CN2718659Y - Support structure for keyboard - Google Patents

Abstract

The utility model discloses a support structure for keyboard which can be positioned below a desk and can move horizontally and perpendicularly relative to the desk so as to cause the keyboard to be positioned in an appropriate position. The support structure for keyboard comprises an installing rack connected with the desk, an upper arm pivoting to the installing rack by a first shaft rod, a side arm positioning on both sides of the installing rack and pivoting to the installing rack by a second shaft rod, and a bracket pivoting the upper arm by a third shaft rod and pivoting the side arm by a fourth shaft rod respectively; after the limiting position of the bracket is canceled mainly through the flexible connection of the fourth shaft rod, the utility model adjusts a non-section perpendicular position by the linkage of the first, the second and the third shaft rods, and in this manner, the support for keyboard is formed; the support for keyboard is convenient to force application and coincident with human body engineering with few assembling parts.

Description

Keyboard is constructed with support

Technical field

The utility model relates to a kind of keyboard constructs with support, but the keyboard support that particularly a kind of donating bond dish is put and carried out level and perpendicular displacement with human body proper handling position.

Background technology

Because the use of computing machine is universal day by day, for the user when the operation keyboard, make keyboard not take desk-top space, and take into account ergonomics and avoid human hands to need the identical posture of long term maintenance and the injury that causes, can use keyboard to comply with human body sitting posture and hand position is carried out the stepless adjustment with support.

Existing keyboard is with No. the 4616798th, the visible United States Patent (USP) of support, this Patent publish a kind of with one fixedly the support of keyboard be connected to the parallelogram linkage of table below, but it has a shortcoming, this parallelogram linkage is attached to the keyboard holder below, thereby cause the space between bottom and the ground very limited, limited the activity of human body shank.

Though United States Patent (USP) the 5257767th changes the activity space of attempting to increase shank with non-parallel quadrilateral connecting rod mechanism at the aforementioned patent shortcoming, in fact, because linkage assembly still is attached at the keyboard holder below, increasable space is very limited.

No. the 5924664th, United States Patent (USP) proposes to improve at above-mentioned two patents, its assembly include mounting, with support member, carriage, upper arm, at least one side arm and at least one stop motion mechanism of the mounting of swivel mount combination, this invention mainly is to carry out the connecting rod manner of execution by four orientation axes points, and be that the concavity face has the effect that friction force produces the clip location by side arm and stop motion mechanism relative bonding face, but still have following defective:

The mode that this invention still adopts traditional parallelogram or non-parallel tetragonal 4 connecting rods location to articulate is carried out the vertical stepless displacement of interlock, the curved end that extends by side arm obtains the location in the friction force effect of first side of stop motion mechanism, because side arm and stop motion mechanism are metal material and make, and consider the simple and easy application of force of people's physical efficiency and the required friction force of clip, on the throne moving past in the journey, often can't obtain good harmony, especially metal friction itself can produce heat and noise, uses the easier curved end wearing and tearing that cause for a long time.

In addition, according to ergonomics, during operation keyboard, user's forearm must be parastate with the back of the hand, and consider that carriage has the effect of good supporting hand, the relative forearm of carriage must be good with parastate also, but the carriage of each patent of prostatitis is at the unspecified angle of side arm with respect to ground, all be that the maintenance certain angle (generally all is slightly to raising up about 3 °, please refer to the 54th of this case Patent right requirement), for the user, forearm down arrives the angle of operating position in the most close table position, be the state that tilts gradually, if carriage is along with changing angle, carriage will be subdued gradually to the effect of wrist and forearm support, use the required posture of this keyboard still may damage and keep for a long time.

The utility model content

Fundamental purpose of the present utility model is to address the aforementioned drawbacks, for avoiding the existence of this defective, the utility model 4 traditional axostylus axostyles of forgoing are the pattern that fixed point articulates, but change with the one axostylus axostyle is the connected mode of activity, like this, after can removing the relation of joining of friction anchor point earlier, carry out the displacement of interlock stepless with other three fixed points axostylus axostyle again, reduce the rate of wear of correlated parts and prolong life of product with this, and can avoid the audible noise that produces because of displacement, and restriction because of zerofriction force, the action of linkage assembly of the present utility model will more help the human hands application of force, use and make keyboard can more meet common people with support, in addition, side arm of the present utility model near the table extreme higher position to leaving under the big situation of angle change between the table extreme lower position, the angle of the relative table of carriage must diminish, that is to say, carriage will move down and complies with user's forearm and be predetermined angle incline with corresponding arm, allow user's forearm no matter at which operating position, forearm all can obtain effective support, more meets ergonomics and reduces possible injury.

For achieving the above object, the utility model comprises upper arm that a mounting that joins with table, articulates with first axostylus axostyle with mounting, be positioned at the mounting both sides and the side arm and that articulates with second axostylus axostyle and mounting articulates upper arm with the 3rd axostylus axostyle respectively and reaches carriage with the 4th axostylus axostyle pivot joint side arm, after mainly can removing the restriction site of carriage for the flexible connection state by the 4th axostylus axostyle, carry out the stepless upright position adjustment of interlock again with first, second and third axostylus axostyle, it is few and can be convenient to the keyboard support of the application of force to constitute a kind of parts like this.

Description of drawings

Fig. 1 is according to STRUCTURE DECOMPOSITION synoptic diagram of the present utility model;

Fig. 2 is according to stereoscopic synoptic diagram of the present utility model;

Fig. 3-1～3-12 is according to adjustment action synoptic diagram of the present utility model;

Fig. 4-1～4-6 is Fig. 3-side arm of 1～3-12 demonstration and the synoptic diagram of carriage angle;

Fig. 5 is the synoptic diagram according to rotation adjustment action of the present utility model;

Fig. 6 is the synoptic diagram according to embodiment of the present utility model;

Fig. 7 is the synoptic diagram according to stacker of the present utility model;

Fig. 8-the 1st is according to the user mode synoptic diagram of stacker of the present utility model;

Fig. 8-the 2nd is according to the synoptic diagram of fixture of the present utility model;

Fig. 9 is the synoptic diagram according to rotating mechanism of the present utility model; And

Figure 10-1,10-2 are the action synoptic diagram according to rotating mechanism of the present utility model.

Embodiment

Relevant detailed description of the present utility model and technology contents, existing accompanying drawings is as follows:

See also Fig. 1,2,3-1, shown in 5, the utility model be positioned table 130 times and can corresponding table 130 carry out level and perpendicular displacement to suitable keyboard (not shown) operating position place, the utility model comprises a mounting 10 that joins with table 130, one provides upwards with mounting 10 with the elastic recovery assembly 80 that disposes on it, and first axostylus axostyle a of bias voltage is articulated in the hole 11 that is pivoted, 221 upper arm 20, be positioned at mounting 10 both sides and be articulated in the hole 12 that is pivoted with the second axostylus axostyle b and mounting 10,32 side arm 30, and one articulate upper arm 20 and articulate side arm 30 in the hole 211 that is pivoted with the 4th axostylus axostyle d with the 3rd axostylus axostyle c respectively, 43 carriage 40.

Forward and backward fin 21,22 is extended in the hole the 211, the 221st that is pivoted of aforementioned upper arm 20 respectively in the front and back ends both sides, and forward and backward fin 21,22 is provided with the hole 211,221 that is pivoted that first and third axostylus axostyle a, c articulate, the main application of forward and backward fin 21,22 is to have a determining deviation between upper arm 20 and mounting 10 and the carriage 40, except that being convenient to vertical the adjustment, also can pass ornaments for keyboard chord.

Winding has a track sheet 90 below table 130 in addition, and on mounting 10, be connected with a slide track seat 70, the both sides of slide track seat 70 have flank sheet 71, be equipped with on the flank sheet 71 one can horizontal shift on track sheet 90 slide rail bar 72, and mounting 10 is provided with a Rotary District 13, disposes a rotating disk 60 between Rotary District 13 and slide track seat 70.

And aforementioned first, two, three axostylus axostyle a, b, c articulates with the dead axle continuous action relation, and side arm 30 is provided with the positioning hole 31 of a transverse width greater than the 4th axostylus axostyle d outer tube diameter in the pivot points of the 4th axostylus axostyle d, and in side arm 30, dispose an outer tube diameter greater than the 4th axostylus axostyle d and positioning hole 31 sleeve pipe d1 highly, and being provided with one in side arm 30 has towards the stop assembly 34 of the face of only pulling 341 of carriage 40, and be provided with the displacement aperture 42 of arc positioning track at carriage 40 corresponding aforementioned positioning holes 31 places, and the outermost of this displacement aperture 42 is corresponding restriction faces 421 that are connected to the face of only pulling 341 of stop assembly 34.

In addition, the middle section position of upper arm 20 is provided with the transverse holes 23 of a corresponding perpendicular displacement stroke, transverse holes 23 disposes one the 5th axostylus axostyle e to articulate the be pivoted hole 33 and the upper arm 20 of side arm 30, and has a underarm 50 in the bottom of this two side arms 30, the usefulness of the 5th axostylus axostyle e configuration is intended to auxiliary upper arm 20 and side arm 30 on the throne moving past in the journey, do not have any skew or inclination, have the effect that strengthens friction force and integral product intensity simultaneously yet.

Carry out before the perpendicular displacement adjustment, the user can pass through the slide rail bar 72 of slide track seat 70 both sides fins 71 assemblings earlier on track sheet 90, table 130 carries out horizontal shift (just will put in order the group keyboard and outwards or inwardly be moved to the human body operating position with support) relatively, in addition, after the horizontal shift adjustment finishes, shown in the 5th figure, Rotary District 13 inner rotary tables, 60 relative slide track seats 70 by mounting 10 carry out the rotation adjustment of left-hand or dextrad again, certainly, horizontal adjustment and rotation are adjusted also and can be implemented after vertical the adjustment.

Vertical set-up procedure of the present utility model can be divided into:

One, Fig. 3-1,3-2 shows that side arm 30 is in the extreme higher position near table 130, be noted that, the restriction face 421 of carriage 40 forms the relation of pulling of supporting with its lower section and the face 341 of only pulling, at this moment, Fig. 3-3, among the 3-4, force in earlier on the carriage 40 and move, because the 4th axostylus axostyle d is movable pivot joint state, when on carriage 40, moving, the 4th axostylus axostyle d in displacement aperture 42 to top offset, and be subjected to displacement aperture 42 for arc positioning track promote the 4th axostylus axostyle d at positioning hole 31 places to carriage 40 direction displacements (positioning hole 31 slightly is vertical to configuration with displacement aperture 42), at this moment, arrive the position of the positioning hole 31 of close carriage 40 at the 4th axostylus axostyle d, the restriction face 421 of carriage 40 will break away from the face 341 of only pulling, and remove its state that joins, certainly, its corresponding friction force does not exist yet.

Two, the friction force state is removed owing to join, the user can force in carriage 40 easily, by the 3rd axostylus axostyle c interlock upper arm 20, again by first, two shaft lever a, b is that fulcrum carries out vertical stepless displacement, as Fig. 3-5,3-6 is moved to middle section position, perhaps as Fig. 3-9,3-10 is moved to the lowermost end position, be noted that, because the positioning track of restriction face 421 and displacement aperture 42 such as has at the shape radian, and the face 341 of only pulling itself also has the recessed face of certain curvature, therefore in the perpendicular displacement process, restriction face 421 will more and more littler with the gap of the face 341 of only pulling, and therefore also define user's adjustable range and the restriction face of avoiding 421 disengaging setting ranges and lose locating effect.

Three, after the user arrives required adjustment upright position, carriage 40 application of forces are removed, carriage 40 will move down the Reversion Level position synchronous and move in the position of positioning hole 31 to the direction of stop assembly 34 because of the positioning track of displacement aperture 42 promotes the 4th axostylus axostyle d, at this moment, the restriction face 421 of carriage 40 will join with the face 341 of only pulling, and support to pull mutually by friction force that its mutual curved surface produced and form the location, this step can be by Fig. 3-7,3-8 obviously finds out, when side arm 30 positions when leaving the centre position of table 130, the restriction face 421 of carriage 40 forms the relation of pulling of supporting with its middle section and the face 341 of only pulling, and by Fig. 3-11, obviously find out among the 3-12, when the position of side arm 30 when leaving the extreme lower position of table 130, the restriction face 421 of carriage 40 forms the relation of pulling of supporting with its epimere place with the face 341 of only pulling.

Four, can be shown in Fig. 6,7,8-1 on carriage 40, carriage 40 has a bearing plate 41 with winding one stacker 100, in order to put keyboard, after finishing level, rotation, reaching vertical the adjustment, stacker 100 on the carriage 40 will slightly be horizontal arrangement with table 130, after allowing the user put keyboard, can be adjusted to appropriate location according to sitting posture and hand position really;

Above-mentioned stacker 100 has a receiver 110, and in order to article-containing, it has a container 111, a lid 112 and a cushion 113; One carrier 120, in order to carrying keyboard and receiver 110, it has one first loading end 121 and one second loading end 122, second loading end 122 is used for carrying aforesaid receiver 110, and receiver 110 provides aforementioned function of taking in article, and first loading end 121 be not positioned on the same surface level with this second loading end 122, and second loading end 122 is lower than first loading end 121, receiver 110 places on second loading end 122;

Has more than one separation trough 114 in the said vesse 111, separation trough 114 is used for separating the article that are installed in the container 111, and lid 112 can be done relative open and close movement with container 111, and aforementioned cushion 113 can provide the dependence of user's hand when the user uses keyboard;

In addition, see also Fig. 8-1,8-2, carrier 120 has a fixture 123 near user's direction places, provides the user when the Hard copy data is keyed in computing machine, can be so that study data on the paper carefully, and exactly with in the data input computing machine; Being provided with one at carrier 120 connects and establishes groove 124, fixture 123 is articulated in to connect establishes in the groove 124, fixture 123 can arbitrarily up or down be pulled, fixture 123 is two-piece types, comprise a support member 125, an and elastic component 126, between elastic component 126 and support member 125, define a folder and establish portion 127, and offer at least one profile groove 128 at place, both sides that elastic component 126 is connected with support member 125,128 ', allow the user only fixture 123 up be pulled from connecing to establish in the groove 124, again written information or paper clamp are held in the profile groove 128 between elastic component 126 and the support member 125, in 128 ', just can effectively fix the written information that to import, and save the usage space of table for computer desktop and make things convenient for the user in the data of closely studying carefully on the paper, and exactly with in the data input computing machine, when fixture 123 is finished using, it down can be pulled and be hidden in to connect to establish and make to decorate usefulness in the groove 124, and convenient collection.

Five, can be on carriage 40 as Fig. 9,10-1, shown in the 10-2, between the bearing plate 41 of carriage 40 and stacker 100, be provided with a rotating mechanism 15, rotating mechanism 15 satisfy stacker 100 relatively carriage 40 left rotation and right rotation to certain angle, provide the user preferable work angle with this, aforesaid rotating mechanism 15 comprises that one connects the limit assembly 153 established, an and positioning disk 151 with bearing plate 41, and positioning disk 151, bearing plate 41, and limit assembly 153 on opposite position be provided with axis hole f, and be equipped with screw rod 154 and with nut 155 lockings at axis hole f;

When needing change keyboard operation position when the corresponding screen position of user, directly force in positioning disk 151, making positioning disk 151 is axle with screw rod 154, gets final product extremely suitably angle of relative carriage 40 left rotation and right rotation, constitutes keyboard of the present utility model like this and constructs with support.

Below the angle of the side arm 30 that produced at the aforementioned operation step and carriage 40 relative tables 130 change and describe, lift on carriage 40 application of forces that the restriction face of making 421 breaks away from the face 341 of only pulling and when removing it and joining state, because the positioning track of displacement aperture 42 has radian, gap after restriction of assumption face 421 breaks away from the face 341 of only pulling is w1 (Fig. 3-4) in side arm 30 the most close tables 130 positions, 30 times pan position of side arm are w2 (Fig. 3-6) to the place, centre position of leaving table 130, it is w3 (Fig. 3-10) that side arm 30 moves down into its lowest position of leaving table 130, it is w1＞w2＞w3 that this gap length closes, and be arcuation by this face 341 of only pulling mutually with restriction face 421 and support the face of pulling, therefore producing carriage 40 relative tables 130 is angle change.

Before carrying out following illustration, for understanding the position of the corresponding relation of icon, now the horizontal line of table 130 is moved down with the imaginary line of a dotted line and represent, described angle all is angles of relative table 130 and deciding, be not to be the variable angle of carriage 40 relative side arms 30, please pay special attention to, at first, from the leading portion explanation, clearly understand the gap variable quantity of carriage 40 and side arm 30, for another example shown in Fig. 4-1, carriage 40 of the present utility model can be preset with certain tilt angle theta 1 (about 3 °) earlier, the angle of side arm 30 relative tables 130 is θ 7, side arm 30 the extreme higher positions of this angle θ 1 and θ 7 presentation graphs 3-1 at the most close table 130, lift the state as Fig. 3-3 on carriage 40, angle will be varied to shown in Fig. 4-2, and the slanted angle of carriage 40 relative tables 130 will increase for θ 2 (about 10 °), this moment, side arm 30 did not change the position, so and the angle theta 8=θ 7 of table 130.

Vertically be displaced downwardly to centre position such as Fig. 3-5 at application of force carriage 40, side arm 30 increases with the angle theta 9 of table 130, and shown in Fig. 4-3, at this moment, carriage 40 is not removed the application of force as yet, not that is to say θ 3=θ 2 so the angle θ 3 of relative table 130 changes.

Remove in carriage 40 application of forces, shown in Fig. 3-7, when carriage 40 is positioned the centre position, the angle of side arm 30 relative tables 130 is that θ 10=θ 9 does not change, but because the gap eliminates, and cause the angle of carriage 40 relative tables 130 slightly to reply and become θ 4 (about 7 °), but θ 4 is still greater than θ 1 less than θ 3, that is to say that it is bigger that carriage 40 relative table 130 angles have been changed into degree of tilt.

In Fig. 3-9, carriage 40 vertically moves down into its lowest position not removing under the application of force state, at this moment, angle theta 11 maximums of side arm 30 and table 130, but carriage 40 is not removed the application of force as yet, so relative table 130 angle θ 5 do not change, that is to say θ 5=θ 3=θ 2.

Shown in Fig. 3-11, carriage 40 application of forces are removed, when carriage 40 is positioned extreme lower position, the angle of side arm 30 relative tables 130 is that θ 12=θ 11 does not change, but because the gap eliminates, the angle that causes carriage 40 relative tables 130 will slightly be replied and be become θ 6 (about 9 °) less than θ 5, but θ 6 is still greater than θ 4 and θ 1, that is to say that the angle of carriage 40 relative tables 130 has been changed into maximum inclination.

From former sections explanations, to be positioned at the magnitude relationship of the angle theta 6 of the angle theta 4 in angle theta 1, centre position of the relative table 130 in extreme higher position and extreme lower position be θ 6＞θ 4＞θ 1 to carriage 40 as can be seen, the angle of inclination of therefore causing carriage 40 moves down along with the position of operation carriage 40 and increases, can meet ergonomics like this, when allowing user's forearm produce tilt condition equally (relatively human body vertical angle and decide), effective support can be obtained, therefore the injury of keeping long operation posture and may causing can be reduced.

Comprehensively above-mentioned, the utility model and United States Patent (USP) compare for No. 5924664, and the result is as follows:

One, manner of execution of the present utility model is vertically to adjust behind the face of lifting restrictions 421 and the face 341 friction positioning states of only pulling again, in the adjustment process, do not have the friction force restriction, user's application of force is more light, and do not have the metal friction sound, can avoid noise to produce.

Two, location of the present utility model fulcrum is between carriage 40 and side arm 30, therefore stop assembly 34 required friction force of bearing only add the weight of upper keyboard for carriage 40, therefore required friction force is less, make the utility model under stepless adjustment action, can all can obtain the effectively effect of location in each position, and the stop motion mechanism of No. the 5924664th, United States Patent (USP) must be born side arm 30, upper arm 20, underarm 50, carriage 40 and keyboard weight, not only moment is long, also causes damage too greatly easily because of the required friction force that provides.

Three, carriage 40 relative table 130 angles of the present utility model are not to immobilize, but when becoming big along with the angle of side arm 30, carriage 40 also changes its angle of inclination, makes the utility model more meet ergonomics.

The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.

Claims (10)

1. a keyboard is constructed with support, can be positioned under the table (130), and can described relatively table (130) carry out level and perpendicular displacement to suitable keyboard operation position, comprise a mounting (10) that joins with described table (130), one upper arm (20) that articulates with first axostylus axostyle (a) with described mounting (10), the side arm (30) that is positioned at described mounting (10) both sides and articulates with second axostylus axostyle (b) and described mounting (10), and one articulate described upper arm (20) and articulate the carriage (40) of described side arm (30) with the 4th axostylus axostyle (d) with the 3rd axostylus axostyle (c) respectively, it is characterized in that:

Described first, two, three axostylus axostyle (a, b, c) articulate with the dead axle continuous action relation, and described side arm (30) is provided with the positioning hole (31) of a transverse width greater than described the 4th axostylus axostyle (c) outer tube diameter in the pivot points of described the 4th axostylus axostyle (d), and being provided with one in described side arm (30) has towards the stop assembly (34) of the face of only pulling (341) of carriage (40), and locate to be provided with the displacement aperture (42) of arc positioning track at the corresponding described positioning hole of described carriage (40) (31), and the outermost of described displacement aperture (42) is a corresponding restriction face (421) that is connected to described face (341) of only pulling of described stop assembly (34), make on the described carriage (40) and move, described the 4th axostylus axostyle (d) is moved toward described carriage (40) direction at described positioning hole (31) along described displacement aperture (42) positioning track, and the outwards mobile described face (341) of only pulling of described restriction face (421) disengaging that makes of the described carriage of interlock (40), can force in described carriage (40) like this with the described the 1, three axostylus axostyle (a, b, c) carry out perpendicular displacement.

2. keyboard according to claim 1 is constructed with support, it is characterized in that described positioning hole (31) is vertical to configuration with described displacement aperture (42), and the positioning track of described restriction face (421) and described displacement aperture (42) such as has at the shape radian.

3. keyboard according to claim 1 is constructed with support, it is characterized in that the middle section position of described upper arm (20) is provided with the transverse holes (23) of a corresponding perpendicular displacement stroke, described transverse holes (23) disposes one the 5th axostylus axostyle (e) to articulate described side arm (30) and described upper arm (20).

4. keyboard according to claim 1 is constructed with support, it is characterized in that disposing in the described side arm (30) sleeve pipe (d1) of an outer tube diameter, and the bottom of described two side arms (30) has a underarm (50) greater than described the 4th axostylus axostyle (d) and described positioning hole (31) height.

5. keyboard according to claim 1 is constructed with support, the front and back ends both sides that it is characterized in that described upper arm (20) are extended forward and backward fin (21,22) respectively, and described forward and backward fin (21,22) is provided with the hole that is pivoted (211,221) that described first and third axostylus axostyle (a, c) articulates.

6. keyboard according to claim 1 is constructed with support, it is characterized in that disposing on described first axostylus axostyle (a) an elastic recovery assembly (80).

7. keyboard according to claim 1 is constructed with support, it is characterized in that described table (130) below winding has a track sheet (90), and on described mounting (10), be connected with a slide track seat (70), described slide track seat (70) both sides have flank sheet (71), be equipped with one on the described flank sheet (71) and can go up the slide rail bar (72) of horizontal shift at described track sheet (90), reach described mounting (10) and be provided with a Rotary District (13), and between described Rotary District (13) and described slide track seat (70), dispose a rotating disk (60).

8. keyboard according to claim 1 is constructed with support, it is characterized in that described carriage (40) is provided with a stacker (100), in order to carry a keyboard and article, comprising:

One receiver (110) comprises a container (111), reaches a lid (112), and described container (111) is in order to article-containing, and described lid (112) covers described container (111);

One carrier (120), in order to carrying keyboard and described receiver (110), described carrier (120) have one in order to one first loading end (121) that carries described keyboard, with one in order to carry one second loading end (122) of described receiver (110), described second loading end (122) extends towards user's direction from the leading edge of described first loading end (121), and described first loading end (121) is integral with one another and inseparable with described second loading end (122).

9. keyboard according to claim 8 is constructed with support, it is characterized in that described carrier (120) has one and connects and establish groove (124) and be pivoted for a fixture (123), described fixture (123) comprises that a folder that is defined by a support member (125) and an elastic component (126) establishes portion (127).

10. keyboard according to claim 8 is constructed with support, it is characterized in that being provided with a rotating mechanism (15) between described carriage (40) and the described stacker (100), described rotating mechanism (15) can make the described relatively carriage of described stacker (100) (40) left rotation and right rotation, described rotating mechanism (15) comprises a limit assembly (153) and a positioning disk (151), reach described limit assembly (153) and be provided with corresponding axis hole (f), for a screw rod (154) and nut (155) locking with described positioning disk (151).

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