Four-wheeled folding trailer with coupling mechanism

Four-wheeled folding trailer with coupling mechanism

  • CN 105,416,354 A
  • Filed: 08/27/2013
  • Published: 03/23/2016
  • Est. Priority Date: 08/27/2013
  • Status: Active Application
First Claim
Patent Images

1. there is a Four-wheel foldable trailer for coupling mechanism, comprise front vehicle frame assembly (1), Rear frame component (2) and rotate the coupling mechanism (3) connecting front vehicle frame assembly and Rear frame component, it is characterized in that:

  • front vehicle frame assembly comprises front luggage carrier (11), two front wheel assemblies (12), the front apron (13) being arranged on front luggage carrier front end and the pull bars (14) be arranged on front apron, Rear frame component comprising rear luggage carrier (21), two rear wheel assemblies (22), being arranged on the back shield (23) of rear luggage carrier rear end and two attaching partss (24) for connecting back shield and rear luggage carrier, each front wheel assemblies comprises the front wheel carrier (122) with anterior cannula (121), front torsion spring (123) and rotates the front vehicle wheel (124) be arranged on front wheel carrier, each rear wheel assemblies comprises the rear wheel frame (222) with rear sleeve (221), rear torsion spring (223) and rotates the rear wheel (224) be arranged on rear wheel frame, front apron and front luggage carrier are rotationally connected, and front apron can turn to front luggage carrier superimposed, and the upper surface of adjacent front luggage carrier is arranged, front vehicle wheel can turn to front luggage carrier superimposed, back shield and rear luggage carrier are rotationally connected, and back shield can turn to rear luggage carrier superimposed, and the upper surface of adjacent rear luggage carrier is arranged, front luggage carrier and rear luggage carrier can turn to superimposed, and the basal surface that the basal surface of front luggage carrier adjoins rear luggage carrier is arranged, the left and right sides end of rear luggage carrier rear end is respectively provided with a rearwardly projecting rear traveller (211), and each rear traveller is provided with the rear limiting block platform (212) of annular, and the rear end of each rear limiting block platform is provided with multiple rear spacing teeth groove (213), the rear end of each rear traveller is provided with rear pin-and-hole (214), the front end of each attaching parts is provided with the first pivoted hole (241), rear gathering bearing surface (242), rear expansion bearing surface (243) and draws the rear arc transition face (244) of bearing surface and rear expansion bearing surface after connecting in, after each attaching parts and corresponding one, traveller is rotationally connected by the bearing pin (100) through the first pivoted hole and rear pin-and-hole (214), and the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, each rear expansion bearing surface is parallel to back shield place plane, and each rear gathering bearing surface is perpendicular to back shield place plane, the rear end of each attaching parts being provided with the second pivoted hole (245) for being rotationally connected with back shield, drawing bearing area (246) in and launching bearing area (247), draw bearing area in and be positioned at the side of the second pivoted hole away from the first pivoted hole, launch bearing area and be positioned at the side of the second pivoted hole close to the first pivoted hole, the front end of each rear sleeve is provided with the rear spacing double wedge (225) matched with each rear spacing teeth groove, after rear sleeve is set in corresponding one on traveller, rear torsion spring set is located on corresponding rear traveller, and is positioned within rear sleeve, back shield connects boss (231) after being provided with two, each rear connection boss is provided with rear axis hole (232) and the load flange (233) along rear luggage carrier horizontal direction evagination, each rear connection boss and a corresponding attaching parts are rotationally connected by the bearing pin (100) through rear axis hole and the second pivoted hole, load flange, in the process of rotating around the second pivoted hole along with rear connection boss, can be connected to the gathering bearing area of attaching parts and launch in bearing area, and then band follower link rotates, coupling mechanism (3) comprises two front pitmans (31) of the left and right sides end being arranged on front luggage carrier rear end, be fixedly installed on the locating wheel (32) on each front pitman, be arranged on pitman (33) after two of the left and right sides end of rear luggage carrier front end, be fixedly installed on the connection flange (34) on each rear pitman, the axostylus axostyle (35) that after running through two, pitman also can move back and forth in left-right direction, be fixedly installed on two annulars gear platform (36) on axostylus axostyle, for providing the screw thread spring (37) of reseting elasticity and the attachment bolt assembly (38) for being rotationally connected each rear pitman and a corresponding locating wheel for axostylus axostyle, the edge of each locating wheel is provided with two the arc shaped locating notches (321) be centrosymmetric, and each annular gear platform, in the process moved back and forth along with axostylus axostyle, embeds or shift out in a corresponding locating notch, described front vehicle frame assembly and Rear frame component can be superimposed after attachment bolt assembly (38) rotates 180 degree.

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