Statically Determined Tape Hinge

Abstract

A hyperstatic tape measure hinge relates to the technical field of aerospace folding and unfolding mechanisms. The hyperstatic tape measure hinge comprises a hinge fixing portion, a hinge movable portion, tape measure pieces and a rotary locking assembly; the arc surface of at least one of the tape measure pieces faces upward, and the arc surface of at least one of the tape measure pieces faces downward; the tape measure pieces are respectively connected to the hinge fixing portion and the hinge movable portion; a plurality of tape measure pieces are alternately arranged at the top and bottom of the hinge fixing portion in sequence; the rotary locking assembly is respectively hinged to the hinge fixing portion and the hinge movable portion; the hinge movable portion rotates around the rotary axis of the rotary locking assembly; the rotary axis of the rotary locking assembly is located between the top and bottom of the hinge fixing portion, so that the tape measure hinge is in a hyperstatic state. The present invention provides a hyperstatic tape measure hinge to solve the technical problems existing in the prior art that the unfolding stiffness of the tape measure hinge is low, the tape measure pieces can be folded at any position, and the relative motion trajectory of the unfolded two objects cannot be predicted and there is a collision.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace folding and unfolding mechanisms, and in particular to a hyperstatic tape measure hinge. Background Art

[0002] Hinges are widely used in aerospace, and the tape hinge is one of them. The tape piece in the tape hinge provides power for the hinge to unfold, and after the hinge unfolds, the tape piece's own structural characteristics can provide a certain degree of rigidity for the hinge.

[0003] Traditional tape measure hinges have the characteristics of simple structure, light weight, and high unfolding precision, but they also have inherent defects. Since the tape measure piece in the tape measure hinge has a certain flexibility, its rigidity is low, and it can be folded at any position, the relative motion trajectory of the two objects connected to the tape measure hinge when unfolding is unpredictable, and there is a risk of collision with other structures during the unfolding process. In addition, as the requirements for tape measure hinges become higher and higher, the rigidity of existing tape measure hinges is difficult to meet the requirements when unfolded. Summary of the invention

[0004] The purpose of the present invention is to provide a hyperstatic tape measure hinge, so as to solve the technical problems existing in the prior art that the unfolding stiffness of the tape measure hinge is low and the tape measure sheet can be folded at any position, resulting in unpredictable relative motion trajectory of two objects and collision.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A hyperstatic tape measure hinge comprises a hinge fixing portion, a hinge movable portion, a tape measure sheet and a rotary locking assembly;

[0007] The number of the tape measure pieces is at least two; along the thickness direction of the tape measure hinge, the arc surface of at least one of the tape measure pieces faces upward, and the arc surface of at least one of the tape measure pieces faces downward;

[0008] Along the length direction of the tape measure hinge, one end of the tape measure is fixedly connected to the hinge fixing portion, and the other end is fixedly connected to the hinge movable portion;

[0009] Along the width direction of the tape measure hinge, a plurality of the tape measure pieces are alternately arranged at the top and bottom of the hinge fixing portion;

[0010] One end of the swivel locking assembly is hinged to the hinge fixing portion, and the other end is hinged to the hinge movable portion; the hinge movable portion is configured to rotate relative to the hinge fixing portion around the swivel axis of the swivel locking assembly;

[0011] When the tape measure hinge is in an unfolded state, along the thickness direction of the tape measure hinge, the rotation axis of the rotation locking assembly is located between the top and the bottom of the hinge fixing part, so that the tape measure hinge is in a hyperstatic state.

[0012] In a possible implementation, the swivel locking assembly includes a first swivel shaft, a second swivel shaft, a swivel pin and a locking pin;

[0013] The first end of the first rotating shaft is fixedly connected to the rotating pin, and the first end of the second rotating shaft is provided with a rotating pin hole matched with the rotating pin; wherein the axis of the rotating pin is the rotating axis;

[0014] The second end of the second rotating shaft is hinged to the hinge fixing portion; the second end of the first rotating shaft is hinged to the hinge movable portion;

[0015] The locking pin is arranged on the second rotating shaft; the locking pin is configured to lock the first rotating shaft when the tape measure hinge is unfolded.

[0016] In a possible implementation manner, the swivel pin hole is an oblong hole, and the swivel pin hole extends along the length direction of the tape measure hinge;

[0017] The first swivel shaft is provided with a locking hole; the locking pin configured to pass through the second swivel shaft when the tape measure hinge is in an unfolded state can extend into the locking hole to lock the first swivel shaft.

[0018] In a possible implementation manner, the number of the locking pins is two; the swivel pin is located between the two locking pins;

[0019] The locking pin includes a locking sleeve portion, a locking pin portion and an elastic member; the locking pin portion is arranged inside the locking sleeve portion, and the head end of the locking pin portion extends out of the locking sleeve portion; the elastic member is arranged between the locking pin portion and the locking sleeve portion, and the elastic member is configured to make the head end of the locking pin portion have a movement tendency to extend out of the locking sleeve portion; the locking sleeve portion is provided with a stop structure to prevent the locking pin portion from detaching.

[0020] In a possible implementation manner, the hinge movable portion is fixedly connected to a first hinge shaft; the first hinge shaft is hinged to the second end of the first rotating shaft rod through a first shaft sleeve;

[0021] The hinge fixing portion is fixedly connected with a second hinge shaft; the second hinge shaft is hinged to the second end of the second rotating shaft rod through a second shaft sleeve;

[0022] The first sleeve is provided with a first torsion spring; one end of the first torsion spring is connected to the first rotating shaft rod, and the other end is connected to the hinge movable part; the first rotating shaft rod is configured to have a movement tendency of unfolding under the drive of the first torsion spring;

[0023] The second sleeve is covered with a second torsion spring; one end of the second torsion spring is connected to the second rotating shaft, and the other end is connected to the hinge fixing part; the second rotating shaft is configured to have an unfolding movement tendency driven by the second torsion spring.

[0024] In a possible implementation manner, the hyperstatic tape measure hinge further includes a pressing member;

[0025] The hinge fixing portion is fixedly connected to the pressing member, so that one end of the measuring tape is fixed between the hinge fixing portion and the pressing member;

[0026] The hinge movable part is fixedly connected to the pressing piece so that the other end of the measuring tape is fixed between the hinge movable part and the pressing piece.

[0027] In a possible implementation manner, the hinge fixed portion and / or the hinge movable portion is a fixed seat;

[0028] The fixing seat comprises a seat body; the seat body is provided with a fixing seat arc surface portion corresponding to the measuring tape; the number of the fixing seat arc surface portions is the same as the number of the measuring tape;

[0029] The measuring tape is fixed on the arc surface of the fixing seat.

[0030] In a possible implementation manner, the pressing member includes a pressing arc surface portion and two pressing plane portions; the two pressing plane portions are fixedly connected via the pressing arc surface portion;

[0031] The pressing arc surface, the measuring tape and the fixing seat arc surface are fixedly connected in sequence;

[0032] The pressing plane portion is fixedly connected to the seat body;

[0033] The first screw passes through the compression arc surface portion and the tape measure piece in sequence, and is screwed to the arc surface portion of the fixed seat; the second screw passes through the compression plane portion, and is screwed to the seat body.

[0034] In a possible implementation manner, the fixing seat is provided with a fixing seat flange for fixed connection with an object; the fixing seat flange is provided with an object mounting hole;

[0035] A weight-reducing groove is provided on one side of the seat body away from the fixed seat arc surface.

[0036] In a possible implementation, along the width direction of the tape measure hinge, the rotary locking assembly is arranged on one side or both sides of the hinge fixing portion;

[0037] The number of the measuring tape pieces is three; along the width direction of the measuring tape hinge, the arc surface of the measuring tape piece in the middle is opposite to or opposite to the arc surfaces of the measuring tape pieces on both sides.

[0038] The beneficial effects of the present invention are mainly:

[0039] The hyperstatic tape measure hinge provided by the present invention has an arc surface of at least one of the tape measure pieces facing upwards, and an arc surface of at least one of the tape measure pieces facing downwards, so as to facilitate the unfolding of the tape measure hinge; one end of the rotary locking assembly is hinged to the hinge fixing part, and the other end is hinged to the hinge movable part, so that when the tape measure hinge is folded, the hinge movable part can rotate relative to the hinge fixing part around the rotation axis of the rotary locking assembly, providing a folding rotation axis for the tape measure piece, so that the relative motion trajectory of the two objects connected to the tape measure hinge when unfolded can be predicted, and the risk of collision between the tape measure hinge and other structures during the unfolding process is greatly reduced. When the tape measure hinge is in the unfolded state, the rotation axis of the rotary locking assembly is located between the top and bottom of the hinge fixing part, so that the tape measure hinge is in a hyperstatic state, so as to improve the rigidity of the tape measure hinge to a certain extent.

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of the structure of the hyperstatic tape measure hinge in an unfolded state provided by an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the structure of a folded state of a hyperstatic tape measure hinge provided by an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the structure of a fixing base provided in an embodiment of the present invention;

[0045] Figure 4 A schematic diagram of the structure of a rotary locking assembly provided in an embodiment of the present invention;

[0046] Figure 5 for Figure 4 An enlarged view of area A of the rotary locking assembly shown;

[0047] Figure 6 A partial enlarged view of a locking pin of a rotary locking assembly provided in an embodiment of the present invention;

[0048] Figure 7 A schematic diagram of the structure of a locking pin provided in an embodiment of the present invention;

[0049] Figure 8 for Figure 7 A half-section schematic diagram of the locking pin is shown.

[0050] Icons: 100-hinge fixing part; 200-hinge movable part; 300-tape measure; 400-pressing part; 500-swivel locking assembly; 510-first swivel shaft; 520-second swivel shaft; 521-swivel pin hole; 530-swivel pin; 540-locking pin; 541-locking sleeve; 542-locking pin; 543-elastic part; 544-blocking cap; 550-first torsion spring; 560-second torsion spring; 600-fixed seat; 610-seat body; 620-arc surface part of fixed seat; 630-convex edge of fixed seat; 640-weight reduction groove; 650-first threaded hole; 660-second threaded hole; 710-first screw; 720-second screw. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0058] Example

[0059] This embodiment provides a hyperstatic tape measure hinge; please refer to Figure 1-Figure 8 , Figure 1 and Figure 2 The following is a schematic diagram of the structure of the hyperstatic tape measure hinge in two states provided in this embodiment, wherein: Figure 1 The figure shows the structure of the hyperstatic tape hinge in the unfolded state. Figure 2 Shown is a schematic structural diagram of a hyperstatic tape measure hinge in a folded state; Figure 3 A schematic diagram of the structure of the fixing base provided in this embodiment, Figure 4 A schematic diagram of the structure of the rotary locking assembly provided in this embodiment, Figure 5 for Figure 4 The enlarged view of area A of the rotary locking assembly is shown. Figure 6 A partial enlarged view of the locking pin of the rotary locking assembly provided in this embodiment, Figure 6 The viewing angle shown is Figure 4 a front view of one of the stereograms shown; Figure 7 A schematic diagram of the structure of the locking pin provided in this embodiment, Figure 8 for Figure 7 A half-section schematic diagram of the locking pin is shown.

[0060] The hyperstatic tape measure hinge provided in this embodiment can be used for the deployment of solar wings and antennas in spacecraft, and can also be used for other mechanisms that need to be folded and unfolded.

[0061] See also Figure 1-Figure 8 As shown, the hyperstatic tape measure hinge (hereinafter referred to as the tape measure hinge) described in this embodiment includes a hinge fixing portion 100, a hinge movable portion 200, a tape measure piece 300 and a rotary locking assembly 500.

[0062] The number of tape measure pieces 300 is at least two; along the thickness direction of the tape measure hinge, the arc surface of at least one of the tape measure pieces 300 faces upward, and the arc surface of at least one of the tape measure pieces 300 faces downward; that is, the multiple tape measure pieces 300 include both tape measure pieces 300 with arc surfaces facing upward and tape measure pieces 300 with arc surfaces facing downward. The specific number of tape measure pieces 300 with arc surfaces facing upward and tape measure pieces 300 with arc surfaces facing downward can be determined according to the actual installation scenario. For example, the number of tape measure pieces 300 is three; along the width direction of the tape measure hinge, the arc surface of the tape measure piece 300 located in the middle is opposite to or opposite to the arc surfaces of the tape measure pieces 300 located on both sides.

[0063] Along the length direction of the tape measure hinge, one end of the tape measure piece 300 is fixedly connected to the hinge fixing part 100, and the other end of the tape measure piece 300 is fixedly connected to the hinge movable part 200; in this embodiment, the hinge fixing part 100 is relative to the hinge movable part 200, and is not absolutely fixed.

[0064] Along the width direction of the tape measure hinge, a plurality of tape measure pieces 300 are alternately arranged at the top and bottom of the hinge fixing part 100; that is, a plurality of tape measure pieces 300 are alternately arranged at the top and bottom of the hinge movable part 200. The plurality of tape measure pieces 300 are staggeredly installed to ensure that the tape measure hinge can be folded to a certain extent.

[0065] One end of the swivel locking assembly 500 is hinged to the hinge fixing portion 100, and the other end of the swivel locking assembly 500 is hinged to the hinge movable portion 200; the hinge movable portion 200 is configured to rotate around the swivel axis of the swivel locking assembly 500 relative to the hinge fixing portion 100; optionally, the swivel axis of the swivel locking assembly 500 is located in the middle of the swivel locking assembly 500, for example, the swivel axis of the swivel locking assembly 500 is located at the center position of the swivel locking assembly 500 or other non-center position. By providing the swivel locking assembly 500 in the tape measure hinge, a fixed swivel axis can be provided for the tape measure hinge, and the rigidity of the tape measure hinge can be improved to a certain extent.

[0066] When the tape measure hinge is in the unfolded state, along the thickness direction of the tape measure hinge, the rotation axis of the swivel locking assembly 500 is located between the top of the hinge fixing part 100 and the bottom of the hinge fixing part 100, that is, the rotation axis of the swivel locking assembly 500 is located between the top of the hinge movable part 200 and the bottom of the hinge fixing part 100, so that the tape measure hinge is in a hyperstatic state. By having the rotation axis of the swivel locking assembly 500 located between the top and the bottom of the hinge fixing part 100, the tape measure hinge is in a hyperstatic state, so as to improve the rigidity of the tape measure hinge to a certain extent.

[0067] The length, width and thickness directions of the tape measure hinge described in this embodiment all refer to the length, width and thickness directions when the tape measure hinge is in an unfolded state (i.e., the tape measure hinge is in an unfolded state). Along the thickness direction of the tape measure hinge, the hinge fixing portion 100 includes a corresponding top and bottom, and the hinge movable portion 200 also includes a corresponding top and bottom.

[0068] In the hyperstatic tape measure hinge described in this embodiment, the arc surface of at least one of the tape measure pieces 300 faces upward, and the arc surface of at least one of the tape measure pieces 300 faces downward, so as to facilitate the unfolding of the tape measure hinge; one end of the rotary locking assembly 500 is hinged to the hinge fixing part 100, and the other end is hinged to the hinge movable part 200, so that when the tape measure hinge is folded, the hinge movable part 200 can rotate relative to the hinge fixing part 100 around the rotation axis of the rotary locking assembly 500, providing a folding rotation axis for the tape measure piece 300, so that the relative motion trajectory of the two objects connected to the tape measure hinge when unfolded can be predicted, and the risk of collision between the tape measure hinge and other structures during the unfolding process is greatly reduced. When the tape measure hinge is in the unfolded state, the rotation axis of the rotary locking assembly 500 is located between the top and bottom of the hinge fixing part 100, so that the tape measure hinge is in a hyperstatic state, so as to improve the stiffness of the tape measure hinge to a certain extent.

[0069] See also Figure 1-Figure 8As shown, in an optional solution of this embodiment, the rotary locking assembly 500 includes a first rotary shaft 510 , a second rotary shaft 520 , a rotary pin 530 and a locking pin 540 .

[0070] The first rotating shaft 510 includes a corresponding first end and a second end, and the second rotating shaft 520 includes a corresponding first end and a second end. The first end of the first rotating shaft 510 is fixedly connected with a rotating pin 530, and the first end of the second rotating shaft 520 is provided with a rotating pin hole 521 that cooperates with the rotating pin 530; wherein, the axis of the rotating pin 530 is the rotating axis; the first rotating shaft 510 and the second rotating shaft 520 can rotate around the rotating pin 530, and the rotating pin 530 rotates in the rotating pin hole 521. Optionally, in order to ensure that the rotating pin 530 does not fall off from the rotating pin hole 521 during the rotation process, a retaining ring is connected to the end of the rotating pin 530. See. Figure 4 and Figure 5 As shown, optionally, the swivel pin hole 521 is an oblong hole, and the swivel pin hole 521 extends along the length direction of the tape measure hinge; the swivel pin hole 521 is an oblong hole, so that when the tape measure hinge is folded, the swivel pin 530 can move in the swivel pin hole 521, thereby realizing the swivel folding between the first swivel shaft rod 510 and the second swivel shaft rod 520, and then realizing the folding of the tape measure hinge. Through the swivel pin 530 and the swivel pin hole 521 with an oblong hole, the swivel locking assembly 500 itself has a swivel shaft with a small range of motion, which can greatly reduce the unfolding track range of the tape measure hinge. At the same time, after the tape measure hinge is unfolded, the swivel locking assembly 500 can be locked, and the swivel locking assembly 500 and the tape measure sheet 300 with the arc surface facing upward and the arc surface facing downward can form a hyperstatic structure, thereby increasing the stiffness of the tape measure hinge in the folding direction.

[0071] Optionally, the second end of the second rotating shaft 520 is hinged to the hinge fixing portion 100 , that is, the second rotating shaft 520 can rotate around the hinge fixing portion 100 .

[0072] Optionally, the second end of the first rotating shaft 510 is hinged to the hinge movable part 200; that is, the first rotating shaft 510 can rotate around the hinge movable part 200. By hingedly connecting the second end of the second rotating shaft 520 to the hinge fixing part 100 and the second end of the first rotating shaft 510 to the hinge movable part 200, it is further facilitated to realize the rotation and folding between the first rotating shaft 510 and the second rotating shaft 520, thereby realizing the folding of the hinge of the tape measure.

[0073] Optionally, a locking pin 540 is disposed on the second rotating shaft 520; the locking pin 540 is configured to lock the first rotating shaft 510 when the tape measure hinge is unfolded. By means of the locking pin 540, the first rotating shaft 510 is locked when the tape measure hinge is unfolded, so that the first rotating shaft 510 cannot rotate relative to the second rotating shaft 520, which can ensure that the tape measure hinge has a higher rigidity after unfolding, and can also make the tape measure hinge in a more stable state, and also to a certain extent increase the application range of the tape measure hinge.

[0074] Optionally, the first rotating shaft 510 is provided with a locking hole; the locking pin 540 configured to pass through the second rotating shaft 520 when the tape measure hinge is in the unfolded state can extend into the locking hole to lock the first rotating shaft 510. That is, when the tape measure hinge is in the unfolded state, the locking pin 540 passes through the second rotating shaft 520 and extends into the locking hole to lock the first rotating shaft 510.

[0075] Optionally, there are two locking pins 540; the swivel pin 530 is located between the two locking pins 540; by providing two locking pins 540, the locking of the first swivel shaft 510 by the locking pin 540 is improved, so that the hinge of the tape measure is in a more stable state.

[0076] See also Figure 7 and Figure 8 As shown, in an optional solution of this embodiment, the locking pin 540 includes a locking sleeve portion 541, a locking pin portion 542 and an elastic member 543; optionally, the elastic member 543 is a spring or other elastic structures.

[0077] The locking pin portion 542 is disposed inside the locking sleeve portion 541 , and a leading end of the locking pin portion 542 extends out of the locking sleeve portion 541 .

[0078] The elastic member 543 is disposed between the locking pin portion 542 and the locking sleeve portion 541, and the elastic member 543 is configured to make the head end of the locking pin portion 542 have a movement tendency to extend out of the locking sleeve portion 541; optionally, the elastic member 543 is always in a compressed state. Optionally, the elastic member 543 is disposed inside the locking sleeve portion 541.

[0079] Optionally, the lock sleeve 541 is provided with a stop structure for preventing the lock pin 542 from being disengaged. The stop structure is used to prevent the lock pin 542 from being disengaged from the inside of the lock sleeve 541.

[0080] Optionally, one end of the locking sleeve portion 541 away from the front end of the locking pin portion 542 is fixedly connected with a blocking cap 544 ; and the blocking cap 544 and the locking sleeve portion 541 form a cavity for accommodating the locking pin portion 542 .

[0081] See also Figure 4As shown, in an optional scheme of this embodiment, the hinge movable part 200 is fixedly connected to the first hinge shaft; the first hinge shaft is hinged to the second end of the first rotating shaft 510 through the first sleeve; through the first hinge shaft and the first sleeve, the first rotating shaft 510 is hinged to the hinge movable part 200.

[0082] See also Figure 4 As shown, in an optional scheme of this embodiment, the hinge fixing part 100 is fixedly connected with a second hinge shaft; the second hinge shaft is hinged to the second end of the second rotating shaft 520 through a second sleeve; through the second hinge shaft and the second sleeve, the second rotating shaft 520 is hinged to the hinge fixing part 100.

[0083] Optionally, in order to ensure smooth unfolding of the tape measure hinge, the first sleeve is provided with a first torsion spring 550; one end of the first torsion spring 550 is connected to the first rotating shaft 510, and the other end of the first torsion spring 550 is connected to the hinge movable part 200; the first rotating shaft 510 is configured to have an unfolding movement tendency under the drive of the first torsion spring 550; the first torsion spring 550 is used to drive the first rotating shaft 510 to move in the direction of unfolding of the tape measure hinge, which helps to unfold the tape measure hinge.

[0084] Optionally, the second sleeve is provided with a second torsion spring 560; one end of the second torsion spring 560 is connected to the second rotating shaft 520, and the other end of the second torsion spring 560 is connected to the hinge fixing portion 100; the second rotating shaft 520 is configured to have a movement tendency to unfold under the drive of the second torsion spring 560. The second torsion spring 560 drives the second rotating shaft 520 to move in the direction of unfolding the tape measure hinge, which helps to unfold the tape measure hinge.

[0085] See also Figure 1-Figure 3 As shown, in an optional solution of this embodiment, the hyperstatic tape measure hinge further includes a pressing member 400 .

[0086] The hinge fixing part 100 is fixedly connected to the pressing piece 400 so that one end of the measuring tape 300 is fixed between the hinge fixing part 100 and the pressing piece 400 ; the measuring tape 300 is firmly fixed to the hinge fixing part 100 through the pressing piece 400 .

[0087] The hinge movable part 200 is fixedly connected to the pressing member 400 so that the other end of the measuring tape 300 is fixed between the hinge movable part 200 and the pressing member 400. The measuring tape 300 is firmly fixed to the hinge movable part 200 by the pressing member 400.

[0088] In the optional solution of this embodiment, the structures of the hinge fixing part 100 and the hinge movable part 200 may be the same or different. Optionally, the hinge fixing part 100 and / or the hinge movable part 200 is a fixing seat 600; that is, the hinge fixing part 100 or the hinge movable part 200 is a fixing seat 600, or both the hinge fixing part 100 and the hinge movable part 200 are fixing seats 600.

[0089] See also Figure 3 As shown, in the optional solution of this embodiment, the fixed seat 600 includes a seat body 610; the seat body 610 is provided with a fixed seat arc surface portion 620 corresponding to the tape measure piece 300; the number of the fixed seat arc surface portion 620 is the same as the number of the tape measure piece 300. When the number of the tape measure piece 300 is multiple, the number of the fixed seat arc surface portion 620 is also multiple. Along the width direction of the fixed seat 600, multiple fixed seat arc surface portions 620 are arranged in sequence.

[0090] The tape measure 300 is fixed on the fixed seat arc surface 620, that is, the tape measure 300 is fixed between the fixed seat arc surface 620 of the seat body 610 and the pressing member 400. The fixed seat arc surface 620 can better fix the tape measure 300 on the fixed seat 600, that is, the tape measure 300 can be better fixed on the hinge fixed part 100 or the hinge movable part 200.

[0091] Optionally, the arc surface of the fixed seat arc surface portion 620 is the same as or similar to the arc surface of the measuring tape 300 .

[0092] In an optional solution of this embodiment, the pressing member 400 includes a pressing arc surface portion and two pressing plane portions; the two pressing plane portions are fixedly connected by the pressing arc surface portion.

[0093] The compression arc surface, the measuring tape 300 and the fixing seat arc surface 620 are fixedly connected in sequence to firmly fix the measuring tape 300 between the compression arc surface and the fixing seat arc surface 620 .

[0094] The clamping plane portion is fixedly connected to the base body 610 to further improve the tightness of the connection between the clamping member 400 and the base body 610 to further ensure the firmness of the installation of the measuring tape 300.

[0095] See also Figure 1-Figure 3 As shown, optionally, the first screw 710 passes through the compression arc portion and the tape measure 300 in sequence, and is screwed to the fixed seat arc portion 620. Optionally, the fixed seat arc portion 620 is provided with a first threaded hole 650 screwed to the first screw 710.

[0096] See also Figure 1-Figure 4As shown, optionally, the second screw 720 passes through the pressing plane portion and is screwed to the seat body 610. Optionally, the seat body 610 is provided with a second threaded hole 660 screwed to the second screw 720.

[0097] See also Figure 1 As shown, in an optional solution of this embodiment, the fixing seat 600 is provided with a fixing seat flange 630 for fixing connection with an object; the fixing seat flange 630 is used to facilitate the fixing connection of the tape measure hinge with the object.

[0098] Optionally, the fixing seat convex edge 630 is provided with an object mounting hole; the object mounting hole further facilitates the fixed connection between the tape measure hinge and the object. Optionally, the object mounting hole is a through hole or a threaded hole, or other holes. Optionally, the number of object mounting holes is multiple. Along the width direction of the tape measure hinge, the multiple object mounting holes are not colinear, so as to improve the firmness of the connection between the fixing seat 600 and the object, that is, to improve the firmness of the connection between the hinge fixing part 100 or the hinge movable part 200 and the object.

[0099] Optionally, the fixed seat 600 is provided with a swivel rod protrusion connected to the swivel locking assembly 500; through the swivel rod protrusion, the swivel locking assembly 500 is connected to the fixed seat 600, that is, the second end of the first swivel shaft 510 is hinged to the hinge movable part 200, and the second end of the second swivel shaft 520 is hinged to the hinge fixed part 100.

[0100] In an optional solution of this embodiment, a weight-reducing groove 640 is provided on one side of the seat body 610 away from the fixed seat arc surface 620. Optionally, the notch of the weight-reducing groove 640 faces downward or upward. The weight-reducing groove 640 is used to reduce the weight of the hinge of the tape measure.

[0101] See also Figure 1 As shown, in an optional solution of this embodiment, the rotary locking assembly 500 is arranged on one side or both sides of the hinge fixing portion 100 along the width direction of the tape measure hinge.

[0102] Optionally, there are two rotary locking assemblies 500; rotary locking assemblies 500 are provided on both sides of the hinge fixing portion 100; by providing rotary locking assemblies 500 on both sides of the hinge fixing portion 100, the jamming phenomenon of the tape measure hinge when unfolding can be reduced or avoided.

[0103] The tape measure hinge, hinge fixing part 100 and hinge movable part 200 described in this embodiment are respectively connected to the first object and the second object that need to be unfolded. Since the tape measure sheet 300 has a certain elasticity, it will store a certain elastic force after folding. When the first object and the second object need to be unfolded, the tape measure hinge is unfolded under the action of the tape measure sheet 300; when the tape measure hinge is installed, the arc surface of at least one of the tape measure sheets 300 faces upward, and the arc surface of at least one of the tape measure sheets 300 faces downward. After the tape measure sheet 300 returns to its original state, it can maintain a certain shape and provide a certain rigidity for the tape measure hinge; since the tape measure sheet 300 has a certain flexibility, it has no fixed rotation axis during the unfolding process. In order to fix the unfolding trajectory of the unfolded object, a rotation locking assembly 500 is designed in the tape measure hinge described in this embodiment, which provides a rotation axis for the tape measure hinge and can be locked after the unfolding is completed, providing a certain rigidity for the tape measure hinge. The rotation axis of the swivel locking assembly 500 is located between the top of the hinge fixing part 100 and the bottom of the hinge fixing part 100. After the swivel locking assembly 500 is unfolded and locked, the swivel locking assembly 500 and the tape measure 300 can form a hyperstatic structure, thereby increasing the stiffness of the tape measure hinge in the unfolding or folding direction.

[0104] The tape measure hinge described in this embodiment rotates around the axis of the swivel pin 530 of the swivel locking assembly 500. Since the tape measure piece 300 has a certain flexibility, it can undergo elastic deformation during the folding process. At the same time, the tape measure piece 300 can store a certain elastic potential energy during the elastic deformation process. Relying on the elastic potential energy of the tape measure piece 300, the tape measure can unfold automatically after the hinge is released.

[0105] The tape measure hinge described in this embodiment is a hyperstatic tape measure hinge; the tape measure hinge can be folded in two directions. When folding, the locking pin portion 542 of the locking pin 540 in the rotary locking assembly 500 is pulled out. At this time, the rotary locking assembly 500 can be shortened. The tape measure hinge can be folded only after the tape measure sheet 300 is elastically deformed. When folding, the tape measure hinge rotates along the rotary axis of the rotary locking assembly 500; because the tape measure sheet 300 has a certain flexibility and elasticity, a certain amount of elastic potential energy can be stored inside the tape measure sheet 300 after folding.

[0106] 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 hyperstatic tape measure hinge, characterized in that: The measuring tape hinge comprises a hinge fixing portion (100), a hinge movable portion (200), a measuring tape sheet (300) and a rotary locking assembly (500); The number of the measuring tape pieces (300) is at least two; along the thickness direction of the measuring tape hinge, the arc surface of at least one of the measuring tape pieces (300) faces upwards, and the arc surface of at least one of the measuring tape pieces (300) faces downwards; Along the length direction of the tape measure hinge, one end of the tape measure sheet (300) is fixedly connected to the hinge fixing portion (100), and the other end is fixedly connected to the hinge movable portion (200); Along the width direction of the tape measure hinge, a plurality of tape measure pieces (300) are alternately arranged at the top and bottom of the hinge fixing portion (100); One end of the rotary locking assembly (500) is hinged to the hinge fixing portion (100), and the other end is hinged to the hinge movable portion (200); the hinge movable portion (200) is configured to rotate relative to the hinge fixing portion (100) around the rotary axis of the rotary locking assembly (500); When the tape measure hinge is in an unfolded state, along the thickness direction of the tape measure hinge, the rotation axis of the rotation locking assembly (500) is located between the top and the bottom of the hinge fixing part (100), so that the tape measure hinge is in a hyperstatic state.

2. The hyperstatic tape measure hinge according to claim 1, characterized in that: The rotary locking assembly (500) comprises a first rotary shaft (510), a second rotary shaft (520), a rotary pin (530) and a locking pin (540); The first end of the first rotating shaft (510) is fixedly connected to the rotating pin (530), and the first end of the second rotating shaft (520) is provided with a rotating pin hole (521) that cooperates with the rotating pin (530); wherein the axis of the rotating pin (530) is a rotating axis; The second end of the second rotating shaft (520) is hinged to the hinge fixing portion (100); the second end of the first rotating shaft (510) is hinged to the hinge movable portion (200); The locking pin (540) is disposed on the second rotating shaft (520); the locking pin (540) is configured to lock the first rotating shaft (510) when the measuring tape hinge is unfolded.

3. The hyperstatic tape measure hinge according to claim 2, characterized in that: The swivel pin hole (521) is an oblong hole, and the swivel pin hole (521) extends along the length direction of the tape measure hinge; The first rotating shaft (510) is provided with a locking hole; the locking pin (540) is configured to pass through the second rotating shaft (520) when the tape measure hinge is in an unfolded state and can extend into the locking hole to lock the first rotating shaft (510).

4. The hyperstatic tape measure hinge according to claim 2, characterized in that: The number of the locking pins (540) is two; the swivel pin (530) is located between the two locking pins (540); The locking pin (540) comprises a locking sleeve portion (541), a locking pin portion (542) and an elastic member (543); the locking pin portion (542) is arranged inside the locking sleeve portion (541), and the head end of the locking pin portion (542) extends out of the locking sleeve portion (541); the elastic member (543) is arranged between the locking pin portion (542) and the locking sleeve portion (541), and the elastic member (543) is configured to make the head end of the locking pin portion (542) have a movement tendency to extend out of the locking sleeve portion (541); the locking sleeve portion (541) is provided with a stop structure for preventing the locking pin portion (542) from detaching.

5. The hyperstatic tape measure hinge according to claim 2, characterized in that: The hinge movable part (200) is fixedly connected to a first hinge shaft; the first hinge shaft is hinged to the second end of the first rotating shaft rod (510) via a first shaft sleeve; The hinge fixing portion (100) is fixedly connected to a second hinge shaft; the second hinge shaft is hinged to the second end of the second rotating shaft rod (520) via a second shaft sleeve; The first sleeve is provided with a first torsion spring (550); one end of the first torsion spring (550) is connected to the first rotating shaft (510), and the other end is connected to the hinge movable part (200); the first rotating shaft (510) is configured to have a movement tendency of unfolding under the drive of the first torsion spring (550); The second shaft sleeve is provided with a second torsion spring (560); one end of the second torsion spring (560) is connected to the second rotating shaft (520), and the other end is connected to the hinge fixing part (100); the second rotating shaft (520) is configured to have a movement tendency of unfolding under the drive of the second torsion spring (560).

6. The hyperstatic tape measure hinge according to any one of claims 1 to 5, characterized in that: Also includes a pressing member (400); The hinge fixing portion (100) is fixedly connected to the pressing piece (400), so that one end of the measuring tape (300) is fixed between the hinge fixing portion (100) and the pressing piece (400); The hinge movable part (200) is fixedly connected to the pressing piece (400), so that the other end of the measuring tape (300) is fixed between the hinge movable part (200) and the pressing piece (400).

7. The hyperstatic tape measure hinge according to claim 6, characterized in that: The hinge fixing portion (100) and / or the hinge movable portion (200) is a fixing seat (600); The fixed seat (600) comprises a seat body (610); the seat body (610) is provided with a fixed seat arc surface portion (620) corresponding to the measuring tape (300); the number of the fixed seat arc surface portions (620) is the same as the number of the measuring tape (300); The measuring tape (300) is fixed on the arc surface portion (620) of the fixing seat.

8. The hyperstatic tape measure hinge according to claim 7, characterized in that: The pressing member (400) comprises a pressing arc surface portion and two pressing plane portions; the two pressing plane portions are fixedly connected via the pressing arc surface portion; The pressing arc surface portion, the measuring tape (300) and the fixing seat arc surface portion (620) are fixedly connected in sequence; The pressing plane portion is fixedly connected to the seat body (610); The first screw (710) passes through the compression arc surface and the measuring tape (300) in sequence, and is screwed to the fixed seat arc surface (620); the second screw (720) passes through the compression plane portion, and is screwed to the seat body (610).

9. The hyperstatic tape measure hinge according to claim 7, characterized in that: The fixing seat (600) is provided with a fixing seat flange (630) for fixing and connecting with an object; the fixing seat flange (630) is provided with an object mounting hole; A weight-reducing groove (640) is provided on one side of the seat body (610) away from the fixed seat arc surface (620).

10. The hyperstatic tape measure hinge according to claim 1, characterized in that: Along the width direction of the tape measure hinge, the rotary locking assembly (500) is arranged on one side or both sides of the hinge fixing portion (100); The number of the measuring tape pieces (300) is three; along the width direction of the measuring tape hinge, the arc surface of the measuring tape piece (300) located in the middle is opposite to or opposite to the arc surfaces of the measuring tape pieces (300) located on both sides.

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