JP2007181581A - Housing type handle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the effective utilization of a space below a lift body while making an operation handle rotate stably. <P>SOLUTION: A turning rod 17 directed longitudinally at a crank-like operation handle 15 is slidably fitted axially while being unrotatable relatively onto the front end part of a drive rod 13 which is disposed so as to be directed longitudinally below a liftable top board 7 while being linked to a lift mechanism for lifting or lowering the top board 7. The operation handle 15 is made movable between an operable position on the front of the top board 7 and a housing position of being housed below the top board 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a retractable handle device for operating a lifting body such as a table top or a bed floor.

The handle for raising and lowering the lifting body such as the table top as described above has a crank shape and is provided so as to protrude from the front end surface of the lifting body so that it can be easily rotated. Is. For this reason, various structures have been proposed that can be folded and stored so that they do not get in the way when the handle is not operated (see, for example, Patent Documents 1 to 3).
Japanese Utility Model Publication No.57-54427 Japanese Utility Model Publication No. 58-193916 Japanese Utility Model Publication No. 60-86141

  In the folding retractable handle described in the above patent document, a crank-shaped handle and a drive rod (rotating shaft) rotated by the handle are connected by a pin orthogonal to the axis, and the handle is centered on this pin. By rotating the handle, the handle can be folded downward, so that when the handle is rotated to raise or lower the top plate or the like, the handle is wobbled around the pin connection portion, and the handle is stably rotated. There are times when you can't.

  In addition, when folding or setting to the use position, it is necessary to rotate the handle largely around the pin.Therefore, a marginal space for rotating and folding the handle is provided below the top plate or near the handle. There is also a problem that the space below the top plate or the like cannot be used effectively.

  The present invention has been made in view of the above problems, and by making the handle a retractable type that is not foldable, the handle can be stably rotated, and the space below the elevating body such as the top plate is provided. It is an object of the present invention to provide a retractable handle device that can be used effectively.

According to the present invention, the above problem is solved as follows.
(1) Rotating in the front-rear direction of a crank-shaped operation handle at the front end of a drive rod that is disposed below the elevator body and faces the front-rear direction and that is linked to the elevator mechanism that raises and lowers the elevator body An operating position in which the operation handle can be operated in front of the elevating body and a retracted position that is also stored below the elevating body by fitting the scissors so as to be relatively unrotatable and slidable in the axial direction. Be able to move between.

(2) In the above item (1), stopper means for restricting the maximum range of movement of the operation handle in the front-rear direction is provided on the rotary rod and the lower surface of the lifting body.

(3) In the above item (2), the stopper means is configured so that the stopper member fixed to the outer peripheral surface of the rear end of the rotating rod and the stopper member are slidably supported. And a support member attached to the lower surface of the front lifting body. When the operation handle is moved forward, the front end of the stopper member comes into contact with the rear end of the support member and the operation handle is moved rearward. At this time, the rear end of the pivot arm orthogonal to the pivot rod is brought into contact with the front end of the support member.

(4) In any one of the above items (1) to (3), by restricting the relative movement of the driving rod and the rotating rod in the front-rear direction, the operation handle is moved to the operation position and the storage position, respectively. Locking means for holding is provided.

(5) In the above item (4), the locking means is provided at one end of either the driving rod or the rotating rod so as to be in sliding contact with the other outer peripheral surface, and is inwardly orthogonal to the driving rod. It is assumed that the elastic engaging piece has a locking protrusion and an engaging groove which is provided at two positions on the front and rear sides of the other outer peripheral surface and the locking protrusion can be engaged and disengaged.

(6) In any of the above items (1) to (5), when the rotary arm of the operation handle is moved to the storage position so as to be substantially horizontal on the lower surface of the elevating body, A rotation preventing member that prevents the operation handle from rotating downward is provided by locking the portion.

  According to the first aspect of the present invention, it is possible to store the operation handle downward by simply pushing the operation handle backward, so that the connecting portion such as a pin is centered during the rotation operation as in the conventional folding storage type. As a result, there is no fear that the operation handle will wobble, and this can be rotated stably.

  Further, since the operation handle can be horizontally stored along the lower surface of the lifting body, the space below the lifting body can be used effectively.

  According to the second aspect of the present invention, the operation handle is prevented from being detached from the drive rod, and even if the operation handle is inadvertently pushed backward, the operation handle is not moved backward more than necessary from the storage position.

  According to the third aspect of the present invention, the support member that is attached to the lower surface of the elevating body and supports the rotating rod also serves as a part of the stopper means, and the rotating rod is provided with one stopper member. Therefore, the number of parts of the stopper means is minimized, and the operation handle can be reliably stopped at the front-rear limit position.

According to the fourth aspect of the invention, since the operation handle is held at a fixed position between the operation position and the storage position, even if an external force is applied to the operation handle, there is no fear that the operation handle moves in the forward and backward directions.
Further, since the operation handle does not move in the front-rear direction at the operation position, it can be smoothly rotated.

  According to the fifth aspect of the present invention, simply by moving the operation handle in the front-rear direction, the locking protrusions of the elastic engagement pieces are automatically elastically engaged with the engagement grooves at the two front and rear positions, and the operation handle is moved. The elastic engagement piece can be easily held in the operation position and the retracted position, and the elastic engagement piece is elastically deformed outward by strongly pushing and pulling the operation handle in the front-rear direction. Since it separates from the mating groove, it is not necessary to provide a locking means having a complicated structure.

  According to the sixth aspect of the present invention, the pivot arm of the operation handle is securely held in a substantially horizontal state during storage, so that a large space is secured below the elevator and pivots downward. It doesn't do, so it looks better.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a table with an elevating top board provided with a retractable handle device according to the present invention. This table (1) is composed of a pair of left and right legs (2) that are L-shaped in a front view and thereafter. Connects the movable pedestal (3) fitted up and down in the hollow fixed pedestal (2a) facing the up-down direction of the end and the opposing surfaces at the upper rear end of the left and right fixed pedestals (2a) The horizontal connecting plate (4), the top plate support rod (5) whose rear end is fixed to the upper ends of the left and right movable pedestals (3), and the rear end of the top plate support rod (5). There is a reed (6) connecting the faces.
A top plate (7) as an elevating body is attached to the upper surfaces of the left and right top plate support rods (5) and the horizontal rods (6).

  A bracket (8) is attached to the right front surface of the reed (6) and the upper surface of the forward horizontal piece (8a) is composed of, for example, a driving bevel gear and a pair of left and right driven bevel gears. A gear box (9) in which driving force transmission means (both not shown) is accommodated is fixed.

  There are a pair of left and right support pieces (10) and (10) connected to the bracket (8), and a plurality of support pieces (11) facing the front and fixed to the front surface of the reed (6). The hexagonal shaft-shaped interlocking rods (12) and (12) facing left and right are rotatably supported.

  The inner end of both interlocking rods (12) is connected to the gear box (9), and the outer end is also an elevating mechanism (which is housed in the internal space of the fixed leg (2a) and the movable leg (3)). (Not shown).

  The rear end of a hexagonal shaft-shaped drive rod (13) facing in the front-rear direction is connected to the front portion of the gear box (9), and the crank-shaped operation handle (14 ) Etc. are connected to the retractable handle device (15) of the present invention.

  When the operating handle (14) is rotated to rotate the driving rod (13), the left and right interlocking rods (12) and (12) and the lifting mechanism linked to the left and right interlocking rods (12) and 12 are moved by the driving force transmitting means in the gear box (9). It is operated synchronously and the top plate (7) is moved up and down.

Next, the retractable handle device (15) will be described in detail.
As shown in FIGS. 2 to 7, the operation handle (14) has a non-circular cross section inside, for example, a hexagonal cross section fitting hole (16) that complements the outer shape of the drive rod (13). Rotating rod (17) facing the direction, rotating arm (18) with one end fixed at right angle to the front end by welding etc., and the other end rotated by screw (19) and stepped bush (20) It is formed in a crank shape by a handle (21) facing forward and freely attached, and the front end of the rotary rod (17) and the rotary arm (18) are made of a synthetic resin with a U-shaped cross-section that opens at the rear. It is covered with a cover member (22).

  The entire operation handle (14) can be moved in the front-rear direction by slidably fitting the fitting hole (16) of the rotating rod (17) to the drive rod (13). .

  The rear end portion of the rotating rod (17) is slidably held back and forth by a support member (23) made of a synthetic resin screwed to the lower surface of the top plate (7).

  When the operating handle (14) is moved to the rear storage position with the rotating arm (18) horizontal, as shown by a two-dot chain line in FIGS. 2 and 3, on the upper front end of the support member (23), Anti-rotation pieces (24) and (24) protruding into the U-shaped space of the cover member (22) and locking the lower surface of the upper piece (22a) from below are projected forward. Thereby, the turning arm (18) is held so as to be substantially horizontal, and the operation handle (14) is prevented from turning downward.

  A synthetic resin stopper member (25) for restricting the maximum amount of forward movement of the operation handle (14) is provided at the rear end portion of the rotary rod (17) adjacent to the rear end of the support member (23). As shown in FIG. 6 in an enlarged manner, a countersunk screw (28) inserted from a mounting hole (27) of a projecting part (26a) projecting from the cylindrical base part (26) is provided on the rotary rod (17). By being screwed into the female screw hole (29) orthogonal to the axis, it is fixed so that it cannot rotate relative to the front and back.

  At the rear end of the cylindrical base portion (26), a generally cylindrical small-diameter cylindrical portion (31) having a hexagonal fitting hole (30) inside is protruded rearward, and the fitting hole (30) The drive rod (13) is slidably fitted to the housing.

  A pair of elastic engagement pieces (32) and (32) are integrally connected to the small diameter cylindrical portion (31) so as to be opposed to each other by separating the two opposing portions in the axial direction with the required width. (See FIG. 7). An inward locking projection (32a) perpendicular to the drive shaft (13) is provided at the rear ends of the both elastic engagement pieces (32) so as to face each other, and both the locking projections (32a) Can be engaged with and disengaged from two annular engagement grooves (33) and (33) provided on the outer peripheral surface of the drive rod (13).

  That is, as shown in FIGS. 2 to 4, the locking projection (32 a) of the elastic engagement piece (32) in the stopper member (25) is the engagement groove (33) in the front portion of the drive rod (13). In the engaged state, the forward / backward movement of the operation handle (14) is restricted, and the rotating arm (18) and the cover member (22) and the handle (21) fixed thereto are arranged on the top plate (7). Stops at an operation position that protrudes forward from the front end. Accordingly, by rotating the operation handle (14) in this state, the top plate (7) can be raised and lowered. In this state, when the operation handle (14) is pulled forward, the front end of the stopper member (25) comes into contact with the rear end of the support member (23), so that the operation handle (14) does not come off.

  On the other hand, when the operation handle (14) is not operated, the cover member (22) fixed to the rotating arm (18) faces the outer side (or the inner side) so as to be almost horizontal, so that the operation handle ( Rotate 14) in either direction, and then push backward strongly. Then, the elastic engagement piece (32) in the stopper member (25) is elastically deformed outward, and the locking projection (32a) is detached from the engagement groove (33) at the front portion, thereby the operation handle. (14) moves backward along the drive rod (13).

  When the locking projection (32a) of the elastic engagement piece (32) in the stopper member (25) reaches the engagement groove (33) at the rear of the drive rod (13), 2 in FIGS. As shown in the dotted line and FIG. 5, the locking projection (32a) automatically enters the engagement groove (33) and engages. As a result, the back and forth movement of the operation handle (14) is restricted and stored below the top plate (7).

  Even if the operation handle (14) is pressed backward in this state, the rear end of the cover member (22) abuts the front end of the support member (23), so that it does not move further back.

  Further, at this time, the base end portion of the cover member (22) opened rearward is fitted to the rotation prevention piece (24) protruding from the front end of the support member (23), and the cover member (22) Since the lower surface of the upper piece (22a) is locked by the upper surface of the rotation prevention piece (24), the operation handle (14) is prevented from turning downward and held horizontally (FIGS. 2 and 2). 3).

As described above, in the retractable handle device of the above-described embodiment, the rotary rod (17) facing the front-rear direction of the operation handle (14) is slid relative to the drive rod (13) in a relatively non-rotatable manner. Since the operation handle (14) can be moved back and forth between the use position and the storage position by being movably fitted, it can be operated during the rotation operation as in the conventional folding storage system. There is no wobbling of the operation handle (14) around the connecting part such as a pin.
Therefore, the operation handle (14) can be stably rotated.

  Further, the operation handle (14) can be stored along the lower surface of the top plate (7) with its rotating arm (18) horizontal, so that the top plate (as in the conventional folding storage system) It is not necessary to secure a margin space for rotating and folding the operation handle (14) below 7), and the space below the top plate (7) can be used effectively.

The present invention is not limited to the above embodiment.
In the above embodiment, the rotating rod (17) of the operation handle (14) has a cylindrical shape and is externally fitted to the solid driving rod (13). On the contrary, the driving rod (13) is cylindrical. As a shape, a solid turning rod (17) may be fitted therein.

  At this time, a stopper member similar to the above is attached to the front end portion of the drive rod (13), and a locking projection of an elastic engagement piece facing the front is provided on the outer peripheral surface of the rotating rod (17). It is only necessary that the front and rear engagement grooves can be engaged and disengaged.

  Further, in the above embodiment, the rotation preventing piece (24) for horizontally holding the rotation arm (18) of the operation handle (14) in the retracted position is provided on the support member (23) of the rotation rod (17). However, a rotation prevention piece, for example, L-shaped in side view, is separately provided on the lower surface of the top plate (7), and this rotation prevention piece allows the rotation arm (18), that is, the intermediate portion of the cover member (22). The inner surface or the lower surface may be locked.

  The elastic engagement piece (32) may be provided at the front end portion of the rotary rod (17) separately from the stopper member (25).

  The front end of the drive rod (13) fitted to the rotary rod (17) can be brought into contact with the rear surface of the rotary arm (18) to regulate the maximum rearward movement amount of the operation handle (14). Sometimes.

  Needless to say, the present invention can be applied to a handle device for raising and lowering the bed floor and other lifting bodies in addition to the table with the lifting table.

It is a top view of a table with a raising / lowering top plate provided with the retractable handle apparatus of this invention. FIG. 2 is an enlarged plan view of the vicinity of the handle device in FIG. 1. It is the III-III line vertical side view of FIG. FIG. 4 is a cross-sectional plan view taken along the line IV-IV in FIG. 3. Similarly, it is a cross-sectional plan view when the operation handle is moved to the storage position. FIG. 5 is an enlarged cross-sectional plan view of a stopper member mounting portion in FIG. 4. It is the VII-VII line vertical rear view of FIG.

Explanation of symbols

(1) Table
(2) Leg
(2a) Fixed pedestal
(3) Movable pedestal
(4) Horizontal connecting plate
(5) Top plate support rod
(6) Yokohama
(7) Top plate (elevating body)
(8) Bracket
(9) Gearbox
(10) (11) Support piece
(12) Linkage
(13) Driving rod
(14) Operation handle
(15) Retractable handle device
(16) Mating hole
(17) Rotating rod
(18) Rotating arm
(19) Screw
(20) Stepped bush
(21) Handle
(22) Cover member
(22a) Upper piece
(23) Support member
(24) Rotation prevention piece (rotation prevention member)
(25) Stopper member
(26) Cylindrical base
(26a) Projection
(27) Mounting hole
(28) Countersunk screw
(29) Female thread hole
(30) Mating hole
(31) Small diameter cylinder
(32) Elastic engagement piece
(32a) Locking protrusion
(33) Engagement groove

Claims (6)

  At the front end of the drive rod disposed below the elevator body and facing the front-rear direction and linked to the elevator mechanism that raises and lowers the elevator body, a rotating rod that faces the front-rear direction of the operation handle having a crank shape, By fitting the control handle so that it cannot be rotated relative to the shaft and is slidable in the axial direction, the control handle is moved between a control position where the control handle can be operated in front of the lift body and a retracted position stored under the lift body. A retractable handle device characterized by being movable.   The retractable handle device according to claim 1, wherein stopper means for restricting a maximum range of movement of the operation handle in the front-rear direction is provided on the rotary rod and the lower surface of the lifting body.   The stopper means is attached to the lower surface of the lifting body in front of the stopper member so that the stopper member fixed to the outer peripheral surface of the rear end portion of the rotating rod and the rotating rod can be slidably supported. When the operation handle is moved forward, the front end of the stopper member comes into contact with the rear end of the support member, and when the operation handle is moved backward, the rotation is perpendicular to the rotating rod. The retractable handle device according to claim 2, wherein the rear end of the moving arm is in contact with the front end of the support member.   4. A locking means for holding the operation handle at the operation position and the storage position by restricting the relative movement of the drive rod and the rotation rod in the front-rear direction is provided. A retractable handle device according to claim 1.   An elastic engagement having a locking means provided at one end of either the driving rod or the rotating rod so as to be in sliding contact with the other outer peripheral surface and having an inward locking projection perpendicular to the driving rod. 5. The retractable handle device according to claim 4, wherein the retractable handle device is composed of one piece and two engaging grooves that are provided at two positions on the front and rear sides of the other outer peripheral surface, and the engaging projections are engageable and disengageable. When the rotating arm of the operating handle is moved to the retracted position so as to be substantially horizontal on the lower surface of the lifting body, a downward rotation of the operating handle is prevented by locking a part of the rotating arm. The retractable handle device according to any one of claims 1 to 5, further comprising a rotation preventing member.

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