Hinge structure, telescopic pedal, application and working method

Abstract

The invention discloses a hinge structure, a telescopic pedal, an application and a working method, solves the problem that a hinge structure in the prior art can only rotate or extend, and has the beneficial effects that the hinge structure can rotate and can also extend, and according to the specific scheme, the hinge structure comprises an inner core component and an outer shaft component; the outer shaft component is arranged on the outer side of the inner core component in a sleeving mode, at least one of the outer shaft component and the inner core component can do axial linear motion relative to the other one, the outer shaft component comprises a plurality of outer sleeve sections, every two adjacent outer sleeve sections are movably connected so that the two adjacent outer shaft components can be folded, and the inner core component comprises a plurality of inner core sections. Every two adjacent inner core sections are movably connected so that the inner core component can be folded, the length of each inner core section is matched with the length of the outer sleeve section on the outer side of the inner core section, when the outer shaft component is folded, the inner core component is also folded, and when the inner core sections and the outer sleeve sections are arranged in a staggered mode, the hinge structure is made to stretch and keep the stretching state.

Description

Technical Field

[0001] The invention relates to the field of mechanical connection structures, in particular to a hinged structure, a telescopic pedal, an application and a working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In many fields such as mechanical engineering, construction engineering, and aerospace, components with flexible connection and shape locking, that is, hinged structures, are used. Most of the existing hinged structures only have a single rotation function or a simple locking function. For example, common ordinary hinges can only rotate around a fixed axis and cannot automatically straighten and firmly lock under certain conditions. In some complex mechanical devices and engineering structures, such as auxiliary steps for disabled people in buses, foldable ladders, folding bed boards, etc., an articulated structure that can be flexibly rotated and stably locked in a specific position is needed to meet different working conditions and operation requirements. The existing auxiliary steps adopt a planar connecting rod mechanism with a complex structural setting. Most of these are designed for longer step structures, which only need to be closed normally after being recovered without too many requirements; but for step structures such as buses, the structure is shorter and needs to be retracted to the door when retracted, and cannot affect the opening or closing of the door. For example, Chinese patent application CN201811174634.3 (application date is 2018.10.19) discloses a pedal device for getting on and off the vehicle and a vehicle equipped with the pedal device, which is retracted by pulling a rigid foot pedal by an electric push-pull rod. The structural setting is simple, but when it is retracted, the entire device is retracted to the door, occupying a large space.

[0004] Of course, the above problems also exist in other fields. For existing hinged structures, the existing technology lacks a hinged structure that can effectively balance flexible rotation and the ability to maintain a specific position when stretched, which limits the further development and innovative application of technologies in related fields. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a hinged structure that can achieve automatic straightening and maintain a state, with convenient switching and high reliability.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A hinge structure comprises an inner core component and an outer shaft component, wherein the outer shaft component is sleeved on the outer side of the inner core component, and at least one of the outer shaft component and the inner core component can perform axial linear motion relative to the other. The outer shaft component comprises a plurality of outer sleeve segments, and two adjacent outer sleeve segments are movably connected to achieve foldability of the two adjacent outer shaft components. The inner core component comprises a plurality of inner core segments, and two adjacent inner core segments are movably connected to make the inner core component foldable. The length of each inner core segment is matched with the length of the outer sleeve segment outside it. When the outer shaft component is folded, the inner core component is also folded. When the inner core segment and the outer sleeve segment are staggered, the hinge structure is extended and maintained in an extended state.

[0008] In order to further achieve relative locking when the hinge structure is extended, the inner core member is engaged with the outer shaft member in the width direction to achieve engagement between the two in the width direction.

[0009] In some solutions, in order to further stabilize the locking, a fastener is detachably provided between the inner core member and the outer shaft member;

[0010] In the hinged structure as described above, two adjacent outer shell segments are hingedly connected, and two adjacent inner core segments are hingedly connected.

[0011] In the hinged structure as described above, a first connecting plate is provided between two adjacent outer sleeve segments, the first connecting plate is hingedly connected to the outer sleeve segments on both sides thereof, and the first connecting plate has a set length;

[0012] A second connecting plate is arranged between two adjacent inner core segments, and the second connecting plate is hingedly connected to the inner core segments on both sides thereof, and the length of the second connecting plate is the same as that of the first connecting plate.

[0013] In the hinged structure as described above, the length of the first connecting plate is greater than the distance between two adjacent outer sleeve sections to ensure the folding of the outer shaft component.

[0014] In the hinged structure as described above, the end of the outer sleeve segment is a first arc-shaped convex portion to provide space for folding the outer sleeve segment;

[0015] The end of the inner core segment is a second arc-shaped convex portion to provide space for the end of the inner core member.

[0016] In the hinge structure as described above, the inner core member and the outer shaft member are both hollow;

[0017] The transverse cross-sections of the inner core member and the outer shaft member are both rectangular to enhance the structural strength of the inner core member and the outer shaft member. Of course, the transverse cross-sections of the inner core member and the outer shaft member can also be other shapes.

[0018] In a second aspect, the present invention further provides a telescopic pedal, which adopts at least two groups of the hinged structures, the two groups of hinged structures are arranged opposite to each other, one end of the inner core component is fixed, and a pedal is connected between two oppositely arranged outer sleeve sections.

[0019] In a third aspect, the present invention further provides an application of an articulated structure, which is applied to a folding ladder, a folding bed board and a mechanical arm.

[0020] In a fourth aspect, the present invention further provides a working method of an articulated structure, comprising the following contents:

[0021] An inner core component and an outer shaft component are manufactured, wherein the outer shaft component is sleeved on the outer side of the inner core component, the outer shaft component comprises a plurality of outer sleeve segments, and two adjacent outer sleeve segments are movably connected to each other, and the inner core component comprises a plurality of inner core segments, and two adjacent inner core segments are movably connected to each other;

[0022] When the inner core segment corresponds to the outer sleeve segment one by one, the outer shaft component is folded by rotating the outer sleeve segment, and at the same time, the inner core component is also folded;

[0023] The outer shaft component is extended relative to the inner core component, or the inner core component is extended relative to the outer shaft component, so that the inner core segment and the outer sleeve segment are staggered, and the space between two adjacent outer shaft components is supported by the inner core segment, so that the hinge structure is extended and maintained in an extended state.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1) The hinged structure of the present invention is provided with an inner core component and an outer shaft component. The outer shaft component is sleeved on the outside of the inner core component, so that the outer shaft component and the inner core component cooperate to form a sleeve assembly. When in use, one end of the inner core component is connected to other components, and the outer shaft component is pushed outward relative to the inner core component, so that the length of the hinged structure can be extended. When extended, the inner core segment and the outer sleeve segment are staggered, and the space between two adjacent outer sleeve segments is supported by the inner core segment to avoid the rotation of the outer sleeve segment, so that the hinged structure is in extension. The outer shaft component will only be pushed under the action of external force. In this way, the entire hinged structure can be folded and extended, and can maintain a stable state when extended. The overall switching is relatively convenient and the reliability is relatively high.

[0026] 2) In the present invention, the inner core component is located inside the outer shaft component, and the inner core component is engaged with the outer shaft component in the width direction. This not only ensures the relative movement of the two, but also the two are in an engaged state in the width direction, and cooperates with the inner core segment to support the space between the two adjacent outer sleeve segments, effectively ensuring the elongation state of the hinged structure.

[0027] 3) In order to ensure the extended state of the hinged structure and avoid the situation in which the hinged structure is retracted due to external force acting on the end of the hinged structure, a fastener is detachably provided between the inner core member and the outer shaft member. The fastener fastens the inner core member and the outer shaft member, which is beneficial to maintaining the extended state when the hinged structure is extended. The fastener is detachably provided and is also convenient to remove when it needs to be retracted.

[0028] 4) In the present invention, a first connecting plate is arranged between two adjacent outer sleeve segments, and the first connecting plate is hingedly connected to the outer sleeve segments on both sides respectively; a second connecting plate is arranged between two adjacent inner core segments, and the second connecting plate is hingedly connected to the inner core segments on both sides respectively; the arrangement of the first connecting plate and the second connecting plate ensures the folding of the outer shaft component and the inner core component; and arc-shaped protrusions are arranged at the ends of the inner core segment and the outer sleeve segment to make space during the folding process, which is conducive to the smooth folding of the inner core component and the outer shaft component.

[0029] 5) The hinged structure in the present invention can be used for telescopic pedals, folding ladders and folding bed boards. Through the cooperation of the inner core component and the outer shaft component, the pedals, ladders or bed boards can be folded and can also be quickly unfolded. When unfolding, the inner core section and the outer sleeve section are staggered to ensure that the extended state is locked to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] Figure 1 is a schematic diagram of a hinge structure according to one or more embodiments of the present invention.

[0032] Figure 2 It is a front view of a hinged structure according to one or more embodiments of the present invention when it is unfolded.

[0033] Figure 3 is a schematic diagram of an outer shaft component in a hinge structure according to one or more embodiments of the present invention.

[0034] Figure 4 is a front view of an outer shaft component in a hinge structure according to one or more embodiments of the present invention.

[0035] Figure 5 is a schematic diagram of an inner core member in a hinged structure according to one or more embodiments of the present invention.

[0036] Figure 6 is a front view of an inner core member in a hinge structure according to one or more embodiments of the present invention.

[0037] Figure 7 It is a front view of a hinge structure according to one or more embodiments of the present invention when folded.

[0038] Figure 8 It is a schematic diagram of a hinge structure according to one or more embodiments of the present invention when folded.

[0039] Fig. 9 is a schematic diagram of a telescopic pedal according to one or more embodiments of the present invention.

[0040] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0041] Among them: 1. outer shaft component, 2. inner core component, 3. pin shaft, 4. pedal;

[0042] 1-1. Jacket segment, 1-2. First connecting plate, 1-3. First arc-shaped convex portion;

[0043] 2-1. Inner core segment, 2-2. Second connecting plate, 2-3. Second arc-shaped protrusion. DETAILED DESCRIPTION

[0044] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0046] As introduced in the background art, the hinged structure in the prior art can only realize the problem of rotation or extension. In order to solve the above technical problems, the present invention proposes a hinged structure.

[0047] Embodiment 1

[0048] In a typical embodiment of the present invention, reference is made to Figure 1 , Figure 2As shown, a hinged structure includes an inner core member 2 and an outer shaft member 1, the outer shaft member 1 is sleeved on the outer side of the inner core member 2, at least one of the outer shaft member 1 and the inner core member 2 can perform axial linear motion relative to the other, the outer shaft member 1 includes multiple outer sleeve segments 1-1, and two adjacent outer sleeve segments 1-1 are movably connected to achieve foldability of the two adjacent outer shaft members 1, the inner core member 2 includes multiple inner core segments 2-1, and two adjacent inner core segments 2-1 are movably connected to make the inner core member 2 foldable, the length of each inner core segment 2-1 is compatible with the length of the outer sleeve segment 1-1 outside it, when the outer shaft member 1 is folded, the inner core member 2 is also folded, and when the inner core segment 2-1 and the outer sleeve segment 1-1 are staggered, the hinged structure is extended and maintained in an extended state.

[0049] In some examples, the width or diameter of the inner core member 2 is 0-1 mm smaller than the width or inner diameter of the inner side of the outer shaft member 1; not only can the relative movement of the two be ensured, but the two can be moved in the axial direction and are in a locked state in the width direction, and the inner core segment 2-1 supports the space between the two adjacent outer sleeve segments 1-1, effectively ensuring the elongated state of the hinged structure;

[0050] In other examples, when the hinged structure is applied to a telescopic step or a folding ladder, because one side of the telescopic step will be in contact with the ground, in order to prevent the hinged structure from being retracted under the action of external force, openings are set on the sides of part or all of the outer sleeve sections, and fasteners such as bolts are set through the openings to abut against the side of the inner core component, thereby ensuring the stability of the hinged structure.

[0051] Alternatively, openings are also provided on the sides of part or all of the inner core segment 2-1, and fasteners such as bolts pass through the openings of the outer sleeve segment and the inner core segment, and the openings are threaded holes to achieve fastening.

[0052] It is easy to understand that when the hinged structure is applied to other components, such as a bed board, there is no need to lock it because the hinged structure is usually used in a horizontal state at this time.

[0053] In this embodiment, two adjacent outer shell segments 1-1 are hingedly connected, and two adjacent inner core segments 2-1 are hingedly connected;

[0054] Specifically, refer to Figure 3 and Figure 4 As shown, a first connecting plate 1-2 is arranged between two adjacent outer sleeve segments 1-1, and the first connecting plate 1-2 is connected to the outer sleeve segments 1-1 on both sides thereof through pin shafts 3, so that the first connecting plate 1-2 is hingedly connected to the outer sleeve segments 1-1 on both sides thereof, and the first connecting plate 1-2 has a set length, and the length of the first connecting plate 1-2 is greater than the distance between the two adjacent outer sleeve segments 1-1 to ensure the folding of the outer shaft component 1, and to avoid interference between one of the two adjacent outer sleeve segments 1-1 during the rotation process relative to the other outer sleeve segment;

[0055] refer to Figure 5 and Figure 6 As shown, a second connecting plate 2-2 is arranged between two adjacent inner core segments 2-1, and the second connecting plate 2-2 is connected to the inner core segments 2-1 on both sides thereof through a pin shaft 3, so that the second connecting plate 2-2 is hingedly connected to the inner core segments 2-1 on both sides thereof, and the length of the second connecting plate 2-2 is the same as that of the first connecting plate 1-2, so that when the outer shaft member 1 is folded, the inner core member 2 is also folded;

[0056] It is easy to understand that the pin 3 can also be replaced by a rivet.

[0057] In this embodiment, the widths of the first connecting plate 1-2 and the second connecting plate 2-2 may be the same or different. The width of the first connecting plate 1-2 is smaller than the thickness of the outer sleeve segment 1-1, and the width of the second connecting plate 2-2 is smaller than the thickness of the inner core segment 2-1.

[0058] Specifically, the inner core member 2 and the outer shaft member 1 are both hollow;

[0059] Moreover, the transverse cross-sections of the inner core member 2 and the outer shaft member 1 are both rectangular to enhance the structural strength of the inner core member 2 and the outer shaft member 1. Of course, the transverse cross-sections of the inner core member 2 and the outer shaft member 1 can also be other shapes.

[0060] It should be noted that the end of each outer sleeve segment 1-1 is a first arc-shaped convex portion 1-3 to provide space for the folding of the outer sleeve segment, and the centers of the two side walls at the end of the outer sleeve segment 1-1 protrude outward to form the first arc-shaped convex portion 1-3 of the outer sleeve segment; similarly, the end of each inner core segment 2-1 is a second arc-shaped convex portion 2-3 to provide space for the end of the inner core component 2, and the centers of the two side walls at the end of the inner core segment 2-1 protrude outward to form the second arc-shaped convex portion 2-3 of the inner core segment.

[0061] In this embodiment, the outer shaft component 1 is provided with three outer sleeve segments 1-1, and the inner core component 2 is provided with three inner core segments 2-1, wherein the lengths of the three outer sleeve segments 1-1 of the outer shaft component 1 are the same, and the length of the first inner core segment in the inner core component 2 is greater than the length of the first outer sleeve segment of the outer shaft component 1, so that the first inner core segment can be stably fixed to other components without affecting the folding of the inner core component 2; the length of the second inner core segment is the same as the length of the second outer sleeve segment, and the length of the third inner core segment is the same as the length of the third outer sleeve segment.

[0062] The hinge mechanism provided in this embodiment is provided with an inner core member 2 and an outer shaft member 1. The outer shaft member 1 is sleeved on the outer side of the inner core member 2, so that the outer shaft member 1 and the inner core member 2 cooperate to form a sleeve assembly. When in use, one end of the inner core member 2 is connected to other members, and the outer shaft member 1 is pushed outward relative to the inner core member 2, so that the length of the hinge structure can be extended; when the inner core member 2 and the outer shaft member 1 are in a coaxial position, each section of the two can rotate synchronously, and the inner core segment 2-1 and the outer sleeve segment 1-1 rotate synchronously. Through the arrangement of the first connecting plate and the second connecting plate, the whole body can rotate flexibly, refer to 7 and Figure 8 As shown, the inner core component 2 and the outer shaft component 1 are folded synchronously; when they need to be unfolded and flattened, the outer shaft sleeve and the inner shaft core are staggered so that the whole structure is straight and stable, ensuring that the structure can withstand the corresponding load without deformation or accidental rotation.

[0063] Embodiment 2

[0064] This embodiment provides a telescopic pedal. Fig. 9 As shown, at least two groups of hinged structures described in Example 1 are adopted, the two groups of hinged structures are arranged opposite to each other, one end of the inner core component is fixed, and the lower part of the door of a bus or other vehicle can be fixed, and a pedal 4 is connected between the two oppositely arranged outer sleeve sections, and the width of the pedal 4 is adapted to the length of the outer sleeve section 1-1, and slopes are arranged on both sides of the pedal 4.

[0065] Embodiment 3

[0066] The present embodiment provides a folding ladder, comprising a fixed leg, a top plate is arranged on the top of the fixed leg, a telescopic leg is arranged on the other side of the top plate relative to the fixed leg, the telescopic leg adopts at least two groups of hinge structures described in the first embodiment, the two groups of hinge structures are arranged opposite to each other, one end of the inner core component 2 is fixed, and a ladder plate is connected between two oppositely arranged outer shell sections, and the length, width, thickness and number of the inner core section and the outer shell section are changed to make the telescopic legs suitable for the folding ladder.

[0067] Embodiment 4

[0068] This embodiment provides a folding bed board, which adopts at least two groups of hinged structures described in Embodiment 1. The two groups of hinged structures are arranged opposite to each other, one end of the inner core component 2 can be fixed, and a bed board is connected between two oppositely arranged outer shell sections. The length, width, thickness and number of the inner core section and the outer shell section are changed to make the whole suitable for a folding bed board.

[0069] In addition, the hinged structure described in the first embodiment can also be applied to a robotic arm, which includes a fixed arm, which is fixedly connected to one end of the inner core component 2, and the hinged mechanism meets requirements such as flexible operation of the robotic arm joints.

[0070] Embodiment 5

[0071] This embodiment provides a working method of the hinge structure in Embodiment 1, including the following contents:

[0072] An inner core component 2 and an outer shaft component 1 are manufactured. The outer shaft component 2 is sleeved on the outer side of the inner core component 2. The outer shaft component includes a plurality of outer shell segments 1-1. Two adjacent outer shell segments are movably connected. The inner core component 2 includes a plurality of inner core segments 2-1. Two adjacent inner core segments are movably connected.

[0073] When the inner core segment 2-1 corresponds to the outer sleeve segment 1-1 one by one, the outer shaft component 1 is folded by rotating the outer sleeve segment, and at the same time, the inner core component 2 is also folded;

[0074] The outer shaft component 1 is extended relative to the inner core component 2, or the inner core component 1 is extended relative to the outer shaft component 2, so that the inner core segment 2-1 and the outer sleeve segment 1-1 are staggered, and the space between two adjacent outer shaft components is supported by the inner core segment, so that the hinge structure is extended and maintained in an extended state.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hinge structure, characterized in that: The invention comprises an inner core component and an outer shaft component, wherein the outer shaft component is sleeved on the outer side of the inner core component, and at least one of the outer shaft component and the inner core component can perform axial linear motion relative to the other. The outer shaft component comprises a plurality of outer sleeve segments, and two adjacent outer sleeve segments are movably connected to realize that the two adjacent outer shaft components can be folded. The inner core component comprises a plurality of inner core segments, and two adjacent inner core segments are movably connected to make the inner core component foldable. The length of each inner core segment is matched with the length of the outer sleeve segment on its outer side. When the outer shaft component is folded, the inner core component is also folded. When the inner core segment and the outer sleeve segment are staggered, the hinged structure is extended and maintained in an extended state.

2. A hinge structure according to claim 1, characterized in that: The inner core member is engaged and connected with the outer shaft member in the width direction; A fastener is detachably provided between the inner core member and the outer shaft member.

3. The hinge structure according to claim 1, characterized in that: Two adjacent outer shell segments are hingedly connected, and two adjacent inner core segments are hingedly connected.

4. The hinge structure according to claim 1, characterized in that: A first connecting plate is provided between two adjacent outer sleeve segments, the first connecting plate is hingedly connected to the outer sleeve segments on both sides thereof, and the first connecting plate has a set length; A second connecting plate is arranged between two adjacent inner core segments, and the second connecting plate is hingedly connected to the inner core segments on both sides thereof, and the length of the second connecting plate is the same as that of the first connecting plate.

5. A hinge structure according to claim 4, characterized in that: The length of the first connecting plate is greater than the distance between two adjacent outer sleeve sections to ensure the folding of the outer shaft component.

6. The hinge structure according to claim 1, characterized in that: The end of the outer sleeve segment is a first arc-shaped convex portion to provide space for folding the outer sleeve segment; The end of the inner core segment is a second arc-shaped convex portion to provide space for the end of the inner core member.

7. The hinge structure according to claim 1, characterized in that: The inner core component and the outer shaft component are both hollow; The transverse cross sections of the inner core component and the outer shaft component are both rectangular.

8. A telescopic pedal, characterized in that: At least two groups of hinge structures according to any one of claims 1 to 7 are used, the two groups of hinge structures are arranged opposite to each other, one end of the inner core component is fixed, and a pedal is connected between two oppositely arranged outer sleeve sections.

9. Use of a hinged structure according to any one of claims 1 to 7, characterized in that: Applied to folding ladders, folding bed boards and robotic arms.

10. A method for operating an articulated structure according to any one of claims 1 to 7, characterized in that: It includes the following: An inner core component and an outer shaft component are manufactured, wherein the outer shaft component is sleeved on the outer side of the inner core component, the outer shaft component comprises a plurality of outer sleeve segments, and two adjacent outer sleeve segments are movably connected to each other, and the inner core component comprises a plurality of inner core segments, and two adjacent inner core segments are movably connected to each other; When the inner core segment corresponds to the outer sleeve segment one by one, the outer shaft component is folded by rotating the outer sleeve segment, and at the same time, the inner core component is also folded; The outer shaft component is extended relative to the inner core component, or the inner core component is extended relative to the outer shaft component, so that the inner core segment and the outer sleeve segment are staggered, and the space between two adjacent outer shaft components is supported by the inner core segment, so that the hinge structure is extended and maintained in an extended state.

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