KR101903935B1 - Low Noise and Errorless Mobile Rack Handle - Google Patents

Abstract

The present invention relates to a low noise and errorless mobile rack handle in which the rotation of the handle is controlled without a clutch mechanism or a latch mechanism, thereby reducing operating noise. In addition, since the handle is placed in an original position, the use convenience is provided. A mobile rack handle (10) provided at one side of a mobile rack includes: a driving shaft (15) rotatably mounted on a bearing member (25) of a driving part frame (20) mounted on a mobile rack; a handle body (11) including a handle (11a) provided at one side of the driving part frame (20) to rotate the driving shaft (15) and spaced apart from the rotation center by a predetermined distance; a driving gear (16) having gear grooves (16′) formed on an outer circumferential surface thereof and arranged at a predetermined distance and rotating together with the driving shaft (15); a fixed plate (12) provided at an outer portion of the driving gear (16) and coupled and fixed to the handle body (11); an operating member (13) interposed between the driving gear (16) and the fixed plate (12) and coupled to the driving shaft (15) to be rotatable; and an operating pin (14) mounted on the operating member (13) to be movable and restricting the driving gear (16) to transmit the rotational force of the handle body (11) to the driving shaft (15) through the driving gear (16).

Description

{Low Noise and Errorless Mobile Rack Handle}

More particularly, the present invention relates to a low noise and noiseless mobile rack knob, and more particularly, to a low noise and noiseless mobile rack knob capable of interrupting rotation of a knob without using a clutch mechanism or a ratchet mechanism to reduce operating noise, Mobile rack handle.

The Mobile Rack was developed to improve the problem of fixed bookcases that have limitations in existing storage space. It moves along the lower rail to store a large amount of books or documents in a small space. This is a mobile storage box that allows for the use of This mobile rack makes it possible to store books and documents at a high density, and the storage efficiency is improved by two to three times, so that more books and documents can be stored in the same space. The most efficient data retention can be achieved regardless of whether the data is concentrated or distributed, thereby improving space saving, environmental improvement, office efficiency and economic efficiency

Such a mobile rack is divided into a manual type mobile rack for moving the rack (frame portion) by turning the drive gear using a knob and an electric type mobile rack for moving the frame portion by turning the electric motor by receiving power from the outside, There is an advantage that it is possible to simultaneously move a plurality of frame parts without applying a force by a simple switch operation.

As shown in FIG. 1, the manual type mobile rack described above is provided with a handle for rotating the drive gear on its side, and the drive gear is rotated as the handle is rotated clockwise or counterclockwise, An intermittent mechanism for interrupting the transmission of power between a rotary shaft provided on a driving gear of the mobile rack and the handle in order to prevent accidents caused by the rotation of the handle in accordance with the movement of the mobile rack, So as to prevent the mobile rack from moving.

Here, the speed-reducing mechanism includes a clutch mechanism or a ratchet mechanism that transmits the rotational force of the knob to the rotational shaft only when the knob is rotated clockwise or counterclockwise. The rotational force of the rotational shaft, which rotates in accordance with the movement of the mobile rack, As shown in FIG. In addition, the regulating mechanism operates only when the handle rotates clockwise. When the handle rotates counterclockwise, it does not operate. When the handle rotates counterclockwise, it operates only when the handle rotates clockwise. It consists of a dual structure of non-existent parts.

However, in the above-described conventional low noise and noiseless mobile rack handle, since the disengagement mechanism for interrupting the transmission of the power between the handle and the rotary shaft is constituted by the clutch mechanism or the ratchet mechanism, the operating noise is inevitably generated when the handle is rotated, There is a problem that the manufacturing cost rises.

Meanwhile, as a result of investigation of the prior art related to the present invention, a large number of patent documents have been searched and some of them will be described as follows.

Patent Document 1 discloses a mobile rack having a rail fixed to the ground, a plurality of rollers provided on the upper side of the rail, and a moving table movable by a rotation axis, wherein the moving table has an opening formed at one side thereof, Discloses a mobile rack that facilitates the maintenance of component parts by including an opening in a part thereof and covering the side opening of the moving table and being removable.

Patent Document 2 discloses a mobile rack operated by rotation of a gear member, comprising a control plate having a fastening hole penetrating from the inside to the outside and a cradle protruding from the inner side, and a control plate connected to the cradle, A stopper member for allowing or blocking the stopper member, and a locking device which is fastened to the fastening hole to allow or block the operation of the stopper member, and which simplifies the installation structure of the stopper member and the locking device and improves safety. .

Patent Literature 3 discloses a moving device comprising: a moving part including a wheel for moving on a rail and a moving support frame for receiving a wheel shaft; A driven sprocket portion formed on the wheel shaft for rotatably receiving the electric drive force, or a drive bracket detachably coupled to one side of the movable support frame, and a driven sprocket portion, the mobile rack being disassembled And a drive unit that can be easily upgraded to the electric drive unit without turning over the electric drive unit. The electric drive unit includes a drive bracket coupled to a front surface or a rear surface of the movable support frame; A driving sprocket supported by the driving bracket and rotated by receiving a driving force from the driving motor; A driven sprocket portion provided on the wheel shafts and rotated by receiving a rotational force of the drive sprocket portion; and a chain portion connecting the drive sprocket portion and the driven sprocket portion, wherein the drive bracket and / or the driven sprocket portion And a hybrid drive unit capable of easily connecting the sprocket unit to the chain unit and upgrading to the electric drive unit.

KR 20-0430913 Y1 KR 10-2013-0041594 A KR 10-2015-0043190 A

The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a method and apparatus for minimizing operating noise generated in a process of rotating a handle, The objective is to provide a mobile rack handle.

It is another object of the present invention to provide a low noise and noiseless mobile rack handle capable of preventing a handle from being damaged due to a grasp caused by a knob or a collision with another object by allowing the handle of the handle to always be positioned at a lower position.

According to an aspect of the present invention, there is provided a mobile rack handle provided at one side of a mobile rack, including: a drive shaft rotatably installed on a bearing member of a drive frame provided in a mobile rack; A handle body provided on the outside of the driving unit frame and having a handle at a position spaced from the rotation center by rotating the driving shaft; A drive gear having a gear groove formed on an outer circumferential surface at regular intervals and rotated together with the drive shaft; A fixing plate coupled to the handle body at an outer side of the driving gear; An operating member disposed between the driving gear and the fixed plate and rotatably coupled to the driving shaft; And an operating pin movably installed on the operating member to transmit the rotational force of the handle body through the driving gear to the driving shaft by restraining the driving gear.

In addition, according to the low-sound-level mobile rack handle of the present invention, a guide groove in which both ends of the operation pin are respectively inserted is formed in the receiving portion and the fixing plate of the handle body, and the operation pin is inserted in the longitudinal direction An operating groove is formed and the operating pin is moved along the operating groove by the guide groove to selectively restrict the driving gear when the handle body rotates.

According to the present invention, the guide groove is formed in a V-shape that is symmetrical with respect to the center of the handle, and the angle of the guide groove is 80 to 120 °.

According to another aspect of the present invention, there is provided a low-sound-level mobile rack handle comprising a driving mechanism provided with a drive sprocket and a lock gear integrally formed with the drive shaft, and a locking mechanism for restraining the lock gear to fix the drive shaft .

In addition, according to the low noise-proof mobile rack handle of the present invention, the noise absorbing cover is detachably coupled to the receiving portion of the handle body, and the noise absorbing cover is provided with at least one elastic holding piece.

The low noise and noiseless mobile rack handle of the present invention has the effect that operating noise is greatly reduced because the driving gear is constrained by the operating pin moving along the guide groove without using the one-way clutch or the ratchet structure to rotate the driving shaft.

In addition, according to the low noise and noiseless mobile rack handle of the present invention, due to the shape feature of the guide groove formed in the V shape, even when the knob body is not completely rotated or rotated excessively, the knob body is naturally returned to the initial position, There is an effect that jaggery is prevented and breakage of the handle is prevented.

In addition, according to the low-sound-level mobile rack handle of the present invention, since the lock gear is restrained by using the lock mechanism to prevent the rotation shaft from rotating, the mobile rack can be fixed so as not to move.

According to the present invention, since the noise absorbing cover is provided, the noise due to the movement of the operating pin is cut off, the noise is not diverted to the outside, and the noise absorbing cover is stably There is an effect to be combined.

In addition, according to the present invention, since the noise absorbing cover is detachably installed, it is possible to repair each structure located in the receiving portion of the handle body after the noise absorbing cover is detached, There is an easy effect.

1 is a perspective view of a typical hand-held mobile rack;
FIG. 2 is an external perspective view of a low-sound-impermeable mobile rack handle according to the present invention; FIG.
3 is an exploded perspective view showing a silent mobile rack handle of the present invention.
4 is a cross-sectional view of a low-noise sound mobile rack handle of the present invention.
5 is a disassembled cross-sectional view of a silent mobile rack handle of the present invention.
6 is a view showing an operation process of the low-noise and noiseless mobile rack handle of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a low-noise sound mobile rack handle according to the present invention will be described with reference to the accompanying drawings.

2 to 5, a low rack noise mobile rack handle according to the present invention is a mobile rack handle 10 provided at one side of a mobile rack, and includes a bearing member 25 of a drive frame 20 provided in a mobile rack, A drive shaft 15 rotatably mounted on the drive shaft 15; A handle body 11 provided on the outside of the driving unit frame 20 and having a handle 11a at a position spaced from the rotation center by rotating the driving shaft 15; A drive gear (16) having gear grooves (16 ') formed on its outer peripheral surface at regular intervals and rotating together with the drive shaft (15); A fixing plate (12) coupled to the handle body (11) from the outside of the driving gear (16); An operating member (13) disposed between the driving gear (16) and the fixed plate (12) and rotatably coupled to the driving shaft (15); An operating pin 14 movably installed on the operating member 13 to transmit the rotational force of the handle body 11 to the driving shaft 15 through the driving gear 16 by restraining the driving gear 16, ; And a sound absorbing cover 17 detachably coupled to the receiving portion 11b of the handle body 11 and having at least one elastic retaining piece 17 'along the outer peripheral surface thereof.

As described above, since the rotational force is transmitted by restricting the driving gear 16 using the operating member 13 and the operating pin 14 without using the clutch mechanism or the ratchet mechanism, the operating noise is reduced and the noise absorbing cover 17) absorbs operational noise and thus eliminates noise. Therefore, it becomes easy to use in a place sensitive to noise such as a library.

The sound absorbing cover 17 can be firmly coupled to the handle body 11 by providing the elastic retaining piece 17 'to the sound absorbing cover 17, So that various components located in the receiving portion 11b of the handle body 11 can be serviced or replaced.

At this time, guide grooves 11 'and 12' into which both ends of the operating pin 14 are inserted are formed in the receiving portion 11b of the handle body 11 and the fixing plate 12, Is formed with a longitudinally elongated working groove 13 'into which the operation pin 14 is inserted. Accordingly, when the handle body 11 rotates, the operating pin 14 moves along the operating groove 13 'by the guide grooves 11' and 12 'to selectively rotate the driving gear 16 . When the handle body 11 is not rotated, the operating pin 14 is kept separated from the driving gear 16, so that even when the drive shaft 150 coupled to the driving gear 16 rotates, When the mobile rack is pushed and moved, the handle body 11 is kept in a stopped state without rotating, so that an accident caused by the rotating handle body 11 is prevented.

At this time, the guide grooves 11 'and 12' are formed in a V-shape that is symmetrical with respect to the center of the handle, and the angle is preferably 80 to 120 °. Accordingly, when the operating pin 14 is located at the vertex portion of the guide grooves 11 'and 12', it is positioned at the lower end of the operating groove 13 'and is separated from the driving gear 16 And when the operating pin 14 is positioned at the end of the guide groove 11 'or 12' according to the rotation of the handle body 11, it moves to the upper end of the operating groove 13 ' Is inserted into the gear groove 16 'of the driven gear 16, thereby restricting the drive gear 16. When the handle body rotates less than 360 degrees or rotates more than 360 degrees according to the shape characteristics of the guide grooves 11 'and 12', the weight of the handle body 11 causes the handle body 11 return to the initial position and the operating pin 14 is also separated from the driving gear 16 and returned to the initial position.

The drive sprocket 18 is provided at the inner end of the drive shaft 15 with a drive gear 18 formed integrally with the drive sprocket 18b and the lock gear 18a, (18b) are connected by a chain. Accordingly, the driven sprocket 19 is rotated in accordance with the rotation of the drive shaft 15, thereby moving the mobile rack horizontally. A locking mechanism 30 for locking the driving shaft 15 by restricting the locking gear 18a of the driving unit 18 is provided to prevent horizontal movement of the mobile rack.

4, the lock mechanism 30 includes a stopper pin 32 for restricting rotation of the lock gear 18a by inserting an end portion into the gear groove of the lock gear 18a, A spring 33 installed inside the stopper pin 20 to provide an elastic force so that the stopper pin 32 does not arrest the lock gear 18a and a spring 33 for lowering the stopper pin 32, And a lock portion 31 for restricting the gear 18a. Accordingly, while the lock portion 31 presses the stopper pin 32, the stopper pin 32 restrains the lock gear 18a to prevent the drive unit 18 from rotating, and the lock portion 31 The stopper pin 32 is lifted by the elastic force of the spring 33 and is separated from the lock gear 18a so that the drive unit 18 can be rotated.

Hereinafter, the operation of the low noise and noiseless mobile rack handle of the present invention will be described.

6 (a), when the handle body 11 is rotated in a clockwise direction with the handle 11a of the handle body 11 at the bottom, the holding plate 12 is integrally formed with the handle body 11 Rotate. The same is true of the case where the handle body 11 is rotated counterclockwise. At this time, since the operating member 16 positioned between the fixing plate 12 and the driving gear 16 does not rotate, the operating pin 14 inserted into the operating groove 13 ' Is positioned at the end of the guide grooves 11 'and 12' in accordance with the rotation of the handle body 11 and the fixing plate 12. [ When the handle body 11 is further rotated in this state, the operation pin 14 is moved upward along the operation groove 13 'of the operation member 13, and as shown in FIG. 6 (b) Is inserted into the gear groove 16 'of the driving gear 16 at the upper end of the driving gear 13' to restrain the driving gear 16.

When the handle body 11 is continuously rotated, the rotational force of the handle body 11 is transmitted to the driving gear 16 through the actuating pin 13, and the driving shaft 15, on which the driving gear 16 is mounted, The driving unit 18 is rotated. At this time, the stopper pin 32 of the lock mechanism 30 can not rotate the lockup gear 18a of the drive unit 18 until the drive unit 18 can rotate. The driven sprocket 19 connected to the drive sprocket 18b of the drive unit 18 as a chain rotates to horizontally move the mobile rack. However, if the lock gear 18a of the drive unit 18 is restrained by the stopper pin 32 of the lock mechanism 30, the drive unit 18 is not rotated, It can not be rotated any more. When the pull main body 11 is not rotated, the pull main body 11 and the operating pin 13 are moved to the initial position (left and right) by the weight of the pull main body 11 and the shape characteristics of the guide grooves 11 ' Lt; / RTI >

The handle body 11 is preferably rotated 360 degrees, but may be rotated to 360 degrees or less or 360 degrees to (b) as shown in FIG. 6 (c). 6 (d), the knob body 11 and the operating pin 13 are moved to the initial position (see FIG. 6 (d)) by the self weight of the knob body 11 and the shape characteristics of the guide grooves 11 ' Lt; / RTI >

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Various modifications and variations will be possible without departing from the spirit of the invention. Therefore, the scope of the present invention should be construed as being covered by the scope of the appended claims, and technical scope within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10 ... Mobil Rack Handle
11 ... handle body
11a ... handle
11b ... accommodating portion
11 '... guide groove
12 ... fixed plate
12 '... guide groove
13 ... operating member
13 '... working home
14 ... operation pin
15 ... drive shaft
16 ... drive gear
16 '... Gear groove
17 ... Sound absorbing cover
17 '... Elastic locking piece
18 ... driver fisherman
18a ... lock gear
18b ... drive sprocket
19 ... sprocket
20 ... driving frame
25 ... bearing member
30 ... lock mechanism
31 ... locking portion
32 ... Stopper pin
33 ... spring

Claims (5)

In a mobile rack handle (10) provided at one side of a mobile rack,
A drive shaft (15) rotatably mounted on a bearing member (25) of a drive section frame (20) provided in a mobile rack;
A handle body 11 provided on the outside of the driving unit frame 20 and having a handle 11a at a position spaced from the rotation center by rotating the driving shaft 15;
A drive gear (16) having gear grooves (16 ') formed on its outer peripheral surface at regular intervals and rotating together with the drive shaft (15);
A fixing plate (12) coupled to the handle body (11) from the outside of the driving gear (16);
An operating member (13) disposed between the driving gear (16) and the fixed plate (12) and rotatably coupled to the driving shaft (15);
An operating pin 14 movably installed on the operating member 13 to transmit the rotational force of the handle body 11 to the driving shaft 15 through the driving gear 16 by restricting the driving gear 16; / RTI >
A guide groove 11 'and 12' into which both ends of the operation pin are inserted are formed in the receiving portion 11b of the handle body 11 and the fixing plate 12, (14 ') is inserted by the guide grooves (11') and (12 ') when the handle body (11) is rotated, And moves along the operating groove (13 ') to selectively restrain the drive gear (16). delete The method according to claim 1,
Wherein the guide grooves (11 ') and (12') are formed in a V-shape symmetrical with respect to the center of the handle, and have an angle of 80 to 120 °. The method according to claim 1,
A drive gear 18 formed integrally with a drive sprocket 18b and a lock gear 18a is provided on the drive shaft 15,
And a lock mechanism (30) for locking the lock gear (18a) and fixing the drive shaft (15) so as not to rotate. The method according to any one of claims 1, 3, and 4,
Characterized in that a sound absorbing cover (17) is detachably coupled to a receiving portion (11b) of the handle body (11) and at least one elastic retaining piece (17 ') is provided on the sound absorbing cover (17) Low Noise Mobile Rack Handle.

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