CN201325567Y - Chain tension device of motorcycle engine - Google Patents
Chain tension device of motorcycle engine Download PDFInfo
- Publication number
- CN201325567Y CN201325567Y CNU200820162318XU CN200820162318U CN201325567Y CN 201325567 Y CN201325567 Y CN 201325567Y CN U200820162318X U CNU200820162318X U CN U200820162318XU CN 200820162318 U CN200820162318 U CN 200820162318U CN 201325567 Y CN201325567 Y CN 201325567Y
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- China
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- screw rod
- housing
- strut member
- automobile engine
- casing body
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Abstract
The utility model provides a chain tension device of a motorcycle engine, which belongs to the technical field of machinery and resolves the problems that current chain tension devices of motorcycle engines with great noise are unstable in working, easy to be out of work and the like. The chain tension device of a motorcycle engine comprises a casing body with a cavity, a screw rod inside the casing body and a threaded sleeve, wherein the threaded sleeve is connected outside the screw rod via screw threads, the screw rod and the casing body are in circumferentially rotary connection, and one end of the threaded sleeve extends out of the casing body and is circumferentially fixed onto the casing body and axially and slidably connected with the same. Moreover, a spring is sheathed on the screw rod inside the casing body, the spring with two ends respectively acting on the screw rod and the casing body enables the screw rod to keep circumferentially rotary tendency, the screw rod is axially and fixedly connected with the casing body, and a support structure for preventing the screw rod from swinging inside the casing body is disposed between the screw rod and the casing body. The utility model has the advantages of stable working, low noise, uneasily broken and damaged components and long service life.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of tension device, particularly a kind of chain tightening arrangement for automobile engine.
Background technology
Motor bike normally carries out transmission by chain, and owing to reasons such as use wearing and tearing, chain can extend and relax, and causes chain to break away from or sends phenomenon such as noise, the transmission deleterious of chain.For preventing above-mentioned phenomenon; usually tension device can be installed on motor cycle engine; the structure of existing chain tightening arrangement for automobile engine comprises the housing that has cavity, is provided with screw rod, swivel nut and torque spring in the housing; one end of screw rod is inserted in the housing; the other end is connected with swivel nut by screw thread, and the other end of swivel nut stretches out housing and circumferentially fixing with housing, and this torque spring is enclosed within outside the screw rod; one end and housing are connected, and the other end and screw rod the inner are connected.
One end of the swivel nut of the chain tightening arrangement for automobile engine of this structure leans on the chain of motor bike, reverses screw rod by spring and through the screw thread pair transmission swivel nut is just stretched out can to regulate the tensioner situation of chain.But the screw rod of above-mentioned chain tightening arrangement for automobile engine is an elongate rod, and afterbody is less, and in use mainly supports by the afterbody small end.When under abominable road conditions, travelling, because engine vibration is bigger, the stressed complexity of swivel nut head on the tension device, can be subjected to certain lateral forces this moment, can form a contrarotation power to screw rod, makes the screw rod contrarotation, cause the swivel nut retraction, make swivel nut protruding and make chain return to the tensioner state though torque spring can make screw rod be rotated in the forward, this has made chain be in the process that degree of tightness changes repeatedly, causes in the unstable and use of engine operation and produces noise; Secondly, the screw rod on the tension device is in the state of kinematic motion of forward and backward, makes the torque spring that is connected with screw rod tail be in the effect of frequent reverse stress, is easy to cause the torque component fracture damage, and tension device lost efficacy.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing tension device, provide a kind of simple in structure, be difficult for making chain in transmission process, to produce beating and make its stable transmission chain tightening arrangement for automobile engine.
The purpose of this utility model can realize by following technical proposal: a kind of chain tightening arrangement for automobile engine, comprise housing with cavity, be arranged in the housing screw rod and by being threaded in the outer swivel nut of screw rod, above-mentioned screw rod and housing circumferentially are rotationally connected, one end of described swivel nut stretches out housing and circumferentially fixedly is in axial sliding connection with housing, being with two ends on the screw rod in housing acts on respectively on screw rod and the housing and can make screw rod keep the spring of circumferential rotation trend, it is characterized in that, described screw rod and housing shaft be to captiveing joint, and be provided with the supporting construction that prevents that screw rod from swinging in housing between screw rod and housing.
Chain tightening arrangement for automobile engine of the present utility model is arranged on the motorcycle chain place, and an end roof pressure of swivel nut plays the effect of tensioner on chain.Because screw rod is that axial restraint is connected with housing, circumferentially fixing with screw flight bonded assembly swivel nut and housing, and the spring in the tension device has torsion elasticity after assembling, under the effect of spring, screw rod is keeping the trend of rotating in a circumferential direction, so when becoming flexible appearred in chain, swivel nut had protruding trend under the effect of screw rod, can realize the chain automatic tension.What be provided with between screw rod and housing prevents the supporting construction that screw rod is swung in housing, make screw rod when being subjected to complex external force, is difficult for forming contrarotation power and causes backward rotation, prevents whole swivel nut retraction, makes chain relaxation occur.
In above-mentioned chain tightening arrangement for automobile engine, described supporting construction comprises the strut member that is enclosed within on the screw rod, and described strut member and screw rod are connected and the external diameter of strut member is slightly less than the aperture of cavity.This strut member and screw rod are connected, and energy and screw rod circumferentially rotation in housing together.
In above-mentioned chain tightening arrangement for automobile engine, described strut member and screw rod are connected as a single entity.
As another kind of situation, in above-mentioned chain tightening arrangement for automobile engine, described supporting construction comprises the strut member that is enclosed within on the screw rod, and the external diameter of the outer ring of described strut member is slightly less than the aperture of cavity, the slightly larger in diameter of the inner ring of described strut member in the external diameter of screw rod.This strut member is captiveed joint with screw axial after being installed on the screw rod, circumferentially can rotate in housing.
In above-mentioned chain tightening arrangement for automobile engine, be provided with pad between described housing and the strut member, described pad is socketed on the screw rod.This pad is set avoids tension device strut member and housing inner end surface direct contact when vibrations, cause the housing wearing and tearing.
In above-mentioned chain tightening arrangement for automobile engine, described strut member is located on the inner of screw rod, and the external diameter of described strut member is greater than the external diameter of swivel nut.Strut member is arranged to this structure, makes screw rod when being subjected to complex external force, is difficult for forming contrarotation power and causes backward rotation, and its support effect is better, and makes whole tension device compact, dwindles the assembly size of tension device.
In above-mentioned motorcycle chain tension device, described strut member is the bracing ring of annular.
As another kind of situation, in above-mentioned motorcycle chain tension device, described strut member is the criss cross bracing frame.
In above-mentioned chain tightening arrangement for automobile engine, described spring is a torque spring.
In above-mentioned chain tightening arrangement for automobile engine, described spring is a wind spring.
In above-mentioned chain tightening arrangement for automobile engine, the inner end of described screw rod has groove.This groove makes things convenient for mounting tools to be used for rotary screw to tighten up spring, thereby makes tension device play the tensioner effect to chain.
Chain tightening arrangement for automobile engine of the present utility model has the following advantages:
1, this chain tightening arrangement for automobile engine is by adding the deep bid strut member on screw rod the inner, like this under the bigger situation of motorcycle driving vibrations, when the swivel nut head is subjected to complex external force, because the supporting role of strut member, can not cause the swivel nut retraction, thereby make chain remain stable tensioner state, make that engine operation is stable, noise is little, elements such as the wind spring in the tension device, torque spring also are difficult for fracture damage.
2, between strut member and housing, pad is set, prevents bracing ring and housing inner end surface direct contact, reduced the housing wearing and tearing, improved the service life of tension device.
Description of drawings
Fig. 1 be this chain tightening arrangement for automobile engine partly cut open structural representation.
Fig. 2 be this chain tightening arrangement for automobile engine another kind of structure partly cut open structural representation.
Fig. 3 is the structural representation of the screw rod that is socketed with bracing ring of this chain tightening arrangement for automobile engine.
Fig. 4 is the structural representation of the bracing frame of this chain tightening arrangement for automobile engine.
Fig. 5 is the structural representation of the screw rod that is socketed with bracing frame of this chain tightening arrangement for automobile engine.
Among the figure, 1, housing; 11, through hole; 2, screw rod; 21, groove; 3, swivel nut; 4, spring; 5, pad; 6, strut member; 61, bracing ring; 62, bracing frame; 7, guide pin bushing.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, this chain tightening arrangement for automobile engine comprises housing 1, screw rod 2, swivel nut 3, spring 4, pad 5 etc.
As shown in figures 1 and 3, between housing 1 and screw rod 2, be provided with the supporting construction that prevents that screw rod 2 from swinging at housing 1, this supporting construction comprises the strut member 6 that is socketed in screw rod 2 the inners, the bracing ring 61 that this strut member 6 is an annular also becomes integrative-structure with screw rod 2, the external diameter of bracing ring 61 is slightly less than the aperture of cavity, when adjusting screw rod 2, can only in housing 1, rotate, can not endwisely slip along screw rod 2 with screw rod 2.The external diameter of bracing ring 61 is arranged to external diameter greater than swivel nut 3, makes the afterbody of elongate threaded screw 2 have the support of deep bid, prevent that screw rod 2 from swinging in housing 1, cause screw rod 2 backward rotation and make swivel nut 3 retractions.
As depicted in figs. 1 and 2, also be provided with a pad 5 between the madial wall of bracing ring 61 and housing 1 afterbody, this pad 5 is enclosed within on the inner of screw rod 2, and this pad 5 can be avoided tension device bracing ring 61 and housing 1 inner end surface direct contact when vibrations, causes housing 1 wearing and tearing.
Be with on the screw rod 2 in housing 1 and make screw rod 2 keep the spring 4 of circumferential rotation trend, this spring 4 can be wind spring as shown in Figure 1, be arranged on the inner outside of screw rod 2, an end of wind spring fixes on the sidewall of housing 1, and the other end is plugged in the groove 21 of screw rod 2; Also can be torque spring 4 as shown in Figure 2, it is socketed in outside the guide pin bushing 7 that can stop that screw rod 2 moves axially and be connected with housing 1, and an end and the guide pin bushing 7 of this torque spring 4 are connected, and the other end and screw rod 2 the inners are connected.
This chain tightening arrangement for automobile engine is set at the chain place behind equipment.61 pairs of screw rods 2 of bracing ring in the tension device are played a supporting role, and can prevent that screw rod 2 from swinging in housing 1, and screw rod 2 can only circumferentially rotate at housing 1, can not move along housing 1 inner chamber; Swivel nut 3 one ends are by being threaded on the screw rod 2, and the other end stretches out housing 1 and acts on the chain, swivel nut 3 can only be when adjusting screw rod 2 axially mobile housing 1 in along screw rod 2, but can not do circumferential rotation.So the instrument by in-line passes through hole 11, be inserted in the groove 21 of screw rod 2 ends, can manual regulation screw rod 2, drive swivel nut 3 and move axially, thereby the tensioner state of chain is regulated.Screw rod 2 is remained have the trend that rotates in a circumferential direction and be arranged on wind spring in the housing 1, make swivel nut 3 remain on the state of tensioner chain, so in motorcycle driving vibrations process, swivel nut 3 can only be protruding, realize the elasticity of automatically regulating tensioner chain.
As shown in Figure 2, chain tightening arrangement for automobile engine in the present embodiment is corresponding with embodiment 1, strut member 6 can also be the bracing ring 61 of an independent annular, and the external diameter of bracing ring 61 is slightly less than the aperture of cavity, the slightly larger in diameter of the inner ring of strut member 6 in the external diameter of screw rod 2.Bracing ring 61 is socketed on the screw rod 2 when tension device is installed, and after installing, bracing ring 61 axially is fixed, and circumferentially can rotate.
Shown in Figure 4 and 5, chain tightening arrangement for automobile engine in the present embodiment and embodiment 1 are corresponding with enforcement 2, and wherein strut member 6 is for being criss cross bracing frame 62.
Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as housing 1, through hole 11, screw rod 2, groove 21, swivel nut 3, spring 4, pad 5, strut member 6, bracing ring 61, bracing frame 62, guide pin bushing 7 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (10)
1, a kind of chain tightening arrangement for automobile engine, comprise housing (1) with cavity, be arranged in the housing (1) screw rod (2) and by being threaded in the outer swivel nut (3) of screw rod (2), above-mentioned screw rod (2) circumferentially is rotationally connected with housing (1), one end of described swivel nut (3) stretches out housing (1) and circumferentially fixedly is in axial sliding connection with housing (1), be with two ends on the screw rod (2) in housing (1) and act on screw rod (2) and the last spring (4) that also can make the circumferential rotation trend of screw rod (2) maintenance of housing (1) respectively, it is characterized in that, described screw rod (2) is connected with housing (1) axial restraint, and is provided with the supporting construction that prevents that screw rod (2) from swinging in housing (1) between screw rod (2) and housing (1).
2, chain tightening arrangement for automobile engine according to claim 1, it is characterized in that, described supporting construction comprises the strut member (6) that is enclosed within on the screw rod (2), and described strut member (6) and screw rod (2) are connected and the external diameter of strut member (6) is slightly less than the aperture of cavity.
3, chain tightening arrangement for automobile engine according to claim 2 is characterized in that, described strut member (6) is connected as a single entity with screw rod (2).
4, chain tightening arrangement for automobile engine according to claim 1, it is characterized in that, described supporting construction comprises the strut member (6) that is enclosed within on the screw rod (2), the external diameter of the outer ring of described strut member (6) is slightly less than the aperture of cavity, the slightly larger in diameter of the inner ring of described strut member (6) in the external diameter of screw rod (2).
According to claim 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that 5, be provided with pad (5) between described housing (1) and the strut member (6), described pad (5) is socketed on the screw rod (2).
According to claim 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that 6, described strut member (6) is located on the inner of screw rod (2), the external diameter of described strut member (6) is greater than the external diameter of swivel nut (3).
According to claim 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that 7, described strut member (6) is the bracing ring (61) of annular.
According to claim 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that 8, described strut member (6) is criss cross bracing frame (62).
9, according to claim 1 or 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that described spring (4) is a torque spring.
10, according to claim 1 or 2 or 3 or 4 described chain tightening arrangement for automobile engine, it is characterized in that described spring (4) is a wind spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820162318XU CN201325567Y (en) | 2008-08-08 | 2008-08-08 | Chain tension device of motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820162318XU CN201325567Y (en) | 2008-08-08 | 2008-08-08 | Chain tension device of motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201325567Y true CN201325567Y (en) | 2009-10-14 |
Family
ID=41177543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820162318XU Expired - Lifetime CN201325567Y (en) | 2008-08-08 | 2008-08-08 | Chain tension device of motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201325567Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615509A (en) * | 2013-12-12 | 2014-03-05 | 玉环中本机械有限公司 | Tensioner of chain of motorcycle engine |
-
2008
- 2008-08-08 CN CNU200820162318XU patent/CN201325567Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615509A (en) * | 2013-12-12 | 2014-03-05 | 玉环中本机械有限公司 | Tensioner of chain of motorcycle engine |
| CN103615509B (en) * | 2013-12-12 | 2016-06-29 | 玉环中本机械有限公司 | A kind of chain tightening arrangement for automobile engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUHUAN ZHONGBEN MACHINERY CO., LTD. Free format text: FORMER OWNER: GAO XI Effective date: 20090918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090918 Address after: Zhujiang Road, Zhejiang, Kanmen, Haicheng Road, Yuhuan County Province, China: 317602 Patentee after: YUHUAN ZHONGBEN MACHINERY CO., LTD. Address before: Zhejiang Kanmen Haicheng road Yuhuan Yuhuan County China Machinery Co., Ltd., zip code: 317602 Patentee before: Gao Xi |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091014 |