CN220572095U

CN220572095U - Rotary connecting structure of booster

Info

Publication number: CN220572095U
Application number: CN202321965373.3U
Authority: CN
Inventors: 庄子怜子
Original assignee: Nagar Industrial Co ltd
Current assignee: Nagar Industrial Co ltd
Priority date: 2022-07-26
Filing date: 2023-07-25
Publication date: 2024-03-12
Anticipated expiration: 2033-07-25
Also published as: JP2024016457A

Abstract

The utility model provides a rotation connecting structure of a booster, which can lock a rotating component forming the booster at a prescribed rotation position and prevent the rotating component from shaking. For example, the front arm (30) as the second member is rotatable between a use position and an escape position with respect to the side frame (20) as the first member disposed in the vicinity of the toilet bowl (1). The connecting member (33) of the front arm (30) is rotatably held with respect to a connecting bracket (100) fixed to the side frame (20). The rotation of the front arm (30) is locked in, for example, an escape position by a swing lever (110) swingably held to the coupling bracket (100). The pressing member (120) is pressed against the outer peripheral surface of the connecting member (33) by a first screw member (121) screwed with the connecting bracket (100), thereby preventing the connecting member (33) from rocking relative to the connecting bracket (100).

Description

Rotary connecting structure of booster

Technical Field

The present utility model relates to a rotation connection structure of a booster.

Background

Patent document 1 discloses a booster device in which a person to be boosted, such as an obstacle or an elderly person, is seated on a sitting toilet (western-style toilet). In patent document 1, the front arm portion 30 as the second member is held rotatably in the up-down direction with respect to the side frame portion 20 as the first member via the coupling bracket 100. The front arm 30 can selectively take a use position, which is located in front of the assisted user, which is fixed to or detachable from the toilet, and prevents the assisted user from falling forward, and an escape position, which extends in the up-down direction and escapes from the front of the assisted user, according to the rotation thereof.

Patent document 1 also discloses a lock mechanism 90 provided at the retracted position to lock the rotation of the front arm 30. The locking mechanism comprises: a locking groove 33a formed on the outer peripheral surface of the rotation part of the front arm 30; and a swinging lever 110 swingably held to the connection bracket 100. The locking portion 110a formed at one end portion thereof is engaged with or disengaged from the locking groove 33a according to the swing of the swing lever 110. When the front arm portion 30 is located at the retracted position, the locking portion 110a is engaged with the locking groove 33a, thereby restricting (locking) the front arm portion 30 from rotating toward the use position. The swing lever 110 is biased in a direction in which the locking portion 11a is engaged with the locking groove 33a by a spring 112 constituted by a leaf spring.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2020-199141

Disclosure of Invention

Problems to be solved by the utility model

In the structure described in patent document 1, the coupling bracket 100, the (rotational part of the) front arm portion 30, and the swing lever 110 are manufactured, for example, from aluminum profiles, respectively, within a predetermined dimensional tolerance, and then assembled. However, since a small gap is inevitably generated between the front arm portion 30 and the coupling bracket after assembly, the front arm portion 30 is subject to rattling even if only a small external force is applied to the front arm portion 30. Since the rattling occurs even when the front arm portion 30 is in the locked state, there is a possibility that the person to be assisted, the booster, or the like may feel uncomfortable feeling of incomplete locking although in the locked state.

The present utility model has been made in view of the above circumstances, and a first object thereof is to provide a rotation coupling structure of a booster, which can ensure proper rotation of a power-assisting rotation member and prevent rattling thereof. A second object of the present utility model is to provide a booster having the above-described rotation coupling structure.

Means for solving the problems

In order to achieve the first object described above, the following solution is adopted in the present utility model. That is to say,

a rotation connection structure of a booster is provided in the vicinity of a seat on which a booster is seated, and is characterized by comprising:

a connecting bracket having a fixing portion and a rotation holding portion;

a first member fixed to a fixing portion of the connection bracket;

a second member having a booster portion and rotatably held by the rotation holding portion of the coupling bracket, the second member being capable of selectively obtaining a use position in which a booster seated on the seat portion is boosted by the booster portion and a retracted position rotated by a predetermined angle from the use position;

a pressing member that is held by the coupling bracket and is capable of abutting against an outer peripheral surface of a rotation portion held by the rotation holding portion in the second member; and

and a first screw member screwed to a part of the coupling bracket, the first screw member being configured to press the pressing member against an outer peripheral surface of the rotating portion.

According to the above-described solution, the backlash caused by the dimensional tolerance between the rotational holding portion of the coupling bracket and the rotational portion of the second member can be eliminated by using a large force such as the screw force applied by the first screw member. Thus, the second member can be prevented from being unnecessarily shaken. Since the thread force of the first screw member can be finely adjusted, it is possible to simultaneously satisfy the prevention of the above-described rattling and the assurance of the smooth rotation of the second member in a high dimension.

A preferred mode based on the above-described solution is as follows.

A reaction force transmission mechanism for transmitting a reaction force acting from the rotation portion to the pressing member to the coupling bracket may be provided between the pressing member and the coupling bracket. In this case, the reaction force acting on the pressing member from the rotational portion of the second member is received by the coupling bracket via the reaction force transmission mechanism, and the reaction force can be prevented from acting on the first screw member in a concentrated manner. This makes it possible to maintain a predetermined screw force of the first screw member for a long period of time.

The pressing member may be provided with: a connection part swingably connected to the connection bracket; and a first extension portion having an abutting portion extending from the connecting portion and abutting against an outer peripheral surface of the rotating portion,

the first threaded member is located at the first extension. In this case, a specific structure of the pressing member and a specific positional relationship of the pressing member and the first screw member may be provided.

The reaction force transmission mechanism may be provided with: a second extending portion formed on the pressing member and extending from the coupling portion so as to be separated from the abutting portion; and a strut member extending between the second extension portion and the connection bracket. In this case, the reaction force can be effectively transmitted from the pillar member to the connecting bracket via the second extension portion located at a position separated from the abutting portion.

The reaction force transmission mechanism may be provided with: a second extending portion formed on the pressing member and extending from the coupling portion so as to be separated from the abutting portion; and an elastic member interposed between the second extending portion and the connecting bracket. In this case, it is preferable to simply and inexpensively construct the reaction force transmission mechanism. In addition, it is also preferable in that some dimensional errors are absorbed by the elastic member so that the reaction force transmission can be performed reliably.

A second screw member for applying a force to the pressing member in a direction opposite to a pressing direction applied to the pressing member by the first screw member may be provided. In this case, the second screw member can be used to firmly prevent the first screw member from loosening (locking), and the predetermined screw force of the first screw member, which is initially set, can be maintained for a long period of time.

The pressing member may be disposed in the rotation holding portion and may extend along the rotation portion of the second member,

the tip end portion of the first screw member presses the pressing member toward the outer peripheral surface of the rotation portion. In this case, the pressing member can be made to have a simple structure.

A block member through which the first screw member is screwed is loosely inserted into a part of the coupling bracket,

a third screw member for applying a force to the block member in a direction opposite to a pressing direction applied to the pressing member by the first screw member is provided. In this case, the third screw member firmly fixes the block member, so that the predetermined pressing force of the first screw member, which is initially set, can be maintained for a long period of time.

The present utility model may further include a lock mechanism for locking rotation of the second member between the use position and the retracted position in advance at least one of the use position and the retracted position. In this case, by locking the second member in advance, the second member can be prevented from being accidentally rotated between the use position and the escape position. Further, since the first screw member prevents the second member from being moved, the second member does not move when the second member is locked, and therefore, it is preferable to prevent the second member from being erroneously not locked even though it is locked.

The coupling bracket may have the locking mechanism. In this case, the pressing member can be compactly disposed in the vicinity of the lock mechanism.

The locking mechanism can be provided with: a first locking portion formed on an outer peripheral surface of a portion of the second member held by the rotation holding portion; and an operating member which is held by the coupling bracket and is manually operated,

the operating member has a second locking portion which is engaged with or disengaged from the first locking portion in a locking position in which rotation of the second member should be locked,

in the lock position, the engagement of the second locking portion with the first locking portion is released by operating the operating portion, so that the second member can be rotated between the use position and the escape position,

a through hole extending in the longitudinal direction of the rotation holding portion is formed in the circumferential direction of the rotation holding portion at a position where the first locking portion is located in the lock position,

the operating member and the pressing member are disposed in series in a longitudinal direction of the rotation holding portion,

the second locking portion penetrates the through hole at the locking position and is locked with the first locking portion,

the pressing member is pressed against the outer peripheral surface of the rotation portion in a state of penetrating the through hole.

In order to achieve the second object, the booster according to the present utility model includes the rotation coupling structure.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present utility model, a rotation coupling structure that ensures proper rotation of a rotating member and prevents rattling of the rotating member can be provided. Further, a booster having the above-described rotation coupling structure can be provided.

Drawings

Fig. 1 is a perspective view showing an embodiment of the present utility model, in which a pair of left and right front arm portions as a second member are each in a use position.

Fig. 2 is a perspective view corresponding to fig. 1, showing a state in which the pair of left and right front arm portions are in the retracted position, respectively.

Fig. 3 is a side view of the assist device shown in fig. 1, showing a state in which a person to be assisted seated on the toilet is supported.

Fig. 4 is a perspective view showing a portion of the connecting bracket located on the right side in a state where a part of the cover member covering the pressing member is cut away.

Fig. 5 is a perspective view showing a portion of the connecting bracket located on the left side in a state where the cover member covering the pressing member is depicted by a two-dot chain line.

Fig. 6 is a perspective view showing a main portion of the front arm portion related to the lock mechanism.

Fig. 7 is a view showing a state in which the front arm portion in the retracted position is locked, and is a cross-sectional view of a portion corresponding to an arrow X7 in fig. 5, as viewed from the front side.

Fig. 8 is a view showing a state in which the lock of the front arm portion in the use position is released, and is a cross-sectional view corresponding to fig. 7.

Fig. 9 is a diagram showing the relationship among the front arm portion, the pressing member, the support member as the reaction force transmission mechanism, and the coupling bracket when the front arm portion is located at the retracted position, and is a cross-sectional view of a portion indicated by an arrow X9 in fig. 4 when viewed from the rear side.

Fig. 10 is a view showing a cross section of the front arm in the use position, and is a cross section corresponding to fig. 9.

Fig. 11 is a diagram showing a relationship among the front arm portion, the pressing member, the second screw member, and the coupling bracket when the front arm portion is in the retracted position, and is a cross-sectional view of a portion indicated by an arrow X11 in fig. 4 when viewed from the rear side.

Fig. 12 is a view showing a second embodiment of the present utility model, and is a cross-sectional view corresponding to fig. 9.

Fig. 13 is a view showing a third embodiment of the present utility model, and is a cross-sectional view corresponding to fig. 9.

Fig. 14 is a view showing a fourth embodiment of the present utility model, and is a cross-sectional view corresponding to fig. 9.

Fig. 15 is a view showing a fifth embodiment of the present utility model, and is a perspective view of a connecting bracket portion.

Fig. 16 is a cross-sectional view of the portion indicated by arrow X16 in fig. 15 when viewed from the rear side.

Fig. 17 is a cross-sectional view of the portion indicated by arrow X17 in fig. 15 when viewed from the rear side.

In the figure:

p: a person to be assisted; k: a booster device; 1: a sitting type toilet; 10: a base member; 20: a side frame part (first member); 30: a front arm (second member); 31: a rotating part; 32: a main body portion; 33: a connecting member; 3a: a locking groove (first locking portion); 90: a locking mechanism; 100: a connecting bracket; 101: a first tube portion (rotation holding portion); 101c: a through hole; 101e: screw holes (for first screw members); 102: a second tube portion (fixing portion); 110: a swing lever (swing member); 110a: a locking part; 110b: an operation unit; 112: a spring; 120: a pressing member; 120a: a connecting part; 120b: a first extension setting portion; 120c: a second extension portion (reaction force transmission mechanism); 120d: an abutting portion; 120e: mounting holes (for first screw members); 120f: screw holes (for second screw members); 120g: screw holes (for third screw members); 120h: a locking hole (for the cover member); 120i: a locking portion (for the cover member); 120j: a housing recess (for the first screw member, fig. 12 and 13); 121: a first threaded member; 121a: a head; 122: a pillar member; 123: a second threaded member; 124: a cover member; 130: an elastic member (reaction force transmission mechanism-fig. 12); 140: an elastic member (reaction force transmission mechanism-fig. 13); 150: a pressing member (fig. 15 to 17); 151: block members (fig. 15 to 17); 151a: a screw hole (for a first screw member in fig. 16); 151b: a screw hole (for a third screw member in fig. 17); 161: a first screw member (fig. 15 to 17); 162: a third screw member (fig. 15 to 17).

Detailed Description

Fig. 1 to 3 show an example of a booster K according to the present utility model. In fig. 3, a state in which the booster K is disposed in relation to the toilet bowl 1 is shown, and a booster seated in the toilet bowl 1 is denoted by a symbol P.

The booster K generally includes a base member 10, a pair of right and left side frame portions 20 as a first member, a pair of right and left front arm portions 30 as a second member, and a rear frame portion 40. The booster K has a rotation coupling structure for rotatably coupling the side frame 20 and the front arm 30 via the coupling bracket 100.

The base member 10 has a pair of left and right vertical rod members 11 extending in the up-down direction, a horizontal rod member 12 extending in the left-right direction and connecting upper ends of the pair of left and right vertical rod members 11 to each other, and a mounting plate portion 13 connected to a lower end of the vertical rod member 11, and is formed in a gate shape as a whole. The rear part of the toilet bowl 1 is disposed in a space below the horizontal bar-shaped member 12 between the pair of right and left vertical bar-shaped members 11. The base member 10 is a floor type that is not affected by the structure of the sitting type toilet 1 (flush valve, low level tank). The base member 10 may be disposed near the seat toilet 1, and may be fixed to the seat toilet 1 or fixed to the floor.

The side frame portions 20 are provided in a pair on the left and right sides, and are formed by bending a pipe. The pipe material described below is composed of, for example, a core material made of metal such as SUS and a coating material made of synthetic resin, but is not limited thereto. Each side frame portion 20 generally has an upper frame portion 21 extending in the front-rear direction, and a lower frame portion 22 extending temporarily downward from the front end of the upper frame portion 21 and then rearward. The rear end portion of the lower frame portion 22 is attached to the vertical rod member 11 via a swing link mechanism 50 so as to be swingable in the up-down direction as will be described later.

The rear end portions of the upper frame portions 21 of the left and right pair of side frame portions 20 are connected to each other by a rear frame portion 40 extending in the left-right direction in a horizontal state. In the embodiment, the side frame portion 20 and the rear frame portion 40 are integrally formed of the same pipe material. The left and right pair of side frame portions 20 are connected by the rear frame portion 40, whereby the rigidity as a whole is improved, and by swinging one side frame portion 20, the other side frame portion 20 swings in conjunction therewith.

The swing link mechanism 50 includes a link bracket 51 fixed to the vertical rod-like member 11 of the base member 10. The side frame portion 20 (rear end portion of the lower frame portion 22) is connected to the connection bracket 51 by a connection portion 52 so as to be swingable in the up-down direction. The coupling portion 52 may be formed by a suitable method such as a threaded coupling pin and a nut screwed with the coupling pin.

A swing angle changing mechanism for changing the side frame portion 20 is provided. The swing angle changing mechanism has the same structure as the swing angle changing mechanism described in patent document 1, and therefore, the description thereof is omitted.

Next, a relationship between the side frame portion 20 and the front arm portion 30 will be described. First, the front arm portion 30 is formed into a substantially L-shape by bending a pipe material. That is, the front arm portion 30 includes a rotation portion 31 along the upper frame portion 21 of the side frame portion 20, and a main body portion 32 extending from the rotation portion 31 by bending by substantially 90 degrees. As will be described later, the main body 32 serves as a booster that prevents the person P to be boosted, who sits on the toilet bowl 1, from falling forward when the front arm 30 is in the use position. The front arm portion 30 is provided to each of the left and right side frame portions 20.

The rotating portion 31 is rotatably attached to the upper frame portion 21. Thus, the front arm portion 30 can be selectively positioned at the use position (position shown in fig. 1) where the main body portion 32 extends in the horizontal direction, and at the escape position (position shown in fig. 2) where the tip end portion thereof faces upward. The front arm portion 30 can be locked in its swing at the retracted position by a lock mechanism 90 described later.

The buffer members 80 are attached to the pair of left and right rotating portions 31 and the main body portion 32, respectively. When the front arm portion 30 is in the use position, the cushion member 80 is positioned in front of and laterally to the assisted person P seated on the toilet bowl 1. Thus, when the assisted person P is about to fall forward or sideways, the upper body of the assisted person P is flexibly received by the front arm portion 30 and the side frame portion 20 via the cushioning member 80.

Next, the attachment of the front arm portion 30 to the side frame portion 20 will be described with reference to fig. 4 to 8, focusing on the lock mechanism 90 for locking the front arm portion 30 in advance in at least one of the use position and the retracted position. In the embodiment, the avoidance position is a locked position where locking is performed, and the use position is an unlocked position where unlocking is performed. The lock mechanism 90 is identical to the lock mechanism 90 described in patent document 1, and therefore, an outline thereof will be described.

First, the rear end portion of the rotating portion 31 of the front arm portion 30 is constituted by a shaft-like coupling member 33 (see fig. 6). The connecting member 33 is formed by, for example, extrusion molding of an aluminum alloy, and is fixed to the rotating portion 31 made of a pipe material by a fixing member 34 such as a bolt.

The cross-sectional shape of the connecting member 33 is shown in fig. 7 and 8. The coupling member 33 has a shape having a locking groove 33a as a first locking portion and a first stopper portion 33b and a second stopper portion 33c each formed of a locking step portion, as shown in a cross-sectional shape thereof.

The (rotation part 31 of the) front arm part 30 and the (upper frame part 21 of the) side frame part 20 are connected by a connecting bracket 100. That is, the connection bracket 100 includes: a first tubular portion 101 as a rotation holding portion, which rotatably engages with the rotation portion 31 of the front arm portion 30; and a second tube 102 as a fixing portion, which fits the upper frame 21 of the side frame 20.

The coupling bracket 100 is formed in two divided structures, i.e., a first member 100A and a second member 100B, at a portion of the second tubular portion 102. The two-part first part 100A and the second part 100B are fastened by bolts 103 and nuts 104 penetrating the upper frame part 21. The upper frame portion 21 and the coupling bracket 100 are integrated by bolts 103 and nuts 104.

A concave portion 101d having an inner peripheral surface with an arc-shaped cross section is formed between the first tube portion 101 and the second tube portion 102 in the connecting bracket 100. The recess 101d is formed in a slit shape extending over the entire length of the first cylinder 101 in the axial direction. A swing lever 110 as an operation member is swingably attached to the first cylinder portion 101 via a pin member 111. At the position of the pin member 111, a coupling portion 110c as a convex portion formed on the outer peripheral surface of the swing lever 110 having an arc-shaped cross section in the middle portion thereof is rotatably fitted in the concave portion 101d.

An engagement portion 110a, which is a protruding second engagement portion, is formed at one end of the swing lever 110. The locking portion 110a is capable of being fitted (locked) into the locking groove 33a of the coupling member 33 in a state of penetrating the through hole 101c formed in the first tubular portion 101. The engagement portion 110a is engaged with the engagement groove 33a, and is locked in a state in which the swing of the front arm portion 30 is restricted (the state of fig. 7). The swing lever 110 is biased by a spring 112 as a biasing means in a direction in which the locking portion 110a is fitted into the locking groove 33 a. In the embodiment, the spring 112 is constituted by a leaf spring, and is interposed between the swing lever 110 and the coupling bracket 100.

The swing lever 110 has an operation portion 110b that is manually operated. By operating the operation portion 110b clockwise in fig. 7 from the locked state shown in fig. 7, the engagement of the locking portion 110a with the locking groove 33a is released (lock release), and the front arm portion 30 can be swung to the use position shown in fig. 8.

In the embodiment, the through hole 101c formed in the first tubular portion 101 is in the form of a slit extending over the entire axial length of the first tubular portion 101, but the present utility model is not limited thereto. Specifically, the through hole 101c may have a shape in which at least one end portion in the longitudinal direction (the axial direction of the connecting member 33) is closed (may have a shape in which both end portions are closed, or may have a shape in which only one end portion is closed).

A first stepped portion 101a and a second stepped portion 101b are formed on the inner surface of the first tubular portion 101 of the coupling bracket 100 at circumferentially spaced intervals, the first stepped portion being constituted by an engagement stepped portion. As shown in fig. 7, when the front arm 30 is rotated from the use position toward the retracted position and is in the retracted position, the first stopper 33b of the coupling member 33 abuts against the first step 101a, and the front arm 30 is restricted from further rotating beyond the retracted position.

When the front arm 30 is rotated from the retracted position toward the use position to be in the use position, as shown in fig. 8, the second stopper portion 33c of the coupling member 33 abuts against the second step portion 101b, and the front arm 30 is restricted from further rotating beyond the use position.

In order to change the front arm portion 30 in the lock position shown in fig. 7 from the retracted position to the use position, the operation portion 110b of the swing lever 110 is operated to disengage the engagement portion 110a from the engagement groove 33a of the coupling member 33.

The coupling bracket 100, the swing lever 110, and the coupling member 33 in the front arm portion 30 are formed by extrusion molding of a metal material such as aluminum alloy, for example. Since the respective members of the coupling bracket 100, the swing lever 110, and the coupling member 33 have dimensional tolerances in terms of manufacturing, the coupling member 33 is fitted to the first cylindrical portion 101 of the coupling bracket 100 in a state of being slightly tilted. Further, the engagement of the engagement portion 110a of the swing lever 110 with the engagement groove 33a of the coupling member 33 also generates some rattling. Therefore, even when the front arm portion 30 is in the locked state at the retracted position, a lot of rattling occurs.

Due to the rocking of the coupling member 33 in the first cylinder 101, even if the booster P or its booster contacts the tip end portion (upper portion) of the front arm portion 30 in a state locked at the retracted position with a relatively small force, a large moment acts on the coupling member 33 serving as a turning portion, and the front arm portion 30 largely swings.

The spring 112 in the lock mechanism 90 functions as a force in a direction to reduce the above-described rattle. However, since a large moment acts on the coupling member 33 due to an external force acting on the distal end portion of the front arm portion 30, the urging force of the spring 112 is actually too small compared to the large moment, and the front arm portion 30 cannot be prevented from rattling.

In the present utility model, the pressing member and the first screw member are provided separately to prevent the connecting member 33 from rattling in the first cylinder 101. Hereinafter, a structure for preventing the rattling will be described with reference to fig. 4, 5, and 9 to 11.

First, the pressing member 120 is held by the connection bracket 100. The pressing member 120 is disposed adjacent (in series with) the swing lever 110 in the axial direction of the first cylinder 101.

The pressing member 120 has a coupling portion 120a as a convex portion in its middle portion, and has an outer peripheral surface with an arc-shaped cross section. The connecting portion 120a is fitted into the recess 101d of the first tube 101, and the pressing member 120 swings around the connecting portion 120 a. The pressing member 120 is formed of an aluminum alloy in the embodiment, but may be formed of other metals or synthetic resins.

The pressing member 120 has a first extending portion 120b extending from the connecting portion 120a to one side and a second extending portion 120c extending to the other side. The tip end portion of the first extension portion 120b serves as an abutment portion 120d penetrating the through hole 101c formed in the first tubular portion 101. The contact portion 120d contacts the outer peripheral surface of the coupling member 33, which is a rotation portion of the front arm portion 30. The contact surface of the contact portion 120d, which contacts the outer peripheral surface of the coupling member 33, is formed as a curved surface so as to have the same radius of curvature as that of the outer peripheral surface of the coupling member 33, and is set so that the contact area with respect to the outer peripheral surface of the coupling member 33 increases.

The first extension portion 120b is formed with a mounting hole 120e through which (the shaft portion of) the first screw member 121 passes. A screw hole 101e is formed in the first tubular portion 101 at a position facing the mounting hole 120e. The first screw member 121 is screwed into the screw hole 101e in a state of penetrating the mounting hole 120e. By this screwing, the large-diameter head 121a of the first screw member 121 presses the first extension portion 120b, and the contact portion 120d of the pressing member 120 strongly presses the outer peripheral surface of the coupling member 33.

By the screw force of the first screw member 121, (the abutting portion 120d of) the pressing member 120 is strongly pressed against the outer peripheral surface of the coupling member 33, whereby the coupling member 33 is prevented from rocking relative to (the first cylindrical portion 101 of) the coupling bracket 100. The magnitude of the screw force of the first screw member 121 is adjusted so as to satisfy the above-described range of both the shake prevention and the smooth rotation of the front arm portion 30 (the coupling member 33) with respect to the first cylinder portion 101. The screw force of the first screw member 121 can be finely adjusted, and therefore the above-described shake prevention and smooth rotation of the front arm portion 30 can be simultaneously satisfied in a high dimension.

The second extending portion 120c of the pressing member 120 is provided with a pillar member 122. The second extension portion 120c and the stay member 122 function as reaction force transmission means for transmitting reaction force acting from the coupling member 33 serving as a turning portion to the pressing member 120 to the coupling bracket 100. In the present embodiment, the stay member 122 is formed of a screw member (fixing screw) extending parallel to the bolt 103. That is, a screw hole 120f is formed in the second extension portion 120c, and the stay member 122 is screwed into the screw hole 120 f. The front end of the strut member 122 abuts against the upper surface of (the first tube 101 of) the connection bracket 100.

The reaction force from the coupling member 33 acts on the pressing member 120 that presses the coupling member 33 through the first screw member 121. The reaction force is firmly received by the connecting bracket 100 through the strut members 122. This prevents the reaction force from concentrating on the first screw member 121. In particular, the reaction force acts on the column member 122 in the axial direction, and even the bolt 103 having high rigidity and being parallel to the column member 122 can be firmly received.

As shown in fig. 11, in the pressing member 120, a screw hole 120g is formed in the first extension portion 120 b. A second screw member 123 is screwed into the screw hole 120g. The second screw member 123 is provided at a position separated from the first screw member 121 in the axial direction of the first cylinder 101. The second screw member 123 is a headless fixed screw in the embodiment, and the tip thereof abuts the outer peripheral surface of the first cylinder 101.

The thread force of the second screw member 123 is a force in a direction to separate the head 121a of the first screw member 121 from the first cylinder 101. That is, the screw force of the second screw member 123 is a force in a direction opposite to the direction in which the pressing member 120 is pressed by the first screw member 121, and the first screw member 121 is prevented from loosening (locking action of the second screw member 123 on the first screw member 121). By the anti-loosening function of the second screw member 123, the screw force of the first screw member 121 is maintained for a long period of time as an initial preferable set value.

The first screw members 121 are provided in two at an interval in the axial direction of the first tube 101, and the second screw member 123 is provided only one between the two first screw members 121. The number of the first screw members 121 and the second screw members 123 is not particularly limited.

The pressing member 120 is entirely covered with the cover member 124 so as not to be visible from the outside. The cover member 124 is formed of, for example, synthetic resin, and is detachably attached to the pressing member 120. That is, as shown in fig. 11, the convex engaging portion 124a provided on the inner surface side of the cover member 124 engages with the hole-shaped engaging portion 120h formed in (the second extending portion of) the pressing member 120. Further, a claw-shaped engaging portion 124b formed at an end of the cover member 124 is engaged with an engaging portion 120i formed at the pressing member 120. The cover member 124 may be attached to the connection bracket 100, and an appropriate method such as using a fastener may be used for the attachment method.

The swing lever 110 and the pressing member 120, which are disposed in series, are restricted from displacement in the axial direction of the first cylinder 101 by stopper members (not shown) provided at the axial end portions of the first cylinder 101.

In particular, if the connecting bracket 100 is formed of a soft material such as aluminum or synthetic resin, the female screw of the screw hole 101e is easily damaged, but by forming the structure such that the rotational connecting structure has a reaction force transmission mechanism as in the present embodiment, a predetermined screw force of the first screw member 121 can be maintained for a long period of time.

Fig. 12 shows a second embodiment of the present utility model, and components identical to those of the above embodiment are denoted by the same reference numerals, and overlapping description thereof is omitted (the same applies to the following still other embodiments). In the present embodiment, the tip end portion of the bolt 103 that fixes the coupling bracket 100 to the side frame portion 20 also functions as a strut member that extends between the second extension portion 120c and the coupling bracket 100. The distal end portion of the bolt 103 is covered with a cap-shaped elastic member 130 made of, for example, hard rubber. The elastic member 130 is interposed between the bolt 103 and the second extension portion 120c of the pressing member 120, but the elastic member 130 may be omitted when the second extension portion 120c can directly abut against the bolt 103. In the present embodiment, the reaction force acting on the pressing member 120 can be reliably received by the bolt 103 having high rigidity from the axial direction thereof. In addition, the reaction force transmission mechanism is simple in structure and can be provided at low cost.

In the embodiment of fig. 12, the pressing member 120 is further configured to have a receiving recess 120j for receiving the head 121a of the first screw member 121, but not to have the cover member 124.

Fig. 13 shows a third embodiment of the present utility model, which is a modification of fig. 12. In the present embodiment, the elastic member 140 as the reaction force transmission mechanism is preferably provided at the distal end portion of the second extension portion 120c of the pressing member 120, which is farthest from the contact portion 120d that becomes the input portion of the reaction force from the connecting member 33, in order to effectively receive the reaction force.

Fig. 14 shows a fourth embodiment of the present utility model. In the present embodiment, since the embodiment of fig. 9 to 11 is a modification, the pressing member 120 has a structure without the second extending portion 120c. The reaction force transmission mechanism is not provided.

Fig. 15 to 17 show a fifth embodiment of the present utility model. In the present embodiment, the lock mechanism 90 is provided at another position separate from the coupling bracket 100, and therefore, the structure related to the lock mechanism 90 is not shown.

In the present embodiment, a receiving groove portion 101f extending over the entire length in the axial direction is formed in the inner surface of the first tube portion 101 in the coupling bracket 100. A plate-like pressing member 150 extending over substantially the entire length of the first cylinder 101 in the axial direction is disposed in the storage groove 101f. The pressing member 150 is preferably formed of a metal such as an aluminum alloy in view of durability and the like, but may be formed of a synthetic resin.

The first tube portion 101 has a receiving hole 101g extending over the entire length in the axial direction in parallel with the receiving groove portion 101f. A block member 151 is disposed in the accommodation hole 101g.

In the first tubular portion 101, through holes 101h and 101i are formed at a position on the opposite side of the pressing member 150 from the block member 151 with a gap therebetween in the axial direction. In the embodiment, there are two through holes 101h, and there is one through hole 101i. The through-holes 101i are located between two adjacent through-holes 101 h. Each of the through holes 101h and 101i faces the block member 151.

A through hole 101j for communicating the storage groove 101f with the storage hole 101g is formed in the first tubular portion 101 on the same axis as the through hole 101 h.

Screw holes 151a and 151b are formed in the block member 151 at positions corresponding to the through holes 101h and 101i. The screw hole 151a is used for a first screw member 161 inserted into the through hole 101 h. The screw hole 151b is used for the third screw member 162 inserted into the through hole 101i.

As shown in fig. 17, the third screw member 162 inserted into the through hole 101i is screwed into the screw hole 151b. The tip of the third screw member 162 abuts against the inner wall surface of the receiving hole 101g on the receiving groove 101f side. Further, by rotating the third screw member 162 in a predetermined direction, the block member 151 is displaced rightward in fig. 17 by the screw force thereof, but the displacement to the right or more by a predetermined amount is restricted by the inner wall surface of the through hole 101i side in the housing hole 101g. Thus, the block member 151 is fixed at a predetermined position with respect to the coupling bracket 100.

As shown in fig. 16, the first screw member 161 inserted into the through hole 101h is screwed into the screw hole 151a and penetrates therethrough, and the tip thereof abuts against the pressing member 150. When the first screw member 161 is rotated in the direction of screwing with the screw hole 151a (the rotation direction is a rotation in which the block member 151 is displaced rightward in the drawing), the pressing member 150 presses the outer peripheral surface of the coupling member 33 (prevents the coupling member 33 from shaking with respect to the first cylinder 101) by the screw force of the first screw member 161. In particular, if the connecting bracket 100 is formed of a soft material such as aluminum or synthetic resin, the female screw is easily damaged, but by configuring the rotational connecting structure as in the present embodiment, the block member 151 is formed of a harder material such as stainless steel, and thus a predetermined screw force of the first screw member 161 can be maintained for a long period of time.

The direction in which the third screw member 162 presses the block member 151 is a force in a direction opposite to the direction in which the first screw member 161 presses the pressing member 150, and the third screw member 162 is used to prevent loosening with respect to the first screw member 161.

The embodiment has been described above, but the present utility model is not limited to the embodiment, and can be appropriately modified within the scope described in the claims. The front arm portion 30 may be provided only in one side frame portion 20 of the pair of right and left side frame portions 20. The swing angle of the side frame 20 may be changed to be continuously variable, or a fixed setting may be set so that the swing angle of the side frame 20 cannot be changed.

The rotation of the front arm 30 may be locked by the locking mechanism 90 at both the retracted position and the use position, or may be locked only at the use position. The lock mechanism 90 is not limited to the embodiment, and may have an appropriate structure. In the first to fourth embodiments, the lock mechanism 90 is provided to the coupling bracket 100, but the lock mechanism 90 may be provided at another position separate from the coupling bracket 100. In the fifth embodiment, the lock mechanism 90 is provided at another position separate from the coupling bracket 100, but the lock mechanism 90 may be provided at the coupling bracket 100.

The first locking portion may be in the form of a locking step portion instead of the groove form such as the locking groove 33 a. Specifically, in fig. 7 showing the lock position, the locking step portion may be formed only on the inner wall surface on the second stopper portion 33c side of the inner wall surfaces on both sides in the circumferential direction of the locking groove 33 a. The second screw member or the third screw member for preventing the first screw member from being loosened may be an internal screw member (for example, a lock nut in which the second screw member or the third screw member is screwed with the first screw member as the external screw member).

As the second member (corresponding to the front arm portion 30 in the embodiment) serving as the rotating member, any suitable member such as the elbow rest portion described in patent document 1 can be selected as long as the second member is located in the vicinity of the assisted person seated on the seat portion and has a function of assisting the assisted person. Similarly, the first member (corresponding to the side frame 20 in the embodiment) may be appropriately selected as long as it is a member to which the first member is rotatably coupled.

The device having a seat to which the present utility model is applied is not limited to a sitting toilet, and may include, for example, a stationary chair for rest, a stationary chair at an ornamental position, and other suitable devices. The modification described in patent document 1 can also be applied directly. Of course, the object of the present utility model is not limited to what is explicitly described, but also implies providing what is actually preferred or advantageous.

Industrial applicability

The present utility model is suitable for a booster having a rotation coupling structure with a locking function.

Claims

1. A rotation connection structure of a booster is provided in the vicinity of a seat on which a booster is seated, and is characterized by comprising:

a connecting bracket having a fixing portion and a rotation holding portion;

a first member fixed to a fixing portion of the connection bracket;

2. The rotary joint structure of a booster according to claim 1, wherein,

a reaction force transmission mechanism for transmitting a reaction force acting from the rotation portion to the pressing member to the coupling bracket is provided between the pressing member and the coupling bracket.

3. The rotary joint structure of a booster according to claim 2, wherein,

the pressing member has: a connection part swingably connected to the connection bracket; and a first extension portion having an abutting portion extending from the connecting portion and abutting against an outer peripheral surface of the rotating portion,

the first threaded member is located at the first extension.

4. The rotary joint structure of a booster according to claim 3, wherein,

the reaction force transmission mechanism includes: a second extending portion formed on the pressing member and extending from the coupling portion so as to be separated from the abutting portion; and a strut member extending between the second extension portion and the connection bracket.

5. The rotary joint structure of a booster according to claim 3, wherein,

the reaction force transmission mechanism includes: a second extending portion formed on the pressing member and extending from the coupling portion so as to be separated from the abutting portion; and an elastic member interposed between the second extending portion and the connecting bracket.

6. The rotary joint structure of a booster according to any one of claims 1 to 5, wherein,

a second screw member for applying a force to the pressing member in a direction opposite to a pressing direction applied to the pressing member by the first screw member is provided.

7. The rotary joint structure of a booster according to claim 1, wherein,

the pressing member is disposed in the rotation holding portion and extends along the rotation portion of the second member,

the tip end portion of the first screw member presses the pressing member toward the outer peripheral surface of the rotation portion.

8. The rotary joint structure of a booster according to claim 7, wherein,

a third screw member for applying a force to the block member in a direction opposite to a pressing direction applied to the pressing member by the first screw member is provided.

9. The rotary joint structure of a booster according to any one of claims 1 to 5, wherein,

the second member is provided with a locking mechanism for locking rotation of the second member between the use position and the escape position in advance at a position of at least one of the use position and the escape position.

10. An assist device, comprising:

the rotational coupling structure of any one of claims 1, 2, 3, 4, 5, 7, or 8.