TWM595497U - Carrier support structure of vehicle wheelchair lifting device - Google Patents

Abstract

The creative system includes a base, a supporting arm, a linkage, a telescopic device, a connecting rod device and a carrying frame. The linking part pivotally supports the support arm and the base. The support arm can be telescopically linked; the telescopic device pivotally connects the link and the link device, and the carrier pivotally supports the support arm and the link device. When the telescopic device expands and contracts, the carrier is turned over through the connecting rod device. The carrier can be changed between a carrier folding position and a carrier supporting position, and when changing to the carrier supporting position, the first link device The rod and the second rod are in a linear dead-point configuration to increase the structural strength of the carrier. Therefore, this case also has the advantages of dead point configuration design to improve the strength of the support structure, the shortest stroke can be turned over to save space, and the structure is simple and the manufacturing cost is low.

Description

Carriage support structure of vehicle wheelchair lifting device

This creation relates to a platform support structure for a vehicle wheelchair lifting device, in particular to a vehicle wheelchair that has a dead-point configuration design to increase the strength of the support structure, can flip the bearing frame in the shortest stroke to save space, and has a simple structure and low manufacturing cost The supporting structure of the platform of the lifting device.

With the increase in the elderly population and physical disabilities, wheelchairs are used more and more. When these people are to be transported to other places by vehicles, they need to use the "vehicle wheelchair lifting device" to connect the wheelchair and wheelchair. People move into the vehicle (or outside the vehicle). Conventional devices use the action of the cam to turn and fold the stage. When the cam lever meets the dual mechanism, the action of the cam pair causes the stage to turn over, thus completing the folding action (this is known in the related art , Without further details). Known vehicle wheelchair lifting devices and carrier folding mechanisms, such as U.S. Patent Publication No. 20070183880, have folding mechanisms that are too complicated, and the carrier is only supported by structural links, the supporting force is insufficient, and danger is likely to occur. Another traditional vehicle wheelchair lifting device and carrier folding mechanism, such as Republic of China Invention Patent No. I413516, the carrier only bears on the support crossbar under the carrier to carry the weight, which also produces insufficient support force and is prone to danger. . In view of this, it is necessary to develop technology that can solve the above-mentioned conventional shortcomings.

The purpose of this creation is to provide a platform support structure for a wheelchair lift device for vehicles, which has the advantages of dead-point configuration design to improve the strength of the support structure, the shortest stroke can be turned over to save space, and the structure is simple and low in manufacturing cost. In particular, the problem to be solved in this creation lies in the well-known wheelchair lifting device for vehicles and the folding mechanism of the carrier. The folding mechanism is too complicated, and the carrier is only supported by the structural link, the supporting force is insufficient, and it is easy to be dangerous. problem. The technical means to solve the above problem is to provide a support structure for a platform of a wheelchair lifting device for vehicles, which includes: A pair of bases are used for external fixation and have a base height; A lifting device is provided corresponding to the base. The lifting device has a pair of supporting arm parts, two pairs of linkage parts, a pair of driving parts, and a supporting abutting part; each supporting arm part has a height Point pivoting portion, a low point pivoting portion, and a mid-low point pivoting portion; each pair of linking portions is pivotally provided between the corresponding base and the high point pivoting portion; each driving portion It has a first pivot point and a second pivot point, the first pivot point and the second pivot point are pivotally arranged between the corresponding pair of linking parts, and the pair of driving parts are both It is a telescopic structure, and the supporting abutment portion is connected between the pair of supporting arm portions, and is adjacent to the pair of low-point pivoting portions; A pair of telescopic devices are provided corresponding to the lifting device, and each telescopic device is pivotally connected to the corresponding linking portion at one end, and is adjacent to the high point pivoting portion; A pair of link parts corresponding to the support arm and the pair of telescopic devices, each link part includes a first lever, a second lever, a third lever and a fourth lever; Each first pole has a telescopic pivot point, a pivot pivot point and a lower link pivot point; the telescopic pivot point is pivotally connected to the corresponding other end of the telescopic device, the pivot pivot The point is pivotally connected to the corresponding low-point pivot part, the lower link pivot point is pivotally connected to the corresponding lower end of the second rod; each third rod is pivotally connected to the corresponding mid-low point A pivoting portion and one end of the fourth rod, each third rod system has an upper link pivot joint, and an upper end of the second rod is pivotally connected to the corresponding upper link pivot joint; A stage part corresponding to the supporting arm part and the pair of telescopic devices is provided, the stage part includes a bearing frame, a pair of first bearing pivot parts, a pair of second bearing pivot parts and a bearing Abutting portion; the pair of first bearing pivot portions correspond to the low point pivot portions, and are provided on both sides of the bearing frame, and the bearing frame is coaxially pivoted between the pair of low point pivot portions and the The pair of turning pivot joints; the pair of second bearing pivot joints correspond to the fourth rod, and are provided on both sides of the bearing bracket for the bearing bracket to pivotally connect to the other end of the pair of fourth rods. The bearing abutment portion corresponds to support the abutment portion; Thereby, when the pair of driving parts is controlled to expand and contract, the pair of supporting arm parts can be linked through the two pairs of linking parts, so that the pair of supporting arm parts can be moved to at least a link retracted position and a link extended position. One; and when the pair of telescopic devices are controlled to expand and contract, the pair of telescopic devices are linked to the pair of link devices through the pair of telescopic part pivot contacts, and the corresponding first rod is centered on the pivot pivot point Rotate and link the second lever through the lower link pivot point, the second lever is to lower the third lever and the fourth lever through the upper link pivot point, the fourth lever is corresponding to The second bearing pivot portion rotates relative to the bearing frame, the bearing frame is centered on the first bearing pivot portion, and can be rotated to at least one of a bearing frame folding position and a bearing frame bearing position, When moving to the load-carrying position of the carrier, the load-supporting abutment is spanned on the support-abutment, and the third rod and the fourth rod are in a linear dead point configuration to support the load Frame to increase the structural strength of the carrier. It is not difficult to gain an in-depth understanding from the detailed description and drawings of the selected embodiments below for the above purpose and advantages of this creation. The following examples and drawings are used to explain this creation in detail:

See 1A, 1B, 2A, 2B, 2C, 3A, 3B, 3C, 4A, 4B, 4C, 4D, 5A, 5B, 5C, 6A, Figures 6B and 6C, this creation is a supporting structure for a platform of a wheelchair lifting device for vehicles, which includes: A pair of bases 10 are used for external fixation and have a base height H. A lifting device 20 is provided corresponding to the base 10, and the lifting device 20 has a pair of support arm portions 20A, two pairs of linking portions 20B, a pair of driving portions 20C, and a support abutment portion 20D. Each supporting arm portion 20A has a high-point pivoting portion 21, a low-point pivoting portion 22 and a middle-low-point pivoting portion 23. Each pair of linking parts 20B is pivotally arranged between the corresponding base 10 and the high point pivotal part 21; each driving part 20C has a first pivotal point C1 and a second pivotal point C2, the first pivot point C1 and the second pivot point C2 are pivotally disposed between the corresponding pair of linking parts 20B, and the pair of driving parts 20C are all retractable structures, the support is against The portion 20D is connected between the pair of support arm portions 20A, and is adjacent to the pair of low-point pivot portions 22. A pair of telescopic devices 30 are provided corresponding to the lifting device 20, and each telescopic device 30 is pivotally connected to the corresponding linking portion 20B at one end, and is adjacent to the high point pivoting portion 21. A pair of link parts 40 are provided corresponding to the support arm part 20A and the pair of telescopic devices 30, and each link part 40 includes a first rod 41, a second rod 42, and a third rod 43 And a fourth shot 44. Each first rod 41 (as shown in FIG. 4E) has a telescopic pivot point 411, a flip pivot point 412 and a lower link pivot point 413. The telescopic part pivot point 411 is pivotally connected to the corresponding other end of the telescopic device 30, and the flip pivot point 412 is pivotally connected to the corresponding low point pivot part 22. The lower link pivot point 413 is pivotally connected to the lower end of the corresponding second rod 42. Each third rod 43 is pivotally connected to one end of the corresponding mid-low point pivot portion 23 and the fourth rod 44. Each third rod 43 has an upper link pivot point 431, and the upper end of the second rod 42 is pivotally connected to the corresponding upper link pivot point 431. A stage portion 50 is provided corresponding to the support arm portion 20A and the pair of telescopic devices 30. The stage portion 50 includes a carrying frame 51, a pair of first bearing pivot portions 52, and a pair of second bearing The pivoting portion 53 and a bearing abutting portion 54. The pair of first bearing pivot portions 50 correspond to the low point pivot portions 22, and are provided on both sides of the bearing frame 51, and the bearing frame 51 is coaxially pivoted on the pair of low point pivot portions 22 and The pair of flip pivot points 412. The pair of second bearing pivot portions 53 corresponds to the fourth rod 44 and is provided on both sides of the bearing frame 51 for the bearing frame 51 to pivotally connect to the other end of the pair of fourth rods 44. The bearing abutment portion 54 corresponds to support the abutment portion 20D. Thereby, when the pair of driving parts 20C is controlled to expand and contract, the pair of supporting arm parts 20A can be linked through the two pairs of linking parts 20B, so that the pair of supporting arm parts 20A can be moved to at least one link retracting position PA1 (refer to 2A, 2B, and 2C), one of the link deployment positions PA2 (refer to FIGS. 6A, 6B, and 6C). When the pair of telescopic devices 30 are controlled to expand and contract, the pair of telescopic devices 30 links the pair of link devices 40 through the pair of telescopic portion pivot points 411, and the corresponding first rod 41 is connected with the flip pivot point 412 For axis rotation, and the second rod 42 is linked through the lower link pivot point 413, the second rod 42 is used to lower the third rod 43 and the fourth rod 44 through the upper link pivot point 431, The fourth rod 44 rotates relative to the second bearing pivot portion 53 and the bearing frame 51. The bearing frame 51 uses the first bearing pivot portion 52 as an axis, and can rotate at least to a bearing One of the rack folding position PB1 (refer to Figures 2A, 2B, and 2C), and a carrier rack carrying position PB2 (refer to Figures 4C, 4D, 5C, and 6C), and when moved to the carrier In the loading position PB2, the bearing abutment portion 54 straddles the support abutment portion 20D, and the third rod 53 and the fourth rod 54 are in a linear dead point configuration D for supporting the carrier 51. Increasing the structural strength of the carrier 51. In practice, the base 10 is fixed to a rear 91 (for example, the rear body of a well-known Rehabus), and between the rear 91 and a horizontal line (for example, the ground), it has the base height H (as shown in Figure 6C) Shown). Each pair of linking parts 20B has a plurality of links M, which are kept parallel to each other. The first and second pivot points C1 and C2 are respectively pivotally connected between any two corresponding links M, and are respectively adjacent to the base 10 and the high-point pivot portion 21. Thereby, the driving portion 20C is controlled to change between contraction and extension, and the distance between the corresponding plurality of connecting rods M can be controlled to change between decreasing and increasing, and then the corresponding supporting arm portion 20A can be linked to make The pair of support arm portions 20A can be moved to at least one of the link retracted position PA1 (refer to FIGS. 2A, 2B, and 2C), and the link extended position PA2 (refer to FIGS. 6A, 6B, and 6C). By. Each telescopic device 30 includes a fixed portion 31 and a movable portion 32. The fixed portion 31 and the movable portion 32 are relatively telescopic structures. Each fixed portion 31 is pivotally connected to the corresponding telescopic portion pivot point 411, and each movable portion 32 is pivotally connected to the corresponding linkage portion 20B. The part to be specifically explained here is that, referring to FIG. 4E, the first rod 41 can actually be connected by a plurality of rods and welded and fixed into an integrated structure. For example, the first rod 41 includes a front rod 41A and a rear rod 41B. The front rod 41A and the rear rod 41B are welded and fixed to each other to form an integrated structure. The action process of this creation can be briefly described as follows: When the pair of driving parts 20C is controlled to change between contraction and extension, the distance between the corresponding plurality of connecting rods M can be controlled to change between decreasing and increasing, and then the pair of supporting arm parts 20A can be linked to make the corresponding The support arm portion 20A changes from the folded position PA1 (shown in FIG. 2C) to the deployed position PA2 (shown in FIG. 6C). When the extension and contraction of the pair of telescopic devices 30 is controlled to be extended and retracted, the pair of telescopic devices 30 is connected to the pair of link devices 40 through the pivot points 411 of the pair of telescopic parts, and the corresponding first rod 41 is connected with the flip pivot The contact point 412 is pivoted, and the second lever 42 is connected through the lower link pivot point 413, and the second lever 42 is used to lower the third lever 43 and the fourth link through the upper link pivot point 431 Lever 44, the fourth lever 44 rotates relative to the second bearing pivot portion 53 and the bearing frame 51 correspondingly, the bearing frame 51 uses the first bearing pivot portion 52 as the axis, and at least Rotate from the stowed position PB1 (as shown in Figure 2C) to an unfolding position PB3 (as shown in Figure 3C), and then turn to the carrier loading position PB2 (as shown in Figure 5C or 6C (Pictured). The important point is that when the load bearing portion 54 moves to the load bearing position PB2, the load bearing portion 54 straddles the support bearing portion 20D, and the third rod 53 and the fourth rod 54 are The straight-line dead point configuration D is used to support the carrier 51 and increase the structural strength of the carrier 51. Of course, it is possible to return to the original position by controlling the driving part 20C and the telescopic part 30 to operate in reverse. For example, if the pair of telescopic parts 30 is controlled to change from retracted to extended, then the pair of telescopic devices 30 is to couple the pair of link devices 40 through the pair of telescopic part pivot points 411, and the corresponding first rod 41 is The turning pivot point 412 is pivotal, and pushes the second lever 42 through the lower link pivot point 413, and the second lever 42 pushes the third lever through the upper link pivot point 431 43, and then the dead center configuration D of the third rod 43 and the fourth rod 44 is released. The fourth rod 44 rotates relative to the second bearing pivot portion 53 and the bearing frame 51, and then pulls Lifting the carrier 51, the carrier 51 takes the first bearing pivot 52 as the axis, and turns from the bearing position PB2 of the carrier (as shown in FIG. 5C or FIG. 6C) back to the unfolding Position PB3 (as shown in Figure 3C), and then reset to the carrier folding position PB1 (as shown in Figure 2C). The advantages and functions of this creation are as follows: [1] Dead point configuration design improves the strength of the supporting structure. The present invention is provided with a connecting rod device. When the carrying frame is located at the carrying position of the carrying frame, the third rod and the fourth rod are in a linear dead point configuration, which can greatly increase the strength of the supporting structure of the carrying frame. Therefore, the dead point configuration design improves the strength of the support structure. [2] The carrier can be turned over with the shortest stroke to save space. In this creation, a telescopic device and a connecting rod device are provided, so that the carrier can be turned through the connecting rod device at the shortest stroke when the telescopic device is fully telescopic. Therefore, the carrier can be turned over with the shortest stroke to save space. [3] Simple structure and low manufacturing cost. This creation is a combination of a telescopic device and a connecting rod device, all of which are well-known devices and do not require the development cost of new devices. Therefore, the structure is simple and the manufacturing cost is low. The above is only a detailed description of the creation through the preferred embodiment. Any simple modifications and changes made to the embodiment will not deviate from the spirit and scope of the creation.

10: Dock 20: Lifting device 20A: Support arm 20B: Interlocking Department 20C: Driver 20D: Supporting abutment 21: High point pivot 22: Low pivot 23: pivot point 30: Telescopic device 31: fixed part 32: Activity Department 40: connecting rod device 41: first shot 411: Telescopic joint pivot 412: Flip pivot point 413: Lower link pivot point 41A: Front lever 41B: Rear lever 42: second shot 43: third shot 431: Upper link pivot point 44: fourth shot 50: Carriage Department 51: Carrier 52: The first bearing pivot 53: Second bearing pivot 54: bearing abutment 91: Rear D: Dead center configuration H: base height C1: The first pivot point C2: Second pivot point M: connecting rod PA1: connecting rod folding position PA2: connecting rod extended position PB1: Carrier folding position PB2: Carrying position of carrier PB3: Expanding position

Figure 1A is an exploded view of this creation Figure 1B is a schematic diagram from other angles of Figure 1A Figure 2A is a schematic diagram of the high point contraction of this creation Figure 2B is a schematic diagram from other angles of Figure 2A Figure 2C is a schematic diagram of the plane of Figure 2A Figure 3A is a schematic diagram of one of the stretching processes of this creation Figure 3B is a schematic view of Figure 3A from other angles Figure 3C is a schematic diagram of the plane of Figure 3A Figure 4A is a schematic diagram of the second stretching process of this creation Figure 4B is a schematic diagram of other angles of Figure 4A Figure 4C is a schematic diagram of the plane of Figure 4A Figure 4D is a partially enlarged schematic view of Figure 4C Figure 4E is a schematic diagram of the other structure of Figure 4E from other angles Figure 5A is a schematic diagram of the third stretching process of this creation Figure 5B is a schematic diagram of other angles of Figure 5A Figure 5C is a schematic diagram of the plane of Figure 5A Figure 6A is a schematic diagram of the low-point stretch bearing of this creation Figure 6B is a schematic diagram from other angles of Figure 6A Figure 6C is a schematic diagram of the plane of Figure 6A

20: Lifting device

20A: Support arm

20D: Supporting abutment

22: Low pivot

23: pivot point

30: Telescopic device

31: fixed part

40: connecting rod device

41: first shot

411: Telescopic joint pivot

412: Flip pivot point

413: Lower link pivot point

41A: Front lever

41B: Rear lever

42: second shot

43: third shot

431: Upper link pivot point

44: fourth shot

50: Carriage Department

51: Carrier

52: The first bearing pivot

53: Second bearing pivot

54: bearing abutment

D: Dead center configuration

PA2: connecting rod extended position

PB2: Carrying position of carrier

Claims (5)

Carriage support structure of vehicle wheelchair lifting device, including: A pair of bases are used for external fixation and have a base height; A lifting device is provided corresponding to the base. The lifting device has a pair of supporting arm parts, two pairs of linkage parts, a pair of driving parts, and a supporting abutting part; each supporting arm part has a height Point pivoting portion, a low point pivoting portion, and a mid-low point pivoting portion; each pair of linking portions is pivotally provided between the corresponding base and the high point pivoting portion; each driving portion It has a first pivot point and a second pivot point, the first pivot point and the second pivot point are pivotally arranged between the corresponding pair of linking parts, and the pair of driving parts are both It is a telescopic structure, and the supporting abutment portion is connected between the pair of supporting arm portions, and is adjacent to the pair of low-point pivoting portions; A pair of telescopic devices are provided corresponding to the lifting device, and each telescopic device is pivotally connected to the corresponding linking portion at one end, and is adjacent to the high point pivoting portion; A pair of link parts corresponding to the support arm and the pair of telescopic devices, each link part includes a first lever, a second lever, a third lever and a fourth lever; Each first pole has a telescopic pivot point, a pivot pivot point and a lower link pivot point; the telescopic pivot point is pivotally connected to the corresponding other end of the telescopic device, the pivot pivot The point is pivotally connected to the corresponding low-point pivot part, the lower link pivot point is pivotally connected to the corresponding lower end of the second rod; each third rod is pivotally connected to the corresponding mid-low point A pivoting portion and one end of the fourth rod, each third rod system has an upper link pivot joint, and an upper end of the second rod is pivotally connected to the corresponding upper link pivot joint; A stage part corresponding to the supporting arm part and the pair of telescopic devices is provided, the stage part includes a bearing frame, a pair of first bearing pivot parts, a pair of second bearing pivot parts and a bearing Abutting portion; the pair of first bearing pivot portions correspond to the low point pivot portions, and are provided on both sides of the bearing frame, and the bearing frame is coaxially pivoted between the pair of low point pivot portions and the The pair of turning pivot joints; the pair of second bearing pivot joints correspond to the fourth rod, and are provided on both sides of the bearing bracket for the bearing bracket to pivotally connect to the other end of the pair of fourth rods. The bearing abutment portion corresponds to support the abutment portion; Thereby, when the pair of driving parts is controlled to expand and contract, the pair of supporting arm parts can be linked through the two pairs of linking parts, so that the pair of supporting arm parts can be moved to at least a link retracted position and a link extended position. One; and when the pair of telescopic devices are controlled to expand and contract, the pair of telescopic devices are linked to the pair of link devices through the pair of telescopic part pivot contacts, and the corresponding first rod is centered on the pivot pivot point Rotate and link the second lever through the lower link pivot point, the second lever is to lower the third lever and the fourth lever through the upper link pivot point, the fourth lever is corresponding to The second bearing pivot portion rotates relative to the bearing frame, the bearing frame is centered on the first bearing pivot portion, and can be rotated to at least one of a bearing frame folding position and a bearing frame bearing position, When moving to the load-carrying position of the carrier, the load-supporting abutment is spanned on the support-abutment, and the third rod and the fourth rod are in a linear dead point configuration to support the load Frame to increase the structural strength of the carrier. The platform support structure of the wheelchair lifting device for a vehicle as described in claim 1, wherein the base is used to be fixed to a rear of the vehicle, and the height of the base is between the rear of the vehicle and the horizontal line. Carrier support structure of the wheelchair lifting device for vehicles as described in claim 1, wherein: Each pair of linkages has a plurality of links, and the plurality of links are kept parallel to each other; The first and second pivot points are respectively pivotally connected between any corresponding two connecting rods, and are respectively adjacent to the base and the pivot point of the high point; Thereby, the driving part is controlled to change between contraction and extension, and the distance between the corresponding plurality of connecting rods can be controlled to change between decreasing and increasing, and then the corresponding supporting arm part can be linked to make the pair of supports The arm can be moved to at least one of the link retracted position and the link extended position. Carrier support structure of the wheelchair lifting device for vehicles as described in claim 1, wherein: Each telescopic device includes a fixed part and a movable part; The fixed part and the movable part are relatively telescopic structures, each fixed part is pivotally connected to the corresponding pivot point of the telescopic part, and each movable part is pivotally connected to the corresponding linkage part. The platform support structure of the wheelchair lifting device for a vehicle as described in claim 1, wherein the first rod system includes a front rod and a rear rod, and the front rod and the rear rod are fixed into an integrated structure.

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