CN203880355U - Self-locking foldable lifting device - Google Patents
Self-locking foldable lifting device Download PDFInfo
- Publication number
- CN203880355U CN203880355U CN201420260000.0U CN201420260000U CN203880355U CN 203880355 U CN203880355 U CN 203880355U CN 201420260000 U CN201420260000 U CN 201420260000U CN 203880355 U CN203880355 U CN 203880355U
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- China
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- assembly
- hinge
- connecting rod
- self
- axis hole
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Abstract
A self-locking foldable lifting device comprises a seat, a folding frame and a connection frame used for connection with a load. The seat is hinged to the folding frame through a first hinge shaft, and the folding frame is hinged to the connection frame through a second hinge shaft. The self-locking foldable lifting device is characterized by further comprising a connecting rod component respectively connected with the first hinge shaft and the second hinge shaft, the connecting rod component comprises a first component, a second component and a connecting rod, the first component is fixed onto the first hinge shaft, the second component sleeves the second hinge shaft, the connecting rod is hinged to the first component and the second component, the distance from a hinge point of the connecting rod and the first component to the axis of the first hinge shaft is larger than the distance from a hinge point of the connecting rod and the second component to the axis of the second hinge shaft, and a linkage structure is arranged between the second component and the connection frame. The self-locking foldable lifting device is simple in structure, a self-locking function can be realized only by adding the connecting rod component to an original lifting device, and convenience in operation is achieved.
Description
Technical field
The utility model relates to a kind of device that is used for installing display screen, refers in particular to a kind of folded lifting device with auto-lock function.
Background technique
Computer is commonly used in present office space and place of business, the display screen equipment that is absolutely necessary, the whether suitable working efficiency that affects largely staff of the height that display screen is put, not in place because if base location regulates, staff is easy to fatigue, and working efficiency is low.And the adjustment of display screen high and low position needs lowering or hoisting gear, existing lowering or hoisting gear is divided into the formula of drawing high and collapsible substantially, cuts both ways.These lowering or hoisting gears generally need to rely on display screen (load) own wt to maintain the balance that lift adjustment puts in place, but in the time that this lowering or hoisting gear dispatches from the factory packed and transported, due to the effect of himself spring etc., lowering or hoisting gear board is drawn high or the state of lifting, take volume ratio larger, be unfavorable for saving packaging space, so generally can be provided with limit stoper on lowering or hoisting gear, lowering or hoisting gear is subdued and blocked with limit stoper afterwards, to reduce volume.Current Foldable lift device, does not also have to reach according to self structure the function of self-locking and release.
Model utility content
The utility model provides a kind of Foldable lift device that can self-locking for solving above deficiency.
For reaching the utility model object, this self-locking folded lifting device, comprise pedestal, folding stand and the link press span of using for being connected load, wherein, pedestal and folding stand are hinged by the first hinge, folding stand is hinged by the second hinge and link press span, also comprise and be connected to the first hinge, the link assembly of the second hinge, described link assembly is by the first assembly that is connected in the first hinge, be connected in the second assembly of the second hinge and be articulated with the first assembly, the connecting rod composition of the second assembly, wherein connecting rod and the first member hinges o'clock are o'clock larger from the distance in the second hinge axle center than connecting rod and the second member hinges from the distance in the first hinge axle center, between the second assembly and link press span, be provided with linkage structure.
Preferably, described the first assembly is provided with the first axis hole, and the first hinge and the first axis hole adapt and be through in the first axis hole, and wherein the first axis hole is non-circular.
Preferably, described the first assembly is two disks that are provided with spacing and are fixedly connected with fixed block, and the first axis hole is located in the middle of two disks, the hinge that one of them fixed block is connecting rod.
Preferably, described the second assembly is two disks that are provided with spacing and are fixedly connected with fixed block, and the second axis hole is located in the middle of two disks, the hinge that one of them fixed block is connecting rod.
Preferably, described linkage structure is: the second assembly is provided with the second axis hole, and the second hinge and the second axis hole adapt and be through in the second axis hole, and wherein the second axis hole is non-circular.
Preferably, link assembly has two groups, is divided into the both sides of folding stand.
The utility model is simple in structure, only on original lowering or hoisting gear, adds link assembly and can reach the auto-lock function of this Foldable lift device, easy to operate.
Brief description of the drawings
Fig. 1 is the utility model structure principle chart, and wherein Fig. 1 a is lowering or hoisting gear open mode schematic diagram; Fig. 1 b is callback course schematic diagram; Fig. 1 c reclaims view.
Fig. 2 figure the utility model structural representation.
Fig. 3 is the utility model schematic side view, and wherein Fig. 3 a is open mode schematic diagram; Fig. 3 b is callback course schematic diagram; Fig. 3 c reclaims view.
Fig. 4 is the utility model structure link assembly decomposing schematic representation.
Embodiment
Further illustrate by embodiment below in conjunction with accompanying drawing.
The utility model self-locking folded lifting device comprises pedestal, folding stand and the link press span of using for being connected load, wherein, above link press span for being fixedly connected with display screen even load, folding stand is connected between pedestal and link press span, between them, be respectively and be articulated and connected, between three, can fold activity, each spring assembly that lowering or hoisting gear self is provided with reaches balance in use for reaching display screen etc., be connected in folding stand and three's hinged place, with the not explanation in detail of the incoherent place of self-locking of the present utility model.
The utility model structural principle is shown in Fig. 1, with three kinds of states of Fig. 1 a, Fig. 1 b, Fig. 1 c, the working principle of this self-locking device is described respectively below.In figure, X is the articulating point of pedestal and folding stand, Y is the articulating point of folding stand and link press span, Z is a part for folding stand, C is connecting rod, connecting rod one end and the first member hinges are in A point, the first assembly while and pedestal, folding stand are connected in X, and the connecting rod the other end and the second member hinges are in B point, and the second assembly while and folding stand, connecting base are connected in Y point.So just form one can be movable quadrilateral, visible in figure, X is D to the distance of A, the distance that Y is ordered to B is E, at this moment E is less than D.When lowering or hoisting gear reclaims, while needing falling head, promote B point left, B point, around the rotation of Y point, is shown in Fig. 1 b, the distance between each point is constant.In the time that B point moves to certain state, will there is situation as shown in Fig. 1 c, that is, and B point below connect between X and Y, i.e. the line of AB and XY intersection.Now can continue to limit around the rotation of Y point to B point, can use the hinge itself that Y orders interferes to reach to connecting rod C, be used for limiting the continuation activity again of B point, at this moment there is lowering or hoisting gear to drop to minimum point, at this moment be also lock state, because the cross-shaped state of the line of AB and XY has not been variable quadrilateral, B point is defined again and can not continues to do counterclockwise motion around Y point, is also the object that does not reach lifting if at this moment upwards lifted below connecting base.And the operation of release can only be that return just according to the just now movable former road of track can reality, at this moment can design a structure, B point is forwarded to when the line of AB and XY is not when cross-shaped state clockwise around Y point, be that ABYX is released state when being tetragonal, and this unlocking structure can reach by the interlock of connecting base and the second assembly.To describe with schematic diagram in kind below.
As shown in Figure 2, self-locking folded lifting device comprises the pedestal 10 being hinged together successively, folding stand 20 and the link press span 30 of using for being connected load, wherein, pedestal 10 comprises base 11 and supporting base 12, supporting base 12 and folding stand 20 are hinged by the first hinge 40, be equivalent to above-mentioned X point (lower same), folding stand 20 is hinged with link press span 30 by the second hinge 50, it is Y point, also comprise link assembly 60, link assembly 60 is connected to the first hinge 40, the second hinge 50, link assembly 60 is by the first assembly 61 that is fixed on the first hinge 40, be sheathed on the second assembly 62 of the second hinge 50 and be articulated with the first assembly 61, the connecting rod 63 of the second assembly 62 forms, wherein connecting rod 63 and the first assembly 61 articulating points (A point) are larger from the distance (E) of the second hinge 50 axle center (Y point) than connecting rod 63 and the second assembly 62 articulating points (B point) from the distance (D) of the first hinge 30 axle center (X point), between the second assembly 62 and link press span 30, be provided with linkage structure.
Further illustrate in conjunction with Fig. 3, Fig. 4 below: the first assembly 61 is provided with the first axis hole 611 simultaneously, the first hinge 40 and the first axis hole 611 adapt and are through in the first axis hole 611, wherein the first axis hole 611 is non-circular, as figure, the first axis hole 611 is flat-shaped hole, and object is that the first assembly 61 is along with the first hinge 40 rotates; In the present embodiment, the first assembly 61 is two disks that are provided with spacing and are fixedly connected with fixed block, the first axis hole 611 is located in the middle of two disks, one of them fixed block 612 is the hinge of connecting rod 63, and fixed block 612 is here screw, and corresponding disk is provided with screw 613, correspondingly, hinged place, connecting rod 63 ends is provided with through hole 631 for circular hole, and in other embodiment, fixed block 612 can be also as the object of pin one class.Simultaneously, the second assembly 62 is two disks that are provided with spacing and are fixedly connected with fixed block 622, the second axis hole 621 is located in the middle of two disks, one of them fixed block 622 is the hinge of connecting rod 63, visible in figure, the two ends of this fixed block 622 are square, middle for cylindric be through hole 632 hinged places of connecting rod 63, two disks are provided with square hole 623 corresponding to fixed block 622 two ends, are fixedly connected by welding.Linkage structure is: the second assembly 62 is provided with the second axis hole 621, the second hinges 50 and the second axis hole 621 adapts and is through in the second axis hole 621, and wherein the second axis hole 621 is non-circular.In order to reach balance, can respectively be provided with in the both sides of folding stand 20 one group of link assembly 60.
Self-locking and releasing process below in conjunction with Fig. 3 to this self-locking folded lifting device are described, first with reference to figure 3a and Fig. 2 a, in open mode, need to decline time, press down backward link press span 30, at this moment link press span 30 drives the second assembly 62 to rotate by the second hinged with it hinge 50 and linkage structure, and connecting rod 63 and the second assembly 62 articulating point B also rotate, as Fig. 3 b and Fig. 2 b; Continue to exert pressure downwards, elevator mechanism drops to gradually articulating point B and arrives as the state of Fig. 3 c and Fig. 2 c, at this moment the end of connecting rod 63 and the second hinge 50 are produced and are interfered so that can not decline again, folding stand 20 is also basic horizontal state, link press span 30 is also in level, at this moment the retraction volume of elevator mechanism is minimum, and be in the lock state, while upwards lifting below folding stand 20 and link press span 30, because the end of connecting rod 63 is below the second hinge 50, upwards lift so can not overcome resistance.In the time that needs unlock the same, need to pull forward and upwards link press span 30, make under the effect of linking mechanism, the second assembly 62 turn clockwise (direction herein for reference to the accompanying drawings of, while locking above, sense of rotation is for counterclockwise), at this moment connecting rod 63 and the second assembly 62 articulating point B also rotate and be raised to folding the first hinge 30 and the second hinge 40 lines above, i.e. release completes.
Although specifically shown with reference to above embodiment and described the utility model; but it should be appreciated by those skilled in the art; in the case of not departing from the spirit and scope of the present utility model that claim limits; can carry out the various changes in form and details to it, all belong to the scope of the utility model protection.
Claims (6)
1. a self-locking folded lifting device, comprise pedestal (10), folding stand (20) and the link press span (30) of using for being connected load, wherein, pedestal (10) and folding stand (20) are hinged by the first hinge (40), folding stand (20) is hinged by the second hinge (50) and link press span (30), it is characterized in that, also comprise and be connected to the first hinge (40), the link assembly (60) of the second hinge (50), described link assembly (60) is by the first assembly (61) that is connected in the first hinge (40), be connected in second assembly (62) of the second hinge (50) and be articulated with the first assembly (61), connecting rod (63) composition of the second assembly (62), wherein connecting rod (63) is larger from the distance in the second hinge (50) axle center than connecting rod (63) and the second assembly (62) articulating point from the distance in the first hinge (61) axle center with the first assembly (61) articulating point, between the second assembly (62) and link press span (30), be provided with linkage structure.
2. self-locking folded lifting device according to claim 1, it is characterized in that, described the first assembly (61) is provided with the first axis hole (611), the first hinge (40) adapts and is through in the first axis hole (611) with the first axis hole (611), and wherein the first axis hole (611) is non-circular.
3. self-locking folded lifting device according to claim 2, it is characterized in that, described the first assembly (61) is two disks that are provided with spacing and are fixedly connected with fixed block (612), the first axis hole (611) is located in the middle of two disks, and one of them fixed block (612) is the hinge of connecting rod (63).
4. according to the self-locking folded lifting device described in claim 1 or 2 or 3, it is characterized in that, described the second assembly (62) is two disks that are provided with spacing and are fixedly connected with fixed block (622), the second axis hole (621) is located in the middle of two disks, and one of them fixed block (622) is the hinge of connecting rod (63).
5. self-locking folded lifting device according to claim 4, it is characterized in that, described linkage structure is: the second assembly (62) is provided with the second axis hole (621), the second hinge (50) adapts and is through in the second axis hole (621) with the second axis hole (621), and wherein the second axis hole (621) is non-circular.
6. self-locking folded lifting device according to claim 5, is characterized in that, link assembly (60) has two groups, is divided into the both sides of folding stand (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260000.0U CN203880355U (en) | 2014-05-20 | 2014-05-20 | Self-locking foldable lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260000.0U CN203880355U (en) | 2014-05-20 | 2014-05-20 | Self-locking foldable lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880355U true CN203880355U (en) | 2014-10-15 |
Family
ID=51680850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260000.0U Expired - Fee Related CN203880355U (en) | 2014-05-20 | 2014-05-20 | Self-locking foldable lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880355U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642659A (en) * | 2017-09-13 | 2018-01-30 | 武汉随戈科技服务有限公司 | A kind of fast folding office management video demonstration device support frame |
| CN108092393A (en) * | 2018-01-29 | 2018-05-29 | 安徽机电职业技术学院 | A kind of bus platform solar charging device |
| CN110495709A (en) * | 2019-08-02 | 2019-11-26 | 珠海市润星泰电器有限公司 | A kind of stepless adjustable telescopic device and its application method |
-
2014
- 2014-05-20 CN CN201420260000.0U patent/CN203880355U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642659A (en) * | 2017-09-13 | 2018-01-30 | 武汉随戈科技服务有限公司 | A kind of fast folding office management video demonstration device support frame |
| CN108092393A (en) * | 2018-01-29 | 2018-05-29 | 安徽机电职业技术学院 | A kind of bus platform solar charging device |
| CN110495709A (en) * | 2019-08-02 | 2019-11-26 | 珠海市润星泰电器有限公司 | A kind of stepless adjustable telescopic device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |