WO2016182222A1 - Height-adjustable pillow - Google Patents

Abstract

The present invention provides a height-adjustable pillow comprising: a rotation member which is mounted on a base so as to be rotatable about a vertical shaft; and a lifting operation mechanism which converts the rotational motion of the rotation member into vertical linear motion and transfers same to a lifting panel, thereby lifting the lifting panel with respect to the base.

Description

Telescoping pillow

Embodiment of the present invention relates to a pillow that can vary the height.

The pillow supports the user's head when the user lies down or sleeps and is generally configured to have a constant height and proper cushion.

People sleep in various positions. You may lie down in a straight position, lie on your side, or lie down. If you cut your pillow in the normal posture, your back, cervical spine, and back are roughly straight. Due to the distance difference between one shoulder and one side of the face, the cervical spine is bent and uncomfortable. On the contrary, if you use a relatively high pillow, you may feel relatively comfortable when lying on its side, but when you are lying down, it is difficult to expect a comfortable sleep by lifting your head.

Moreover, most people only roughly estimate the height of the pillow that suits them, but they are not aware of it correctly.

An embodiment of the present invention is to provide a height adjustable pillow adjustable to a height that allows the user to feel comfortable or maintain a correct posture. In addition, an embodiment of the present invention is an object to provide a height adjustment pillow that can accurately recognize the adjusted height to the user.

According to an embodiment of the invention, the lower member; An upper member disposed above the lower member so as to be movable upward and downward; And a lifter configured to adjust the height of the upper member by moving the upper member in a vertical direction, wherein the lifter includes a shaft in a vertical direction on one of the upper member and the lower member (hereinafter, referred to as a first member). At least one rotating member rotatably mounted to a center; Lifting operation mechanism for converting the rotational movement of the rotating member to a linear motion in the vertical direction proportional to the rotation angle of the rotating member to transfer to the other of the upper member and the lower member (hereinafter referred to as the second member) Including, a height adjustable pillow may be provided.

The lifting and lowering mechanism is provided with the rotating member facing the second member and inclined upwardly in a first direction, which is either one of clockwise and counterclockwise, along a circumference around the axis of the rotating member. An elevating guide member having an elevation; It may include a contact member protruding from the second member toward the first member and disposed so that the tip contacts the inclined portion.

The elevating device may further include a reverse rotation preventing mechanism for limiting the rotational direction of the rotating member so that the rotating member is rotated only in the forward direction of raising the upper member. The reverse rotation prevention mechanism may include an internally toothed ratchet which is mounted coaxially with the rotation member and rotates together with the rotation member and rotates only in the forward direction by the action of a pawl. Alternatively, the reverse rotation prevention mechanism may include an externally toothed ratchet mounted coaxially with the rotation member and rotated together with the rotation member and rotated only in the forward direction by the action of a pole.

The elevating induction member is provided on the inclined portion continuously along the longitudinal direction of the inclined portion and has a plurality of locking jaws arranged at different heights, such that the contact member is in contact with any one of the plurality of locking jaws. Can be.

The locking jaw portions are each composed of a stepped surface and a connection surface, and the stepped surfaces are spaced apart from each other by being spaced apart along the longitudinal direction of the inclined portion and are positioned at different heights, and the connection surfaces are of different heights. By forming the inclined surface connecting the stepped surfaces, the contact member may be displaced to another stepped surface along the connection surface when the rotating member is rotated. The stepped surfaces may be inclined downhill in the first direction, which is an uphill inclination forming direction of the inclined portion along a circumference around the axis of the rotating member, respectively.

The elevating device is provided with a single drive rotating member and a plurality of driven rotating members as the rotating member, and transmits a rotational force of the driving rotating member to the driven rotating members to rotate the driven rotating members together. It further includes, the lifting operation mechanism may be provided in plurality to convert the rotational movement of the driven rotary members to a linear movement in the vertical direction in proportion to the rotation angle of the driven rotary members, respectively, and to transmit to the second member. The power transmission mechanism may be a geared, belted or chained transmission.

Height adjusting pillow according to an embodiment of the present invention may further include a height display device for displaying the moving height of the upper member.

On the other hand, the upper member is provided in plurality and are disposed in different positions, respectively, the lifting device may be provided in plurality to achieve the height adjustment for the upper members, respectively.

According to the embodiment of the present invention, since the height of the pillow can be adjusted to a height at which the user can feel comfort or maintain a correct sleeping posture, the user can sleep more comfortably. And, if it is provided in a facility used by multiple people, such as a hospital, a hotel, a condo, the height of the pillow can be adjusted according to the user's preference for each user, thereby greatly improving customer satisfaction.

According to the embodiment of the present invention, since the user can recognize the height of the pillow through the pillow height detection device, the height of the pillow can be easily and accurately adjusted to the user's own desired height.

1 and 2 are a perspective view and a front view showing a height adjustment pillow according to a first embodiment of the present invention.

Figure 3 is an exploded perspective view showing the internal structure of the height adjustment pillow according to the first embodiment of the present invention.

4 is a perspective view showing the lift apparatus shown in FIG.

FIG. 5 is a perspective view illustrating the drive rotation disc and its related configuration shown in FIGS. 3 and 4; FIG.

6 is a perspective view showing a driven rotary disk and its related configuration shown in FIGS.

7 is a perspective view showing the height display device of the height adjustment pillow according to the first embodiment of the present invention.

8 is a perspective view showing a lifting device which is a main part of the height-adjusting pillow according to the second embodiment of the present invention.

9 is an exploded perspective view showing the main part of the height-adjusting pillow according to the third embodiment of the present invention.

FIG. 10 is a perspective view showing the lift apparatus shown in FIG. 9. FIG.

FIG. 11 is a perspective view showing the drive rotary disk and its peripheral configuration shown in FIGS. 9 and 10.

12 is a perspective view showing a lifting device which is a main part of the height adjusting pillow according to the fourth embodiment of the present invention.

FIG. 13 is a configuration diagram showing a part of the lifting device shown in FIG. 12.

14 and 15 are a perspective view and a plan view showing the outside and inside of the height-adjusting pillow according to the fifth embodiment of the present invention, respectively.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Height adjusting pillow according to the first embodiment of the present invention is shown in Figures 1 to 7.

1 to 3, the height adjusting pillow according to the first embodiment of the present invention includes a base 20 as a lower member and a lifting panel 30 as an upper member.

The base 20 has a structure in which at least a portion of the upper portion is open. To this end, the base 20 may be formed to have a structure of a rectangular box in which the top is opened in whole or in part. Specifically, the base 20 may be composed of a flat bottom plate and sidewalls erected along the edge portion of the bottom plate.

The lifting panel 30 is provided on the base 20 so as to be movable in a vertical direction (Z-axis direction) that is vertical. The lifting panel 30 is formed to have an overall flat and flat structure, and may be disposed in the horizontal direction (X-Y axis direction). The lifting panel 30 together with the base 20 constitutes a pillow body.

1 and 2, the upper side of the elevating panel 30 is provided with a cushion 40 for elastically supporting the user's head. Thus, the cushion 40 is disposed above the pillow body (see reference numerals 20 and 30).

As shown in Figures 2 and 3, the height adjustment pillow according to the first embodiment of the present invention, so that the lifting panel 30, the upper member can be accurately moved in the vertical direction with respect to the base 20, the lower member. It further includes a guide means 50 for guiding the lifting movement of the lifting panel 30.

The guide means 50 may include a straight guide pin 52 and a pin insertion member 54 having a guide hole into which the guide pin 52 is slidably moved. The guide pin 52 protrudes downward from the lower portion of the elevating panel 30 along the Z-axis direction, and the pin insertion member 54 has a guide hole 52 at the tip thereof on the bottom plate of the base 20. It may be provided to face in front of. In the guide means 50, the paired guide pin 52 and the pin insertion member 54 may be provided in plurality, the position of the paired guide pin 52 and the pin insertion member 54 are mutually It may change.

3 and 4, the height adjustment pillow according to the first embodiment of the present invention, by moving the upper lifting panel 30 in the vertical direction relative to the base 20 of the lower to the base 20 It further includes a lifting device 100 for adjusting the height (that is, pillow height) of the lifting panel (30). Of course, when the elevating panel 30 is elevated (moved in the up and down direction) by the elevating device 100, the cushion 40 is also moved in the same direction together with the elevating panel 30. The lifting device 100 will be described with reference to FIGS. 5 and 6.

The elevating device 100 includes a plurality of rotating members 112 and 114 formed in a disk shape. Rotating members 112 and 114 are provided with a single drive rotation disk 112 and a plurality of driven rotation disk 114. The plurality of driven rotating disks 114 are formed to have the same diameter. The single drive rotation disk 112 and the plurality of driven rotation disk 114 are rotatably mounted about an axis in the vertical direction on the bottom plate of the base 20 to be accommodated in the inner space of the base 20. Four driven rotary disk 114 may be provided, and may be arranged to form a square structure around the driving rotary disk 112. The number of driven rotating discs 114 provided may be appropriately increased or decreased depending on the implementation conditions. Extremely, only one driven rotating disc 114 may be provided.

As shown in Figure 4, 5, the lifting device 100, when the drive rotation disk 112 is rotated to rotate the driven force of the drive rotation disk 112, so that each driven rotation disk 114 is driven driven disk ( It further comprises a first power transmission mechanism (122, 124) for transmitting to the (114).

The first power transmission mechanisms 122 and 124 are gear type electric mechanisms having a plurality of spur gears. In detail, the first power transmission mechanisms 122 and 124 include a single drive gear 122 and a plurality of driven gears 124 having the same pitch circle diameter.

The drive gear 122 is mounted coaxially with the drive rotation disc 112 and rotates together with the drive rotation disc 112. The driven gears 124 are coaxially mounted to the driven rotational discs 114, respectively, and rotate together with the driven rotational discs 114, respectively, and engage the drive gears 122 in this state. Accordingly, when the drive rotation disk 112 is rotated, the driven rotation disk 114 is rotated by the drive gear 122 and the driven gear 324 meshed with it in the same direction and the same speed. The drive gear 122 and the driven gear 124 may have a configuration that is provided on the outer circumference of the drive rotation disk 112 and the outer circumference of the driven rotation disk 114, respectively.

As shown in Figure 3 and 4, the lifting device 100, the linear motion in the vertical direction in proportion to the rotational movement of at least one driven rotary disk 114 in proportion to the rotational angle of the driven rotary disk 114 And further, the elevating operation mechanism (132, 134) for elevating the elevating panel 30 by transferring to the elevating panel (30). Specifically, the elevating operation mechanisms 132 and 134, the elevating induction member 132 and the elevating panel 30 are provided on the upper portion of the driven rotating disk 114 to rotate in the same direction with the driven rotating disk 114, respectively. It includes a contact member 134 protruding toward the lifting member 132 from the bottom of the).

The elevating guide members 132 each have an inclined portion 132a. Each of the inclined portions 132a is disposed above the elevating induction member 132 and is disposed in one direction along the circumference around the axis of the driven rotating disc 114 which is rotated together with the elevating inducing member 132 (see FIG. As a reference, it is provided to slope uphill in a counterclockwise direction). Accordingly, each inclined portion 132a is formed as an inclined surface.

The contact members 134 are respectively in contact with the inclined portions 132a of the elevating guide members 132 that rotate together with the driven rotary disks 114. The contact members 134 are in contact with different portions of the inclined portion 132a according to the rotation angle of the elevating guide members 132.

3 to 5, the lifting device 100 includes a rotational force of the drive shaft 140 and the drive shaft 140 disposed on the drive rotation disk 112 in a direction crossing the axis of the drive rotation disk 112. It further includes a second power transmission mechanism (152, 154) for transmitting to the drive rotation disk (112).

The drive shaft 140 is disposed in the horizontal direction, preferably in the X-axis direction in the front-rear direction. The drive shaft 140 penetrates one side of the side wall constituting the base 20 to be directly manipulated by a user, and one end thereof is exposed to the outside. Of course, the drive shaft 140 is rotatably mounted about an axis in the horizontal direction, that is, the X-axis direction. An operation handle 145 gripped by a user is mounted at one end exposed to the outside from the drive shaft 140.

The second power transmission mechanisms 152 and 154 are mounted coaxially with the drive shaft 140 at the other end of the drive shaft 140 to be driven with the drive shaft 140 and the drive bevel gear 152 and the drive rotation disk 112. It is a gear-type electric mechanism that is mounted coaxially with the drive rotary disk 112 on the upper side of the rotating rotation with the drive rotary disk 112 and includes a driven bevel gear 154 engaged with the drive bevel gear 152.

As shown in Figures 4 and 6, the lifting device 100 further includes a reverse rotation preventing means 160 for limiting the rotation direction of the driven rotary disk 114 so that the driven rotary disk 114 is rotated only in the forward direction. Include. At this time, the forward rotation direction of the driven rotary disk 114 is the direction in which the driven rotary disk 114 is rotated so that the elevating panel 30 is raised (clockwise, based on Figure 4).

The reverse rotation preventing means 160 includes an internally toothed ratchet 162 and a stopper 164 having a plurality of pawls provided in any one or any two or more driven rotating discs 114. Only one pole may be provided.

The inner tooth ratchet 162 is provided coaxially with the driven rotating disc 114 on the driven rotating disc 114 to be rotated in the same direction with the driven rotating disc 114 and to be moved together with the driven rotating disc 114. It is disposed in the inner region defined by the member 132. A ratchet gear is provided on the inner circumference of the inner tooth ratchet 162. The pawl of the stopper 164 prevents the inner ratchet 162 from rotating backward together with the driven rotation disc 114 by the locking action of the inner ratchet 162 with the ratchet gear.

Referring to FIG. 6, the ratchet gear of the internal ratchet 162 is inclined at a predetermined angle with respect to the radial direction of the internal ratchet 162 such that its tip portion faces the reverse direction, and the forward surface 162a faces the forward direction. It consists of a plurality of gear teeth with a stop surface 162b facing in the direction of rotation.

The stopper 164 is disposed in the inner circumferential space of the inner tooth ratchet 162, and the center is fixed to a dedicated fixed shaft. The center of the stopper 164 is provided with a shaft member fixed to a fixed shaft dedicated to the stopper 164 fixed to the bottom plate of the base 20 through the center (axis) of the driven rotating disk 114 in the vertical direction . The pawl of the stopper 164 is provided on the upper outer periphery of the shaft member provided in the center of the stopper 164. The pawl of the stopper 164 is made of a flexible material, and is formed in an arc shape bent so that its tip faces the forward direction.

The pole of the stopper 164 is maintained in a state where the tip portion is in contact with the stop surface 162b. When the inner ratchet 162 is rotated in the forward direction, the moving surface 162a naturally adjacent to the flexible material and the arc shape is formed. While the inner tooth ratchet 162 is in contact with and bent while allowing forward rotation of the inner tooth ratchet 162, when the inner tooth ratchet 162 is rotated, the bending deformation caused by the engagement with the stop surface 162b is suppressed by the characteristic of the arc shape. Limit the reverse rotation of the ratchet 162.

On the other hand, unlike the description, the pawl of the stopper 164 may be a general ratchet pole.

In the height adjustment pillow according to the first embodiment of the present invention, since the driven rotation discs 114 are rotated only in the forward direction by the action of the reverse rotation preventing means 160, the gear-type electric motor to the driven rotation discs 114 The driving rotation disc 112 which transmits rotational force by the first power transmission mechanisms 122 and 124 is also rotated only in the forward direction. At this time, the forward rotation direction of the drive rotation disk 112 is a direction in which the drive rotation disk 112 is rotated so that the lifting panel 30 rises.

By operating the operation handle 145 to rotate the drive shaft 140, the rotational force of the drive shaft 140 is transmitted to the drive rotation disc 112 by the drive bevel gear 152 and driven bevel gear 154 to drive the rotation disc When the 112 is rotated in the forward direction, the driven rotary disks 114 are rotated in the forward direction by the drive gear 122 and the driven gear 124. In addition, the elevating induction member 132 is rotated in the same direction with the driven rotary disk 114, in this process the contact position of the contact member 134 with respect to the inclined portion 132a of the elevating induction member 132 is As it is uniformly raised, the contact members 134 are raised and the lifting panel 30 is raised.

When the driving rotary disk 112 is continuously rotated in the forward direction, the contact members 134 are in contact with the highest position of the inclined portion 132a and fall to contact the lowest position of the inclined portion 132a.

In the state in which the height of the elevating panel 30 is adjusted, even if an external force (weight of the user's head) is applied to the elevating panel 30 due to the use of the user, the elevating panel 30 prevents reverse rotation 160. The fall is prevented by the action of).

Reference numeral 200 in FIGS. 3 and 7 denotes a height display device that displays the height of the elevating panel 30 in which the height is adjusted by the elevating device 100.

The height display device 200 extends downward from the lower portion of the elevating panel 30 to be positioned within the base 20, and the pinion meshed with the rack 210 and mounted inside the base 20. 220, an operation gear 230 engaged with the pinion 220 and disposed outside the base 20 and disposed outside the base 20 and mounted coaxially with the operation gear 230, and an operation gear 230. And rotated together with the display member 240 having a height display. Although not shown, the indicator may be provided at a portion adjacent to the display member 240 in the base 20, and the indicator may indicate the height indicated by the height display of the display member 240.

In the height display device 200, when the elevating panel 30 is elevated, the rack 210 is elevated together in the same direction, and thus the pinion 220 and the operating gear 230 are rotated and the display member 240 is rotated. As the height is rotated, the height of the elevating panel 30 is displayed. At this time, the user can adjust the height of the elevating panel 30 while visually confirming the height of the elevating panel 30 which is elevated through the height display unit of the display member 240.

Figure 8 shows the lifting device which is the main part of the height adjustment pillow according to the second embodiment of the present invention.

As shown in Figure 8, the height-adjusting pillow according to the second embodiment of the present invention, when compared with the first embodiment of the present invention, all other configurations and actions are the same, externally toothed The only difference is that the reverse rotation prevention means 170 with the ratchet 172 is applied. Looking at this, in the height-adjusting pillow according to the second embodiment of the present invention, the reverse rotation preventing means 170, the outer ratchet 172 and the pole provided in any one or any two or more driven rotary disk 114 With a stopper 174.

The external ratchet 172 is provided coaxially with the driven rotary disk 114 in the driven rotary disk 114 is rotated in the same direction with the driven rotary disk 114. The external ratchet 172 is preferably disposed in the peripheral region of the elevating guide member 132 on the upper side of the driven gear 124 rotated together with the driven rotary disk 114. A ratchet gear is provided on the outer circumference of the outer ratchet 172. The pawl of the stopper 174 prevents the outer ratchet 172 from rotating backward together with the driven rotation disc 114 by the locking action of the outer ratchet 172 with the ratchet gear.

The ratchet gear of the outer ratchet 172 is inclined at a predetermined angle with respect to the radial direction of the outer ratchet 172 so that the tip portion thereof faces in the reverse rotation direction, and the moving surface 172a facing the forward rotation direction and the stop facing the reverse direction. It consists of a plurality of gear teeth having a face 172b.

The stopper 174 is disposed on the outer circumferential side of the outer latch 172 and the base of the pawl is fixed to a dedicated fixed shaft. The base of the pawl is provided with a shaft member fixed to a fixed shaft dedicated to the stopper 174 fixed to the bottom plate of the base 20. The pawl of the stopper 174 is made of a flexible material, and is formed in an arc shape bent so that the tip thereof faces in the forward direction. The pawl of this stopper 174 acts the same as or similar to that of the first embodiment of the present invention while limiting the reverse rotation of the external ratchet 162.

9 to 11 show the main part of the height adjustment pillow according to the third embodiment of the present invention.

9 to 11, the height adjustment pillow according to the third embodiment of the present invention, when compared with the first embodiment of the present invention, the other configuration and operation is the same, the drive shaft (Fig. 4 140) and the operation steering wheel 112-1 instead of the operation handle (see 145 of FIG. 4), and the reverse rotation preventing means 160-1 having the internal ratchet 162-1 is applied. The positions are different from each other. This is as follows.

The height adjustment pillow according to the third embodiment of the present invention is a driving bevel gear 152 because the driving drive disk (112-1) for operation is applied instead of the drive shaft (see 140 of Figure 4) and the operation handle (see 145 of Figure 4). ) And driven bevel gears 154 are excluded. In addition, the intermediate rotation disk 112-2 is provided instead of the driving rotation disk (see 112 of FIG. 5).

As illustrated in FIG. 9, the operation driving rotation disc 112-1 is rotatably mounted about an axis in the vertical direction on the bottom plate of the base 20. An exposure opening 22 is provided at one side of the side wall of the base 20, and the operation driving rotation disc 112-1 is positioned such that a part of the edge side is exposed through the exposure opening 22 of the base 20. Therefore, the user can directly rotate the operation driving rotation disk 112-1 by using the edge portion of the operation driving rotation disk 112-1 exposed to the outside of the base 20 through the exposure opening 22. Can be.

As shown in Figure 10, the height-adjusting pillow according to the third embodiment of the present invention is a jaw for transmitting the rotational force of the operation driving disk (112-1) to at least one of the driven disk (114) It has an actuation drive gear 122-1. The operation drive gear 122-1 is a spur gear. The operation drive gear 122-1 is mounted coaxially with the operation drive rotation disc 112-1 and rotates together with the operation drive rotation disc 112-1.

The driven rotary disc 114 that receives the rotational force from the operation driving rotation disc 112-1 and the operation driving rotation disc 112-1 has an exposed opening (an edge portion of the operation driving rotation disc 112-1). 22) the driving gear 122-1 is exposed to the driving gear 124 coaxially mounted to the driven rotating disk 114, which receives the rotational force from the driving rotating disk 112-1. Is placed.

Intermediate rotation disk 112-2 is provided with a singular or plural number. Reference numeral 122-2 is an idler gear that is coaxially mounted with the intermediate rotating plate 112-2 and rotates together with the intermediate rotating plate 112-2. The intermediate rotary disc 112-2 is an idler gear 122-2 between the driven rotary disc and the remaining driven rotary disc, which are rotated by the rotational force from the driving rotary disc 112-1 among the driven rotary discs 114. ) Is positioned at the position where the driven rotary disk 114 rotates with the rotational force from the operation driving disk 112-1 and the driven gear 124 coaxially mounted to the remaining driven disk. As a result, the rotational force of the driven rotational disc that is rotated by the rotational force from the operation driving rotational plate 112-1 among the driven rotational discs 114 is transmitted to the remaining driven rotational discs.

The operation drive gear 122-1 and the idler gear 122-2 may have a configuration that is provided on the outer periphery of the driving rotation disc 112-1 and the outer periphery of the intermediate rotation disc 112-2, respectively. .

In the height-adjusting pillow according to the third embodiment of the present invention, the driving gear 122-1, the singular or plural idler gears 122-2, and the plurality of driven gears 124 constitute a power transmission mechanism. When the operation drive rotation disc 112-1 is rotated, the driven rotation disc 114 equipped with the driven gear 124 meshed with the operation drive gear 122-1 is rotated together, thereby intermediate The driven disk 114 equipped with the driven disk 124 engaged with the rotating disk 112-2 and the idler gear 122-2 is rotated together.

As shown in FIG. 11, the reverse rotation preventing means 160-1 having the internal ratchet 162-1, in comparison with that of the first embodiment of the present invention, has an intermediate rotation disc 112-2. Only the points to be mounted on the different, and the configuration and operation are all the same or similar, detailed description thereof will be omitted.

Main parts of the height adjusting pillow according to the fourth embodiment of the present invention are shown in FIGS. 12 and 13.

12 and 13, the height adjustment pillow according to the fourth embodiment of the present invention, compared with the first or second embodiment of the present invention, the other configurations and actions are all the same, The first power transmission mechanism (122-3, 124-1, 126) for transmitting the rotational force of the drive rotation disk 112 to the driven rotation disk 114, the reverse rotation preventing means having a ratchet (Fig. 4 160, reference point 170 of FIG. 8) instead of the similarly provided with a locking jaw portion (132b) is different.

In the height-adjusting pillow according to the fourth embodiment of the present invention, the driven rotary disks 114, as in the first or second embodiment of the present invention to form a rectangular structure around the drive rotary disk 112 12, or may be arranged in a rectangular structure such that the drive rotation disk 112 is positioned between the two as shown in FIG.

The first power transmission mechanism (122-3, 124-1, 126) is a belt-type transmission mechanism including pulleys (122-3, 124-1) and the belt 126, the belt 126 is a timing belt (timing belt) ), And thus the pulleys 122-3 and 124-1 may also be pulleys for timing belt transmission. As pulleys 122-3 and 124-1, a single drive pulley 122-3 and a plurality of driven pulleys 124-1 having the same pitch circle diameter are provided.

The driving pulley 122-3 is coaxially mounted with the driving rotation disk 112 at the lower side of the driving rotation disk 112 and rotates in the same direction together with the driving rotation disk 112. The driven pulleys 124-1 are coaxially mounted with the driven rotary disk 114 at the lower sides of the driven rotary disks 114, respectively, and rotated in the same direction together with the driven rotary disks 114. The pulleys 122-3 and 124-1 are flanged pulleys, and the drive rotating disc 112 and the driven rotating disc 114 are the driving pulley 122-3 and the driven pulley 124-1, respectively. It may also be configured to function as one flange (upper flange) of the heads.

The belt 126 is wound around the drive pulley 122-3 and the driven pulley 124-1 so that the rotational force of the drive pulley 122-3 can be transmitted to all of the driven pulleys 124-1.

In FIG. 12, reference numeral 128 denotes an idler used to change the direction of the belt 126 or adjust the tension of the belt 126. The number of the idlers 128 may be appropriately changed depending on the implementation conditions.

Such first power transmission mechanism (122-3, 124-1, 126) is preferably configured so that the rotation direction of the driven pulley (124-1) are all the same.

As shown in Figure 12, the height adjustment pillow according to the fourth embodiment of the present invention is a reverse rotation preventing means having a ratchet of the first or second embodiment of the present invention (160 in Figure 4, 170 in Figure 8 Has removed configuration. 12 and 13, the height adjustment pillow according to the fourth embodiment of the present invention, the locking jaw portion (132b) the inclination portion on the inclined portion (132a) of at least one or more lifting guide member 132 It is provided continuously along the longitudinal direction of 132a. Accordingly, the locking jaw portions 132b are disposed at different heights, and the contact members 134 are latching jaw portions 132b according to the rotation angles of the elevating guide members 132 rotated together with the driven rotation discs 114. The tip is in contact with either of them. To this end, the tip of the contact member 134 is preferably formed to be pointed.

Each locking step 132b is composed of a step surface 132c and a connection surface 132d. The stepped surfaces 132c are disposed at regular intervals (equal intervals) along the longitudinal direction of the inclined portion 132a to be spaced apart from each other and positioned at different heights. The connecting surfaces 132d are formed of inclined surfaces connecting the stepped surfaces 132c having different heights. According to this, the contact members 134 are lifted along the connecting surface 132d connected to the step surface 132c of the current position when the elevating guide member 132 is rotated together with the driven rotary disk 114, the neighboring side in the current step surface It may be in contact with one other step surface.

In order to prevent the contact member 134 from unintentionally lifting up along the connecting surface 132d, the stepped surfaces 132c each have one side along the circumference around the axis of the driven rotating disc 114 located below it. The inclined portion 132a, which is a direction, is provided to be inclined downward in the uphill inclination formation direction (counterclockwise when referring to FIG. 4).

In the above description, the first power transmission mechanism 122-3, 124-1, and 126 is an electric power mechanism using the pulleys 122-3, 124-1 and the belt 126. Reference numerals 122-3, 124-1, and 126 may be powertrains using chains and sprocket wheels.

14 and 15 show the inside and outside of the height adjustment pillow according to the fifth embodiment of the present invention.

As shown in Figure 14 and 15, the height adjustment pillow according to the fifth embodiment of the present invention, compared with the first to fourth embodiments of the present invention, all other configurations and actions are the same On the other hand, the lifting panels 30A, 30B, 30C, and 30D are provided in plural, and the heights are respectively independently (individually) adjusted by the lifting devices 100A, 100B, 100C, and 100D.

The elevating panels 30A, 30B, 30C, and 30D are respectively disposed at different positions on the single base 20.

Referring to Fig. 15, each lifting device 100A, 100B, 100C, 100D has a first power transmission mechanism comprising a drive gear and a driven gear, a drive shaft and an operation handle, and a second power transmission mechanism with a drive bevel. It consists of a gear and a driven bevel gear, and it is shown that the locking jaw portions are provided on the inclined portion of the elevating guide member and the reverse rotation preventing means having the ratchet is excluded. However, the configuration of each of the elevating devices 100A, 100B, 100C, and 100D is not limited thereto, and at least one of the first and fourth embodiments of the present invention may be applied to the elevating devices.

Some of the hoisting devices 300A, 300B, 300C, 300D (see hoisting device 300C) have driven gears driven through idler gears to avoid interference with other hoisting devices. It can be configured to receive.

Claims (12)

1. A lower member; An upper member disposed above the lower member so as to be movable upward and downward; It includes a lifting device for adjusting the height of the upper member by moving the upper member in the vertical direction,

   The elevating device includes: at least one rotating member rotatably mounted to one of the upper member and the lower member (hereinafter, referred to as a first member) about an axis in an up and down direction; Lifting operation mechanism for converting the rotational movement of the rotating member to a linear motion in the vertical direction proportional to the rotation angle of the rotating member to transfer to the other of the upper member and the lower member (hereinafter referred to as the second member) Included,

   Height adjustable pillow.
2. The method according to claim 1,

   The upper member is provided in plurality and are disposed in different positions, respectively,

   The lifting device is provided with a plurality to achieve a height adjustment for each of the upper members,

   Height adjustable pillow.
3. The method according to claim 1,

   The lifting operation mechanism,

   An elevating guide member provided on the rotating member so as to face the second member and having an inclined portion inclined uphill along a circumferential direction about the axis of the rotating member;

   And a contact member protruding from the second member toward the first member and disposed so that the tip contacts the inclined portion.

   Height adjustable pillow.
4. The method according to claim 3,

   The lifting device,

   Further comprising a reverse rotation prevention mechanism for limiting the rotation direction of the rotating member so that the rotating member is rotated only in the forward direction to raise the upper member,

   Height adjustable pillow.
5. The method according to claim 4,

   The reverse rotation prevention mechanism includes an internally toothed ratchet which is mounted coaxially with the rotation member and rotates together with the rotation member and rotates only in the forward direction by the action of a pawl.

   Height adjustable pillow.
6. The method according to claim 4,

   The reverse rotation prevention mechanism includes an externally toothed ratchet mounted coaxially with the rotation member and rotated together with the rotation member and rotated only in the forward direction by the action of a pawl.

   Height adjustable pillow.
7. The method according to claim 3,

   The elevating induction member is provided on the inclined portion continuously along the longitudinal direction of the inclined portion and has a plurality of locking jaws arranged at different heights, such that the contact member is in contact with any one of the plurality of locking jaws. felled,

   Height adjustable pillow.
8. The method according to claim 7,

   The locking jaw portions are each composed of a stepped surface and a connection surface, and the stepped surfaces are spaced apart from each other by being spaced apart along the longitudinal direction of the inclined portion and are positioned at different heights, and the connection surfaces are of different heights. By forming the inclined surface connecting the step surface,

   The contact member is displaced to another stepped surface along the connection surface when the rotating member is rotated,

   Height adjustable pillow.
9. The method according to claim 8,

   The stepped surfaces are each inclined downhill in a direction inclined uphill along the circumferential direction around the axis of the rotating member,

   Height adjustable pillow.
10. The method according to claim 1,

    The lifting device,

    A single drive rotary member and a plurality of driven rotary members are provided as the rotary member,

    Further comprising a power transmission mechanism for transmitting the rotational force of the drive rotary member to the driven rotary members to rotate the driven rotary members together,

    The lifting operation mechanism is provided with a plurality to convert the rotational movement of the driven rotary members to a linear movement in the vertical direction in proportion to the rotation angle of the driven rotary members, respectively, and to transmit to the second member,

    Height adjustable pillow.
11. The method according to claim 10,

    The power transmission mechanism is a gear type, belt type or chain type electric mechanism,

    Height adjustable pillow.
12. The method according to claim 1,

    Further comprising a height display device for displaying the moving height of the upper member,

    Height adjustable pillow.

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