CN201512083U

CN201512083U - Trailer articulated assembly

Info

Publication number: CN201512083U
Application number: CN2009201603265U
Authority: CN
Inventors: 翁荣辉; 周盟桂; 张礼荣
Original assignee: Free Parable Design Co Ltd
Current assignee: Free Parable Design Co Ltd
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2010-06-23
Anticipated expiration: 2019-06-22

Abstract

A trailer articulated assembly comprises a hanger unit and a retaining ring unit, wherein a positioning portion and a linking portion of the hanger unit are respectively arranged on the two ends of a bent connecting portion, the axle of the positioning portion is perpendicular to the axle of the linking portion, and the positioning portion is used for being combined on a rear wheel shaft of a bicycle, moreover, a rod portion of the retaining ring unit is connected on the outer peripheral edge of a ring portion and is used for being assembled on a trailer handle, and the ring portion is used for being correspondingly buckled in a clasp hole of the linking portion. When the trailer handle is buckled and combined in the clasp hole of the linking portion through the ring portion, the axle of the clasp hole is the same as the advancing direction of the bicycle, the linking portion provides a buckling unit with multidirectional rotation freedom degree and space to prevent the retaining ring unit from extruding the linking portion to cause distortion and damage when the trailer is overturned or jolts, thereby the trailer articulated assembly has the effect of enhancing the life time of the retaining ring unit.

Description

Trailer hitch assembly

Technical field

The utility model is about a kind of trailer hitch assembly, especially a kind of hitch assembly that allows trailer directly be articulated in the bicycle hind axle.

Background technology

Existing trailer hitch assembly, please refer to shown in Fig. 1 and 2, it comprises a permanent seat 6 and an interface components 7, this permanent seat 6 has a body 61 and two tongues 62, these body 61 correspondences are locked on the bicycle hind axle 8, this two tongue 62 is arranged at the same side of this body 61, leave an assembly clearance between its two, and this two tongue 62 is respectively equipped with a through hole 621.This interface components 7 is chosen as a body of rod, its two ends are respectively an articulated section 71 and a joint portion 72, this articulated section 71 has a through hole 711, the articulated section 71 of this interface components 7 is embedded in this assembly clearance, and locate latch T contraposition by one and pass this through hole 711 and through hole 621, make this interface components 7 pivotable being positioned on this bicycle hind axle 8.In addition, this joint portion 72 is socketed on the trailer handle 9 in order to correspondence, and this joint portion 72 is provided with a knock hole 721, contraposition is inserted in the through hole on this knock hole 721 and the trailer handle 9 (indicating) by another fastening screw T, make this trailer handle 9 pivotable being connected on this bicycle hind axle 8 whereby, and can trail rear relative to moving of bicycle at this bicycle.

Existing trailer hitch assembly is by the S. A. of this fastening screw T as this interface components 7, make that this interface components 7 can be to pivoting by fastening screw T in this assembly clearance, so that in this bicycle is advanced, run into when turning, the rotation nargin that the correspondent transform direction can be arranged between this bicycle hind axle 8 and this trailer handle 9, promote the smooth degree that bicycle tows trailer whereby, to reduce the situation generation that trailer overturns.

Though existing trailer hitch assembly, makes that this trailer handle 9 is the turning cylinder rotation with this fastening screw T, provides opposing parallel in ground-surface side travel nargin whereby by the setting between this permanent seat 6 and this interface components 7 when advancing.Yet because this interface components 7 is limited between this two tongue 62, so the rotational freedom of single direction only can be provided the trailer in advancing, it still is not enough to adapt to the various situations of advancing of ground-surface, and influences the fluency of changing direction when trailer is advanced easily.Particularly, when this trailer meets with road bump in motion or overturns situation, can drive axially the rotate moment of this articulated section 71 along this interface components 7, as easy as rolling off a log extruding like this or collide this two tongue 62 causes member to damage.For these reasons, aforementioned existing trailer hitch assembly has necessity of being improved really.

The utility model content

The utility model provides a kind of trailer hitch assembly, and mainly being provides vertically and horizontal pivot degree of freedom simultaneously, avoids trailer excessive compression and damage or be out of shape between the member when advancing, and is main goal of the invention.

The utility model provides a kind of trailer hitch assembly, mainly has the effect that prevents that clasp breaks away from arbitrarily, further promotes in conjunction with fiduciary level, is less important goal of the invention.

The utility model provides a kind of trailer hitch assembly, mainly is can not pivot arbitrarily with vibration when trailer hitch assembly is fastened on the hind axle of bicycle, to promote in conjunction with fiduciary level, is another goal of the invention.

For reaching the previous designs purpose, technological means that the utility model used and the effect that can reach by this technological means include:

A kind of trailer hitch assembly, comprise a hook unit and a clasp unit, this hook unit has a location division, a convergence part and a bending connecting portion, this location division and convergence part are arranged at the two ends of this bending connecting portion respectively, this location division is provided with a combined hole, and this convergence part has a button hole; Make the axis of combined hole of this location division vertical mutually, and the combined hole of this location division is mounted on the bicycle hind axle in order to correspondence with the axis of the button hole of this convergence part.This clasp unit has a bar portion and a ring portion, and this bar portion is connected in the outer peripheral edges of this ring portion, is used to be assembled in a trailer handle, and this ring portion then is buckled in the button hole of this convergence part in order to correspondence, and the axis direction of this button hole is same as the working direction of vehicle.

Wherein the location division can be provided with a screw in addition, can be resisted against the back vent lateral margin of this bicycle hind axle by a locating part, reaches further locating effect.

The useful technique effect of the utility model trailer hitch assembly is: when this trailer handle is incorporated into the button hole of this convergence part by this ring portion hook, because the axis direction of this button hole is identical with the working direction of bicycle, and this convergence part provides multidirectional rotational freedom in this snapping unit and space, therefore the utility model can be avoided this clasp unit to push this convergence part when trailer overturns or jolt and form the distortion damage, and then has the effect that increases the service life.

In addition, end by this location division is provided with a screw, and this screw detouchable group is provided with a locating part, be resisted against the back vent lateral margin of this bicycle hind axle by this locating part, reach locating effect, vibrations when making the utility model can avoid this hook unit to be subjected to trailer when bicycle is advanced to advance or the influence of other external force and rotate arbitrarily further have the effect of lifting in conjunction with fiduciary level.

Description of drawings

Fig. 1: the exploded perspective view of existing trailer hitch assembly.

Fig. 2: the combination scheme drawing of existing trailer hitch assembly.

Fig. 3: the trailer hitch assembly of the utility model first embodiment is unassembled in the three-dimensional exploded view of bicycle hind axle.

Fig. 4: the solid of the trailer hitch assembly of the utility model first embodiment is decomposed and enlarged drawing.

Fig. 5: the side-looking of the trailer hitch assembly of the utility model first embodiment and the use scheme drawing of anticreep spare.

Fig. 6: the trailer hitch assembly of the utility model first embodiment is combined in the solid combination and the partial enlarged drawing of bicycle hind axle.

Fig. 7: the trailer hitch assembly of the utility model first embodiment is combined in the combination of side view of bicycle hind axle.

Fig. 8: the utility model first embodiment is along the part sectional view of the 8-8 line of Fig. 7.

Fig. 9: the trailer hitch assembly of the utility model second embodiment is unassembled in the three-dimensional exploded view of bicycle hind axle.

Figure 10: the solid of the trailer hitch assembly of the utility model second embodiment is decomposed and enlarged drawing.

Figure 11: the trailer hitch assembly of the utility model second embodiment is combined in the solid combination and the partial enlarged drawing of bicycle hind axle.

The main element nomenclature:

1 hook 11 location divisions, unit 111 combined holes, 112 openings

113 screws, 12 convergence parts, 121 button holes, 122 breach

123 undergauge protuberances, 13 bending connecting portions, 14 extensions, 141 spacing protuberances

1 ' hook 11 ' location division, unit, 15 hook spaces, 111 ' combined hole

2 clasp unit, 21 ring portions, 211 protective coveres, 212 valve

3 locating parts, 31 stopper sections, 22 combination sections, 4 anticreep spares

41 first perforation, 42 second perforation, 5 quick detach assemblies, 51 axostylus axostyles

52 switch wrench, 53 locked assemblies 54 press element α bending angle

6 permanent seats, 61 bodies, 62 tongues, 621 through holes

711 through holes, 72 joint portions, 7 interface components, 71 articulated sections

8 bicycle hind axles, 9 trailer handle T fastening screws

The specific embodiment

For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment of the present utility model cited below particularly, and conjunction with figs. are described in detail below:

Please refer to shown in Fig. 3 and 4, the trailer hitch assembly of the utility model preferred embodiment comprises a hook unit 1 and a clasp unit 2, this hook unit 1 correspondence is fixed on the bicycle hind axle 8, and present embodiment is implemented example with the bicycle hind axle 8 with quick detach assembly as one; In addition, 2 detouchables in this clasp unit are incorporated on the trailer handle 9, on this hook unit 1, further make this trailer handle 9 pivotable being connected on this bicycle hind axle 8 by these clasp unit 2 hooks, advance so that bicycle tows trailer.

Please refer to Fig. 3 to shown in Figure 5, the hook unit 1 of the utility model preferred embodiment is provided with a location division 11, one convergence part 12 and a bending connecting portion 13 and an extension 14, this location division 11 and convergence part 12 are arranged at the two ends of this bending connecting portion 13 respectively, this location division 11 may be selected to be a through hole or hook portion structure, because the location division 11 of present embodiment is chosen as a hook portion, so this location division 11 is formed with a combined hole 111 and an opening 112 simultaneously, this combined hole 111 is connected with this opening 112, and this opening 112 is formed at the position of this location division 11 in abutting connection with this bending connecting portion 13; In addition, this location division 11 is provided with a screw 113 in end, and these screw 113 contiguous these openings 112, for a locating part 3 corresponding lockings.This convergence part 12 also may be selected to be a through hole or hook portion structure, because the convergence part 12 of present embodiment is chosen as a hook portion equally, so this convergence part 12 is formed with a button hole 121 and a breach 122 simultaneously, and this breach 122 is formed at the peripheral region of this button hole 121 near this bending connecting portion 13, make this convergence part 12 become hook portion, and the width of this breach 122 just can pass through for this clasp unit 2 towards upper shed.In addition, this convergence part 12 is provided with a undergauge protuberance 123, this undergauge protuberance 123 is positioned at this convergence part 12 and forms on the internal face of this breach 122, make shortest distance between this undergauge protuberance 123 and this extension 14 be slightly less than the maximum caliber of this clasp unit 2 self whereby, prevent that further this clasp unit 2 breaks away from these button holes 121 arbitrarily.

This bending connecting portion 13 is a L shaped transom, makes that the axis (as the Y-axis of Fig. 3) of this button hole 121 is vertical mutually with the axis (as the X-axis of Fig. 3) of this combined hole 111.This extension 14 is arranged at the terminal part (i.e. this convergence part 12 do not join with this bending connecting portion 13 end) of this convergence part 12, and forms should breach 122 extending upward; Preferable 80 to 120 degree (as shown in Figure 5) that are chosen as of bending angle α between the inner peripheral surface of the medial surface of this extension 14 (promptly this extension 14 is towards the side of this breach 122) and this button hole 121, and the medial surface of this extension 14 is not taked circular-arc setting with respect to this bending angle α place, make the tangential direction of inner peripheral surface at this bending angle α place of this button hole 121 depart from this breach 122 whereby, and then allow this clasp unit 2 in this button hole 121, be not easy directly to enter this breach 122 when mobile, break away from convergence parts 12 of these hook unit 1 arbitrarily to avoid when bicycle is advanced this clasp unit 2.Again, this extension 14 is provided with a spacing protuberance 141, and is formed with a hook space 15 between the periphery wall of this spacing protuberance 141 and this convergence part 12.

Referring again to shown in Fig. 3 to 5; the clasp unit 2 of the utility model preferred embodiment has a ring portion 21 and a combination section 22; the interior ring side face of this ring portion 21 is provided with a protective cover 211; these protective cover 211 preferable general plasticity or elasticity shock-absorbing materials selected for use are made; alleviate the impact force between this clasp unit 2 and this convergence part 12 whereby, avoid the two to produce the situation generation of damage because of collision.The combination section 22 of present embodiment is chosen as a screw rod, and this ring portion 21 is arranged at an end of this screw rod, and the other end of this screw rod then is assembled on this trailer handle 9.

Please refer to shown in Fig. 4 to 5, the 4 preferable selections of the anticreep spare of present embodiment are made by the plastic material with elastic deformability, and the corresponding breach 122 that is arranged at this convergence part 12.This anticreep spare 4 is provided with one first perforation, 41 and 1 second perforation 42, this anticreep spare 4 is sheathed on the position of this convergence part 12 near this bending connecting portion 13 by this first perforation 41, the then corresponding button of this second perforation 42 is located on this extension 14, and being limited in this hook space 15, so that this anticreep spare 4 corresponding these breach 122 of sealing.

Please refer to shown in Fig. 3,6 to 8, when the utility model is assembled in this bicycle hind axle 8, at first this location division 11 is buckled at an axostylus axostyle 51 of being located at the quick detach assembly 5 on this bicycle hind axle 8, by a switch wrench 52 and a locked assembly 53 these location division 11 contrapositions are clamped on one and press between the back vent of element 54 and this bicycle hind axle 8.Because this axostylus axostyle 51 is placed in the combined hole 111 of this location division 11, and depending merely on this Clamping force that presses element 54 and bicycle hind axle 8 sides still may allow this hook unit 1 rotate relative to this axostylus axostyle 51, cause the position of this convergence part 12 to fix, so the utility model is provided with this locating part 3 by the end in this location division 11, and this locating part 3 has a stopper section 31 of protruding outwardly, so that allow this stopper section 31 be resisted against the back vent lateral margin (shown in Fig. 7 and 8) of this bicycle hind axle 8, can avoid this hook unit 1 when bicycle is advanced, vibrations when being subjected to trailer and advancing or the influence of other external force and rotate arbitrarily further have the effect of lifting in conjunction with fiduciary level.

Then; after finishing the fixing step between above-mentioned this location division 11 and this bicycle hind axle 8; this clasp unit 2 embeds in this button hole 121 by the breach 122 of this convergence part 12; though the caliber of this clasp unit 2 is slightly larger than the shortest distance between this undergauge protuberance 123 and this extension 14; but still can allow these ring portion 21 distortion by this breach 122 under the external force bestowing by the plastic deformation ability of this protective cover 211; embed in this button hole 121, so make this trailer handle 9 can be arbitrarily movable be incorporated into this convergence part 12.At last, by this anticreep spare 4 these breach 122 of sealing, prevent that further this clasp unit 2 breaks away from this convergence part arbitrarily, reaches the purpose of lifting in conjunction with fiduciary level.

After technical characterstic of the present utility model is to finish above-mentioned package program, the axis of the axis of this combined hole 111 and this bicycle hind axle 8 overlapping (being positioned at jointly on the X-axis of Fig. 3), and the axis of this button hole 121 then with the working direction identical (being positioned at jointly on the Y-axis of Fig. 3) of bicycle, because being subjected to bicycle, draws when advancing by general trailer, the overturning that is run into or the situation of jolting are that turning cylinder rotates generation with working direction (Y-axis) mostly, yet convergence part 12 of the present utility model is not to locate this clasp unit 2 with method of clamping, and this convergence part 12 can provide multidirectional rotational freedom and the space of this clasp unit 2 along Y and Z axle simultaneously, so that trailer overturns or when jolting this clasp unit 2 can slide along this convergence part 12, can not interfere compressing mutually, therefore can prevent that this clasp unit 2 from overturning or producing this hook unit 1 of extruding and formation distortion damage under the situation of jolting at trailer, further make to the utlity model has the effect that increases the service life.

Please refer to shown in Fig. 9 to 11, it discloses the take out device of the utility model second embodiment.Compared to first embodiment, the utility model of second embodiment is applied to not have traditional bicycle hind axle 8 ' that this quick detach assembly 5 is set; Again, the location division 11 ' of the hook unit 1 ' of present embodiment and convergence part 12 ' all are chosen as a location hole configuration, and this location division 11 ' has a combined hole 111 ', and this convergence part 12 ' has a button hole 121 '; In addition, the ring portion 21 of this clasp unit 2 is provided with a valve 212 in addition, and these valve 212 preferable pivotable being arranged on this ring portion 21 form a movable breach so that this valve 212 can pivot.

Please refer to shown in Figure 11ly, when the utility model is assembled in this bicycle hind axle 8 ', utilize a locking part 81 ' (for example: nut) should link up with unit 1 ' and be fixedly arranged on this bicycle hind axle 8 '; Then, these valve 212 these activity breach of formation pivot, so that this ring portion 21 can be passed this activity breach and this convergence part 12 ' is interlockingly connected, can omit the setting of this anticreep spare 4 whereby, can guarantee also simultaneously that this hook unit 1 ' is not easy and this clasp unit 2 forms and breaks off relations, and then effectively simplify member and lifting in conjunction with fiduciary level.

Claims

1. trailer hitch assembly is characterized in that comprising:

A hook unit, have a location division, a convergence part and a bending connecting portion, this location division and convergence part are arranged at the two ends of this bending connecting portion respectively, this location division is provided with a combined hole, the hind axle group of this this combined hole of hook unit by using and vehicle is established fixing, and this convergence part has a button hole; And

A clasp unit has a bar portion and a ring portion, and this bar portion is connected in the outer peripheral edges of this ring portion; Wherein the ring portion correspondence of this clasp unit is buckled in the button hole of this convergence part, and the axis direction of this button hole is same as the working direction of this vehicle, and the axis of this button hole forms vertical mutually with the axis of this combined hole.

2. trailer hitch assembly as claimed in claim 1 is characterized in that, this location division is a hook portion, and this location division is provided with an opening, and this opening is connected with this combined hole, and this opening is formed at the position of this location division in abutting connection with this bending connecting portion.

3. trailer hitch assembly as claimed in claim 2 is characterized in that, this location division is provided with locating part of a confession and is locked in its interior screw, and this screw is arranged at the position of contiguous this opening in this location division.

4. trailer hitch assembly as claimed in claim 1 or 2 is characterized in that, this convergence part is a hook portion, and this convergence part is provided with a breach, and this breach is formed at the peripheral region of this button hole near this bending connecting portion.

5. trailer hitch assembly as claimed in claim 4 is characterized in that, this hook unit is provided with an extension in addition, and this extending part is in the end of this convergence part.

6. trailer hitch assembly as claimed in claim 5, it is characterized in that, this convergence part is provided with a undergauge protuberance, and this undergauge protuberance is arranged on the internal face of this breach, and the shortest distance between this undergauge protuberance and this extension is less than the maximum caliber of this clasp unit self.

7. trailer hitch assembly as claimed in claim 1 or 2 is characterized in that, this ring portion is provided with a protective cover, and this protective cover is arranged at the interior ring side face of this ring portion.

8. trailer hitch assembly as claimed in claim 1 or 2 is characterized in that, the bar portion of this clasp unit is a screw rod.

9. trailer hitch assembly as claimed in claim 5, it is characterized in that, other is provided with an anticreep spare, this anticreep spare correspondence is arranged at this breach of this convergence part, this anticreep spare is provided with one first perforation and one second perforation, this first perforation is sheathed on this convergence part near the position of this bending connecting portion, and this second bores a hole then that correspondence is sheathed on this extension, and this anticreep spare seals this breach.

10. trailer hitch assembly as claimed in claim 1 or 2 is characterized in that, the ring portion of this clasp unit is provided with a valve in addition, and this valve is articulated on this ring portion.