CN101152715B - Folding structure for supporting table-board tool - Google Patents

Abstract

The present invention provides folding structure for supporting a table-type tool, which can be operated between an unfolding position and a folding position. The present invention comprises a carriage which is for the placement of the table tool, a couple of a first support leg and second support leg which are connected with the carriage and are contacted with the ground, a first pole which is connected with the carriage, a second pole which is connected with the second support leg and the first pole. Through this, when the discounting structure is operated to the folding place, the first pole and the second pole drive the second support leg close to the first support leg, at the same time, surface of the first pole is kept in colliding with the surface of the first support leg, so the folding movement can be executed more safely and more stably.

Description

The folding structure of supporting bable tops type instrument

Technical field

The present invention is relevant with the structure of supporting bable tops type instrument, the more detailed folding structure that is meant a kind of weight of utilizing institute's supporting bable tops type instrument table-board tool of the required application of force when sharing folding.

Background technology

Fig. 1 to Fig. 3 is a kind of existing in order to support the foot rest 2 as bench saw table-board tools 1 such as (table saw), its have a bracing frame 3 for table-board tools 1 and fixing, a pair of separated first member, 4 one ends are by being articulated with bracing frame 3 by pin 2a, and be connected with leader 4a in this end, the end that first member 4 has handle 4a relatively forms the touchdown point 4b that contacts with ground, a pair of separated second member 5 is by being articulated by the pin 2b and first member 4, and be provided with roller 5a in a termination, the end that second member 5 is provided with roller 5a relatively forms an extension 5b, the two ends of one connecting rod 6 are respectively by being articulated with the extension 5b of the bracing frame 3 and second member 5 by pin 2c and pin 2d, by this, make this foot rest 2 between the stowed position of the expanded position of Fig. 1 and Fig. 3, to be operated.

Though the weight that this foot rest 2 is designed to utilize table-board tool 1 required strength F1 that pulls down when sharing folding, to reach the purpose of ease of Use, so form and support on touchdown point 4b conflict ground with first member 4, table-board tool 1 is to tilt and its center of gravity W departs under the state of pivoting point (promptly selling the 2b place locates) of first member 4 and second member 5 (please refer to Fig. 2), when if the curable grip F2 that people put on handle 4a can't resist the weight of the table-board tool 1 that continuation topples over downwards, to cause second member 5 to draw close towards first member 4 apace, add the screen resilience influence that is connected in the spring 7 between first member 4 and second member 5 simultaneously, even possibility out of control and that generation is dangerous is arranged.

Secondly, this foot rest 2 is when expanded position, utilize the bayonet lock 8a of T type locking part 8 to pass the perforation 4c (with reference to Fig. 2) that is positioned at first member 4, and wear the perforation 9a on the fixed head 9 that is welded on second member 5, to limit first member 4 and second member 5 folding improperly can not take place.The bayonet lock 8a of this locking part 8 more when foot rest 2 is in stowed position, contacts at the outer side edges of the extension 5b of second member 5, avoids first member 4 and second member 5 that folding improperly takes place according to this.Really above-mentioned locking part 8 has the effect of blocking and location, but its design is with the mode hiding difficulty of aiming at of perforation 4c with perforation 9a contraposition, and locking part 8 needs to cooperate the expansion of foot rests 2/fold and repeatedly is drawn out and inserts, more cause the inconvenience of operation, moreover, the bayonet lock 8a of locking part 8 very likely is damaged because of foot rest 2 is caused first member 4 and second member 5 to produce the shearing action of moment by improper collision, is with, the design of above-mentioned foot rest 2 non-practicalities.

Summary of the invention

Main purpose of the present invention is to provide a kind of folding structure of supporting bable tops type instrument, and its weight that not only can utilize table-board tool required strength of pulling down when sharing folding more makes folding action safety.

For to reach above-mentioned purpose, the folding structure of a kind of supporting bable tops type instrument provided by the present invention can be operated between expanded position and stowed position, it includes one and supplies table-board tool in conjunction with the bracing frame on it, this bracing frame has a front end and a rear end, and between this front end and this rear end, be provided with one first pivoting point in regular turn, one second pivoting point and one the 3rd pivoting point; A pair of first leg, one end is articulated in first pivoting point of this bracing frame, and a relative end forms an abutment end that can contact with ground; A pair of second leg, one end is articulated in second pivoting point of this bracing frame, and a relative end respectively is equipped with a roller; A pair of first rod member distinctly has one first end and one second end, and this first end is articulated in the 3rd pivoting point of this bracing frame, and conflict is kept on the surface of this second end and first leg; A pair of second rod member, one end is articulated in the nearly the second end of first rod member position, and the other end is articulated in second leg; When folding structure is in expanded position, first leg and second leg are staggered and are provided with, and this bracing frame roughly is horizontal alignment, when folding structure is operated toward stowed position, first and second rod member drives second leg and draws close toward first leg, and in roller during near the abutment end of first leg, it is vertical orientated that this bracing frame roughly is, by this, the folding action can reach safely firmly to be carried out.

Description of drawings

Fig. 1 to Fig. 3 is that existing foldable foot rest self-deploys the action schematic diagram of evolution to stowed position;

Fig. 4 is the exploded perspective view of the folding structure of a preferred embodiment of the present invention supporting bable tops type instrument;

Fig. 5 is the amplification stereogram of slip lid among Fig. 4;

Fig. 6 is the constitutional diagram of Fig. 4;

Fig. 7 is another visual angle stereogram of Fig. 6;

Fig. 8～Figure 12 is that folding structure self-deploys the action schematic diagram of position to stowed position;

Figure 13 is the stereogram of Figure 12;

Figure 14 discloses another kind of latch components aspect.

[primary clustering symbol description]

10 bracing frame 10a front end 10b rear ends

11 cross bars, 12 first pivoting points, 13 second pivoting points

14 the 3rd pivoting points, 15 handles, 16 steady pins

18 first pivot pins, 19 second pivot pins

20 first legs, 201 curved surfaces

21 abutment ends, 22 guide portion, 23 contacts

24 adjustment part 24a screw thread body portions

30 second legs, 31 tie points

40 rollers

50 first rod member 50a, the first end 50b tie point

50c tie point 50d second end

51 elongate body, 52 slip lids, 521 contact-making surfaces

60 second rod members

70 block pieces

81 microscler guide groove 82 perforation of 80 connectors

90 latch components

91 first buckling piece 91a, the first hook part 91b pressing down section

92 second buckling piece 92a, second hook part

93 moving parts

94 first bridgewares, 95 second bridgewares, 96 wind springs

100 folding structures

200 table saws

300 ground

400 latch components

403 pins

410 buckling pieces, 411 first hook parts, 412 pressing down sections

420 bridgewares

430 fixtures

P1 expanded position P2 stowed position

The specific embodiment

Below lift preferred embodiment of the present invention now, and after cooperating graphic being illustrated in.

Fig. 4 to Figure 13 is the folding structure 100 of a preferred embodiment of the present invention, this folding structure 100 is for the table-board tool combination and be placed on ground 300, it can be operated between expanded position P1 shown in Figure 8 and stowed position P2 shown in Figure 12, in present embodiment, table-board tool is to be example with table saw 200.

Above-mentioned folding structure 100 comprises a bracing frame 10, a pair of first leg 20, a pair of second leg 30, a pair roller 40, a pair of first rod member 50, a pair of second rod member 60, a pair of block piece 70, a pair of connector 80 and a latch components 90, wherein:

This bracing frame 10 is made of the cross bar 11 of pair of parallel, and have a front end 10a and a rear end 10b, each cross bar 11 is provided with one first pivoting point 12, one second pivoting point 13 and one the 3rd pivoting point 14 in regular turn between this front end 10a and rear end 10b, and cross bar 11 front ends are bent to form the handle 15 that grips for hand downwards, and this table saw 200 is affixed with bracing frame 10 by passed and locked in admittedly cross bar 11 by most steady pins 16; When folding structure 100 was in expanded position P1, bracing frame 10 roughly was horizontal alignment, and when folding structure 100 was in stowed position P2, it is vertical orientated that bracing frame 10 roughly is.

Each first leg, 20 1 end is articulated in first pivoting point 12 of bracing frame 10 and is positioned at the outside of cross bar 11, and a relative end is bent to form an abutment end 21 and a guide portion 22 continuously, and first leg, 20 nearly middle parts have a tie point 23; Put so that table saw 200 is uprightly on this guide portion 22 conflict ground 300 when folding structure 100 folds, and in addition, is fixed with this on each first leg 20 respectively and is block block piece 70.

Each second leg, 30 1 end is articulated in second pivoting point 13 of bracing frame 10 and is positioned at the inboard of cross bar 11, a relative termination be provided with can be in ground 300 roller 40, the second legs 30 that roll and be provided with a tie point 31 in the place, top of nearly middle part; State as shown in Figure 8, first leg 20 of this moment and second leg 30 are staggered and are provided with; When folding structure 100 was operated to shown in Figure 12 complete stowed position P2, roller 40 was near the abutment end 21 of first leg 20.

Each first rod member 50 has one first end 50a and one second end 50d, in present embodiment, first rod member 50 is to be made of an elongate body 51 and a slip lid 52, these elongate body 51 tops constitute this first end 50a, and be articulated in the 3rd pivoting point 14 of bracing frame 10 and be positioned at cross bar 11 outsides and with 20 of first legs on same vertical extension plane, elongate body 51 body portions are provided with tie point 50b and tie point 50c; This slip lid 52 is incorporated into the end of this elongate body 51, and it has the indent arc contact surface 521 that cooperates with the curved surfaces 201 of first leg 20, and this contact-making surface 521 promptly constitutes this second end 50d; Each first rod member 50 when folding structure 100 launches fully is and respectively these block piece 70 conflicts.

Each second rod member 60 is between second leg 30 and first rod member 50, and the tie point 50b of the one end and first rod member 50 articulates, and the tie point 31 of the other end and second leg 30 articulates; State as shown in Figure 8, first rod member 50 are parallel second leg, 30, the second rod members 60 in fact and are parallel cross bar 11 in fact, that is, those members constitute parallel four-bar linkage jointly, in this simultaneously, roughly are folder between first rod member 50 and first leg 20 and establish the right angle.

Each connector 80 is for having the microscler plate body of a microscler guide groove 81 and a perforation 82, it articulates by the tie point 50c that is passed microscler guide groove 81 backs and first rod member 50 by one first pivot pin 18, and by passed tie point 23 pivot joints of perforation 82 backs and first leg 20 by one second pivot pin 19, this connector 80 has the steadiness of strengthening folding structure 100 integral body.

Above-mentioned folding structure 100 is when operation folds, people with hold hold 15 and will mention to cause table saw 200 to tilt, and in pulling process down, the weight that must utilize table saw 200 required application of force when sharing folding, in addition for effectively controlling the speed of pulling down, people not only can see through the curable grip size that puts on the handle 15 and control the speed of pulling down, more can utilize the slip lid 52 of first rod member 50 keeping at any time the relation of conflicting with first leg 20, vertically put and table saw 200 is put to guide to change into from level with walking unhurriedly, in this way, people promptly can oneself power and easily control fold the speed of rhythm, avoid causing danger because of folding fast.

In addition, the structure of present embodiment more can be assembled with respectively at each first leg, 20 nearly abutment end 21 can touch the adjustment part 24 that is butted on ground 300, this adjustment part 24 is impelled folding structure 100 its integral body when running into uneven ground still can keep steadily by moving back for changeing to advance or revolve by turning relative first leg 20 of its screw thread body 24a of portion.

Above-mentioned folding structure 100 provides laborsaving operation and advantage safe in utilization, in addition for strengthening the security of overall structure under expansion or collapse state, folding structure 100 is more set up this latch components 90, please cooperate Fig. 4, Fig. 7, this latch components 90 comprises one first buckling piece 91, one second buckling piece 92, a moving part 93, one first bridgeware 94 and one second bridgeware 95, wherein:

This first buckling piece 91 and second buckling piece 92 are to be located on same second leg 30, and form one first hook part 91a and one second hook part 92a respectively at front end, and this first buckling piece 91 more is provided with a pressing down section 91b in the side of the relative first hook part 91a;

This moving part 93 is a body of rod, and one end and first buckling piece, 91 nearly pressing down section 91b positions articulate, and the other end then articulates with 92a position, second buckling piece, 92 nearly second hook part;

This first bridgeware 94 is that microscler plate body and two ends and this 2 first rod member 50 are affixed, this second bridgeware 95 also is that microscler plate body and its two ends and this 2 first leg 20 are affixed, and respectively this bridgeware 94,95 has the steadiness of strengthening this 2 first rod member 50 and these 2 first legs 20.

When folding structure 100 was in expanded position P1, the second hook part 92a of second buckling piece 92 caught on second bridgeware 95, can avoid first leg 20 and second leg 30 that clamping takes place in view of the above; And when desiring to fold folding structure 100, people utilize the pressing down section 91b of foot-operated this first buckling piece 91, can see through moving part 93 and with the second hook part 92a band of second buckling piece 92 from second bridgeware 95 (with reference to Fig. 9), then take advantage of a situation and pull and fold this folding structure 100 down and (please refer to Figure 10, Figure 11), along with the abutment end 21 of roller 40 near first leg 20, the outside cambered surface of the first hook part 91a will guide first buckling piece, 91 front ends to cross first bridgeware 94, after, the first hook part 91a catches on first bridgeware 94 (with reference to Figure 12) really by the biasing force that is provided by the wind spring 96 (with reference to Fig. 4) that is installed between first buckling piece 91 and second leg 30 again, separates with second leg 30 with first leg 20 that prevents to close up in view of the above; Similarly, people can cause the first hook part 91a to break away from first bridgeware 94, and then folding structure 100 must be launched once more in the pressing down section 91b that rides first buckling piece 91 once more.

From the above, this latch components 90 at folding structure 100 when folding fully or launching, be automatically to finish the hook action to keep the state of first leg 20 and second leg 30, and only need utilize foot-operated this pressing down section 91b can remove hook, so the latch components 90 of present embodiment has been improved above-mentioned Fig. 1 to Fig. 3 really and has been disclosed the inconvenience of existing locking part 8 operation that brings.

Please consult Figure 14 in addition again, it is another structure aspect of latch components of the present invention, this latch components 400 comprises a buckling piece 410, a bridgeware 420 and a fixture 430, and above-mentioned bridgeware 420 is connected this 2 second leg 30 and this 2 first rod member 50 respectively with fixture 430; This buckling piece 410 by by pin 403 the axle pivot on this bridgeware 420, and its front end forms one first hook part 411, the rear end forms a pressing down section 412, when first leg 20 and second leg 30 are drawn close, fixture 430 is caught on by the biasing force that the wind spring (figure does not show) of being located at buckling piece 410 bottom surfaces by the Tibetan is provided in first hook part 411 of buckling piece 410, to prevent that first leg 20 and second leg 30 from separating, can impel first hook part 411 to break away from fixture 430 and step on this pressing down section 412, and then first leg 20 and second leg 30 are launched once more in pin.

The above only is a preferable possible embodiments of the present invention, uses the equivalent structure variation that specification of the present invention and claim are done such as, ought to be included in the claim of the present invention.

Claims (10)

1. the folding structure of a supporting bable tops type instrument, it is placed on ground, and can be operated between expanded position and stowed position, it is characterized in that comprising:

One bracing frame, in conjunction with on it, this bracing frame has a front end and a rear end for table-board tool, and between this front end and this rear end, be provided with one first pivoting point in regular turn, one second pivoting point and one the 3rd pivoting point;

A pair of first leg, one end are articulated in first pivoting point of this bracing frame, and a relative end forms an abutment end that contacts with ground;

A pair of second leg, one end are articulated in second pivoting point of this bracing frame, and a relative end respectively is equipped with the roller in ground surface;

A pair of first rod member has one first end and one second end respectively, and this first end is articulated in the 3rd pivoting point of this bracing frame, and conflict is kept on the surface of this second end and first leg; And

A pair of second rod member, one end are articulated in the nearly the second end of first rod member position, and the other end is articulated in second leg;

Support frame as described above comprises the cross bar that pair of parallel is provided with, described a pair of cross bar top is in conjunction with table-board tool, each cross bar has this first pivoting point, this second pivoting point and the 3rd pivoting point in symmetric position, first leg is linked to the cross bar outside, second leg is linked to the cross bar inboard, and first rod member is linked to the cross bar outside and is positioned on the same extension plane with first leg;

When folding structure is in expanded position, first leg and second leg are staggered and are provided with, and this bracing frame roughly is horizontal alignment, when folding structure is operated toward stowed position, first and second rod member drives second leg and draws close toward first leg, and during near the abutment end of first leg, it is vertical orientated that this bracing frame roughly is in roller.

2. the folding structure of supporting bable tops type instrument according to claim 1, it is characterized in that comprising a pair of connector, each connector articulates by one first pivot pin and the nearly middle part of first rod member respectively, and articulate by the nearly middle part of one second pivot pin and first leg, each connector also has the first or second above-mentioned pivot pin of a microscler guide groove confession and passes.

3. the folding structure of supporting bable tops type instrument according to claim 1, it is characterized in that each first rod member comprises an elongate body and a slip lid, this elongate body one end is articulated in the 3rd pivoting point of this bracing frame, another termination is established this slip lid, this slip lid have one with the contact-making surface of this first leg surface engagement, this contact-making surface constitutes second end of this first rod member.

4. the folding structure of supporting bable tops type instrument according to claim 1, it is characterized in that including at least one block piece is fixed on this first leg, at folding structure during in expanded position, this first rod member this block piece of conflicting, and this first rod member and this first leg roughly are folder and establish the right angle.

5. the folding structure of supporting bable tops type instrument according to claim 1 is characterized in that, at folding structure during in expanded position, and parallel second leg of first rod member, the second rod member parallel cross bar.

6. the folding structure of supporting bable tops type instrument according to claim 1 is characterized in that include a latch components, this latch components has one first hook part can remain on the state of drawing close with first leg and second leg that is in stowed position.

7. as the folding structure of supporting bable tops type instrument as described in the claim 6, it is characterized in that, described latch components comprises a bridgeware, a buckling piece and a fixture, these bridgeware two ends are individually fixed in this to second leg, this buckling piece axle pivot is on this bridgeware, and its front end forms this first hook part, and these fixture two ends are fixed in this respectively to first rod member, when folding structure was in stowed position, this fixture was caught in this first hook part.

8. as the folding structure of supporting bable tops type instrument as described in the claim 6, it is characterized in that described latch components has more one second hook part, this second hook part can remain on staggered state with first leg and second leg that is in expanded position.

9. as the folding structure of supporting bable tops type instrument as described in the claim 8, it is characterized in that, described latch components comprises one first buckling piece, one second buckling piece, one first bridgeware and one second bridgeware, this first buckling piece and the second buckling piece axle pivot are in one second leg wherein, and the one end forms this first hook part and this second hook part respectively, these first bridgeware two ends are individually fixed in this to first rod member, these second bridgeware two ends are individually fixed in this to first leg, at folding structure during in stowed position, first bridgeware is caught in first hook part, during in expanded position, second bridgeware is caught in second hook part at folding structure.

10. as the folding structure of supporting bable tops type instrument as described in the claim 9, it is characterized in that, described latch components also has a moving part and a bias piece, this moving part connects this first buckling piece and this second buckling piece, this first buckling piece end of this first hook part relatively is provided with a pressing down section, this bias piece impels this first hook part to keep toward the predetermined direction swing, at folding structure during in stowed position, execute an external force in this pressing down section, to impel first hook part to break away from first bridgeware, during in expanded position, execute an external force at folding structure, will impel second hook part to break away from second bridgeware in this pressing down section.

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