-right direction. The first frame member 35 is disposed at the end of the leg side F of the support frame 12.

The second frame member 36 extends in the front-rear direction. A pair of second frame members 36 are provided at intervals in the left-right direction. The second frame member 36 extends from the end in the left-right direction of the first frame member 35 toward the head side H along the front-rear direction. The second frame part 36 is immovably fixed to the first frame part 35. The first frame member 35 and the second frame member 36 form a corner portion of the outer frame portion 33 by being connected to each other. The second frame member 36 is welded (fixedly attached) to the first frame member 35.

A curtain plate 37 is attached to the outer frame portion 33. The curtain plate 37 covers the outer frame portion 33 from the side. The curtain plates 37 include a first curtain plate 38, a second curtain plate 39, and a corner curtain plate 40. The first curtain plate 38 covers the first frame member 35 from the side. The second curtain plate 39 covers the second frame member 36 from the side. The corner curtain plate 40 covers the corner portion.

The inner frame portion 34 is disposed inside the outer frame portion 33 in plan view. The inner frame portion 34 includes a cross member 41 and a longitudinal member 42. The cross member 41 extends in the left-right direction. The cross member 41 connects the pair of left and right second frame members 36 in the left-right direction. The horizontal member 41 is disposed in a pair in the front and rear. The cross member 41 is immovably fixed to the second frame member 36. The cross member 41 is welded (fixedly attached) to the second frame member 36.

The longitudinal member 42 extends in the front-rear direction. The vertical member 42 connects a pair of front and rear horizontal members 41 in the front-rear direction. The vertical members 42 are arranged in a pair in the left-right direction. The end portion of the vertical member 42 on the head side H is arranged at the same position as the end portion of the second frame member 36 on the head side H in the front-rear direction. The longitudinal member 42 is immovably fixed to the lateral member 41. The vertical member 42 is welded (fixedly attached) to the horizontal member 41.

The ground portion 32 is grounded to the ground plane. The land portions 32 are arranged in a pair in the left-right direction, and the land portions 32 of the left-right pair are arranged in a pair in the front-rear direction. Four grounding portions 32 are provided in total. The grounding part 32 is connected to the vertical member 42.

As shown in fig. 6 and 7, the support frame 12 supports a part (movable floor) of the bed 11 rotatably about a rotation shaft 26 extending in the left-right direction. The bed arrangement 10 is a so-called movable backrest bed. In the present embodiment, the waist bottom plate 22 is fixed to the support frame 12, and the back bottom plate 21 and the leg bottom plates 23 are rotatably connected to the waist bottom plate 22.

The rotating shaft 26 includes: a first rotation shaft 26a connecting the back chassis 21 and the waist chassis 22; and a second rotation shaft 26b connecting the leg chassis 23 and the waist chassis 22.

The knee bottom plate 24 and the foot bottom plate 25 are rotatably connected around a buckling shaft 27 extending in the left-right direction. Therefore, when the leg bottom plate 23 is rotated about the second rotation shaft 26b and the bed apparatus 10 is in the leg-up state, the leg bottom plate 23 is flexed, so that the flexed shaft 27 is protruded.

As shown in fig. 6 to 8, a leg support 43 is rotatably connected to the leg bottom plate 23. The foot bracket 43 holds the leg bottom plate 23 in a toe-up state. In the leg bottom plate 23 in the toe-up state, the foot bottom plate 25 extends in parallel in the horizontal direction. The leg bracket 43 is formed in an elongated shape extending in the front-rear direction.

The first end 43a and the second end 43b of the leg bracket 43 are rotatably fixed to the leg base plate 25 and the main body frame 31, respectively. The first end 43a of the foot bracket 43 is fixed to the foot sole plate 25 substantially non-detachably. The second end 43b of the leg bracket 43 is detachably fixed to the main body frame 31. When the leg bottom plate 23 is in the toe-up state, the leg links 43 extend obliquely downward from the leg bottom plate 25 toward the head side H.

As shown in fig. 1 to 9, the plate 13 is disposed at an end portion in the front-rear direction of the support frame 12. The plate 13 is formed in a plate shape with front and back surfaces facing in the front-back direction. The plate 13 includes a head plate 13a located on the head side H of the support frame 12. The head plate 13a is fixed to the end of the longitudinal member 42 on the head side H.

As shown in fig. 4 and 5, the driving mechanism 14 is attached to the support frame 12. The drive mechanism 14 is provided in plurality. The plurality of driving mechanisms 14 are disposed below the bed 11. The drive mechanism 14 moves at least a part of the bed 11 and the support frame 12. The drive mechanism 14 is a linear movement actuator that extends and contracts in the front-rear direction.

The drive mechanism 14 includes: a first drive mechanism 14a for rotating the back floor 21; and a second drive mechanism 14b that rotates the leg bottom plate 23. Both ends of the first drive mechanism 14a in the front-rear direction are attached to the main body frame 31 and the back upper link 44, respectively. The back upper link 44 supports the back floor 21 from below. When the first drive mechanism 14a is operated, the back upper link 44 rotates to raise the back of the back floor 21.

Both ends in the front-rear direction of the second drive mechanism 14b are attached to the main body frame 31 and the lap link 45, respectively. The lap link 45 supports the leg bottom plate 23 from below. When the second driving mechanism 14b is operated, the lap link 45 rotates to bring the leg bottom plate 23 into the leg-up state.

In the present embodiment, as shown in fig. 1, a mattress displacement preventing member 15 is attached to the bed 11, and the mattress displacement preventing member 15 restricts a horizontal displacement of a mattress, not shown, placed on the bed 11. Hereinafter, the head side H in the front-rear direction may be referred to as the front side, and the foot side F in the front-rear direction may be referred to as the rear side.

The mattress misalignment preventing members 15 are installed at the corners of the rear end of the bed 11, respectively. The mattress misalignment preventing member 15 includes: a long-side regulating section 51 that extends in the left-right direction and regulates displacement of the mattress in the front-rear direction in the horizontal direction; and a short-side regulating portion 52 that extends in the front-rear direction, and that regulates displacement of the mattress in the horizontal direction in the left-right direction.

As shown in fig. 9, the long-side regulating portion 51 and the short-side regulating portion 52 are connected to each other and have an L shape in a plan view. That is, the relative position between the long-side restriction portion 51 and the short-side restriction portion 52 is fixed. In the illustrated example, the long-side regulating portion 51 has a larger size in the left-right direction than the short-side regulating portion 52 in the front-rear direction.

The long-side regulating portion 51 and the short-side regulating portion 52 are integrally formed of a synthetic resin material. The connection portion 53 between the long-side regulating portion 51 and the short-side regulating portion 52 is formed in a curved surface shape protruding toward the outside of the bed device 10. The long-side restriction portion 51 and the short-side restriction portion 52 may be formed integrally of a metal material or another material.

The long-side restriction portion 51 includes: a first side wall 51a extending in the left-right direction and in the up-down direction, the front and back surfaces of the first side wall 51a facing in the front-back direction; and a first bottom wall portion 51b extending forward from a lower end edge of the first side wall portion 51 a. The first side wall 51a extends forward gradually as it goes upward. The rear end portion of the first bottom wall 51b is formed in a curved surface shape protruding rearward.

In the first bottom wall portion 51b, a first attachment piece 51c extending forward is formed at an outer end portion on the opposite side to the connection portion 53 side in the left-right direction. Hereinafter, the connection portion 53 side is referred to as an outer side, and the first mounting piece 51c side is referred to as an inner side in the lateral direction.

The first mounting piece 51c extends downward as it goes forward.

The long-side regulating portion 51 is integrally provided with a first attaching portion 51d, and the first attaching portion 51d is fitted to a first fitting portion 11a provided in the bed 11. The first mounting portion 51d extends in the left-right direction, and is C-shaped when viewed from the left-right direction, and the first mounting portion 51d is formed in a concave shape that opens toward the rear. The upper end of the first mounting portion 51d is connected to the front end edge of the first mounting piece 51 c.

The short-side restriction portion 52 includes: a second side wall portion 52a extending in the front-rear direction and in the up-down direction, the front and back surfaces of the second side wall portion 52a facing in the left-right direction; and a second bottom wall portion 52b, the second bottom wall portion 52b extending inward in the left-right direction from a lower end edge of the second side wall portion 52 a.

The second side wall portion 52a gradually extends inward in the left-right direction as it goes upward. The second bottom wall 52b is formed in a curved surface shape protruding outward in the lateral direction at the lateral outer end.

The short-side regulating portion 52 is integrally provided with a second attaching portion 52d, and the second attaching portion 52d is fitted to a second fitting portion 11b provided in the bed 11. The second mounting portion 52d protrudes downward from the lower surface of the second bottom wall portion 52b, and is formed in a convex shape extending in the front-rear direction. A fitting portion 52e protruding inward in the left-right direction is formed at the lower end portion of the second mounting portion 52 d.

The fitting portion 52e is disposed across the second mounting portion 52d except for both end portions in the front-rear direction. The second mounting portion 52d is disposed at an inner end portion in the left-right direction of the second bottom wall portion 52 b. In addition, the second attachment portion 52d is disposed inside the outer peripheral edge of the second bottom wall portion 52b in plan view.

The connection portion 53 includes: a connecting wall portion 53a, the connecting wall portion 53a connecting the first side wall portion 51a and the second side wall portion 52a to each other; and a connecting bottom wall portion 53b, the connecting bottom wall portion 53b connecting the first bottom wall portion 51b and the second bottom wall portion 52b to each other. The connecting wall portion 53a and the connecting bottom wall portion 53b are each formed in a curved surface shape protruding toward the outside of the bed device 10 at a portion located outside the bed device 10. The relative position between the long-side restriction portion 51 and the short-side restriction portion 52 is fixed by the connecting wall portion 53a and the connecting bottom wall portion 53 b.

Here, the foot bottom plate 25 of the bed 11 is formed with a plurality of ventilation holes 11c penetrating the foot bottom plate 25 in the up-down direction along the left-right direction. The first fitting-receiving portion 11a is formed on the inner peripheral surface of the vent hole 11 c. In the illustrated example, the first fitting-receiving portion 11a is formed at the lower end of the inner peripheral surface of the vent hole 11 c. The inner peripheral surface of the vent hole 11c is inclined such that the inner diameter of the vent hole 11c gradually increases from below to above. The first fitting-receiving portion 11a is formed in a convex shape protruding forward, and extends in the left-right direction.

The vertical dimension of the first fitting target portion 11a is smaller than the vertical opening width of the first mounting portion 51 d.

The second fitting portions 11b are formed on bottom plate edge portions 25b made of synthetic resin, and the bottom plate edge portions 25b are respectively disposed at both ends in the left-right direction of the foot bottom plate 25 of the bed 11. The second fitting-receiving portion 11b is formed in a concave shape that opens upward on the upper surface of the bottom plate edge portion 25b, and is an elongated hole that extends in the front-rear direction.

In the present embodiment, the first fitting-receiving portion 11a is fitted in the first mounting portion 51d, the second mounting portion 52d is fitted in the second fitting-receiving portion 11b, and the fitting direction between the first mounting portion 51d and the first fitting-receiving portion 11a and the fitting direction between the second mounting portion 52d and the second fitting-receiving portion 11b are different from each other. Further, without being limited to this manner, the first mounting portion 51d may be formed in a concave shape that opens in one direction, and the second mounting portion 52d may be formed in a convex shape that protrudes in one direction.

In the present embodiment, each of the back floor 21, the waist floor 22, and the leg floor 23 includes: a main body part located at the center in the left-right direction; and a bottom plate edge part located at the end part of the main body part in the left-right direction. The first fitting-receiving portion 11a is formed in the body portion 25a of the leg bottom plate 25 in the leg bottom plate 23, and the second fitting-receiving portion 11b is formed in the bottom edge portion 25b of the leg bottom plate 25 in the leg bottom plate 23.

Next, a procedure of attaching the mattress displacement preventer 15 to the bed 11 will be described.

First, as shown in fig. 9, the mattress displacement preventer 15 is disposed above the corner portion of the rear end portion of the bed 11. Next, the mattress displacement preventer 15 is moved downward to insert the second attachment portion 52d of the short-side regulating portion 52 into the second fitting target portion 11 b.

At this time, in order to insert the first attachment portion 51d into the venthole 11c, the mattress displacement preventer 15 is moved downward while the long-side restriction portion 51 is rotated forward about the connection portion 53 and elastically deformed.

Then, the second bottom wall portion 52b is brought into contact with the bottom plate edge portion 25b, the long-side regulating portion 51 is restored and deformed toward the rear, and the first fitting target portion 11a is fitted into the opening of the first mounting portion 51 d.

As described above, according to the mattress misalignment preventer 15 of the present embodiment, the relative positions of the long-side restrictions 51 and the short-side restrictions 52 are fixed. Therefore, the external force from the mattress in any one of the front-back direction and the left-right direction is not received by only one of the long-side limitation unit 51 and the short-side limitation unit 52, and the other of the long-side limitation unit 51 and the short-side limitation unit 52 can receive the external force. Therefore, even when the external force transmitted from the mattress is large, the external force can be reliably received by the mattress displacement preventer 15. This can reliably restrict the horizontal displacement of the mattress with respect to the bed 11.

In addition, the relative position between the long-side restriction portion 51 and the short-side restriction portion 52 is fixed. Therefore, for example, by attaching the mattress displacement preventer 15 to a corner portion of the mattress placement portion of the bed 11, displacement of the mattress in both the front-rear direction and the left-right direction with respect to the bed 11 can be effectively restricted by one mattress displacement preventer 15, and the number of components can be reduced.

The long-side regulating portion 51 and the short-side regulating portion 52 are formed integrally. Therefore, it is not necessary to provide a member for connecting the long side restriction portion 51 and the short side restriction portion 52 to each other, and the mattress misalignment preventer 15 can be firmly formed with a simple structure.

Further, since both the long-side restriction portion 51 and the short-side restriction portion 52 are attached to the bed 11 via the first attachment portion 51d and the second attachment portion 52d, the mattress displacement preventer 15 can be firmly attached to the bed 11, compared to a structure in which only one of the long-side restriction portion 51 and the short-side restriction portion 52 is attached to the bed 11.

Further, since the bed 11 is provided with the first fitting-receiving portion 11a and the second fitting-receiving portion 11b into which the first mounting portion 51d and the second mounting portion 52d are fitted, respectively, the mattress displacement preventer 15 can be easily mounted on the bed 11.

Further, the direction in which the first mounting portion 51d is fitted to the first fitting-receiving portion 11a and the direction in which the second mounting portion 52d is fitted to the second fitting-receiving portion 11b are different from each other. Therefore, the orientation in which the first attachment portion 51d is removed from the first fitting-subject portion 11a and the orientation in which the second attachment portion 52d is removed from the second fitting-subject portion 11b are different from each other. Therefore, even if an external force is accidentally applied to the mattress displacement preventer 15, the engagement between the first attachment portion 51d and the first fitting target portion 11a and the engagement between the second attachment portion 52d and the second fitting target portion 11b can be prevented from being simultaneously released.

In addition, according to the bed device 10 of the present embodiment, since the mattress displacement preventing member 15 is included, the bed device 10 can achieve the above-described various operational effects.

The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

For example, in the above embodiment, the following configuration is shown: the long-side restriction portion 51 and the short-side restriction portion 52 are formed integrally, but the present invention is not limited to this form. The long-side regulating portion and the short-side regulating portion may be formed separately from each other and connected by a connecting member that connects the long-side regulating portion and the short-side regulating portion to each other.

In the above embodiment, the following configuration is shown: the long-side regulating portion 51 is provided with a first attachment portion 51d to be attached to the bed 11, and the short-side regulating portion 52 is provided with a second attachment portion 52d to be attached to the bed 11. Only one of the first and second attachment portions may be provided.

In the above embodiment, the following configuration is shown: the first attachment portion 51d and the second attachment portion 52d are fitted to the first fitting-receiving portion 11a and the second fitting-receiving portion 11b, but the present invention is not limited to this. The first and second mounting portions may be engaged with a part of the bed, not with the first and second fitting portions.

In the above embodiment, the following configuration is shown: the fitting direction between the first mounting portion 51d and the first fitting-subject portion 11a and the fitting direction between the second mounting portion 52d and the second fitting-subject portion 11b are different from each other, but not limited to this manner. The fitting direction between the first mounting portion and the first fitting target portion and the fitting direction between the second mounting portion and the second fitting target portion may be the same direction.

In addition, the components in the above embodiments may be replaced with well-known components as appropriate without departing from the scope of the present invention, and the above modifications may be combined as appropriate.

Industrial applicability

Description of the symbols

10 bed device

11 bed

11a first fitting part

11b second fitting part

15 mattress dislocation preventing part

51 Long side restriction part

51d first mounting part

52 short side limiting part

52d second mounting part

Claims

1. A mattress dislocation prevention member that restricts the displacement of a mattress on a bed, characterized by comprising:

a long-side regulating section that regulates displacement of the mattress in a long-side direction of the bed; and

a short-side regulating section for regulating the displacement of the mattress in the short-side direction of the bed,

the first side wall portion of the long-side regulating portion protrudes in the longitudinal direction toward the side of the long-side regulating portion where the mattress is disposed, as it faces upward,

the second side wall portion of the short-side regulating portion protrudes in the short-side direction toward the side of the short-side regulating portion where the mattress is disposed, as it faces upward,

the long side regulating portion and the short side regulating portion are formed integrally,

the long-side regulating portion further includes a first bottom wall portion extending forward from a lower end edge of the first side wall portion, the short-side regulating portion further includes a second bottom wall portion extending inward in the left-right direction from a lower end edge of the second side wall portion,

wherein an outer end portion in the longitudinal direction of the first bottom wall portion is formed in a curved surface shape protruding outward in the longitudinal direction, and an outer end portion in the short-side direction of the second bottom wall portion is formed in a curved surface shape protruding outward in the short-side direction,

a connecting portion of the long-side restriction portion and the short-side restriction portion includes a connecting wall portion that connects the first side wall portion and the second side wall portion to each other, and a connecting bottom wall portion that connects the first bottom wall portion and the second bottom wall portion to each other,

the connecting wall portion and the connecting bottom wall portion are formed in curved surfaces protruding outward of the bed.

2. The mattress dislocation prevention element as defined in claim 1,

the long-side regulating portion has a length in the short-side direction that is longer than a length in the long-side direction of the short-side regulating portion.

3. The mattress dislocation prevention element according to claim 1 or 2,

a first mounting part is provided on the long-side restricting part, the first mounting part being mounted on the bed,

the short side limiting part is provided with a second mounting part which is mounted on the bed.

4. A bed apparatus, comprising:

the mattress dislocation preventing member of claim 1 or 2; and

the bed.

5. The bed arrangement of claim 4,

6. The bed arrangement of claim 5,

the bed is provided with a first fitting-receiving portion into which the first mounting portion is fitted, and a second fitting-receiving portion into which the second mounting portion is fitted.

7. The bed arrangement of claim 6,

the fitting direction between the first mounting portion and the first fitted portion and the fitting direction between the second mounting portion and the second fitted portion are different from each other.