Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B37/00—Nuts or like thread-engaging members
  • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
  • F16B37/041—Releasable devices
  • F16B37/042—Releasable devices locking by rotation

Definitions

• the present invention relates to the field of mechanical connectors, and more particularly to a snap nut assembly in which a nut engages a tubular member. Background technique
• Bolt-and-nut connections are often used in the mechanical field, usually by opening a hole in the connected piece, then placing the nut on the side of the connected piece, and inserting the bolt from the other side into the through hole, screwing the nut from the sides of the connected piece Connection operation. In a small space, or when the side of the connected piece is closed, when bolted and nut-joined, it can only be operated from one side. At this time, the nut is usually convexly welded to the connected piece, and then screwed in. bolt.
• the connected member is a thin plate, such as an automobile sheet metal member
• welding is liable to cause deformation of the sheet metal member
• the member to be joined is a non-metal material such as plastic
• welding is not easy to carry out.
• another option is a snap connection.
• the buckle is usually made of nylon or POM (polyoxymethylene) material. Compared with the bolt and nut connection, there is a poor anti-vibration effect, which leads to easy peeling and joint strength. Low, easy to loosen after repeated disassembly and other issues.
• the inner sleeve and the outer sleeve are processed by direct injection molding, and a PBT (polybutylene terephthalate) material is generally used. That is to say, the outer sleeve of the mediation nut is still only a buckle, which does not solve the problem that the anti-vibration effect of the buckle is easy to fall off, the connection strength is low, and the looseness is easy to be loosened after repeated disassembly and assembly.
• a PBT polybutylene terephthalate
• the object of the present invention is to overcome the above problems and to provide a snap nut assembly which can be easily connected by bolts and nuts without welding, to avoid thermal deformation due to welding, and is particularly suitable for use in a narrow space or on one side of a connector.
• the connection of the formwork in the closed case is particularly suitable for use in a narrow space or on one side of a connector.
• the present invention provides the following technical solutions:
• a snap nut assembly includes:
• the side wall of the nut body has a convex wing portion
• the outer wall of the tubular member having a circumferentially disposed flange having a plane extending from an axial end thereof and extending through a plane in which the upper end surface of the flange is located and a lower end surface a limiting slot, wherein the limiting slot is closed at one end and closed at the other end;
• a wing portion of the nut body enters the limiting groove from an open end of the limiting groove, and the wing portion protrudes from the limiting groove, so that the nut body is defined by the tubular member There is a space between the upper end surface of the wing and the lower end surface of the flange.
• the outer wall of the tubular member has a boss below the flange, and the wing may alternatively be arranged in a spatially intersecting manner with the boss.
• the boss has a radial extent that is less than a radial extent of the flange.
• the flange is located between the ends of the tubular member.
• the flanges are circumferentially arranged continuously, and a position of the flange extending through the limiting groove is provided with a recess allowing passage of the wing.
• the flanges are circumferentially spaced apart.
• a position of the flange extending through the limiting groove is provided with a recess allowing the wing to pass.
• the limiting slot extends between adjacent ones of the flanges.
• the nut body and the tubular member are assembled to form a nut assembly, and a hole is formed in the connected member, and the shape of the hole is required to be able to insert the tubular member while being able to catch the flange of the tubular member while
• the aperture has a recess that allows the wing to pass through.
• the nut assembly is inserted into the opened hole from one side of the connected member, the flange covers the periphery of the hole, and the wing portion passes from the notch to the other side of the connected member. Since the upper end surface of the wing portion is spaced from the lower end surface of the flange, the tubular member can be rotated to cause the wing portion to be caught on the other side of the connected member.
• connection operation is completed from one side of the connected member without the need for projection welding. Even if the connected member is a thin plate type material, the connected member is not thermally deformed, and the connection is convenient, and is suitable for a narrow space and is connected. One side of the piece is closed, and the connected piece is made of plastic material.
• the nut assembly When it is necessary to disassemble, the nut assembly is rotated so that the wing portion is aligned with the notch of the hole of the connected member, and the nut assembly can be pulled out, and the shape of the nut assembly is not affected even after repeated disassembly, and thus is suitable for repeated use. Therefore, the nut assembly has the advantages of convenient operation of the snap connection and high strength of the bolt-and-nut connection, and avoids the disadvantage that the projection nut causes thermal deformation of the connected member, the buckle connection is easy to fall off, and the utility model cannot be used repeatedly. Become a snap-on nut assembly.
• a boss is disposed below the flange on the outer wall of the tubular member, and after the nut assembly is inserted into the hole of the connecting member, the boss is engaged in the recess of the hole while the nut assembly is rotated, and the boss is restricted when the bolt is screwed.
• the rotation of the tubular member limits the rotation of the nut body, eliminating the need for a hand or tool to hold the tubular member, making the operation more convenient.
• wing portion and the boss are arranged in a space crisscross manner to ensure a sufficient contact area between the wing portion and the connected member to ensure a clamping effect.
• the flange is located between the ends of the tubular member to facilitate the connection of the plurality of layers by the connector. Further, the radial extension distance of the boss is smaller than the radial extension distance of the flange, so that the flange completely covers the hole including the notch on the connected member, so that the joint has a good seal effect. Similarly, the circumferentially continuous arrangement of the flanges also ensures a sealing effect at the joint.
• FIG. 1 is a perspective view of a nut assembly in a first embodiment of the present invention
• Figure 2 is a perspective view of the nut body in the first embodiment of the present invention
• Figure 3 is a top plan view of the nut body in the first embodiment of the present invention
• Figure 4 is a front elevational view showing the nut body in the first embodiment of the present invention.
• Figure 5 is a perspective view of a tubular member in a first embodiment of the present invention.
• Figure 6 is a top plan view of a tubular member in a first embodiment of the present invention.
• Figure 7 is a front elevational view showing a tubular member in a first embodiment of the present invention.
• Figure 8 is a schematic view showing the opening of the connected member of the nut assembly of the first embodiment of the present invention.
• 9 to 11 are schematic views showing a connection process of a nut assembly according to a first embodiment of the present invention.
• Figure 12 is a front elevational view showing the middle tubular member of the second embodiment of the present invention.
• Figure 13 is a top plan view of a tubular member in a third embodiment of the present invention.
• Figure 14 is a top plan view of a tubular member in a fourth embodiment of the present invention.
• nut assembly 100 Marked in the above figure: nut assembly 100, nut body 110, tubular member 120, threaded hole 111, upper end surface 112, lower end surface 113, side wall 114, wing portion 115, upper end surface 1151, lower end surface 1152, upper end 121, lower end 122
• nut body 110 and tubular member 120 are two separate members that are assembled together to form nut assembly 100.
• the nut body 110 has a threaded hole 111, an upper end surface 112, a lower end surface 113, and a side wall 114.
• the side wall 114 of the nut body 110 has two wings 115 projecting therefrom.
• the wing portion 115 also has an upper end surface 1151 and a lower end surface 1152.
• the tubular member 120 has two ends, one end labeled 121 (i.e., the upper end 121 in the illustration) and the other end labeled 122 (i.e., the lower end 122 in the illustration).
• the outer wall 123 of the tubular member 120 has a circumferentially continuous arrangement Flange 126. Below the flange 126, two bosses 127 are also provided on the outer wall 123.
• the radial extent of the boss 127 is less than the radial extent of the flange 126, i.e., the furthest distance L1 between the boss 127 and the axis of the tubular member 120 is less than the axis of the flange and the tubular member 120 in FIG.
• the farthest distance is L2.
• the flange 126 is located at the top of the tubular member 120 such that the upper end 121 coincides with the upper end surface 1261 of the flange 126.
• the limiting slot 125 extends from the upper end 121 of the tubular member 120 in the axial direction and continues to extend a distance toward the lower end 122 after the through flange 126, but does not reach the lower end 122, so for the limiting slot 125
• the upper end 121 is its open end, but at its lower end 122 its closed end.
• the limiting groove 125 penetrates the inner wall 124 and the outer wall 123 in the radial direction so that the wing portion 115 can protrude from the tubular member 120 when assembled.
• the position of the limiting groove 125 is opened, and a notch 1251 is opened, and the notch 1251 should be regarded as a limit.
• a portion of the bit slot 125 is opened.
• FIG. 8 there is shown the shape of the hole 210 to be opened on the joined member 200 to be joined by the nut assembly 100 of the present invention.
• the body portion of the aperture 210 can allow the tubular member 120 to be inserted while the aperture 210 also has two recesses 211 for the passage of the wing portion 115 from the aperture.
• FIG. 9 there is shown a view from the side of the connected member 200 where the joining operation is performed.
• the wing portion 115 of the nut body 110 is slid into the open end of the limiting groove 125, and the wing portion 115 continues to slide after passing through the notch 1251.
• the length of the portion of the limiting groove 125 below the flange 126 is greater than the height between the upper end surface 1151 and the lower end surface 1152 of the wing portion 115, so that the wing portion 115 slides down to the closing of the limiting groove 125.
• the wings 115 extend from the tubular member 120 and the nut body 110 is defined within the tubular member 120.
• the wings 115 Prior to the joining operation, the wings 115 need to be aligned with the notches 211 of the holes 210 and then inserted into the tubular member 120 such that the wings 115 reach the other side of the joined member 120. Since the boss 127 and the wing portion 115 are arranged in a space cross, the boss 127 and the flange 126 are simultaneously caught by the hole 210. Then, the tubular member 120 is rotated to cause the boss 127 to fall into the recess 211. Referring to Figure 11, the figure is after the rotating tubular member 120, from the connected member 200 Observe the view from the other side of the connection operation. As can be seen from Fig.
• the wing portion 115 catches the connected member 200 from the other side.
• the screw hole 111 is screwed into the bolt (not shown)
• the nut body 110 moves along the limiting groove 115 toward the flange 126, so that the wing 115 and the flange 126 clamp the connected member together. 200, the fixing of the relative position between the nut body 110 and the connected member 200 is achieved without welding. The entire operation is performed on one side of the connected member 200, so that it is not limited by space and is easy to operate.
• the boss 127 since the boss 127 is caught in the recess 211, the tubular member 120 does not rotate during the tightening of the bolt, so the nut body 110 does not rotate, and the tubular member 120 is not required to be clamped by a hand or a tool. Hold, making the operation more convenient. Since the radial extension distance of the boss 127 is smaller than the radial extension distance of the flange 126, and the flange 126 is circumferentially continuously arranged, the flange 126 can completely cover the connected member 200 including the concave after the connection is completed.
• the port 211 is provided with a hole 210 so as to provide a good sealing effect at the joint.
• the bolt is loosened, the wing 115 and the flange 126 are loosened by the connector 200, the boss 127 is pulled out, and the tubular member 120 is rotated to disengage the wing 115 from the recess 211 of the hole 210.
• the flange 126 is located between the upper end 121 and the lower end 122 of the tubular member 120, thus the flange 126 The upper end surface 1261 and the upper end 121 do not coincide.
• the portion above the flange 126 remains on the side where the joining operation is performed, such as in a car.
• the portion of the tubular member 120 left on the side where the joining operation is performed can function as a positioning, and it is more convenient to perform the joining operation of the plurality of layers by the connecting member, and thus it is advantageous.
• the flanges 126 are two circumferentially spaced, and may be more.
• the limit groove 125 extends through the flange 126, so that a notch 1251 is also formed in the flange 126.
• the spacing arrangement of the flanges 126 is more advantageous than the continuous arrangement, although the sealing effect is poor, but the material is more economical and the sealing is less demanding.
• the limiting groove 125 extends at a space between adjacent two flanges 126, thus The limiting groove 125 does not directly penetrate the flange 126, so the machining notch 1251 is also not required, and the processing is saved. From the perspective of processes and productivity, it is more advantageous. Meanwhile, it should be understood by those skilled in the art that although the limiting groove 125 does not directly penetrate the flange 126 in the fourth embodiment, since the limiting groove 125 penetrates the plane and the lower surface of the upper end surface 1261 of the flange 126 The plane in which the end face 1262 lies is therefore still within the scope of the flange 126.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Connection Of Plates (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Joints With Pressure Members (AREA)

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• 2013
  • 2013-03-07 CN CN201310073949.XA patent/CN103133496B/zh active Active
  • 2013-08-29 BR BR112015021877A patent/BR112015021877A2/pt active Search and Examination
  • 2013-08-29 WO PCT/CN2013/082578 patent/WO2014134909A1/zh active Application Filing

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