CN205059103U - Trailer arm assembly - Google Patents
Trailer arm assembly Download PDFInfo
- Publication number
- CN205059103U CN205059103U CN201520690407.1U CN201520690407U CN205059103U CN 205059103 U CN205059103 U CN 205059103U CN 201520690407 U CN201520690407 U CN 201520690407U CN 205059103 U CN205059103 U CN 205059103U
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- CN
- China
- Prior art keywords
- ball head
- arm
- arm assembly
- tow
- cue ball
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Abstract
The utility model provides a trailer arm assembly belongs to vehicle draw gear technical field. It has solved the problem of current trailer arm poor stability. This trailer arm assembly, its characterized in that includes the linking arm, the support arm links to each other with the linking arm, and the support arm has a mounting hole, the cue ball head has and is tube -shape and inserting and locates the extension in the mounting hole, vice bulb has the installation department, and the installation department insert locate in the extension and with extension threaded connection. The utility model has the advantages of simple structure, firm in connection, stable good.
Description
Technical field
The utility model belongs to vehicle tractor technical field, particularly a kind of tow arm assembly.
Background technology
Existing tow arm assembly generally comprises tow arm body and is connected to the trailer bulb on tow arm body, tow arm body is generally used for installing on the towing vehicle, trailer bulb is then generally used for being connected to pulling, fault car etc. are pulled on vehicle, two are had as existing tow ball is first, be divided into and be plugged on tow arm body up and down, concrete connection mode for install a sleeve on tow arm body, sleeve lining offers negative thread, two trailer bulbs have outside thread, two tow ball head threads are connected in sleeve, although two trailer bulbs and tow arm body can be fixed together by this structure, but because two trailer bulbs are solidly plugged in sleeve jointly, therefore when specifically installing, the end that there will be two trailer bulbs offsets and is close in sleeve, cause trailer bulb to be arranged on trailer bulb on tow arm body on tow arm body, occur the problem of axial motion, poor stability.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, propose a kind of structure simple, be connected firmly, the tow arm assembly of good stability.
The purpose of this utility model realizes by following technical proposal: a kind of tow arm assembly, is characterized in that, comprise
Connecting arm;
Hold-down arm, is connected with connecting arm, and hold-down arm has a mounting hole;
Cue ball head, has in tubular and is inserted in the extension in mounting hole;
Secondary bulb, has installation portion, and installation portion to be inserted in extension and to be threaded with extension.
In above-mentioned tow arm assembly, cue ball head also comprises
Cue ball head, spherical in shape;
Limiting section, in the form of annular discs, between cue ball head and extension, the external diameter of limiting section is greater than mounting hole aperture.
In above-mentioned tow arm assembly, secondary bulb also comprises
Secondary ball head, spherical in shape;
Location division, in the form of annular discs, between secondary ball head and installation portion, the external diameter of location division is greater than mounting hole aperture.
In above-mentioned tow arm assembly, the length of installation portion is less than the length of extension.
In above-mentioned tow arm assembly, cue ball head end and secondary ball head end face all offer shrinkage pool.
In above-mentioned tow arm assembly, shrinkage pool cross-sectional plane is all in interior hexagon.
In above-mentioned tow arm assembly, this tow ball assembly also comprises:
Latch, is arranged between connecting arm and hold-down arm, and latch one end has been bent to form stop part, and the other end radially offers jack;
Buckle, is made up of the Plug Division be connected as a single entity and holding division, and Plug Division is arranged in jack, and holding division is withheld on latch outer wall.
In above-mentioned tow arm assembly, connecting arm, in " L " type being made up of fixed part and connecting portion, fixed part and connecting portion evenly offers some knock holees, and above-mentioned latch is through a wherein knock hole on connecting portion.
In above-mentioned tow arm assembly, hold-down arm has two symmetrically arranged claw portions, the equal fold inward in outer end in two claw portions is formed with obvolvent portion, on the outer wall of connecting arm connecting portion, symmetry offers two chutes, connecting arm fixed position between two claw portions and obvolvent portion can move in corresponding chute.
In above-mentioned tow arm assembly, all have counterbore, in counterbore, be provided with cushion block at mounting hole two ends, support portion, above-mentioned cue ball head and secondary bulb run through corresponding cushion block respectively.
Compared with prior art, the utility model has the following advantages:
1, originally the sleeve and cue ball head that are used for connecting cue ball head and secondary bulb are designed to integrative-structure, so not only eliminate cue ball head originally for the part with sleeve connection, reduce productive costs, and the installation portion of secondary bulb be directly arranged in cue ball head extension in and both be threaded, thus the pitch extended between secondary bulb and cue ball head, what secondary bulb was connected with cue ball head is more firm, also make secondary bulb and cue ball head be installed on after on hold-down arm simultaneously, secondary bulb and cue ball head are pushed against on hold-down arm and can't produce axial motion, good stability.
2, when tow arm assembly is arranged on towing vehicle and is pulled between vehicle, the application force on level and vertical direction can be produced between connecting arm and hold-down arm simultaneously, be located on latch by buckle Plug Division, and be tight against by the holding division of buckle and lean against on latch, buckle is made firm to be arranged on latch, thus by the stop part combined action on buckle and latch by connecting arm and firm the linking together of hold-down arm, latch can not be spun off from connecting arm and hold-down arm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional structure schematic diagram of cue ball head in the utility model.
Fig. 3 is the sectional structure schematic diagram of secondary bulb in the utility model.
Fig. 4 is the structural representation of hold-down arm in the utility model.
Fig. 5 is the structural representation of latch in the utility model.
In figure, 1, connecting arm; 11, fixed part; 12, connecting portion; 13, chute; 14, knock hole; 2, hold-down arm; 21, mounting hole; 22, counterbore; 23, claw portion; 24, obvolvent portion; 3, cue ball head; 31, cue ball head; 32, limiting section; 33, extension; 34, through hole; 4, secondary bulb; 41, secondary ball head; 42, location division; 43, installation portion; 5, latch; 51, stop part; 52, jack; 6, buckle; 61, Plug Division; 62, holding division; 7, cushion block; 8, shrinkage pool.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figures 1 to 5, this tow arm assembly comprises connecting arm 1, hold-down arm 2, cue ball head 3 and secondary bulb 4, and wherein hold-down arm 2 is connected with connecting arm 1, and hold-down arm 2 has a mounting hole 21; Cue ball head 3 has in tubular and is inserted in the extension 33 in mounting hole 21; Secondary bulb 4 has installation portion 43, and installation portion 43 to be inserted in extension 33 and to be threaded with extension 33.
Originally the sleeve and cue ball head 3 that are used for connecting cue ball head 3 and secondary bulb 4 are designed to integrative-structure by this tow arm assembly, so not only eliminate cue ball head 3 originally for the part with sleeve connection, reduce productive costs, and the installation portion 43 of secondary bulb 4 be directly arranged in cue ball head 3 extension 33 in and both be threaded, specifically, offer outside thread on secondary bulb 4 installation portion 43 outer wall, at cue ball head 3 extension 33, there is a through hole 34, the inwall of through hole 34 offers negative thread, secondary bulb 4 installation portion 43 screw thread is tightened in the through hole 34 of cue ball head 3 extension 33, thus the pitch extended between secondary bulb 4 and cue ball head 3, namely extend screw thread when cue ball head 3 is connected with secondary both bulbs 4 and screw the length at position, what secondary bulb 4 was connected with cue ball head 3 is more firm, also make secondary bulb 4 and cue ball head 3 be installed on after on hold-down arm 2 simultaneously, secondary bulb 4 and cue ball head 3 are pushed against on hold-down arm 2 and can't produce axial motion, good stability.Simultaneously owing to eliminating sleeve, when mounted, only cue ball head 3 first need be inserted on hold-down arm 2, then be plugged on cue ball head 3 by secondary bulb 4, both rotations make both be in tightening state, convenient installation.
Further, the length of installation portion 43 is less than the length of extension 33, specifically, it is the hole depth that length that installation portion 43 offers male thread portion is less than through hole 34 on extension, this make when secondary bulb 4 installation portion 43 plug be tightened in cue ball head 3 extension 33 time, extension 33 has enough spaces that installation portion 43 can be screwed towards extension 33 inside, thus ensure that secondary bulb 4 and cue ball head 3 are installed on after on hold-down arm 2, secondary bulb 4 and cue ball head 3 are pushed against on hold-down arm 2 and can't produce axial motion, good stability.
Further, cue ball head 3 also comprises cue ball head 31 spherical in shape and limiting section 32 in the form of annular discs, and limiting section 32 is between cue ball head 31 and extension 33, and the external diameter of limiting section 32 is greater than mounting hole 21 aperture.Cue ball head 31 is mainly used in being pulled vehicle with pull, fault car etc. and is connected, the external diameter of limiting section 32 is greater than mounting hole 21 aperture, this makes when cue ball head 3 is solidly plugged in hold-down arm 2 mounting hole 21 together with secondary bulb 4, limiting section 32 is resisted against mounting hole 21 end, thus ensure that the situation that there will not be axial motion after cue ball head 3 and secondary bulb 4 are connected firmly, good stability.
Further, secondary bulb 4 also comprises secondary ball head 41 spherical in shape and location division 42 in the form of annular discs, location division 42 is between secondary ball head 41 and installation portion 43, the external diameter of location division 42 is greater than mounting hole 21 aperture, secondary ball head 41 on secondary bulb 4 and location division 42 act on identical with the cue ball head 31 on cue ball head 3 and limiting section 32, do not state at this tired.
Further, cue ball head 31 end face and secondary ball head 41 end face all offer shrinkage pool 8, by plugging spanner in shrinkage pool 8, thus make to screw between cue ball head 3 and secondary bulb 4, connect more firm, good stability, is also the object that shrinkage pool 8 is opened on Bulb Surface simultaneously, spanner to be plugged in shrinkage pool 8 and firmly rotating ballhead time, spanner can not to bulb surface.
Further, shrinkage pool 8 cross-sectional plane is all in interior hexagon, and this structure is convenient to be connected with spanner, and spanner is inserted in after in shrinkage pool 8, can easily revolute pair bulb 4 or cue ball head 3.
Further, this tow ball assembly also comprises latch 5 and buckle 6, and wherein latch 5 is arranged between connecting arm 1 and hold-down arm 2, and latch 5 one end has been bent to form stop part 51, and the other end radially offers jack 52; Buckle 6 is made up of the Plug Division 61 be connected as a single entity and holding division 62, and Plug Division 61 is arranged in jack 52, and holding division 62 is withheld on latch 5 outer wall.Connecting arm 1 and hold-down arm 2 mainly link together by latch 5, when tow arm assembly is arranged on towing vehicle and is pulled between vehicle, the application force that can simultaneously produce on level and vertical direction between connecting arm 1 and hold-down arm 2, be located on latch 5 by buckle 6 Plug Division 61, and be tight against by the holding division 62 of buckle 6 and lean against on latch 5, buckle 6 is made firm to be arranged on latch 5, thus by stop part 51 combined action on buckle 6 and latch 5 by connecting arm 1 and firm the linking together of hold-down arm 2, latch 5 can not be spun off from connecting arm 1 and hold-down arm 2.
Further, connecting arm 1 is in " L " type and be made up of fixed part 11 and connecting portion 12, and fixed part 11 and connecting portion 12 evenly offer multiple knock hole 14, and latch 5 is through a wherein knock hole 14 on connecting portion 12.Fixed part 11 is mainly used in being connected with towing vehicle, and the object offering multiple mounting hole 21 is the vehicle according to different model, thus adjustment hold-down arm 2 on connecting arm 1 without installation site.
Further, hold-down arm 2 has two symmetrically arranged claw portions 23, the equal fold inward in outer end in two claw portions 23 is formed with obvolvent portion 24, on the outer wall of connecting arm 1 connecting portion 12, symmetry offers two chutes 13, connecting arm 1 fixed part 11 between two claw portions 23 and obvolvent portion 24 can move in corresponding chute 13.By claw portion 23 and obvolvent portion 24 by connecting arm 1 obvolvent on hold-down arm 2, thus make connecting arm 1 circumference be fixed on hold-down arm 2, can slide in obvolvent portion 24 in chute 13 simultaneously, facilitates operability when installing between hold-down arm 2 and connecting arm 1.
Further, all have counterbore 22, be provided with cushion block 7 in counterbore 22 at support portion mounting hole 21 two ends, cue ball head 3 and secondary bulb 4 run through corresponding cushion block 7 respectively.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (10)
1. a tow arm assembly, is characterized in that, comprises
Connecting arm;
Hold-down arm, is connected with connecting arm, and hold-down arm has a mounting hole;
Cue ball head, has in tubular and is inserted in the extension in mounting hole;
Secondary bulb, has installation portion, and installation portion to be inserted in extension and to be threaded with extension.
2., in tow arm assembly according to claim 1, in above-mentioned tow arm assembly, the length of installation portion is less than the length of extension.
3., in tow arm assembly according to claim 1 and 2, cue ball head also comprises
Cue ball head, spherical in shape;
Limiting section, in the form of annular discs, between cue ball head and extension, the external diameter of limiting section is greater than mounting hole aperture.
4., in tow arm assembly according to claim 3, secondary bulb also comprises
Secondary ball head, spherical in shape;
Location division, in the form of annular discs, between secondary ball head and installation portion, the external diameter of location division is greater than mounting hole aperture.
5., in tow arm assembly according to claim 4, cue ball head end and secondary ball head end face all offer shrinkage pool.
6., in tow arm assembly according to claim 5, shrinkage pool cross-sectional plane is all in interior hexagon.
7., in tow arm assembly according to claim 1 and 2, this tow ball assembly also comprises:
Latch, is arranged between connecting arm and hold-down arm, and latch one end has been bent to form stop part, and the other end radially offers jack;
Buckle, is made up of the Plug Division be connected as a single entity and holding division, and Plug Division is arranged in jack, and holding division is withheld on latch outer wall.
8. in tow arm assembly according to claim 7, connecting arm, in " L " type being made up of fixed part and connecting portion, fixed part and connecting portion evenly offers some knock holees, and above-mentioned latch is through a wherein knock hole on connecting portion.
9. want in the tow arm assembly described in 8 according to right, hold-down arm has two symmetrically arranged claw portions, the equal fold inward in outer end in two claw portions is formed with obvolvent portion, on the outer wall of connecting arm connecting portion, symmetry offers two chutes, connecting arm fixed position between two claw portions and obvolvent portion can move in corresponding chute.
10. in tow arm assembly according to claim 1 and 2, all have counterbore, in counterbore, be provided with cushion block at mounting hole two ends, support portion, above-mentioned cue ball head and secondary bulb run through corresponding cushion block respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520690407.1U CN205059103U (en) | 2015-09-08 | 2015-09-08 | Trailer arm assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520690407.1U CN205059103U (en) | 2015-09-08 | 2015-09-08 | Trailer arm assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205059103U true CN205059103U (en) | 2016-03-02 |
Family
ID=55385699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520690407.1U Active CN205059103U (en) | 2015-09-08 | 2015-09-08 | Trailer arm assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205059103U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172497A (en) * | 2015-09-08 | 2015-12-23 | 宁波市鄞州龙腾工具厂 | Trailer arm assembly |
| CN105818621A (en) * | 2016-06-12 | 2016-08-03 | 唐刚 | Trailer arm assembly |
-
2015
- 2015-09-08 CN CN201520690407.1U patent/CN205059103U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172497A (en) * | 2015-09-08 | 2015-12-23 | 宁波市鄞州龙腾工具厂 | Trailer arm assembly |
| WO2017041320A1 (en) * | 2015-09-08 | 2017-03-16 | 宁波市鄞州龙腾工具厂 | Ball mount assembly |
| CN105818621A (en) * | 2016-06-12 | 2016-08-03 | 唐刚 | Trailer arm assembly |
| CN105818621B (en) * | 2016-06-12 | 2019-02-12 | 唐刚 | A kind of trailer arm component |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |