WO2023000434A1 - 支撑支架以及应用该支架的扶手 - Google Patents

支撑支架以及应用该支架的扶手 Download PDF

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Publication number
WO2023000434A1
WO2023000434A1 PCT/CN2021/114646 CN2021114646W WO2023000434A1 WO 2023000434 A1 WO2023000434 A1 WO 2023000434A1 CN 2021114646 W CN2021114646 W CN 2021114646W WO 2023000434 A1 WO2023000434 A1 WO 2023000434A1
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WO
WIPO (PCT)
Prior art keywords
block
load
groove wall
support
support bracket
Prior art date
Application number
PCT/CN2021/114646
Other languages
English (en)
French (fr)
Inventor
阮柳健
赵勇
胡兆祥
徐明宇
刘新波
伍希志
Original Assignee
中山小神童创新科技有限公司
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Application filed by 中山小神童创新科技有限公司 filed Critical 中山小神童创新科技有限公司
Publication of WO2023000434A1 publication Critical patent/WO2023000434A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet

Definitions

  • the invention relates to the technical field of brackets, in particular to a support bracket and an armrest using the bracket.
  • the foldable structure has been widely used in homes, daily utensils and supporting brackets due to its advantages of being easy to store and not occupying a large space.
  • the foldable support bracket is generally applicable and installed on folding tables, support platforms of various equipment, and armrest structures of various seats.
  • the existing foldable brackets have a variety of folding methods, but generally only have a one-way locking function, such as the foldable armrest on the seat, the armrest can be rotated from top to bottom to a horizontal state as a whole, and then locked by a single structure. Locking in the opposite direction, the armrest is restricted to continue to rotate downward. At this time, the armrest has a supporting function, but when the armrest is forced upward, it does not have a locking function, and the armrest will rotate upward under the action of the force.
  • This type of structure only has a one-way lock.
  • the compact function the overall folding switching operation is more flexible, but the use stability is poor.
  • Another example is the armrest structure applied to the auxiliary seat, which can be divided into folding type and fixed type in terms of usage.
  • the purpose of the embodiments of the present invention is to provide a support bracket and an armrest using the bracket, which have the advantages of high stability and easy folding.
  • an embodiment of the present invention provides a support bracket, including a first mounting part and a second mounting part, and also includes a load-bearing part and a supporting part;
  • the bearing member is rotatably connected to the first mounting member
  • One end of the support member is rotatably connected to the load-bearing member, and the other end is provided with a block;
  • a clamping structure is provided on the second mounting part, and the clamping structure is used for clamping the clamping block.
  • the existing foldable supports generally only have the one-way locking function, and their load-bearing effect is relatively stable, but when the load-bearing platform is subjected to a vertical upward pulling force, the setting of the one-way locking cannot support the pulling force. Restrictions will cause the load-bearing parts to vibrate under the action of tension. If the tension is strong, the load-bearing parts will even turn upside down and become unstable. The overall use stability is poor and there is a safety risk.
  • the support bracket provided by the solution can achieve a stable two-way locking effect through the ingenious limit structure setting of the clamping block and the clamping groove, and its overall use stability is extremely strong. The strength required for the card output block is not high. With such a structural setting, the support bracket can obtain extremely convenient detachability without sacrificing the stability of use, and its overall practicability is extremely strong.
  • the clamping structure includes a clamping slot corresponding to the clamping block, into which the clamping block sinks;
  • the card slot includes a slot holder for supporting the card block, a top groove wall for restricting the card block from moving up, and a notch for the card block to be pulled out of the card slot.
  • the bottom groove wall is extended from the bottom groove wall, and the bottom groove wall and the top groove wall extend outward to form the groove opening.
  • the load-bearing member when the clamping block falls into the clamping groove, the load-bearing member is in a load-bearing state, the support member forms a first angle with the wall of the bottom groove, and the support member and the top groove The walls form a second included angle, and when the first included angle and the second included angle are respectively within the corresponding preset angle ranges, through the bottom groove wall and/or the top groove wall and the The friction force between the blocks restricts the blocks from breaking away from the slot.
  • the second included angle is smaller than or equal to the first included angle.
  • the values of the first included angle and the second included angle are both 90°.
  • the walls of the bottom groove and the walls of the top groove are arranged parallel to each other.
  • the clamping block and the wall of the bottom groove and/or the wall of the top groove are arranged in a clearance fit or an interference fit or a transition fit.
  • the block is arranged in the shape of an axis, and the rotation axis of the support member and the bearing member is parallel to the axis of the block;
  • the clamping block When the clamping block is inserted into the clamping slot, the clamping block fits the slot support and is tangent to the wall of the top slot.
  • the axial direction of the clamping block is perpendicular to the surface of the support member.
  • the clamping block includes a rubber sleeve forming the outer edge contact surface.
  • the load-bearing part includes a load-bearing platform and a mounting link, and the end of the mounting link is rotatably connected to the first mounting part.
  • the load-bearing platform is integrated with the installation link.
  • the support member includes a support link, and one end of the support link is hinged to the bottom of the bearing platform.
  • the load-bearing member when the load-bearing member is in a load-bearing state, the load-bearing member is arranged horizontally.
  • a damper is provided at the rotational connection between the load-bearing member and the first mounting member, and a damper is also provided at the rotational connection between the support member and the load-bearing member.
  • the present invention also provides an armrest, which includes the support bracket described in the above solution, and also includes an armrest pad, and the armrest pad is fixedly arranged on the load-bearing member.
  • the handrail has a two-way locking function, and the overall use stability is extremely strong. Furthermore, the disassembly process of the armrest is extremely simple, and the folding and switching operation is relatively flexible. Even users with limited mobility can operate it alone, which highlights the advantages of the armrest's stability in use and easy folding.
  • the clamping block is arranged in the shape of a shaft, the hinge axis of the support member and the load-bearing member is parallel to the axial direction of the clamping block, and the walls of the bottom groove and the top groove are aligned with the clamping block Tangent, so when the clamping block sinks into the slot support, the slot support and the clamping block are in a fit shape, and the overall force supporting effect is better;
  • the rubber sleeve is set in a transition fit with the top groove wall and the bottom groove wall.
  • the characteristics of the transition fit may have gaps or interference.
  • the resulting gap and interference are generally small, and are mainly used for relatively static connections that require precise positioning and easy disassembly, and realize the positioning connection between the rubber sleeve and the card slot that is easy to disassemble and assemble, and its stability and flexibility are higher;
  • the setting of the damper can provide resistance to reduce the rotational torque of the structure. Its principle is a device that consumes motion energy. When it is necessary to switch the use state of the support bracket to the storage state, manually remove the block from the slot and support The bracket as a whole can hover at any angle, so when storing the support bracket, it is very convenient for the operator to adjust the angle of the support bracket adaptively, and its storage stability also has high stability, which further improves the support bracket. overall usability;
  • the overall disassembly process of the card block is extremely simple, the overall folding and switching operation is relatively flexible, and it has the advantages of high stability in use and simple folding method.
  • Fig. 1 is a specific structural schematic diagram of a support bracket in an embodiment of the present invention
  • Fig. 2 is a schematic diagram of the specific structure of the card slot in an embodiment of the present invention.
  • Fig. 3 is a schematic diagram of force analysis of the block and the wall of the bottom groove in an embodiment of the present invention
  • Fig. 4 is a schematic diagram of force analysis of the block and the wall of the top groove in an embodiment of the present invention.
  • Fig. 5 is a schematic structural view of a seat in an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of force analysis of the block and the wall of the bottom groove in another embodiment of the present invention.
  • Fig. 7 is a schematic diagram of force analysis of the block and the wall of the top groove in another embodiment of the present invention.
  • Fig. 1 is a schematic diagram of the specific structure of the support bracket 10 in an embodiment of the present invention
  • Fig. 2 is a schematic diagram of the specific structure of the card slot in an embodiment of the present invention.
  • a support bracket 10 includes a first mounting part 101 and a second mounting part 102 for mounting and fixing.
  • the support bracket 10 also includes a bearing part 103 and a supporting part 104 .
  • the bearing member 103 is rotationally connected with the first mounting member 101; one end of the supporting member 104 is hinged with the bearing member 103, and a locking block 1041 protrudes from the side of the other end.
  • the whole support bracket 10 is an additional component, and the support bracket 10 can be installed and fixed on the required equipment or structure through the first mounting part 101 and the second mounting part 102 according to actual needs.
  • the connection method can be welding or screw connection, which will not be further limited here.
  • the load-bearing member 103 includes an integrated load-bearing platform 1031 and an installation link 1032 , one end of the installation link 1032 is fixed to the bearing platform 1031 , and the other end is rotatably connected to the first installation member 101 .
  • the support member 104 includes a support link 1042, one end of which is hinged to the bottom of the load-bearing platform 1031.
  • the hinged end of the support link 1042 is located in the middle of the load-bearing platform 1031. Therefore, the load-bearing part 103 can rotate 360 degrees around the first mounting part 101 as a whole, and the supporting link 1042 can rotate around the hinge point relative to the load-bearing part 103 as a whole.
  • the second mounting part 102 is provided with a card slot 105 corresponding to the card block 1041 and for the card block 1041 to snap into.
  • the card slot 105 includes a slot bracket 1051 supporting the card block 1041 and a top groove wall 1052 that restricts the card block 1041 from moving upward.
  • the notch 1053 for the clamping block 1041 to be pulled out from the clamping slot 105 wherein, in this embodiment, the notch 1053 is inclined upwards, and the slot support 1051 is located at the bottom of the clamping slot 105 .
  • the load-bearing member 103 when the clamping block 1041 is clamped into the clamping slot 105, the load-bearing member 103 is in a load-bearing state.
  • the load-bearing platform 1031 on the load-bearing member 103 when the load-bearing member 103 is in the load-bearing state, the load-bearing platform 1031 on the load-bearing member 103 is set horizontally, and the weight carried by the load-bearing member 103 is transmitted to the block 1041 through the support link 1042, and then the slot support 1051 is paired.
  • the block 1041 plays the role of load bearing.
  • the slot support 1051 is extended with a bottom slot wall 1054, and the bottom slot wall 1054 and the top slot wall 1052 are parallel to each other, and both extend away from the slot bracket 1051 to form a block 1041 to enter Or break away from the notch 1053 of the card slot 105 .
  • the support link 1042 forms a first angle 106 with the top groove wall 1052 or the bottom groove wall 1054, and the first angle 106 is within a preset angle range.
  • the preset angle range of the first included angle 106 is 70°-110°.
  • the bottom groove wall 1054 and the top groove wall 1052 restrict the locking block 1041 from detaching from the locking groove 105 through the friction generated by the locking block 1041 .
  • the slot support 1051 bears the overall load on the block 1041, the top of the block 1041 abuts against the top groove wall 1052, and the direction of the notch 1053 is away from the hinge point of the support 104.
  • the first installation 101, the second mounting part 102 and the hinge point of the supporting link 1042 form a triangle, and because the first mounting part 101 has been fixed to form the first fixed point, so the clamping block 1041 is inserted into the clamping groove 105 and in the When the second fixed point is formed under the action of friction force, a stable triangular structure can be formed.
  • the support bracket 10 is installed on the required equipment as a whole through the first mounting part 101 and the second mounting part 102, wherein the first mounting part 101 is located above the second mounting part 102, and the lower Facing the overall stress situation of the block 1041 and the load-bearing member 103 for further analysis:
  • Bearing member 103 is stressed in the horizontal direction:
  • the load-bearing member 103 When the clamping block 1041 is snapped into the slot support 1051, the load-bearing member 103 is in a load-bearing state as a whole, the load-bearing platform 1031 is horizontally arranged, and the load-bearing platform 1031 is on the same level as the first mounting part 101. At this time, the force in the horizontal direction will directly Acting on the first mounting part 101 , and because the connection between the first mounting part 101 and the equipment is a rigid connection, the force in the horizontal direction will not be able to shake the load-bearing part 103 .
  • Bearing member 103 is subjected to downward force:
  • FIG. 3 is a schematic diagram of force analysis of the clamping block 1041 and the bottom groove wall 1054 in an embodiment of the present invention.
  • the slot bracket 1051 plays a role of supporting the supporting link 1042, so the downward pressure acting on the load-bearing platform 1031 will directly act on the bottom tank wall 1054 and the slot bracket through the clamping block 1041 1051, and the force direction is the length direction of the supporting link 1042.
  • the pressure on the bottom groove wall 1054 and the groove support 1051 is the weight G of the block 1041 itself and the load bearing capacity of the block 1041.
  • the total force wherein the load-bearing force is the sum of the respective gravity of the support link 1042 and the load-bearing member 103 plus the downward force on the load-bearing member 103.
  • the load-bearing force acting on the block 1041 will be decomposed into two components under the influence of the first included angle, which are perpendicular to the bottom groove wall 1054
  • the pressure and the thrust parallel to the bottom groove wall 1054 drive the clamping block 1041 to slide out of the clamping groove 105.
  • the thrust will be less than the pressure.
  • the generated frictional force, so the resultant force combined by the load-bearing force of the block 1041 and its own gravity G of the block 1041 will drive the block 1041 to slide downward in the slot 105;
  • the first included angle 106 is equal to 90°, the direction of the load-bearing force acting on the block 1041 is perpendicular to the bottom groove wall 1054, so the load-bearing force is the pressure of the block 1041 on the bottom groove wall 1054, and the block 1041 lacks Parallel to the wall 1054 of the bottom groove, the pushing force that drives the clamping block 1041 to slide out of the clamping slot 105, at this time, the resultant force of the combination of the load-bearing force on the clamping block 1041 and the gravity G of the clamping block 1041 will drive the clamping block 1041 inward in the clamping slot 105 slide down;
  • the load-bearing force acting on the block 1041 will be decomposed into two components under the influence of the first included angle 106, which are perpendicular to the bottom groove wall 1054
  • the pressure and the thrust parallel to the bottom groove wall 1054 to drive the block 1041 to slide downward, at this time, the resultant force of the combination of the load-bearing force on the block 1041 and its own gravity G will drive the block 1041 downward in the slot 105 slide.
  • Bearing member 103 is subject to upward pulling force:
  • FIG. 4 is a schematic diagram of force analysis of the block 1041 and the top groove wall 1052 in an embodiment of the present invention.
  • the pulling force acting on the load-bearing platform 1031 will directly act on the top groove wall 1052 and the groove support 1051 through the clamping block 1041, and the direction of the force is the length direction of the supporting link 1042.
  • the preset angle there will be The following three stress situations:
  • the pulling force acting on the block 1041 will be decomposed into two components under the influence of the first included angle, which are perpendicular to the top groove wall 1052
  • the pressure and the thrust parallel to the top groove wall 1052 drive the block 1041 to slide downward.
  • the resultant force of the combination of the pulling force on the block 1041 and the gravity G of the block 1041 will drive the block 1041 inward in the slot 105. slide down;
  • the direction of the pulling force acting on the block 1041 is perpendicular to the wall 1052 of the top groove, so the pulling force is the pressure of the block 1041 on the wall 1052 of the top groove, and the block 1041 lacks contact with the top groove
  • the wall 1052 is parallel to the pushing force that drives the block 1041 to slide out of the slot 105.
  • the resultant force combined by the pulling force on the block 1041 and the gravity G of the block 1041 will drive the block 1041 to slide downward in the slot 105;
  • the pulling force acting on the block 1041 will be decomposed into two components under the influence of the first included angle 106, which are the pressure perpendicular to the top groove wall 1052 And the thrust parallel to the top groove wall 1052 that drives the clamping block 1041 to slide out of the clamping groove 105.
  • the thrust is smaller than that produced by the pressure Frictional force, so the resultant force of the pulling force on the block 1041 and the gravity G of the block 1041 will drive the block 1041 to slide down in the slot 105 .
  • the load-bearing member 103 when the load-bearing member 103 is subjected to an upward pulling force, the resultant force on the block 1041 is the thrust that drives the block 1041 to slide downward in the slot 105, and the friction between the top groove wall 1052 and the block 1041 limits the block. 1041 disengages from the card slot 105 .
  • the resultant force on the clamping block 1041 is the thrust that drives the clamping block 1041 to slide downward in the clamping groove 105, the bottom groove wall 1054 and the top groove wall 1052 pass through the friction force generated by the clamping block 1041 to limit the clamping force.
  • Block 1041 disengages from card slot 105 .
  • the value of the first included angle 106 is preferably 90°.
  • the supporting member 104 is rotated to be stacked parallel to the load-bearing member 103 as a whole.
  • the support bracket 10 is folded as a whole, and then the load-bearing member 103 is rotated to make the support bracket 10 as a whole conform to the outline of the equipment.
  • This state is the storage state of the support bracket 10 .
  • the switching of the use state of the support bracket 10 is further refined as follows:
  • the existing foldable supports generally only have a one-way locking function, and its load-bearing effect is relatively stable, but when the load-bearing platform 1031 is subjected to a vertical upward pulling force, the one-way locking setting cannot The tension is limited, causing the load-bearing platform 1031 to vibrate under the action of the tension. If the tension is strong, the load-bearing platform 1031 may even turn upside down. The overall stability of the load-bearing platform 1031 is poor, and there is a safety risk , and the support bracket 10 provided by this solution is set through the ingenious limiting structure of the block 1041 and the slot 105.
  • the support bracket 10 When using the support bracket 10, no matter which direction the load-bearing member 103 is subjected to external force, its vertical direction The component force will be transmitted to the clamping block 1041 through the support member 104. Under the limiting and fixing action of the clamping block 1041 and the clamping groove 105, the support bracket 10 can achieve a stable two-way locking effect, and its overall use stability is extremely high. Strong, in addition, the overall disassembly process of the clamping block 1041 is extremely simple, and the force required to pull out the clamping block 1041 is not large. With such a structural setting, the support bracket 10 can be obtained very conveniently without sacrificing the stability of use. Excellent detachable performance, its overall practicability is extremely strong, and it has excellent market competitiveness.
  • the clamping block 1041 in order to optimize the overall supporting effect of the clamping block 1041 and the slot bracket 1051, is arranged in the shape of an axis, and the hinge axis of the support member 104 and the load-bearing member 103 is consistent with that of the clamping block 1041.
  • the axial direction is parallel, the axial direction of the block 1041 is perpendicular to the surface of the support 104, the bottom groove wall 1054 and the top groove wall 1052 are tangent to the block 1041, so when the block 1041 sinks into the slot holder 1051, the slot holder 1051 It fits closely with the clamping block 1041, and its overall force bearing effect is better.
  • the clamping block 1041 includes a rubber sleeve 1043 forming an outer edge contact surface.
  • the friction coefficient formed by the rubber sleeve 1043 and the top groove wall 1052 and the bottom groove wall 1054 is relatively high, so when the clamping block 1041 sinks into the groove support 1051, the friction coefficient between the clamping block 1041 and the bottom groove wall 1054 and the top groove wall will be relatively high.
  • the frictional force generated by 1052 will be greater, so that the limiting effect of the clamping block 1041 and the clamping groove 105 will be more stable, further improving the use stability of the support bracket 10 .
  • the rubber sleeve 1043 and the slot 105 are arranged in a transitional fit.
  • the support bracket 10 when used normally, if there is a gap in the cooperation between the block 1041 and the slot 105, when the block 1041 is subjected to an upward pulling force, the entire block 1041 will be formed in the gap. Shifting action, the shifting action will shake the entire bearing platform 1031, so in order to avoid shaking of the bearing platform 1031 during use, it is necessary to further limit the cooperation between the block 1041 and the slot 105, the rubber sleeve 1043 It can be arranged with the top groove wall 1052 and the bottom groove wall 1054 in clearance fit, transition fit or interference fit. The sleeve 1043 is arranged in a transition fit with the top groove wall 1052 and the bottom groove wall 1054.
  • the characteristics of the transition fit may have a gap or an interference, but the resulting gap and interference are generally small and are mainly used for Accurate positioning requires a relatively static connection that is easy to disassemble, and the positioning connection between the rubber sleeve 1043 and the card slot 105 is easy to disassemble and assemble, and its stability and flexibility are high.
  • a damper is provided at the rotational connection between the bearing member 103 and the first mounting member 101 and at the hinge joint between the supporting member 104 and the bearing member 103 .
  • the setting of the damper can provide resistance to deplete the rotational torque of the structure, and its principle is a device for consuming motion energy.
  • the support bracket 10 When it is necessary to switch the use state of the support bracket 10 to the storage state, manually disengage the clamping block 1041 After the card slot 105, the support bracket 10 as a whole can hover at any angle, so when the support bracket 10 is stored, it is very convenient for the operator to adjust the angle of the support bracket 10 adaptively, and its storage stability is also high, further improving Improve the overall practicality of the support bracket 10.
  • the support bracket 10 is applied to a stage mounted on a wall, wherein the first mounting part 101 and the second mounting part 102 are fixed on the wall by screws, and the first mounting part 101 is located at Above the second mounting part 102 , a desktop is fixedly arranged on the bearing platform 1031 .
  • the load-bearing member 103, the support member 104, and the desktop can be fixed on the wall in a folded storage state by adjusting the load-bearing member 103 and the support member 104.
  • the body is very small, and its effect of easy storage is more prominent.
  • the stage can realize a stable Two-way locking effect, the overall use stability is extremely strong.
  • the disassembly process of the block 1041 is extremely simple, and the overall folding and switching operation is relatively flexible. Compared with the existing folding stage, it has high use stability. , and the advantages of easy folding.
  • FIG. 5 is a schematic structural view of a seat in an embodiment of the present invention.
  • the present invention also provides a handrail.
  • the support bracket 10 is applied to the handrail of the stair climbing machine seat.
  • Two groups of support brackets 10 are arranged symmetrically on the seat. Both sides, wherein, the first mounting part 101 and the second mounting part 102 are all fixedly installed on the side of the seat by screws, the first mounting part 101 is located above the second mounting part 102, and an armrest pad 107 is fixedly arranged on the load-bearing platform 1031 .
  • the load-bearing member 103, the support member 104 and the armrest pad 107 can be fixed on the seat in a folded storage state by adjusting the load-bearing member 103 and the support member 104.
  • the body is very small, and its effect of easy storage is more prominent.
  • the armrest needs to be unfolded for use, just turn the load-bearing member 103 to a horizontal state, and then turn the support member 104 so that the locking block 1041 on the support member 104 sinks into the slot support 1051.
  • the overall disassembly operation is very simple.
  • the stair climbing machine seats are generally suitable for users with inconvenient mobility, it is necessary for this type of auxiliary equipment to have high equipment stability.
  • the seat When climbing stairs, the seat will vibrate normally during the operation process, and the user will feel nervous or even panic when facing the normal jitter of the seat in the early stage of use. At this time, the user will hold or even press the armrest pad 107 tightly , because the second mounting part 102 is rigidly fixed as a whole, the slot bracket 1051 can achieve a better supporting effect on the clamping block 1041 and the supporting part 104 as a whole, and its stability is better.
  • the armrest structure can realize a stable Two-way locking effect, its overall use stability is extremely strong.
  • the overall disassembly process of the handrail is extremely simple.
  • the support bracket 10 When it is necessary to switch the support bracket 10 from the use state to the storage state, only the support link 1042 needs to be operated, and the support link 1042 is held to drive the block 1041 to be pulled out from the notch 1053.
  • the friction force generated by it is relatively small, even if the user of the seat is inconvenient Users can easily pull out the locking block 1041 from the locking slot 105 .
  • users need to use the stair climbing machine seat, they generally need to transfer from the normal seat or bed to the stair climbing machine seat.
  • FIG. 1 is a schematic diagram of the specific structure of the support bracket 10 in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the specific structure of the card slot in an embodiment of the present invention.
  • the present embodiment provides a support bracket 10 , including a first mounting part 101 and a second mounting part 102 for mounting and fixing.
  • the support bracket 10 also includes a bearing part 103 and a supporting part 104 .
  • the bearing member 103 is rotationally connected with the first mounting member 101; one end of the supporting member 104 is hinged with the bearing member 103, and a locking block 1041 protrudes from the side of the other end.
  • the whole support bracket 10 is an additional component, and the support bracket 10 can be installed and fixed on the required equipment or structure through the first mounting part 101 and the second mounting part 102 according to actual needs.
  • the connection method can be welding or screw connection, which will not be further limited here.
  • the load-bearing member 103 includes an integrated load-bearing platform 1031 and an installation link 1032 , one end of the installation link 1032 is fixed to the bearing platform 1031 , and the other end is rotatably connected to the first installation member 101 .
  • the support member 104 includes a support link 1042, one end of which is hinged to the bottom of the load-bearing platform 1031.
  • the hinged end of the support link 1042 is located in the middle of the load-bearing platform 1031. Therefore, the load-bearing part 103 can rotate 360 degrees around the first mounting part 101 as a whole, and the supporting link 1042 can rotate around the hinge point relative to the load-bearing part 103 as a whole.
  • the second mounting part 102 is provided with a card slot 105 corresponding to the card block 1041 and for the card block 1041 to snap into.
  • the card slot 105 includes a slot bracket 1051 supporting the card block 1041 and a top groove wall 1052 that restricts the card block 1041 from moving upward.
  • the notch 1053 for the clamping block 1041 to be pulled out from the clamping slot 105 wherein, in this embodiment, the notch 1053 is inclined upwards, and the slot support 1051 is located at the bottom of the clamping slot 105 .
  • the load-bearing member 103 when the clamping block 1041 is clamped into the clamping slot 105, the load-bearing member 103 is in a load-bearing state.
  • the load-bearing platform 1031 on the load-bearing member 103 when the load-bearing member 103 is in the load-bearing state, the load-bearing platform 1031 on the load-bearing member 103 is horizontal, and the weight carried by the load-bearing member 103 is transmitted to the block 1041 through the support link 1042, and then the slot support 1051 is paired.
  • the block 1041 plays the role of load bearing.
  • the slot bracket 1051 is extended with a bottom slot wall 1054, and both the top slot wall 1052 and the bottom slot wall 1054 extend away from the slot bracket 1051 to form a locking block 1041 to enter or disengage from the slot. Notch 1053 of slot 105 .
  • the support link 1042 forms a first included angle 106 with the bottom slot wall 1054, and the support link 1042 forms a first angle 106 with the top slot wall 1052.
  • the two included angles 108 it should be noted that, when the first included angle 106 and the second included angle 108 are respectively within the corresponding preset angle range, the locking groove 105 will pass through the bottom according to the direction of the external force received by the locking block 1041.
  • the friction force generated by the groove wall 1054 or the top groove wall 1052 and the locking block 1041 restricts the locking block 1041 from breaking away from the locking groove 105 .
  • the slot support 1051 bears the overall load on the block 1041, the block 1041 abuts against the bottom groove wall 1054, and the direction of the notch 1053 is away from the hinge point of the support member 104. At this time, the first mounting member 101.
  • the hinge point between the second mounting part 102 and the supporting link 1042 forms a triangle, and because the first mounting part 101 has been fixed to form the first fixed point, the clamping block 1041 is inserted into the clamping groove 105 and frictionally When the second fixed point is formed under the action of force, a stable triangular structure can be completed.
  • the whole support bracket 10 is installed on the required equipment through the first installation part 101 and the second installation part 102 , wherein the first installation part 101 is located above the second installation part 102 . Further analysis is made on the overall stress situation of the block 1041 and the load-bearing member 103 as follows:
  • Load-bearing member 103 is stressed in the horizontal direction:
  • the load-bearing member 103 is in a load-bearing state as a whole, the load-bearing platform 1031 is horizontally arranged, and the load-bearing platform 1031 and the first mounting part 101 are on the same horizontal plane. At this time, the horizontal direction The force will directly act on the first mounting part 101 , and because the connection between the first mounting part 101 and the equipment is rigid, the force in the horizontal direction will not be able to shake the load-bearing part 103 .
  • Load-bearing member 103 is subjected to downward pressure:
  • the slot bracket 1051 plays a role of supporting the supporting link 1042, and the downward force acting on the load-bearing platform 1031 will directly act on the bottom tank wall 1054 and the slot bracket 1051 through the clamping block 1041 above, and the force direction is the length direction of the supporting link 1042. It should be noted that, at this time, the pressure on the bottom groove wall 1054 and the groove support 1051 is equal to the gravity G of the block 1041 and the bearing force of the block 1041.
  • FIG. 6 is a schematic diagram of force analysis of the clamping block 1041 and the bottom groove wall 1054 in another embodiment of the present invention.
  • the overall stress of the block 1041 and the decomposition of the force are as follows:
  • F 1 is the load-bearing force applied to the block 1041 by the load-bearing member 103;
  • F1 is that F1 acts on the block 1041 , and decomposes from F1 the pressure perpendicular to the bottom groove wall 1054 and directly applied to the bottom groove wall 1054, and
  • A is the angle of the first included angle 106
  • F2 is that F1 acts on the clamping block 1041, and decomposes the thrust parallel to the bottom groove wall 1054 directly exerted on the clamping block 1041 from F1, and
  • G is the gravity of the block 1041
  • G1 is that G acts on the block 1041, and decomposes from G the pressure that is perpendicular to the bottom groove wall 1054 and directly exerts on the bottom groove wall 1054, and
  • B is the angle of the angle formed by the bottom groove wall 1054 and the horizontal plane
  • G2 is that G acts on the clamping block 1041, and decomposes from G the thrust parallel to the bottom groove wall 1054 directly exerted on the clamping block 1041, and
  • f 1 is the frictional force between the bottom groove wall 1054 and the block 1041
  • ⁇ 1 is the friction coefficient of the contact surface between the block 1041 and the bottom groove wall 1054.
  • F1 is the pressure on the block 1041
  • F2 is the thrust directly applied to the block 1041 parallel to the bottom groove wall 1054.
  • F2 has different force directions, as follows:
  • the component force F2 is the thrust that drives the clamping block 1041 to slide toward the groove support 1051.
  • the load-bearing force on 1041 cannot decompose the component force that drives the block 1041 to disengage from the notch 1053, so when the first included angle 106 is an obtuse angle, the value range of the first included angle 106 is not limited;
  • the first included angle 106 is a right angle
  • the direction of the pressure F 1 acting on the block 1041 is perpendicular to the bottom groove wall 1054, so the pressure F 1 is the pressure of the block 1041 on the bottom groove wall 1054.
  • the pressure F 1 The component force F2 parallel to the bottom groove wall 1054 cannot be decomposed, and the clamping block 1041 lacks the thrust parallel to the bottom groove wall 1054 to drive the clamping block 1041 to slide out of the engaging groove 105.
  • the pressure F1 and The resultant force combined by the gravity G of the block 1041 will drive the block 1041 to slide downward in the slot 105;
  • the component force F2 is the thrust that drives the block 1041 to disengage from the direction of the notch 1053, so it is necessary to further limit the preset angle value of the first included angle 106 in order to achieve
  • the bottom groove wall 1054 restricts the locking block 1041 from detaching from the locking slot 105 through the frictional force generated by the locking block 1041 .
  • the preset angle range when the first included angle 106 is an acute angle needs to satisfy the following formula:
  • the frictional force between the bottom groove wall 1054 and the locking block 1041 can restrict the locking block 1041 from detaching from the locking slot 105 .
  • this embodiment provides the following solution to simplify the overall data design of the support bracket 10.
  • the pressure F1 generated when the support bracket 10 is used is compared with the gravity G of the clamping block 1041 , the value of F1 is far greater than G, so in the above formula, the data related to the gravity G of the block 1041 can be ignored, so the above formula can be simplified as:
  • Load-bearing member 103 is subjected to upward pulling force:
  • FIG. 7 is a schematic diagram of force analysis of the clamping block 1041 and the top groove wall 1052 in another embodiment of the present invention.
  • C is the angle of the second included angle 108
  • F 2 is the upward pulling force exerted on the clamping block 1041 by the bearing member 103;
  • F3 is the pressure exerted by F2 on the block 1041, perpendicular to the top groove wall 1052 and directly applied to the top groove wall 1052, and
  • F4 is the thrust that F2 acts on the block 1041 and is parallel to the top groove wall 1052 to directly exert on the block 1041, and
  • G is the gravity of the block 1041
  • G3 is that G acts on the clamping block 1041, and decomposes the component force perpendicular to the top groove wall 1052 from G, and
  • D is the angle of the angle formed by the top groove wall 1052 and the horizontal plane
  • G4 is that G acts on the clamping block 1041, and decomposes the component force parallel to the top groove wall 1052 from G, and
  • f 2 is the friction force generated by the top groove wall 1052 and the block 1041
  • the component force F4 is the thrust that drives the clamping block 1041 to slide toward the groove support 1051.
  • the component force F4 is the thrust that drives the clamping block 1041 to slide toward the groove support 1051.
  • the value range of the second included angle 108 is not limited;
  • the pulling force F2 acting on the block 1041 is perpendicular to the top groove wall 1052, so the pulling force F2 is the pressure of the block 1041 on the top groove wall 1052.
  • the pulling force F2 The component force F4 parallel to the top groove wall 1052 cannot be decomposed, and the block 1041 lacks the thrust that is parallel to the top groove wall 1052 and drives the block 1041 to slip out of the slot 105.
  • the pulling force F 2 of the block 1041 and The resultant force combined by the gravity G of the block 1041 will drive the block 1041 to slide downward in the slot 105;
  • the component force F4 is the thrust that drives the block 1041 to disengage from the direction of the notch 1053. Therefore, it is necessary to further limit the preset angle value of the second included angle 108 in order to It is realized that the frictional force generated by the top groove wall 1052 and the locking block 1041 restricts the locking block 1041 from detaching from the locking slot 105 . The following further refines this:
  • the thrust F2 acts on the block 1041.
  • the resultant force received is the thrust pushing the block 1041 to move downward, and the frictional force between the top groove wall 1052 and the block 1041 can restrict the block 1041 from detaching from the slot 105 . Therefore, the preset angle range of the second included angle 108 needs to satisfy the following formula:
  • C is the angle of the second included angle 108;
  • F 2 is the pulling force applied to the block 1041 by the load-bearing member 103;
  • G is the gravity of the block 1041;
  • ⁇ 2 is the friction between the contact surface of the block 1041 and the top groove wall 1052 Coefficient;
  • ⁇ 2 (F 2 sin CG cos D) is the friction force between the block 1041 and the top groove wall 1052;
  • D is the angle formed by the top groove wall 1052 and the horizontal plane.
  • the friction force between the top groove wall 1052 and the locking block 1041 can restrict the locking block 1041 from detaching from the locking slot 105 .
  • this embodiment provides the following solution to simplify the overall data design of the support bracket 10, in order to maintain the overall use stability of the support bracket 10, in the design
  • the value of F2 will be determined as the maximum pulling force that this support bracket 10 can produce in the actual use process, so the pulling force F2 and the gravity G of the clamping block 1041
  • the value of F2 is much greater than G, so in the above formula, the corresponding data with the gravity G of the block 1041 can be ignored, so the above formula can be simplified as:
  • the preset angle ranges of the first included angle 106 and the second included angle 108 must meet the following conditions:
  • the first included angle 106 The value of needs to be greater than or equal to the second included angle 108 .
  • the card when the values of the first included angle 106 and the second included angle 108 are both 90°, regardless of whether the load-bearing member 103 is subjected to a downward force or an upward pulling force, the card will The resultant force received by block 1041 in the direction parallel to top groove wall 1052 and bottom groove wall 1054 is the thrust to push block 1041 to move downward, and its overall stress effect is the most stable, so in this embodiment, the first included angle
  • the values of 106 and the second included angle 108 are preferably 90°.
  • the supporting member 104 is rotated to be stacked parallel to the load-bearing member 103 as a whole.
  • the support bracket 10 is folded as a whole, and then the load-bearing member 103 is rotated to make the support bracket 10 as a whole conform to the outline of the equipment.
  • This state is the storage state of the support bracket 10 .
  • the switching of the use state of the support bracket 10 is further refined as follows:
  • the existing foldable supports generally only have a one-way locking function, and its load-bearing effect is relatively stable, but when the load-bearing platform 1031 is subjected to a vertical upward pulling force, its one-way locking setting cannot The tension is limited, causing the load-bearing platform 1031 to vibrate under the action of the tension. If the tension is strong, the load-bearing platform 1031 may even turn upside down. The overall stability of the load-bearing platform 1031 is poor, and there is a safety risk , and the support bracket 10 provided by this solution is set through the ingenious limit structure of the block 1041 and the slot 105.
  • the support bracket 10 When using the support bracket 10, no matter which direction the load-bearing member 103 is subjected to external force, its vertical direction The component force will be transmitted to the clamping block 1041 through the support member 104. Under the limiting and fixing action of the clamping block 1041 and the clamping groove 105, the support bracket 10 can achieve a stable two-way locking effect, and its overall use stability is extremely high. Strong, in addition, the disassembly process of the clamping block 1041 is extremely simple, and the strength required to pull out the clamping block 1041 is not high. With such a structural setting, the support bracket 10 can be extremely convenient without sacrificing the stability of use. Detachable performance, its overall practicability is extremely strong, and it has excellent market competitiveness.
  • the clamping block 1041 in order to optimize the overall supporting effect of the clamping block 1041 and the slot bracket 1051, is arranged in the shape of an axis, and the hinge axis of the support member 104 and the load-bearing member 103 is consistent with that of the clamping block 1041.
  • the axial direction is parallel, the bottom groove wall 1054 and the top groove wall 1052 are both tangent to the block 1041, so when the block 1041 sinks into the groove holder 1051, the groove holder 1051 and the holder 1041 are in a fit shape, and the overall force The supporting effect is better.
  • the clamping block 1041 includes a rubber sleeve 1043 forming an outer edge contact surface.
  • the friction coefficient of the rubber sleeve 1043 is relatively high, so when the clamping block 1041 sinks into the groove holder 1051, the friction force generated by the clamping block 1041, the bottom groove wall 1054, and the top groove wall 1052 will be relatively large. , the limiting effect of the clamping block 1041 and the clamping groove 105 will be more stable, further improving the use stability of the supporting bracket 10 .
  • the rubber sleeve 1043 and the slot 105 are arranged in a transitional fit.
  • the rubber sleeve 1043 and The top groove wall 1052 and the bottom groove wall 1054 can be set in clearance fit, transition fit or interference fit. 1043 and the top groove wall 1052 and the bottom groove wall 1054 are arranged in a transition fit.
  • the characteristics of the transition fit may have a gap or an interference, but the resulting gap and interference are generally small and are mainly used for positioning Accurate and relatively static connection that is easy to disassemble realizes the positioning connection between the rubber sleeve 1043 and the card slot 105 that is easy to disassemble and assemble, and its stability and flexibility are high.
  • a damper is provided at the rotational connection between the bearing member 103 and the first mounting member 101 and at the hinge joint between the supporting member 104 and the bearing member 103 .
  • the setting of the damper can provide resistance to deplete the rotational torque of the structure, and its principle is a device for consuming motion energy.
  • the support bracket 10 When it is necessary to switch the use state of the support bracket 10 to the storage state, manually disengage the clamping block 1041 After the slot 105, the support bracket 10 as a whole can hover at any angle, so when the support bracket 10 is stored, it is very convenient for the operator to adjust the angle of the support bracket 10 adaptively, and its storage stability also has high stability. , further improving the overall practicability of the support bracket 10 .
  • the support bracket 10 can be applied to a stage mounted on the wall, wherein the first mounting part 101 and the second mounting part 102 are fixed on the wall by screws, and the first mounting part 101 Located above the second mounting part 102 , a desktop is fixedly arranged on the bearing platform 1031 .
  • the load-bearing member 103, the support member 104, and the desktop can be fixed on the wall in a folded storage state by adjusting the load-bearing member 103 and the support member 104.
  • the body is very small, and its effect of easy storage is more prominent.
  • the stage can realize a stable Two-way locking effect, the overall use stability is extremely strong.
  • the overall disassembly process of the block 1041 is extremely simple, and the overall folding and switching operation is more flexible. Compared with the existing folding stage, it has more stability in use. High and easy to fold.
  • the support bracket 10 in this embodiment can also be applied to the handrail structure of the stair climbing machine seat.
  • the support bracket 10 in this embodiment can also be applied to the handrail structure of the stair climbing machine seat.
  • the angle B and angle D will change in compliance with the movement of the stair climbing machine seat, so the preset angles A, B, C, and D
  • the preset angles A, B, C, and D When selecting the value, it is necessary to refer to the actual motion tilt data of the stair climbing machine seat. According to the actual data, the actual value range of angle B and angle D can be obtained. At this time, the angle A can be deduced through the formula obtained from the above analysis. Finally, the values of angles A, B, C, and D can be completely determined.
  • the generated pressure F1 is compared with the gravity G of the block 1041, and the value of F1 is far greater than G.
  • the data related to the gravity G of the block 1041 can be ignored , in the same way, when the load-bearing member 103 bears the tension, the tension F 2 is compared with the gravity G of the block 1041, and the value of F 2 is much larger than G, so in the above formula, the corresponding data with the gravity G of the block 1041 can be ignored , so when presetting the values of angles A, B, C, and D, a simplified scheme can be adopted, ignoring angles B and D for analysis and value selection.

Abstract

本发明公开了一种支撑支架以及应用该支架的扶手,其中，支撑支架包括第一安装件以及第二安装件，还包括承重件以及支撑件；所述承重件与所述第一安装件转动连接；所述支撑件一端与承重件转动连接，另一端设置有卡块；所述第二安装件上设置有卡接结构，所述卡接结构用于卡接所述卡块。本支撑支架不需牺牲使用稳定性，亦能够得到极为便捷的可拆卸性能，其整体实用性极强。

Description

支撑支架以及应用该支架的扶手 技术领域
本发明涉及支架技术领域，尤其涉及一种支撑支架以及应用该支架的扶手。
背景技术
随着时代的进步，可折叠式结构由于具有便于收纳，且不占用较大空间等优点，目前已经广泛使用在居家、日常用具及支撑支架等环境中。其中，以支撑支架举例，可折叠式支撑支架普遍适用并加装在折叠桌、各种设备的支撑台以及各种坐具的扶手结构上。
现有的可折叠式支架，其折叠方式多种多样，但普遍只具备单向锁紧功能，例如座椅上的可折叠扶手，扶手整体能够从上至下旋转至水平状态，随后被结构单向锁紧，扶手被限制继续向下转动，此时扶手具备支撑功能，但扶手向上受力时不具备锁紧功能，扶手将会在力的作用下向上转动，此类结构仅具备单向锁紧功能，整体的折叠切换操作较为灵活，但使用稳定性较差。又例如应用在辅助型坐具上的扶手结构，从使用方式上能够划分为折叠式以及固定式，因辅助型坐具的使用人群普遍为老年人或行走有障碍的人群，故对扶手的使用稳定性要求较高，折叠式的扶手结构为了提高其使用稳定性，普遍设计出需要多重解锁的锁紧结构。导致切换扶手折叠状态时的操作极为繁琐，甚至还会出现锁紧结构占用空间较大的问题，其实用性较低。综上所述，目前市场上仍然缺乏一种使用稳定性高，且折叠方式简便的支撑支架。
发明内容
本发明实施例的目的是提供一种支撑支架以及应用该支架的扶手，具有稳定性高，且折叠方式简便的优点。
为实现上述目的，本发明实施例提供了一种支撑支架，包括第一安装件以及第二安装件，还包括承重件以及支撑件；
所述承重件与所述第一安装件转动连接；
所述支撑件一端与承重件转动连接，另一端设置有卡块；
所述第二安装件上设置有卡接结构，所述卡接结构用于卡接所述卡块。
与现有技术相对比，现有的可折叠式支架普遍只具备单向锁紧功能，其承重效果较为稳定，但承重台受到竖直向上的拉力时，其单向锁紧的设置无法对拉力进行限制，导致承重部件将会在拉力的作用下发生抖动，若拉力力度较大时，甚至会出现承重部件上翻的不稳定现象，其整体的使用稳定性较差，存在安全风险，而本方案所提供的支撑支架，通过卡块与卡槽巧妙的限位结构设置，能够实现稳定的双向锁紧效果，其整体使用稳定性极强，另外，卡块整体的拆卸过程极为简单，且拔出卡块的所 需力度并不高，通过这样的结构设置，本支撑支架不需牺牲使用稳定性，亦能够得到极为便捷的可拆卸性能，其整体实用性极强。
作为上述方案的改进，所述卡接结构包括与所述卡块相对应、供所述卡块陷入的卡槽；
所述卡槽包括承托所述卡块的槽托、限制所述卡块上移的顶槽壁以及供所述卡块拔出脱离所述卡槽的槽口。
作为上述方案的改进，所述槽托延伸设置有底槽壁，所述底槽壁与所述顶槽壁向外延伸形成所述槽口。
作为上述方案的改进，所述卡块陷入所述卡槽时，所述承重件为承重状态，所述支撑件与所述底槽壁形成第一夹角，所述支撑件与所述顶槽壁形成第二夹角，在所述第一夹角和所述第二夹角分别处于对应预设角度范围内的情况下，通过所述底槽壁和/或所述顶槽壁与所述卡块之间的摩擦力，限制所述卡块脱离所述卡槽。
作为上述方案的改进，所述第二夹角小于或等于所述第一夹角。
作为上述方案的改进，所述第一夹角以及第二夹角的取值均为90°。
作为上述方案的改进，所述底槽壁与所述顶槽壁相互平行设置。
作为上述方案的改进，所述卡块与所述底槽壁和/或所述顶槽壁呈间隙配合或过盈配合或过渡配合设置。
作为上述方案的改进，所述卡块呈轴状设置，所述支撑件与所述承重件的转动轴向与所述卡块的轴向平行；
所述卡块陷入所述卡槽时，所述卡块与所述槽托相贴合，且与所述顶槽壁相切。
作为上述方案的改进，所述卡块的轴向垂直于所述支撑件表面。
作为上述方案的改进，所述卡块包括形成外缘接触面的橡胶套。
作为上述方案的改进，所述承重件包括承重台以及安装连杆，所述安装连杆端部与所述第一安装件转动连接。
作为上述方案的改进，所述承重台与所述安装连杆一体式设置。
作为上述方案的改进，所述支撑件包括支撑连杆，所述支撑连杆一端铰接于所述承重台底部。
作为上述方案的改进，所述承重件为承重状态时，所述承重件呈水平设置。
作为上述方案的改进，所述承重件与所述第一安装件的转动连接处设置有阻尼器，所述支撑件与所述承重件的转动连接处亦设置有阻尼器。
本发明还提供了一种扶手，包括上述方案所述的支撑支架，还包括扶手垫，所述扶手垫固定设置于所述承重件。
与现有技术相对比，本扶手具备双向锁紧功能，整体使用稳定性极强。再者，本扶手的拆卸过程极为简单，折叠切换操作较为灵活，即便是行动不便的使用人群，使用者亦能独自操作，极为凸显出 本扶手的使用稳定性，且便于折叠的优点。
其他有益效果：
1.为了优化卡块与槽托的整体承托效果，卡块呈轴状设置，支撑件与承重件的铰接轴向与卡块的轴向平行，底槽壁与顶槽壁均与卡块相切，故卡块陷入到槽托内时，槽托与卡块呈贴合状，其整体的受力承托效果较佳；
2.卡块陷入到槽托时，卡块与底槽壁、顶槽壁所产生的摩擦力将较大，如此一来，卡块与卡槽的限位效果将会更为稳定，进一步的提高了本支撑支架的使用稳定性；
3.为了维持支撑支架的使用稳定性，以及卡块的易拆卸性能，橡胶套与顶槽壁、底槽壁呈过渡配合设置，过渡配合的特性，是可能具有间隙，也可能具有过盈，但所得到的间隙和过盈量，一般较小，主要用于定位精确并要求便于拆卸的相对静止的联接，实现橡胶套与卡槽间易于拆卸以及装配的定位联接，其稳定性以及灵活性均较高；
4.阻尼器的设置能够提供耗减结构转动扭矩的阻力，其原理为耗减运动能量的装置，当需要将支撑支架的使用状态切换至收纳状态时，人工将卡块脱离卡槽后，支撑支架整体能够在任意角度悬停，故收纳本支撑支架时，极为便于操作人员对支撑支架进行适应性的角度调整，其收纳稳定性亦具有较高的稳定性，进一步地提高了本支撑支架的整体实用性；
5.卡块整体的拆卸过程极为简单，整体的折叠切换操作较为灵活，具有使用稳定性高，且折叠方式简便的优点。
附图说明
图1是本发明一实施例中支撑支架的具体结构示意图；
图2是本发明一实施例中卡槽的具体结构示意图；
图3是本发明一实施例中卡块与底槽壁的受力分析示意图；
图4是本发明一实施例中卡块与顶槽壁的受力分析示意图；
图5是本发明一实施例中坐具的具体结构示意图；
图6是本发明另一实施例中卡块与底槽壁的受力分析示意图；
图7是本发明另一实施例中卡块与顶槽壁的受力分析示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1：
参见图1以及图2所示，其中，图1是本发明一实施例中支撑支架10的具体结构示意图，图2是本发明一实施例中卡槽的具体结构示意图。
一种支撑支架10，包括用于加装固定的第一安装件101以及第二安装件102，本支撑支架10还包括承重件103以及支撑件104。其中，承重件103与第一安装件101转动连接；支撑件104一端与承重件103铰接，另一端的侧部突出设置有卡块1041。
需要说明的是，本支撑支架10整体为加装部件，本支撑支架10能够根据实际所需，通过第一安装件101以及第二安装件102加装固定在所需加装的设备或结构上，其连接方式可为焊接或螺钉连接，在此不再做进一步的限定。
进一步地细化，在本实施例中，承重件103包括一体式设置的承重台1031以及安装连杆1032，安装连杆1032一端与承重台1031固定，另一端与第一安装件101转动连接。支撑件104包括支撑连杆1042，支撑连杆1042一端铰接于承重台1031底部，为了优化支撑连杆1042对承重台1031的支撑受力效果，支撑连杆1042的铰接端位于承重台1031中部。故承重件103整体能够绕第一安装件101进行360度转动，而支撑连杆1042能够绕铰接点相对于承重件103整体进行转动。
第二安装件102开设有与卡块1041相对应、供卡块1041卡入的卡槽105，卡槽105包括承托卡块1041的槽托1051、限制卡块1041上移的顶槽壁1052以及供卡块1041拔出脱离卡槽105的槽口1053，其中，在本实施例中，槽口1053朝上倾斜设置，槽托1051位于卡槽105的底部。
需要说明的是，卡块1041卡入卡槽105时，承重件103处于承重状态。在本实施例中，承重件103处于承重状态时，承重件103上的承重台1031呈水平设置，承重件103所承载的重量通过支撑连杆1042传递到卡块1041上，随后槽托1051对卡块1041起到承重的效果。
进一步地细化，在本实施例中，槽托1051延伸设置有底槽壁1054，底槽壁1054与顶槽壁1052相互平行，两者向远离槽托1051的方向延伸形成供卡块1041进入或脱离卡槽105的槽口1053。卡块1041卡入槽托1051促使承重件103进入承重状态时，支撑连杆1042与顶槽壁1052或底槽壁1054形成第一夹角106，第一夹角106处于预设角度范围内，而在本实施例中，第一夹角106的预设角度范围为70°-110°。
需要说明的是，第一夹角106处于预设角度范围内的情况下，底槽壁1054以及顶槽壁1052通过与卡块1041所产生的摩擦力，限制卡块1041脱离卡槽105。在本实施例中，槽托1051对卡块1041整体进行承重时，卡块1041顶部与顶槽壁1052相抵接，槽口1053的朝向为远离支撑件104铰接点的方向，此时第一安装件101、第二安装件102与支撑连杆1042的铰接点形成一个三角形，又因第一安装件101已被固定，形成第一固定点，故卡块1041卡入到卡槽105内并在摩擦力的作用下形成第二固定点时，即可形成稳固的三角形结构。
示例性的，在本实施例中，本支撑支架10整体通过第一安装件101以及第二安装件102安装在所需设备上，其中，第一安装件101位于第二安装件102上方，下面对卡块1041以及承重件103的整体 受力情况作进一步的分析：
承重件103于水平方向受力：
卡块1041卡入到槽托1051时，承重件103整体处于承重状态，承重台1031呈水平设置，承重台1031与第一安装件101处于同一水平面上，此时水平方向的受力将会直接作用到第一安装件101上，又因第一安装件101与设备的连接性质为刚性连接，故水平方向的受力将无法撼动承重件103。
承重件103受下压力：
如图3所示，图3是本发明一实施例中卡块1041与底槽壁1054的受力分析示意图。卡块1041卡入到槽托1051时，槽托1051对支撑连杆1042起到承托的作用，故作用到承重台1031上的下压力将直接通过卡块1041作用到底槽壁1054以及槽托1051上，且受力方向为支撑连杆1042的长度方向，需要说明的是，此时，底槽壁1054以及槽托1051所受到的压力为卡块1041自身重力G与卡块1041所受承重力的总和，其中承重力为支撑连杆1042与承重件103两者各自的重力加上承重件103所受下压力的总和，此时，根据预设角度的设置，将出现以下三种受力情况：
1.第一夹角106大于等于70°且小于90°时，作用于卡块1041的承重力将在第一夹角的影响下分解出两组分力，分别为垂直于底槽壁1054的压力以及与底槽壁1054平行、驱使卡块1041滑出卡槽105的推力，此时，卡块1041与底槽壁1054在摩擦系数以及预设角度的相互配合作用下，推力将小于压力所产生的摩擦力，故此时卡块1041所受的承重力以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
2.第一夹角106等于90°时，作用于卡块1041的承重力的方向与底槽壁1054相互垂直，故承重力即为卡块1041对底槽壁1054的压力，卡块1041缺乏与底槽壁1054平行、驱使卡块1041滑出卡槽105的推力，此时卡块1041所受的承重力以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
3.第一夹角106大于90°且小于等于110°时，作用于卡块1041的承重力将在第一夹角106的影响下分解出两组分力，分别为垂直于底槽壁1054的压力以及与底槽壁1054平行、驱使卡块1041向下滑动的推力，此时，卡块1041所受的承重力以及自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动。
故承重件103受下压力时，卡块1041所受的合力均为驱使卡块1041在卡槽105内向下滑动的推力，底槽壁1054与卡块1041之间的摩擦力限制卡块1041脱离卡槽105。
承重件103受方向朝上的拉力：
如图4所示，图4是本发明一实施例中卡块1041与顶槽壁1052的受力分析示意图。作用到承重台1031上的拉力将直接通过卡块1041作用到顶槽壁1052以及槽托1051上，且受力方向为支撑连杆1042的长度方向，此时，根据预设角度的设置，将出现以下三种受力情况：
1.第一夹角106大于等于70°且小于90°时，作用于卡块1041的拉力将会在第一夹角的影响下 分解出两组分力，分别为垂直于顶槽壁1052的压力以及与顶槽壁1052平行、驱使卡块1041向下滑动的推力，此时，卡块1041所受的拉力以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
2.第一夹角等于90°时，作用于卡块1041的拉力的方向与顶槽壁1052相互垂直，故拉力即为卡块1041对顶槽壁1052的压力，卡块1041缺乏与顶槽壁1052平行、驱使卡块1041滑出卡槽105的推力，此时卡块1041所受的拉力以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
3.第一夹角大于90°且小于等于110°时，作用于卡块1041的拉力将在第一夹角106的影响下分解出两组分力，分别为垂直于顶槽壁1052的压力以及与顶槽壁1052平行、驱使卡块1041滑出卡槽105的推力，此时，卡块1041与顶槽壁1052在摩擦系数以及预设角度的相互配合作用下，推力小于压力所产生的摩擦力，故此时卡块1041所受的拉力以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动。
故承重件103受方向向上的拉力时，卡块1041所受的合力均为驱使卡块1041在卡槽105内向下滑动的推力，顶槽壁1052与卡块1041之间的摩擦力限制卡块1041脱离卡槽105。
综上所述，当第一夹角106的角度处于预设角度范围70°-110°内时，无论承重件103所受的是方向朝下的下压力还是方向朝上的拉力，又或是水平方向的推力，卡块1041所受的合力均为驱使卡块1041在卡槽105内向下滑动的推力，底槽壁1054以及顶槽壁1052通过与卡块1041所产生的摩擦力，限制卡块1041脱离卡槽105。
需要说明的是，根据上述分析结果得知，当第一夹角106的角度为90°时，无论承重件103所受的是方向朝下的下压力还是方向朝上的拉力，卡块1041所受的分力均不会出现驱使卡块1041脱离卡槽105的推力，其整体受力效果最为稳定，故在本实施例中，第一夹角106的取值优选为90°。
另一方面，设备处于日常收纳状态时，支撑件104转动至与承重件103整体相互平行层叠，此时支撑支架10整体成折叠状，随后转动承重件103，令支撑支架10整体与设备的轮廓相贴合，该状态即为支撑支架10的收纳状态。以下对支撑支架10使用状态的切换做进一步的细化：
需要将支撑支架10从收纳状态切换至使用状态时，转动承重件103整体，将承重台1031转至水平状态，随后转动支撑连杆1042，令支撑连杆1042上的卡块1041卡入到第二安装件102的卡槽105内，卡块1041通过槽口1053进入到卡槽105内，槽托1051对卡块1041起到承托的作用，此时承重台1031进入到承重状态；
需要将支撑支架10从使用状态切换至收纳状态时，握住支撑连杆1042带动卡块1041从槽口1053处拔出即可，拔出卡块1041过程中，因整体的施力方向为平行于底槽壁1054且指向槽口1053的方向，其产生的摩擦力较小，故此时能够轻易将卡块1041从卡槽105中拔出，随后转动承重件103，令支撑支架10整体与设备的轮廓相贴合即可。
与现有技术相对比，现有的可折叠式支架普遍只具备单向锁紧功能，其承重效果较为稳定，但承重台1031受到竖直向上的拉力时，其单向锁紧的设置无法对拉力进行限制，导致承重台1031将会在拉力的作用下发生抖动，若拉力力度较大时，甚至会出现承重台1031上翻的不稳定现象，其整体的使用稳定性较差，存在安全风险，而本方案所提供的支撑支架10，通过卡块1041与卡槽105巧妙的限位结构设置，在运用本支撑支架10时，无论承重件103受到哪一方向上的外力，其竖直方向上的分力将会通过支撑件104传递到卡块1041上，在卡块1041与卡槽105的限位固定作用下，本支撑支架10能够实现稳定的双向锁紧效果，其整体使用稳定性极强，另外，卡块1041整体的拆卸过程极为简单，且拔出卡块1041的所需力度并不大，通过这样的结构设置，本支撑支架10不需牺牲使用稳定性，亦能够得到极为便捷的可拆卸性能，其整体实用性极强，具有优异的市场竞争力。
更优的是，在本实施例中，为了优化卡块1041与槽托1051的整体承托效果，卡块1041呈轴状设置，支撑件104与承重件103的铰接轴向与卡块1041的轴向平行，卡块1041的轴向垂直于支撑件104的表面，底槽壁1054与顶槽壁1052均与卡块1041相切，故卡块1041陷入到槽托1051内时，槽托1051与卡块1041呈贴合状，其整体的受力承托效果较佳。
更优的是，在本实施例中，卡块1041包括形成外缘接触面的橡胶套1043。
需要说明的是，橡胶套1043与顶槽壁1052以及底槽壁1054所形成的摩擦系数均较高，故卡块1041陷入到槽托1051时，卡块1041与底槽壁1054、顶槽壁1052所产生的摩擦力将较大，如此一来，卡块1041与卡槽105的限位效果将会更为稳定，进一步的提高了本支撑支架10的使用稳定性。
更优的是，在本实施例中，橡胶套1043与卡槽105呈过渡配合设置。
需要说明的是，正常使用本支撑支架10时，若卡块1041与卡槽105之间的配合存在间隙，当卡块1041受到方向朝上的拉力时，卡块1041整体将会在间隙中产生移位动作，该移位动作将联动承重台1031整体进行抖动，故为了避免承重台1031在使用过程中发生抖动，需要对卡块1041与卡槽105之间配合作进一步的限定，橡胶套1043与顶槽壁1052、底槽壁1054可呈间隙配合、过渡配合或过盈配合设置，而在本实施例中，为了维持支撑支架10的使用稳定性，以及卡块1041的易拆卸性能，橡胶套1043与顶槽壁1052、底槽壁1054呈过渡配合设置，过渡配合的特性，是可能具有间隙，也可能具有过盈，但所得到的间隙和过盈量，一般较小，主要用于定位精确并要求便于拆卸的相对静止的联接，实现橡胶套1043与卡槽105间易于拆卸以及装配的定位联接，其稳定性以及灵活性均较高。
更优的是，在本实施例中，承重件103与第一安装件101的转动连接处，以及支撑件104与承重件103的铰接处均设置有阻尼器。
需要说明的是，阻尼器的设置能够提供耗减结构转动扭矩的阻力，其原理为耗减运动能量的装置，当需要将支撑支架10的使用状态切换至收纳状态时，人工将卡块1041脱离卡槽105后，支撑支架10整体能够在任意角度悬停，故收纳本支撑支架10时，极为便于操作人员对支撑支架10进行适应性的角度调整，其收纳稳定性亦较高，进一步地提高了本支撑支架10的整体实用性。
在本实施例中，本支撑支架10应用于加装在墙壁上的载物台，其中，第一安装件101以及第二安装件102均通过螺钉固定安装在墙壁上，第一安装件101位于第二安装件102上方，在承重台1031上固定设置有桌面。
示例性的，载物台不需使用时，可通过调整承重件103以及支撑件104，令承重件103、支撑件104以及桌面成折叠式的收纳状态固定在墙壁上，收纳状态整体的占位体积极小，其便于收纳的效果较凸显。需要展开载物台进行使用时，转动承重件103至水平状态，随后转动支撑件104，令支撑件104上的卡块1041陷入到槽托1051上即可，此时载物台能够实现稳定的双向锁紧效果，其整体的使用稳定性极强，另外，卡块1041的拆卸过程极为简单，整体的折叠切换操作较为灵活，与现有的折叠式载物台相对比，具有使用稳定性高，且折叠方式简便的优点。
实施例2：
参照图5所示，图5是本发明一实施例中坐具的具体结构示意图。
本发明还提供了一种扶手，与实施例1的区别在于，在本实施例中，支撑支架10应用于爬楼机坐具的扶手上，支撑支架10设置有两组，且对称设置在坐具的两侧，其中，第一安装件101以及第二安装件102均通过螺钉固定安装在坐具侧部，第一安装件101位于第二安装件102上方，在承重台1031上固定设置有扶手垫107。
示例性的，本扶手不需使用时，可通过调整承重件103以及支撑件104，令承重件103、支撑件104以及扶手垫107成折叠式的收纳状态固定在坐具上，收纳状态整体的占位体积极小，其便于收纳的效果较凸显。需要展开扶手进行使用时，转动承重件103至水平状态，随后转动支撑件104，令支撑件104上的卡块1041陷入到槽托1051上即可，整体的拆装操作极为简便。
进一步地，因爬楼机坐具普遍适用于行动不方便的使用人群，故对于该类辅助型器械，必须得具备较高的设备使用稳定性，而在本实施例中，使用者在初期乘坐坐具进行爬楼时，坐具在运行的过程中会发生正常的抖动，而使用者在使用初期面对坐具正常的抖动会出现紧张甚至慌张的情绪，此时使用者将紧握甚至紧压扶手垫107，因第二安装件102整体为刚性固定，故槽托1051能够对卡块1041、支撑件104整体实现较好的承托效果，其稳定性较好。另外，使用者出现紧张情绪时，还会出现上抽扶手垫107的动作，势必会对承重件103施以方向向上的拉力，此时卡槽105内的顶槽壁1052通过与卡块1041所产生的摩擦力，能够限制卡块1041脱离卡槽105，故使用者无论是紧压扶手垫107还是上抽扶手垫107，均无法撼动支撑支架10的整体结构，此时扶手结构能够实现稳定的双向锁紧效果，其整体使用稳定性极强。
再者，本扶手整体的拆卸过程极为简单，需要将支撑支架10从使用状态切换至收纳状态时，仅需操作支撑连杆1042，握住支撑连杆1042带动卡块1041从槽口1053处拔出即可，拔出卡块1041过程中，因整体的施力方向为平行于底槽壁1054且指向槽口1053的方向，其产生的摩擦力较小，即便本坐具的使用者为行动不便的使用人群，使用者亦能轻易将卡块1041从卡槽105中拔出。另外，使用者 需要使用本爬楼机坐具时，普遍需要从正常的坐具或床上转移至本爬楼机坐具，同时，本爬楼机坐具使用完毕时，亦需要从本爬楼机坐具转移至其他正常坐具上，故使用者使用该类辅助性坐具时，将会经常性地需要进行转移操作，当使用者缺乏陪护人员在身边时，从坐具的侧部进行转移操作是使用者最为方便的转移方式，此时，本扶手结构的便拆装性能则显得极为重要，即便使用者缺乏陪护人员在身边，亦可独自对扶手结构的进行拆卸或安装，折叠本扶手结构时，仅需转动承重件103以及支撑件104，令支撑支架10整体与设备的轮廓相贴合即可，随后使用者即可通过坐具空置的侧部进行转移操作，其整体的折叠切换操作较为灵活，即便是行动不便的使用人群，使用者亦能独自操作，极为凸显出本扶手结构的使用稳定性，且便于折叠的优点。
实施例3：
参照图1以及图2所示，其中，图1是本发明一实施例中支撑支架10的具体结构示意图，图2是本发明一实施例中卡槽的具体结构示意图。
本实施例提供一种支撑支架10，包括用于加装固定的第一安装件101以及第二安装件102，本支撑支架10还包括承重件103以及支撑件104。其中，承重件103与第一安装件101转动连接；支撑件104一端与承重件103铰接，另一端的侧部突出设置有卡块1041。
需要说明的是，本支撑支架10整体为加装部件，本支撑支架10能够根据实际所需，通过第一安装件101以及第二安装件102加装固定在所需加装的设备或结构上，其连接方式可为焊接或螺钉连接，在此不再做进一步的限定。
进一步地细化，在本实施例中，承重件103包括一体式设置的承重台1031以及安装连杆1032，安装连杆1032一端与承重台1031固定，另一端与第一安装件101转动连接。支撑件104包括支撑连杆1042，支撑连杆1042一端铰接于承重台1031底部，为了优化支撑连杆1042对承重台1031的支撑受力效果，支撑连杆1042的铰接端位于承重台1031中部。故承重件103整体能够绕第一安装件101进行360度转动，而支撑连杆1042能够绕铰接点相对于承重件103整体进行转动。
第二安装件102开设有与卡块1041相对应、供卡块1041卡入的卡槽105，卡槽105包括承托卡块1041的槽托1051、限制卡块1041上移的顶槽壁1052以及供卡块1041拔出脱离卡槽105的槽口1053，其中，在本实施例中，槽口1053朝上倾斜设置，槽托1051位于卡槽105的底部。
需要说明的是，卡块1041卡入卡槽105时，承重件103处于承重状态。在本实施例中，承重件103处于承重状态时，承重件103上的承重台1031呈水平状，承重件103所承载的重量通过支撑连杆1042传递到卡块1041上，随后槽托1051对卡块1041起到承重的效果。
进一步地细化，在本实施例中，槽托1051延伸设置有底槽壁1054，顶槽壁1052以及底槽壁1054两者向远离槽托1051的方向延伸形成供卡块1041进入或脱离卡槽105的槽口1053。在本实施例中，卡块1041卡入槽托1051促使承重件103进入承重状态时，支撑连杆1042与底槽壁1054形成第一夹角106，支撑连杆1042与顶槽壁1052形成第二夹角108，需要说明的是，第一夹角106以及第二夹角 108分别处于对应预设角度范围内的情况下，卡槽105将根据卡块1041所受到的外力的方向，通过底槽壁1054或顶槽壁1052与卡块1041所产生的摩擦力，限制卡块1041脱离卡槽105。在本实施例中，槽托1051对卡块1041整体进行承重时，卡块1041与底槽壁1054相抵接，槽口1053的朝向为远离支撑件104铰接点的方向，此时第一安装件101、第二安装件102与支撑连杆1042的铰接点形成一个三角形，又因第一安装件101已被固定，形成第一固定点，故卡块1041卡入到卡槽105内并在摩擦力的作用下形成第二固定点时，即可完成稳固的三角形结构。
示例性的，在本实施例中，本支撑支架10整体通过第一安装件101以及第二安装件102安装在所需设备上，其中，第一安装件101位于第二安装件102上方。下面对卡块1041以及承重件103的整体受力情况作进一步的分析：
1.承重件103于水平方向受力：
需要说明的是，卡块1041卡入到槽托1051时，承重件103整体处于承重状态，承重台1031呈水平设置，承重台1031与第一安装件101处于同一水平面上，此时水平方向的受力将会直接作用到第一安装件101上，又因第一安装件101与设备的连接性质为刚性连接，故水平方向的受力将无法撼动承重件103。
2.承重件103受下压力：
卡块1041卡入到槽托1051时，槽托1051对支撑连杆1042起到承托的作用，作用到承重台1031上的下压力将直接通过卡块1041作用到底槽壁1054以及槽托1051上，且受力方向为支撑连杆1042的长度方向，需要说明的是，此时，底槽壁1054以及槽托1051所受到的压力为卡块1041自身重力G与卡块1041所受承重力的总和，其中承重力为支撑连杆1042与承重件103两者各自的重力加上承重件103所受下压力的总和，现对该状态下的卡块1041受力情况进行进一步分析：
参照图6所示，图6是本发明另一实施例中卡块1041与底槽壁1054的受力分析示意图。
卡块1041整体受力情况以及力的分解情况如下：
F 1为通过承重件103对卡块1041施加的承重力；
F1为F 1作用在卡块1041上，并从F 1中分解出垂直于底槽壁1054并对底槽壁1054直接施以的压力，且
F1＝F 1 sin A
其中，A为第一夹角106的角度；
F2为F 1作用在卡块1041上，并从F 1中分解出平行于底槽壁1054对卡块1041直接施以的推力,且
F2＝F 1 cos A；
G为卡块1041的重力；
G1为G作用在卡块1041上，并从G中分解出垂直于底槽壁1054并对底槽壁1054直接施以的压力，且
G1＝G cos B
其中，B为底槽壁1054与水平面形成的夹角的角度；
G2为G作用在卡块1041上，并从G中分解出平行于底槽壁1054对卡块1041直接施以的推力，且
G2＝G sin B；
f 1为底槽壁1054与卡块1041之间的摩擦力，且
f 1＝μ 1(F 1 sin A+G cos B)
其中，μ 1为卡块1041与底槽壁1054接触面的摩擦系数。
需要说明的是，在本实施例中，F 1为对卡块1041的压力时，F2为平行于底槽壁1054对卡块1041直接施以的推力，随着第一夹角106的变化，F2存在不同施力方向，具体如下：
第一夹角106的取值为钝角角度时，分力F2为驱使卡块1041向槽托1051方向下滑的推力，此时，无论第一夹角106的取值如何设定，作用在卡块1041上的承重力均无法分解出驱使卡块1041向槽口1053方向脱离的分力，故第一夹角106为钝角时，第一夹角106的取值范围不受限制；
第一夹角106为直角时，作用于卡块1041的压力F 1的方向与底槽壁1054相互垂直，故压力F 1即为卡块1041对底槽壁1054的压力，此时压力F 1将无法分解出平行于底槽壁1054的分力F2，卡块1041缺乏与底槽壁1054平行、驱使卡块1041滑出卡槽105的推力，此时卡块1041所受的压力F 1以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
第一夹角106的取值为锐角角度时，分力F2为驱使卡块1041向槽口1053方向脱离的推力，故需要对第一夹角106的预设角度值作进一步的限定，才能实现底槽壁1054通过与卡块1041所产生的摩擦力，限制卡块1041脱离卡槽105。下述对此做进一步的细化：
根据上述受力分析可知，承重件103在受下压力时，当F2≤f 1+G2,此时卡块1041在平行于底槽壁1054的方向上所受的合力为方向朝下，为推动卡块1041向下移动的推力，此时底槽壁1054与卡块1041之间的摩擦力可限制卡块1041脱离卡槽105。故第一夹角106为锐角时的预设角度范围需要满足下述公式：
F 1 cos A≤μ 1(F 1 sin A+G cos B)+G sin B
其中，A为第一夹角106的角度；B为底槽壁1054与水平面形成的夹角的角度；F 1为通过承重件103对卡块1041施加的压力；G为卡块1041的重力；μ 1为卡块1041与底槽壁1054接触面的摩擦系数；μ 1(F 1 sin A+G cos B)表示卡块1041与底槽壁1054之间的摩擦力。
示例性的，在本实施例中，对第一夹角106进行设定时，需要先行界定上述公式中的μ 1值、G值以及F 1值，其中G值以及μ 1值根据实际情况取值即可，F 1的取值与本支撑支架10中承重件103的实际承重量相关，故设定F 1值时，需要根据支撑支架10的使用环境，标定出最大承重载荷，定好μ 1值、G值以及F 1值后，即可通过上述公式得出角度A与角度B的函数关系，当选定角度B时，即可得到角度A的取值范围。
综上所述，第一夹角106的角度值A处于预设角度范围时，底槽壁1054与卡块1041之间的摩擦 力可限制卡块1041脱离卡槽105。
另外，为了便于设定第一夹角106，本实施例提供下述简化本支撑支架10整体数据设计的方案，本支撑支架10使用时所产生的压力F 1与卡块1041的重力G相对比，F 1的数值远大于G，故在上述公式中，与卡块1041重力G相关的数据可忽略不计，故上述公式可简化为：
F 1 cos A≤μ 1(F 1 sin A)
从而得到：
cos A≤μ 1 sin A
根据上述公式分析可得，承重件103在受下压力时，当第一夹角106的取值满足上述公式，卡块1041在与底槽壁1054平行的方向上所受的合力为推动卡块1041向下移动的推力，底槽壁1054与卡块1041之间的摩擦力可限制卡块1041脱离卡槽105。
3.承重件103受方向朝上的拉力：
作用到承重台1031上的拉力，将直接通过卡块1041作用到顶槽壁1052以及槽托1051上，且受力方向为支撑连杆1042的长度方向，现对该状态下的卡块1041受力情况进行进一步分析：
参照图7所示，图7是本发明实施例中另一实施例中卡块1041与顶槽壁1052的受力分析示意图。
C为第二夹角108的角度；
F 2为通过承重件103对卡块1041施加的向上拉力；
F3为F 2作用在卡块1041上，垂直于顶槽壁1052并对顶槽壁1052直接施以的压力，且
F3＝F 2 sin C；
F4为F 2作用在卡块1041上，平行于顶槽壁1052对卡块1041直接施以的推力,且
F4＝F 2 cos C；
G为卡块1041的重力；
G3为G作用在卡块1041上，并从G中分解出垂直于顶槽壁1052的分力，且
G3＝G cos D
其中，D为顶槽壁1052与水平面形成的夹角的角度；
G4为G作用在卡块1041上，并从G中分解出平行于顶槽壁1052的分力，且
G4＝G sin D；
f 2为顶槽壁1052与卡块1041所产生的摩擦力，且
f 2＝μ 2[F 2 sin C-G cos D]。
需要说明的是，在本实施例中，F 2拉力较小时，将出现F 2 sin C≤G cos D，卡块1041整体将会在自重的作用下维持在槽托1051上，故仅需考虑F 2 sin C>G cos D的情况，F 2为对卡块1041的拉力时，F4为平行于顶槽壁1052对卡块1041直接施以的推力，随着第二夹角108的变化，F4存在不同施力方向。
第二夹角108的取值为锐角角度时，分力F4为驱使卡块1041向槽托1051方向下滑的推力，此时， 无论第二夹角108的取值如何设定，作用在卡块1041上的拉力均无法分解出驱使卡块1041向槽口1053方向脱离的分力，故第二夹角108的预设角度范围为锐角时，第二夹角108的取值范围不受限制；
第二夹角108为直角时，作用于卡块1041的拉力F 2的方向与顶槽壁1052相互垂直，故拉力F 2即为卡块1041对顶槽壁1052的压力，此时拉力F 2将无法分解出平行于顶槽壁1052的分力F4，卡块1041缺乏与顶槽壁1052平行、驱使卡块1041滑出卡槽105的推力，此时卡块1041所受的拉力F 2以及卡块1041自身重力G所组合的合力将驱使卡块1041在卡槽105内向下滑动；
第二夹角108的取值为钝角角度时，分力F4为驱使卡块1041向槽口1053方向脱离的推力，故，需要对第二夹角108的预设角度值进行进一步的限定，才能实现顶槽壁1052通过与卡块1041所产生的摩擦力，限制卡块1041脱离卡槽105。下述对此做进一步的细化：
根据上述受力分析可知，第二夹角108的设定值为钝角值时，推力F 2作用于卡块1041，当F4≤f 2时，卡块1041在平行于顶槽壁1052方向上所受到的合力为推动卡块1041向下移动的推力，顶槽壁1052与卡块1041之间的摩擦力可限制卡块1041脱离卡槽105。故第二夹角108的预设角度范围需要满足下述公式：
当C>90°且F 2 sin C＞G；F 2|cos C|≤μ 2(F 2 sin C-G cos D)+G sin D
其中，C为第二夹角108的角度；F 2为通过承重件103对卡块1041施加的拉力；G为卡块1041的重力；μ 2为卡块1041与顶槽壁1052接触面的摩擦系数；μ 2(F 2 sin C-G cos D)为卡块1041与顶槽壁1052之间的摩擦力；D为顶槽壁1052与水平面形成的夹角的角度。
示例性的，在本实施例中，对第二夹角108进行设定时，需要先行界定上述公式中的μ 2值、G值以及F 2值，其中G值以及μ 2值根据实际情况取值即可，F 2的取值与本支撑支架10中承重件103的实际情况相关，故设定F 2值时，需要根据支撑支架10的使用环境，标定出通过承重件103所能产生的最大的拉力值，定好μ 2值、G值以及F 2值后，即可通过上述公式得出角度C与角度D的函数关系，当选定角度D时，即可得到角度C的取值范围。
综上所述，第二夹角108的角度值C处于预设角度范围时，顶槽壁1052与卡块1041之间的摩擦力可限制卡块1041脱离卡槽105。
进一步地，在本实施例中，为了便于设定第二夹角108，本实施例提供下述简化本支撑支架10整体数据设计的方案，为了维持本支撑支架10的整体使用稳定性，在设定第二夹角108的角度值时，为了保险起见，F 2的取值将定为本支撑支架10在实际使用过程中所能产生的最大拉力，故拉力F 2与卡块1041的重力G相对比，F 2的数值远大于G，故在上述公式中，与卡块1041重力G的相应数据可忽略不计，故上述公式可简化为：
F 2|cos C|≤μ 2(F 2 sin C)
从而得到：
|cos C|≤μ 2 sin C
根据上述公式分析可得，承重件103在受方向朝上的拉力时，当第二夹角108的取值满足上述公式，卡块1041在平行于顶槽壁1052方向上所受到的合力为推动卡块1041向下移动的推力，顶槽壁1052与卡块1041之间的摩擦力可限制卡块1041脱离卡槽105。
最后，需要说明的是，根据卡块1041以及承重件103的整体受力情况分析可得，第一夹角106以及第二夹角108的预设角度范围需满足下述条件：
第一夹角106：
1.A为钝角时，取值理论上不受限制；
2.A为锐角时，A满足：F 1 cos A≤μ 1(F 1 sin A+G cos B)+G sin B。
第二夹角108：
1.C为钝角时，C满足：F 2|cos C|≤μ 2(F 2 sin C-G cos D)+G sin D；
2.C为锐角时，取值理论上不受限制。
需要说明的是，在实际应用中，因槽口1053为顶槽壁1052与底槽壁1054向外延伸而形成，为了避免卡块1041的卡入以及脱离活动受到干涉，故第一夹角106的取值需要大于或等于第二夹角108。
根据上述分析结果得知，当第一夹角106以及第二夹角108的取值均为90°时，无论承重件103所受的是方向朝下的下压力还是方向朝上的拉力，卡块1041在平行于顶槽壁1052和底槽壁1054方向上所受到的合力为推动卡块1041向下移动的推力，其整体受力效果最为稳定，故在本实施例中，第一夹角106以及第二夹角108的取值优选为90°。
另一方面，设备处于日常收纳状态时，支撑件104转动至与承重件103整体相互平行层叠，此时支撑支架10整体成折叠状，随后转动承重件103，令支撑支架10整体与设备的轮廓相贴合，该状态即为支撑支架10的收纳状态。以下对支撑支架10使用状态的切换做进一步的细化：
需要将支撑支架10从收纳状态切换至使用状态时，转动承重件103整体，将承重台1031转至水平状态，随后转动支撑连杆1042，令支撑连杆1042上的卡块1041卡入到第二安装件102的卡槽105内，卡块1041通过槽口1053进入到卡槽105内，槽托1051对卡块1041起到承托的作用，此时承重台1031进入到承重状态；
需要将支撑支架10从使用状态切换至收纳状态时，握住支撑连杆1042带动卡块1041从槽口1053处拔出即可，拔出卡块1041过程中，因整体的施力方向为平行于底槽壁1054且指向槽口1053的方向，其产生的摩擦力较少，故此时能够轻易将卡块1041从卡槽105中拔出，随后转动承重件103，令支撑支架10整体与设备的轮廓相贴合即可。
与现有技术相对比，现有的可折叠式支架普遍只具备单向锁紧功能，其承重效果较为稳定，但承重台1031受到竖直向上的拉力时，其单向锁紧的设置无法对拉力进行限制，导致承重台1031将会在拉力的作用下发生抖动，若拉力力度较大时，甚至会出现承重台1031上翻的不稳定现象，其整体的使用稳定性较差，存在安全风险，而本方案所提供的支撑支架10，通过卡块1041与卡槽105巧妙的限位 结构设置，在运用本支撑支架10时，无论承重件103受到哪一方向上的外力，其竖直方向上的分力将会通过支撑件104传递到卡块1041上，在卡块1041与卡槽105的限位固定作用下，本支撑支架10能够实现稳定的双向锁紧效果，其整体使用稳定性极强，另外，卡块1041的拆卸过程极为简单，且拔出卡块1041的所需力度并不高，通过这样的结构设置，本支撑支架10不需牺牲使用稳定性，亦能够得到极为便捷的可拆卸性能，其整体实用性极强，具有优异的市场竞争力。
更优的是，在本实施例中，为了优化卡块1041与槽托1051的整体承托效果，卡块1041呈轴状设置，支撑件104与承重件103的铰接轴向与卡块1041的轴向平行，底槽壁1054与顶槽壁1052均与卡块1041相切，故卡块1041陷入到槽托1051内时，槽托1051与卡块1041呈贴合状，其整体的受力承托效果较佳。
更优的是，在本实施例中，卡块1041包括形成外缘接触面的橡胶套1043。
需要说明的是，橡胶套1043的摩擦系数较高，故卡块1041陷入到槽托1051时，卡块1041与底槽壁1054、顶槽壁1052所产生的摩擦力将较大，如此一来，卡块1041与卡槽105的限位效果将会更为稳定，进一步的提高了本支撑支架10的使用稳定性。
更优的是，在本实施例中，橡胶套1043与卡槽105呈过渡配合设置。
需要说明的是，正常使用本支撑支架时，若卡块1041与卡槽105之间的配合存在间隙，当卡块1041受到方向朝上的拉力时，卡块1041整体将会在间隙中产生移位动作，该移位动作将联动承重台1031整体进行抖动，故为了避免承重台1031在使用过程中发生抖动，需要对卡块1041与卡槽105之间配合作进一步的限定，橡胶套1043与顶槽壁1052、底槽壁1054可呈间隙配合、过渡配合或过盈配合设置，而在本实施例中，为了维持支撑支架10的使用稳定性，以及卡块1041的易拆卸性能，橡胶套1043与顶槽壁1052、底槽壁1054呈过渡配合设置，过渡配合的特性，是可能具有间隙，也可能具有过盈，但所得到的间隙和过盈量，一般较小，主要用于定位精确并要求便于拆卸的相对静止的联接，实现橡胶套1043与卡槽105间易于拆卸以及装配的定位联接，其稳定性以及灵活性均较高。
更优的是，在本实施例中，承重件103与第一安装件101的转动连接处，以及支撑件104与承重件103的铰接处均设置有阻尼器。
需要说明的是，阻尼器的设置能够提供耗减结构转动扭矩的阻力，其原理为耗减运动能量的装置，当需要将支撑支架10的使用状态切换至收纳状态时，人工将卡块1041脱离卡槽105后，支撑支架10整体能够在任意角度悬停，故收纳本支撑支架10时，极为便于操作人员对支撑支架10进行适应性的角度调整，其收纳稳定性亦具有较高的稳定性，进一步地提高了本支撑支架10的整体实用性。
在本实施例中，本支撑支架10可应用于加装在墙壁上的载物台，其中，第一安装件101以及第二安装件102均通过螺钉固定安装在墙壁上，第一安装件101位于第二安装件102上方，在承重台1031上固定设置有桌面。
示例性的，载物台不需使用时，可通过调整承重件103以及支撑件104，令承重件103、支撑件104 以及桌面成折叠式的收纳状态固定在墙壁上，收纳状态整体的占位体积极小，其便于收纳的效果较凸显。需要展开载物台进行使用时，转动承重件103至水平状态，随后转动支撑件104，令支撑件104上的卡块1041陷入到槽托1051上即可，此时载物台能够实现稳定的双向锁紧效果，其整体的使用稳定性极强，另外，卡块1041整体的拆卸过程极为简单，整体的折叠切换操作较为灵活，与现有的折叠式载物台相对比，具有使用稳定性高，且折叠方式简便的优点。
本实施例中的支撑支架10还能应用于爬楼机坐具的扶手结构上，其结构以及原理请参考上述所提及的方案，在此不再赘述。
需要说明的是，支撑支架10应用在爬楼机坐具时，角度B以及角度D将会随着爬楼机坐具的运动而顺应性地发生变动，故预设角度A、B、C、D的取值时，需要参考爬楼机坐具的实际运动倾斜数据，根据实际数据即可得出角度B与角度D的实际取值范围，此时，即可通过上述分析得出的公式推导出角度A与角度C的取值范围，最后即可完全定下角度A、B、C、D的取值。相应地，支撑支架10使用时，产生的压力F 1与卡块1041的重力G相对比，F 1的数值远大于G，故根据上述公式分析，与卡块1041重力G相关的数据可忽略不计，同理，承重件103承受拉力时，拉力F 2与卡块1041的重力G相对比，F 2的数值远大于G，故在上述公式中，与卡块1041重力G的相应数据可忽略不计，故预设角度A、B、C、D的取值时，可以采用简化方案，忽略角度B以及角度D进行分析取值。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (17)

  1. 一种支撑支架，包括第一安装件以及第二安装件，其特征在于，还包括承重件以及支撑件；
    所述承重件与所述第一安装件转动连接；
    所述支撑件一端与承重件转动连接，另一端设置有卡块；
    所述第二安装件上设置有卡接结构，所述卡接结构用于卡接所述卡块。
  2. 根据权利要求1所述的支撑支架，其特征在于，所述卡接结构包括与所述卡块相对应、供所述卡块陷入的卡槽；
    所述卡槽包括承托所述卡块的槽托、限制所述卡块上移的顶槽壁以及供所述卡块拔出脱离所述卡槽的槽口。
  3. 根据权利要求2所述的支撑支架，其特征在于，所述槽托延伸设置有底槽壁，所述底槽壁与所述顶槽壁向外延伸形成所述槽口。
  4. 根据权利要求3所述的支撑支架，其特征在于：
    所述卡块陷入所述卡槽时，所述承重件为承重状态，所述支撑件与所述底槽壁形成第一夹角，所述支撑件与所述顶槽壁形成第二夹角，在所述第一夹角和所述第二夹角分别处于对应预设角度范围内的情况下，通过所述底槽壁和/或所述顶槽壁与所述卡块之间的摩擦力，限制所述卡块脱离所述卡槽。
  5. 根据权利要求4所述的支撑支架，其特征在于，所述第二夹角小于或等于所述第一夹角。
  6. 根据权利要求4或5所述的支撑支架，其特征在于，所述第一夹角以及第二夹角的取值均为90°。
  7. 根据权利要求4所述的支撑支架，其特征在于，所述底槽壁与所述顶槽壁相互平行设置。
  8. 根据权利要求4所述的支撑支架，其特征在于，所述卡块与所述底槽壁和/或所述顶槽壁呈间隙配合或过盈配合或过渡配合设置。
  9. 根据权利要求4所述的支撑支架，其特征在于，所述卡块呈轴状设置，所述支撑件与所述承重件的转动轴向与所述卡块的轴向平行；
    所述卡块陷入所述卡槽时，所述卡块与所述槽托相贴合，且与所述顶槽壁相切。
  10. 根据权利要求9所述的支撑支架，其特征在于，所述卡块的轴向垂直于所述支撑件表面。
  11. 根据权利要求4所述的支撑支架，其特征在于，所述卡块包括形成外缘接触面的橡胶套。
  12. 根据权利要求4所述的支撑支架，其特征在于，所述承重件包括承重台以及安装连杆，所述安装连杆端部与所述第一安装件转动连接。
  13. 根据权利要求12所述的支撑支架，其特征在于，所述承重台与所述安装连杆一体式设置。
  14. 根据权利要求13所述的支撑支架，其特征在于，所述支撑件包括支撑连杆，所述支撑连杆一端铰接于所述承重台底部。
  15. 根据权利要求4所述的支撑支架，其特征在于，所述承重件为承重状态时，所述承重件呈水平设置。
  16. 根据权利要求4所述的支撑支架，其特征在于，所述承重件与所述第一安装件的转动连接处设置有阻尼器，所述支撑件与所述承重件的转动连接处亦设置有阻尼器。
  17. 一种扶手，其特征在于，包括权利要求1-16中任一项所述的支撑支架，还包括扶手垫，所述扶手垫固定设置于所述承重件。
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