CN102632492A - Carrier with retractable legs - Google Patents

Abstract

A platform with a foldable tripod comprises a carrying frame, an operating unit, a first tripod and a second tripod. The operating unit is pivotally connected to the carrying frame and has a pair of guide slots and an operating rod inserted in the guide slots. The first tripod is pivotally connected to the operating unit and has a pair of positioning members, each of which has a positioning slot for the operating rod to pass through. The second tripod is pivotally connected to the carrying frame and the first tripod. By using the cooperation between the operating rod and the positioning slot, the first tripod can be positioned relative to the operating unit when unfolded, and can be folded relative to the operating unit at the right time.

Description

Carrier with retractable legs

technical field

The invention relates to a support carrier, in particular to a carrier platform with a foldable tripod.

Background technique

In order to provide convenience for the movement of general small processing machines (such as desktop sawing machines), most of the tripods carrying the machines are equipped with a foldable design for easy moving and use between different workplaces.

Such as U.S. Patents US6942229 and US5560582 respectively provide tripods with the aforementioned functions. In addition, the Taiwan invention patent I 311520 "support frame for implements" patent case approved by the applicant includes a bearing platform and a pair of pivots mounted on the bearing. A first leg on one side of the platform, a pair of second legs pivotally arranged on the other side of the carrying platform and pivotally connected with the first leg, a pair of elastic members sleeved on the second leg and a fixed device, the fixing device has a handle that can slide and pass through the carrying platform, two second connecting rods that are pivotally connected to the handle, and two first connecting rods that are pivotally connected to the second connecting rods and two springs respectively sleeved between the first connecting rod and the bearing platform, when the support frame is in the unfolded state, when the handle is pulled, it can drive the second connecting rod to pivot, so The second connecting rod can be linked with the first connecting rod to produce a relative approach along a straight line, and the end of the first connecting rod can be disengaged from the two positioning holes of the second leg, so that The second legs can slide along a pair of sliding sleeves respectively, so that the support frame can be folded.

The above-mentioned support frame can be used for carrying equipment, and can achieve the expected purpose of folding and unfolding. In order to provide another more convenient and quick operation mode, the applicant finally developed and produced the present invention.

Contents of the invention

The purpose of the present invention is to provide a stage with a collapsible tripod that is easy to operate and convenient to fold and unfold. The present invention has a stage with a collapsible stand, comprising a carrying frame, an operating unit, a first stand and a second stand, and the carrying frame has a first side and a first side with the first On the second side opposite to the side, the operating unit has a pair of pivots pivotally connected to the first side, a handle opposite to the pivot, a pair of The guide groove between the handle parts and an operating rod passing through the guide groove, the first tripod has a pair of first pivot joints pivotally connected to the operation unit, a pair of first pivot joints arranged on the A positioning piece on one side of the first pivotal part, a first end part opposite to the first pivotal part, and a pair of first pivotal parts arranged between the first pivotal part and the first end part Each of the positioning members has a positioning slot through which the operating rod can pass. The second tripod has a pair of second pivoting parts pivotally connected to the second side part, and a pair of second pivoting parts connected to the second side part. The second end portion opposite to the pivotal portion and a pair of second pivotal portions arranged between the second pivotal portion and the second end portion, the second pivotal portion and the first pivotal portion parts are pivotally connected to each other, when the first leg is unfolded relative to the operation unit, the first end portion and the second end portion are away from the supporting frame member, and when the first leg is folded relative to the operation unit, The first end portion and the second end portion are close to the bearing frame.

In the platform with a foldable tripod of the present invention, the guide slots of the operating unit each have a first end corresponding to the pivot portion and a second end opposite to the first end, the operation The unit also has a limiting group that enables the operating rod to be positioned at the first end.

In the stage with a collapsible tripod of the present invention, the limit group of the operating unit is a pair of elastic members connected to the operating rod, and the elastic force of the elastic members keeps the operating rod toward the first end. Mobile trends.

In the carrying platform with a foldable tripod of the present invention, the operating unit also has a U-shaped main rod, the main rod has two side rods, and the handle part is connected between the side rods. And the pivot part is arranged at the end of the main rod, the elastic part is installed inside the side rod, and the opposite ends are respectively implicated on the pivot part and the operating rod.

In the platform with foldable legs of the present invention, each of the positioning grooves of the first legs has a straight section, and one is connected to one side of the straight section and rotated by the first pivotal part. The arc section in the center, when the first leg is unfolded relative to the operating unit, the operating rod is located in the straight section, and when the first leg is folded relative to the operating unit, the operating rod can be moved by the The straight section guides and slides into the arc section.

In the platform with a foldable tripod of the present invention, the positioning slots of the first tripod also each have a clamping section connected to one side of the arc section and opposite to the straight section, the first section When a tripod is folded and positioned relative to the operating unit, the operating rod can be guided and slid from the arc segment into the clamping segment.

The stage with a foldable tripod of the present invention is characterized in that it also includes a locking unit, and the locking unit has a pair of fixedly mounted on one of the first tripod and the second tripod. pin and a pair of buckle plates pivotally arranged on the other of the first tripod and the second tripod, and each of the buckle plates has a buckle hole that can be buckled relative to the corresponding bayonet pin and a puller When the first leg is deployed relative to the operating unit, the buckle hole of the buckle plate is embedded and buckled on the bayonet pin.

In the carrying platform with a foldable tripod of the present invention, the second tripod also has a pair of baffles opposite to the bayonet and fixed on the other side of the second pivoting part. The first When the stand is deployed relative to the operation unit, the baffle plate abuts against the bottom edge of the first stand.

In the stage with a foldable stand of the present invention, in the unfolded state, the carrying frame, the operating unit, the first stand and the second stand form a four-bar linkage structure, and the operating unit is located on the Below the bearing frame.

In the stage with a collapsible stand of the present invention, in the collapsible state, the end of the operating unit provided with the handle portion moves outward to the outside of the first side portion of the carrying frame along the horizontal direction.

The beneficial effect of the present invention is that: when the carrying frame is lifted up and the operating lever is operated to slide relative to the guide groove and the positioning groove, the carrying frame, the operating unit, the first leg, The second leg is relatively pivoted to achieve the purpose of folding, and can be easily unfolded when the supporting frame is lifted up.

Description of drawings

Fig. 1 is a three-dimensional expanded view of a preferred embodiment of a carrier with a collapsible tripod in the present invention;

Fig. 2 is the unfolded front plan view of this preferred embodiment;

Figure 3 is an expanded side plan view of the preferred embodiment;

Fig. 4 is a partial enlarged schematic diagram of Fig. 2;

Fig. 5 is a schematic diagram of the operation of the preferred embodiment, illustrating that when an operating rod is pulled toward a handle, the operating rod will move from a first end of a pair of guide grooves to a second end;

Figure 6 is a plan view of the preferred embodiment after folding;

Fig. 7 is a partially enlarged schematic diagram of Fig. 6;

Fig. 8 is a perspective view of the preferred embodiment after it has been folded.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

As shown in Fig. 1 and Fig. 2, the preferred embodiment of the platform with collapsible tripod of the present invention includes a carrying frame 10, an operating unit 20, a first tripod 30, and a second tripod 40 and a locking unit 50.

The bearing frame 10 is in the shape of a rectangular frame, which can be installed and fixed for small processing machines, and has a first side 11, a second side 12 opposite to the first side 11, and a The carrying handle 13 of the part 11.

With reference to Fig. 3 and Fig. 4, the operating unit 20 has a U-shaped main rod 21, an operating rod 22 and a limiting group capable of positioning the operating rod 22. In fact, the limiting group It is a pair of elastic parts 23 connected to the operating rod 22 . The main rod 21 has two side rods 24 and a handle portion 25 connected between the side rods 24. The pivot portion 241 opposite to the portion 25 and a pair of guide grooves 242 between the pivot portion 241 and the handle portion 25, the pivot portion 241 is arranged on the side lever 24 of the main lever 21 At the end, each of the guide grooves 242 has a first end portion 243 corresponding to the pivot portion 241 and a second end portion 244 opposite to the first end portion 243 . The operating rod 22 is passed through the guide groove 242, the elastic member 23 is a tension spring and is installed inside the side rod 24, and the opposite ends are respectively connected between the pivot portion 241 and the operating rod. 22 , its elastic force keeps the operating rod 22 moving toward the first end 243 .

The first stand 30 is generally in the shape of a U-shaped frame, and has a pair of first pivot joints 31 pivotally connected to the operating unit 20, and a pair of positioning members 32 arranged on one side of the first pivot joints 31. , a first end portion 33 opposite to the first pivot portion 31, a pair of rollers 34 with shafts on both sides of the first end portion 33, and a pair of rollers 34 arranged between the first pivot portion 31 and the first end portion 31 The first pivot portion 35 between the first end portions 33 . The first pivot portion 31 is pivotally disposed on the side bar 24 and located between the guide slot 242 and the handle portion 25 . Each of the positioning members 32 has a positioning slot 321 for the operating rod 22 to pass through, and the positioning slot 321 has a straight section 322, a joint connected to one side of the straight section 322 and connected to the first pivot joint. The portion 31 is an arc segment 323 at the center of rotation and a locking segment 324 connected to one side of the arc segment 323 and opposite to the straight segment 322 .

The second leg 40 is generally in the shape of a U-shaped frame, and has a pair of second pivotal portions 41 pivotally connected to the second side portion 12, and a second end portion opposite to the second pivotal portion 41. 42. A pair of second pivoting parts 43 arranged between the second pivoting part 41 and the second end part 42 and a pair of baffles 44 fixed on one side of the second pivoting part 43 , the second pivoting portion 43 and the first pivoting portion 35 are pivotally connected to each other, and the baffle 44 is L-shaped.

The locking unit 50 has a pair of locking pins 51 fixed on the second leg 40 and a pair of locking plates 52 pivotally mounted on the first leg 30 . The locking pin 51 is located on one side of the second pivoting portion 43 , each of the buckling plates 52 has a pivot pin 521 pivoted on one side of the first pivoting portion 35 , and a pivot pin 521 opposite to the pivoting pin 521 . A buckle hole 522 is provided and can be engaged with the corresponding bayonet pin 51 , and a pulling portion 523 is disposed on one side of the buckle hole 522 .

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, when the first tripod 30 is unfolded relative to the operation unit 20, the first tripod 30 and the second tripod 40 intersect in an X shape, the The first end portion 33 and the second end portion 42 are far away from the bearing frame 10 , and are composed of the bearing frame 10 , the operating unit 20 , the first leg 30 and the second leg 40 to form a four-linkage. Structure, in the unfolded state, the operating unit 20 is located under the bearing frame 10 . At this time, the operating rod 22 is located in the straight section 322 of the positioning groove 321 , and the operating rod 22 can be kept against the first end of the guiding groove 242 by using the elastic force of the elastic member 23 part 243, then the main rod 21 can maintain a fixed state with a relatively large angle with the first stand 30, and cooperate with the cooperation between the second stand 40 and the bearing frame 10 to achieve the use of vertical support Purpose. Furthermore, by using the buckle hole 522 of the buckle plate 52 to be buckled on the bayonet pin 51, and the effect of the baffle plate 44 abutting against the bottom edge of the first tripod 30, it is also ensured that the stage as a whole is positioned at The structure in the standing state is stable.

1 and 2, if the stage is to be moved, the operator only needs to lift the handle 13 or lift the handle 25 of the operating unit 20 upwards, and the second end 42 will be released immediately. ground, and the whole carrier can be easily dragged by using the rollers 34 .

As shown in Figure 5 and with reference to Figure 2, when it is desired to be folded, the operator stands on the first side 11 corresponding to the bearing frame 10, and first lifts up the buckle 52 so that the buckle The hole 522 is disengaged from the bayonet pin 51, and after the carrying frame 10 is lifted up, the handle portion 25 and the operating rod 22 of the operating unit 20 are held by hand, and the operating rod 22 is applied with force. Pull toward the handle portion 25, the operating rod 22 will move from the first end portion 243 of the guide groove 242 to the second end portion 244 (at this time, the elastic member 23 is stretched to store the release elastic force ).

Next, the operator pulls the handle portion 25 toward the bearing frame 10, and when the main rod 21 is pivoted by the pivot portion 241, the first leg 30 is also relative to the operating unit. 20 to pivot, the operating rod 22 can slide into the arc segment 323 from the straight section 322, and when the operator releases the pressing force on the operating rod 22, and the operating rod 22 also slides to When the clamping section 324 is used, the operating rod 22 can be guided and slid into the clamping section 324 by the circular arc segment 323 by utilizing the elastic force of the elastic member 23 (see FIG. 7 ), and the operating rod 22 also moves to the second end 244 of the guide groove 242, so that when the first leg 30 is folded into a smaller angle relative to the operating unit 20, the second leg 40 will also be folded relative to the operating unit 20. The first leg 30 is folded into a smaller angle, so that the first end portion 33 and the second end portion 42 approach the bearing frame 10, and as shown in FIG. 6 and FIG. 8 , the first leg The frame 30 is folded and positioned relative to the operating unit 20. In the folded state, the end of the operating unit 20 provided with the handle portion 25 moves outward to the outside of the first side portion 11 of the bearing frame 10 along the horizontal direction. Then the overall volume of the carrier becomes smaller, which can save storage space.

When intending to operate from the state of FIG. 6 to the unfolded state of FIG. 2 , the operator lifts the handle 13 directly, and the first leg 30 will pivot relative to the operating unit 20 under the action of its own weight, and the operating unit 20 Affected by the first leg 30 , it can also pivot relative to the bearing frame 10 . When the first leg 30 pivots relative to the operating unit 20 , the operating lever 22 will be held by the locking section 324 Move out to the arc section 323 until the operating rod 22 corresponds to the straight section 322, the first tripod 30 and the second tripod can be connected by the elastic force of the elastic member 23 40 is relatively unfolded and the bearing frame 10 is maintained at the use height, and the operator then buckles the buckle plate 52 toward the bayonet pin 51 to return to the state shown in FIG. 2 and FIG. 4 .

Therefore, the structure of the present invention is simple, and the folding and unfolding can be completed with simple operation actions, and the operation is quite convenient and fast.

Claims (10)

1. but the microscope carrier with folding foot rest comprises one and carries framework, an operating unit, first foot rest and one second foot rest; This microscope carrier is characterised in that:

This carries framework, has one first sidepiece and second sidepiece opposite with this first sidepiece;

This operating unit has a pair of axle pivot portion of this first sidepiece, and opposite handle portion, a pair of guide groove and action bars that is located in the said guide groove between said axle pivot portion and this handle portion of said axle pivot portion of being articulated in;

This first foot rest; Have a pair of first articulated section of this operating unit, a pair of keeper of said first articulated section one side, first terminal part opposite with said first articulated section and a pair of first pivot part of being located between said first articulated section and this first terminal part of being arranged on of being articulated in, said keeper respectively has a locating slot that can supply this action bars to wear;

This second foot rest; Have a pair of second articulated section of this second sidepiece, second terminal part opposite and a pair of second pivot part of being located between said second articulated section and this second terminal part of being articulated in said second articulated section; Said second pivot part and said first pivot part articulate mutually; When this first foot rest launches with respect to this operating unit; This first terminal part and this second terminal part are away from this carrying framework, and this first foot rest is during with respect to this operating unit folding, and this first terminal part and this second terminal part level off to this carrying framework.

2. but the microscope carrier with folding foot rest as claimed in claim 1; It is characterized in that: the guide groove of this operating unit respectively has first end and the second end opposite with this first end of the said axle of correspondence pivot portion, and this operating unit also has one can make this action bars be positioned at spacing group of this first end.

3. but the microscope carrier with folding foot rest as claimed in claim 2 is characterized in that: spacing group of this operating unit is a pair of elastic component that is connected this action bars, and the elastic force perseverance of said elastic component makes this action bars keep the trend that moves towards this first end.

4. but the microscope carrier with folding foot rest as claimed in claim 3; It is characterized in that: this operating unit also has a mobile jib spare that is the U type; This mobile jib spare has two side levers, and this handle portion is engaged between the said side lever, and said pivot portion is arranged on this mobile jib spare end; It is inner that said elastic component is installed in said side lever, and opposite two ends involve respectively on said axle pivot portion and this action bars.

5. but the microscope carrier with folding foot rest as claimed in claim 1; It is characterized in that: the said locating slot of this first foot rest respectively has a flat segments, an arc section that is engaged on this flat segments one side and is center of rotation with said first articulated section; When this first foot rest launches with respect to this operating unit; This action bars is arranged in said flat segments, and this first foot rest is during with respect to this operating unit folding, and this action bars can be by in said flat segments slide guide to the said arc section.

6. but the microscope carrier with folding foot rest as claimed in claim 5; It is characterized in that: the said locating slot of this first foot rest also respectively has one and is engaged on this arc section one side and the opposite blocking section that is provided with this flat segments; When this first foot rest was located with respect to this operating unit folding, this action bars can be by in said arc section slide guide to the said blocking section.

7. but like each described microscope carrier of claim 1 to 6 with folding foot rest; It is characterized in that: also comprise a lock catch unit; This lock catch unit has a pair of this first foot rest and this second foot rest the two wherein bayonet lock and a pair of buckle that is hubbed on this first foot rest and another person of this second foot rest of of being installed in; Said buckle respectively has ability button hole and pulling part with respect to pairing bayonet lock buckle; When this first foot rest launched with respect to this operating unit, the button hole buckle of said buckle was on said bayonet lock.

8. but the microscope carrier with folding foot rest as claimed in claim 7; It is characterized in that: this second foot rest also has the baffle plate that a pair of and said bayonet lock was provided with and was installed in the said second pivot part opposite side on the contrary; When this first foot rest launched with respect to this operating unit, said baffle plate was resisted against this first foot rest root edge.

9. but the microscope carrier with folding foot rest as claimed in claim 1 is characterized in that: when deployed condition, this carrying framework, this operating unit, this first foot rest and this crus secunda are configured to four-bar linkage structure, and this operating unit is positioned at this carrying framework below.

10. but the microscope carrier with folding foot rest as claimed in claim 9 is characterized in that: when folding state, the end that this operating unit is provided with this handle portion moves to the outside of the first sidepiece along continuous straight runs of this carrying framework outward.

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