A four-link hinge mechanism capable of horizontal extension and flipping

Abstract

The present invention provides a horizontally retractable and flippable four-link hinge mechanism, which makes the opening and closing of the end cover simple, with a large opening range, and the opening remains stable and reliable. It includes a seat body mechanism, and a flip end cover is arranged at one end of the seat body structure, and is characterized in that it includes: a linear movable base; a guide element, which includes a linear guide track; a fixed shaft, which is fixedly arranged on the corresponding inner side of the seat body structure; an end cover; a pull rod; a swing arm; a limit positioning element, which includes a guide groove and a connecting member, and the guide groove includes a linear guide track groove and a locking limit groove, and the inner end of the linear guide track groove is provided with a locking limit groove obliquely arranged; at least part of the fixed shaft is embedded in the guide groove of the limit positioning element, and the fixed shaft includes a first state and a second state relative to the guide groove, and in the first state, the fixed shaft is embedded in the linear guide track groove, and in the second state, the fixed shaft is embedded in the locking limit groove.

Description

Technical Field

[0001] The invention relates to the technical field of an end cover flip structure, in particular to a four-link hinge mechanism capable of horizontal telescopic flipping. Background Art

[0002] The existing end cover structure of the gate used in the public passage field is not opened wide enough when it needs to be repaired, or the end cover is fixed to the corresponding opening position of the gate by screws, and the subsequent assembly requires unscrewing all the screws to complete the maintenance work of the inner cavity of the end cover; therefore, it is urgent to find a structure suitable for end cover operation that is easy to operate and has a large enough opening area. Summary of the invention

[0003] In view of the above problems, the present invention provides a four-link hinge mechanism that can be horizontally extended and flipped, which makes the opening and closing of the end cover simple, the opening amplitude is large, and the opening remains stable and reliable.

[0004] A horizontally retractable and flippable four-link hinge mechanism includes a seat structure, one end of the seat structure is provided with a flip end cover, and is characterized in that it includes:

[0005] Straight line moving base;

[0006] A guide element, comprising a linear guide track;

[0007] A fixed shaft, which is fixedly arranged on the corresponding inner side of the seat structure;

[0008] End caps;

[0009] Tie rods;

[0010] Swing arm parts;

[0011] The limiting positioning element comprises a guide groove and a connecting piece, wherein the guide groove comprises a linear guide track groove and a locking limiting groove, and the inner end of the linear guide track groove is provided with a locking limiting groove which is obliquely provided;

[0012] At least part of the fixed shaft is embedded in the guide groove of the position limiting and positioning element, and the fixed shaft has a first state and a second state relative to the guide groove. In the first state, the fixed shaft is embedded in the linear guide track groove, and in the second state, the fixed shaft is embedded in the locking position limiting groove;

[0013] The front end of the linear movable base is inserted into the linear guide track of the guide element, the rear end of the linear movable base is pivotally connected to the top of the end cover, one end of the pull rod is pivotally connected to the middle of the surface of the end cover facing the seat body mechanism, one end of the swing arm is pivotally connected to the relatively middle position of the linear movable base, the other end of the swing arm is pivotally connected to the other end of the pull rod, the inner middle position of the swing arm is pivotally connected to the outer end of the connecting member, and the outer end of the guide groove is connected to the inner end of the connecting member.

[0014] It is further characterized by:

[0015] The fixed shaft is a shaft body with a middle notch, the guide groove is a frame structure, the height of the guide groove is arranged corresponding to the outer diameter of the fixed shaft to ensure that there is no height shaking, and the guide groove is connected to the fixed shaft through the middle notch, so that the guide groove is arranged to move relative to the fixed shaft;

[0016] A lower convex limiting element is also provided on the lower surface of the linear movable base, and the lower convex limiting element is arranged toward the outer surface of the swing arm member, and the lower convex limiting element is used to prevent the end cover from continuing to flip after reaching a set angle;

[0017] The linear guide rail is specifically a retractable guide rail or a fixed guide rail;

[0018] The inner end of the linear guide track groove is provided with a locking limit groove obliquely facing the outer end, and the connecting part of the locking limit groove and the linear guide track groove is provided with a closing section, the opening size of the closing section is smaller than the diameter of the fixed shaft, ensuring smooth passage of the closing section under force application.

[0019] After adopting the above technical scheme, during the process of opening the end cover, when the end cover is pulled out horizontally, the linear movable base moves outward along the linear guide track, and the linear guide track groove moves outward along the fixed axis. The linear guide track groove moves horizontally to the maximum horizontal set distance relative to the fixed axis, and then the end cover is flipped over, and the pull rod drives the swing arm part to rotate, and the connection position of the linear guide track groove and the locking limit groove also rotates and moves horizontally around the fixed axis element with the rotation of the swing arm part. When the end cover element reaches the set maximum angle, the fixed axis element enters the locking limit groove, and the entire structure is in a structural self-locking state; during the closing process of the end cover, an external force is applied upward to the limiting positioning element to make the fixed axis disengage from the locking limit groove, and at the same time, the end cover is flipped over so that the guide groove overcomes the extrusion force of the closing section, so that the fixed axis enters the linear guide track groove, and then the end cover is pushed inward to close the end cover again; this makes the opening and closing of the end cover simple, the opening amplitude is large, and the opening remains stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the end cover of the present invention in an open state;

[0022] Figure 3 It is a schematic diagram of the self-locking state of the end cover of the present invention;

[0023] Figure 4 This is a schematic diagram of the unlocked and closed state of the end cover of the present invention;

[0024] The names corresponding to the serial numbers in the figure are as follows:

[0025] The seat body mechanism 10, the linear movable base 20, the guide element 30, the linear guide rail 31, the fixed shaft 40, the end cover 50, the pull rod member 60, the swing arm member 70, the limit positioning element 80, the guide groove 90, the linear guide rail groove 91, the locking limit groove 92, the closing section 93, the connecting member 100, and the downward convex limit element 110. DETAILED DESCRIPTION

[0026] A four-link hinge mechanism that can be horizontally extended and flipped, see Figure 1-Figure 4 , which includes a seat body mechanism 10, a linear movable base 20, a guide element 30, a fixed shaft 40, an end cover 50, a pull rod 60, a swing arm 70, and a position limiting and positioning element 80; a flip end cover 50 is provided at one end of the seat body structure 10, the guide element 30 is fixedly arranged at a height direction position of the seat body structure 10 corresponding to the end cover 50, and the guide element 30 includes a linear guide track 31; the fixed shaft 40 is fixedly arranged at the corresponding inner side of the seat body structure 10;

[0027] The limiting positioning element 80 includes a guide groove 90 and a connecting member 100. The guide groove 90 includes a linear guide track groove 91 and a locking limiting groove 92. The inner end of the linear guide track groove 91 is provided with a locking limiting groove 92 which is obliquely provided.

[0028] At least part of the fixed shaft 40 is embedded in the guide groove 90 of the limiting positioning element 80. The fixed shaft 40 has a first state and a second state relative to the guide groove 90. In the first state, the fixed shaft 40 is embedded in the linear guide track groove 91. In the second state, the fixed shaft 40 is embedded in the locking limiting groove 92.

[0029] The front end of the linear movable base 20 is inserted into the linear guide rail 31 of the guide element 30, and the rear end of the linear movable base 20 is pivotally connected to the top of the end cover 50. One end of the pull rod 60 is pivotally connected to the middle of the surface of the end cover 50 facing the seat body mechanism 10, and one end of the swing arm 70 is pivotally connected to the relatively middle position of the linear movable base 20. The other end of the swing arm 70 is pivotally connected to the other end of the pull rod 60. The inner middle position of the swing arm 70 is pivotally connected to the outer end of the connecting member 100, and the outer end of the guide groove 90 is connected to the inner end of the connecting member 100.

[0030] In a specific implementation, the fixed shaft 40 is a shaft body with a notch in the middle, and the guide groove 90 is a frame structure. The height of the guide groove 90 corresponds to the outer diameter of the fixed shaft 40 to ensure that there is no shaking in the height direction. The guide groove 90 is connected to the fixed shaft 40 through the notch in the middle, so that the guide groove 90 is movable relative to the fixed shaft 40.

[0031] A lower convex limiting element 110 is further provided on the lower surface of the linear movable base 20. The lower convex limiting element 110 is arranged toward the outer surface of the swing arm 70. The lower convex limiting element 110 is used to prevent the end cover 50 from continuing to flip after reaching a set angle.

[0032] The linear guide rail 31 is specifically a retractable guide rail or a fixed guide rail;

[0033] The inner end of the linear guide track groove 91 is provided with a locking limit groove 92 obliquely facing the outer end, and the connecting part of the locking limit groove 92 and the linear guide track groove 91 is provided with a closing section 93. The opening size of the closing section 93 is about 0.5 mm smaller than the diameter of the fixed shaft 40, ensuring that the closing section 93 passes smoothly under the force application state.

[0034] The arrow in the figure indicates the direction of force F or the direction of movement.

[0035] Its working principle is as follows: during the opening process of the end cover, when the end cover is pulled out horizontally, the linear movable base moves outward along the linear guide track, and the linear guide track groove moves outward along the fixed axis. The linear guide track groove moves horizontally to the maximum horizontal set distance relative to the fixed axis, and then the end cover is flipped over, and the pull rod drives the swing arm part to rotate, and the connection position of the linear guide track groove and the locking limit groove also rotates and moves horizontally around the fixed axis element with the rotation of the swing arm part. When the end cover element reaches the set maximum angle, the swing arm part is acted upon by the downward convex limit element, and the fixed axis overcomes the extrusion pressure of the closing section and enters the locking limit groove. When no external force is applied, the entire structure is in a structural self-locking state; during the closing process of the end cover, an external force is applied upward to the limiting positioning element to allow the fixed axis to disengage from the locking limit groove, and at the same time, the end cover is flipped over so that the guide groove overcomes the extrusion pressure of the closing section, allowing the fixed axis to enter the linear guide track groove, and then the end cover is pushed inward to close it again.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A horizontally retractable and flippable four-link hinge mechanism, comprising a seat structure, one end of which is provided with a flip-over end cap. It is characterized in that It includes: Straight line moving base; A guide element, comprising a linear guide track; A fixed shaft, which is fixedly arranged on the corresponding inner side of the seat structure; End caps; Tie rods; Swing arm parts; The limiting positioning element comprises a guide groove and a connecting piece, wherein the guide groove comprises a linear guide track groove and a locking limiting groove, and the inner end of the linear guide track groove is provided with a locking limiting groove which is obliquely provided; At least part of the fixed shaft is embedded in the guide groove of the position limiting and positioning element, and the fixed shaft includes a first state and a second state relative to the guide groove. In the first state, the fixed shaft is embedded in the linear guide track groove, and in the second state, the fixed shaft is embedded in the locking limit groove; The front end of the linear movable base is inserted into the linear guide track of the guide element, the rear end of the linear movable base is pivotally connected to the top of the end cover, the middle of the surface of the end cover facing the seat structure is pivotally connected to one end of the pull rod, the relatively middle position of the linear movable base is pivotally connected to one end of the swing arm, the other end of the swing arm is pivotally connected to the other end of the pull rod, the inner middle position of the swing arm is pivotally connected to the outer end of the connecting member, and the outer end of the guide groove is connected to the inner end of the connecting member; The fixed shaft is a shaft body with a middle notch, the guide groove is a frame structure, the height of the guide groove is arranged corresponding to the outer diameter of the fixed shaft, and the guide groove is connected to the fixed shaft through the middle notch; The lower surface of the linear movable base is also provided with a lower convex limiting element, and the lower convex limiting element is arranged toward the outer surface of the swing arm member; The linear guide rail is specifically a retractable guide rail or a fixed guide rail.

2. A horizontally retractable and flippable four-link hinge mechanism as claimed in claim 1, Features: The inner end of the linear guide track groove is provided with a locking limit groove obliquely facing the outer end, and the connecting part of the locking limit groove and the linear guide track groove is provided with a closing section, and the opening size of the closing section is smaller than the diameter of the fixed shaft.

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