CN201074664Y - Chain tensioner of all-purpose petrol engine - Google Patents
Chain tensioner of all-purpose petrol engine Download PDFInfo
- Publication number
- CN201074664Y CN201074664Y CNU2007201249587U CN200720124958U CN201074664Y CN 201074664 Y CN201074664 Y CN 201074664Y CN U2007201249587 U CNU2007201249587 U CN U2007201249587U CN 200720124958 U CN200720124958 U CN 200720124958U CN 201074664 Y CN201074664 Y CN 201074664Y
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- tensioning
- tensioning piece
- spring
- chain
- piece
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Abstract
The utility model discloses a chain tensioner for an all-purpose petrol engine, which comprises a tensioning wheel (1), a tensioning axletree (2), a spring (3) and a tensioning bolt (4), wherein the tensioning wheel (1) is installed on the tensioning axletree (2) which is fixedly connected with one end of a tensioning block (5) whose the other end is movably sleeved on a tensioning block shaft (6), the tension block (5) can rotate around the tensioning block shaft (6), the tensioning bolt (4) is installed beside the tension block (5), and the spring is arranged between the tensioning bolt (4) and the tensioning block (5). The utility model has the advantages of simple structure, fewer spare parts, low cost and excellent reliability, and can satisfy the requirement of optimized design, and can effectively guarantee the employing performance and the life span of the tensioner.
Description
Technical field
The utility model relates to a kind of gasoline engine part, relates in particular to the general gasoline engines chain tensioning device.
Background technique
The chain-driven petrol engine mainly is that to produce engagement for fear of the chain between cam and the crankshaft sprocket when sag is excessive bad with chain tensioning device, prevents that oscillation phenomenon from appearring in chain, simultaneously also in order to increase the engagement wrapping angle of chain and sprocket wheel.General petrol engine chain tensioning device such as Fig. 6, shown in Figure 7, mainly form by Idle wheel 1, tension wheel shaft 2, tensioning piece combination 12, orientating box 13, spring 3 and tensioning bolt 4, wherein Idle wheel 1 is contained on the tension wheel shaft 2, tension wheel shaft 2 passes the sleeve pipe 14 that the tensioning piece makes up 12 ends, spacing by back-up ring 15, tensioning piece combination 12 is arranged in the orientating box 13, orientating box 13 and tensioning bolt 4 all are fixed on the crankcase cover, spring 3 one ends are spacing by tensioning bolt 4, and the other end stretches in the endoporus of tensioning piece combination 12.When the chain between cam and the crankshaft sprocket was strained, chain promoted Idle wheel 1 and moves, and Idle wheel 1 promotes tensioning piece combination 12 by tension wheel shaft 2 and sleeve pipe 14, made the combination 12 of tensioning piece at 13 li moving linearlies of orientating box, simultaneously holddown spring 3; When chain fluffed, spring 3 promoted tensioning piece combination 12 under the effect of spring-back force, made the combination 12 of tensioning piece at 13 li moving linearlies of orientating box, and the combination 12 of tensioning piece promotes tension wheel shaft 2 and Idle wheel 1 by sleeve pipe 14, makes Idle wheel 1 compress chain.Because existing chain tensioning device complex structure, component are more, and cost is higher, does not meet the requirement of optimal design, and poor reliability, problems such as Idle wheel comes off can occur.In addition, the tensioning piece is combined in moving linearly in the orientating box, and both long term wear cause easily that orientating box breaks, stretcher lost efficacy, and usability and working life is not guarantee all.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of general gasoline engines chain tensioning device of simple in structure, good reliability.
The technical solution of the utility model is as follows: a kind of general gasoline engines chain tensioning device, comprise Idle wheel, tension wheel shaft, spring and tensioning bolt, wherein Idle wheel is installed on the tension wheel shaft, its key is: described tension wheel shaft is fixedlyed connected with an end of a tensioning piece, the other end kink of this tensioning piece is on tensioning piece axle, and the tensioning piece can rotate around tensioning piece axle; Described tensioning bolt is installed in the next door of tensioning piece, between tensioning bolt and tensioning piece spring is set.
In the utility model, tensioning piece axle and tensioning bolt all are fixed on the crankcase cover, and Idle wheel is positioned at the next door of crankshaft sprocket, and with the chain engages between cam and the crankshaft sprocket.When chain was strained, chain promoted Idle wheel, the tensioning piece of fixedlying connected with tension wheel shaft was turned an angle, simultaneously with the length of spring compressed between tensioning bolt and the tensioning piece towards the direction of chain dorsad around tensioning piece axle; When chain fluffed, under the effect of recoil of spring power, spring promoted the tensioning piece, and the tensioning piece is turned an angle around the direction of tensioning piece axle towards chain, and Idle wheel compresses chain.
Compare with background technique, the utility model is simple in structure, and component are less, and cost is lower, has satisfied the requirement of optimal design, and good reliability, problem such as can not take place that Idle wheel comes off.The tensioning piece rotates around tensioning piece axle, wearing and tearing each other seldom, the usability and the working life of stretcher have effectively been ensured, it is bad to have avoided chain between cam and the crankshaft sprocket to produce engagement when sag is excessive, prevented that oscillation phenomenon from appearring in chain, increased the engagement wrapping angle of chain and sprocket wheel.
Above-mentioned tensioning piece is a box like structure, and described tension wheel shaft ecto-entad passes a side of tensioning piece, by nut check.The tensioning piece adopts box like structure, and processing is simple, and intensity is good; Adopt between tension wheel shaft and the tensioning piece to be threaded,, can play simplified structure, easy-to-mount effect by the mode of nut check.
In order to prevent that the tensioning piece from contacting with the end face of Idle wheel, to avoid interfering between Idle wheel and the tensioning piece, the middle part of above-mentioned tension wheel shaft is formed with annular boss, and this annular boss is between tensioning piece and Idle wheel.
Top at the above-mentioned tensioning piece back side is formed with journal stirrup by punching press, and an end of spring is sleeved on this journal stirrup, and the other end of spring is sleeved on the positioning table of tensioning bolt end.The positioning table of journal stirrup on the tensioning piece and tensioning bolt end both had been convenient to the spring installation, can play the guiding role to movement of springs again, made the running of tensioning piece reliable.
Beneficial effect: the utility model is simple in structure, and component are less, and cost is lower, and good reliability can satisfy the requirement of optimal design, can effectively ensure the usability and the working life of stretcher again.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the structural representation of tensioning piece in the utility model.
Fig. 4 is the structural representation of tensioning bolt in the utility model.
Fig. 5 is a user mode reference drawing of the present utility model.
Fig. 6 is the structural representation of background technique.
Fig. 7 is the plan view of Fig. 6.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model is made of parts such as Idle wheel 1, tension wheel shaft 2, spring 3, tensioning bolt 4, tensioning piece 5, tensioning piece axle 6 and nuts 7.Wherein tensioning piece 5 is made up of end face, bottom surface, the back side and two sides, is box like structure, and the side of two symmetries is approximate
The shape (see figure 3).Idle wheel 1 is positioned at the side on tensioning piece 5 tops, and is installed on the outer end of tension wheel shaft 2; The inner of tension wheel shaft 2 is a thread section, and this thread section ecto-entad passes the end of upper end, 5 one sides of tensioning piece, stretches in the tensioning piece 5, by nut 7 lockings.Middle part at tension wheel shaft 2 is formed with annular boss, and this annular boss contacts with the end face of Idle wheel 1 to prevent tensioning piece 5 between tensioning piece 5 and Idle wheel 1, avoids interfering between Idle wheel 1 and the tensioning piece 5.
As shown in Figure 1 and Figure 2, one end of tensioning piece axle 6 has spacing head, and the other end is a thread section, and the thread section of tensioning piece axle 6 passes from the via hole of end, lower end, tensioning piece 5 bi-side, and stretch in the screw on the crankcase cover (not drawing among the figure), tensioning piece 5 can rotate around tensioning piece axle 6; The spacing head of tensioning piece axle 6 is fitted with a side of tensioning piece 5, and is positioned at the same side with Idle wheel 1.
As among Fig. 1, Fig. 2, Fig. 3 and Fig. 4 further as can be known, tensioning bolt 4 is positioned at the rear side at tensioning piece 5 back sides, and is fixed on the crankcase cover (not drawing among the figure), is formed with positioning table 4a at tensioning bolt 4 on the end face at tensioning piece 5 back sides.The top at described tensioning piece 5 back sides is formed with journal stirrup 5a by punching press, this journal stirrup 5a and positioning table 4a point-blank, an end of spring 3 is sleeved on the journal stirrup 5a, the other end of spring 3 is sleeved on the positioning table 4a of tensioning bolt 4 ends.Journal stirrup 5a and positioning table 4a both be convenient to spring 3 and had been installed, and can the motion of spring 3 be play the guiding role again, made the running of tensioning piece 5 reliable.
As shown in Figure 5, be connected by chain 10 between cam 8 and the crankshaft sprocket 9, the breast wheel 11 that play the guiding role is installed between cam 8 and crankshaft sprocket 9, Idle wheel 1 is positioned at the next door of crankshaft sprocket 9, and with chain 10 engagements.When chain 10 tension, chain 10 promotes Idle wheels 1, and the tensioning piece 5 of fixedlying connected with tension wheel shaft 2 is turned an angle towards the direction of chain 10 dorsad around tensioning piece axle 6, simultaneously the spring between tensioning bolt 4 and the tensioning piece 53 is compressed; When chain 10 fluffs, under the effect of spring 3 spring-back forces, spring 3 promotes tensioning piece 5, tensioning piece 5 is turned an angle around the direction of tensioning piece axle 6 towards chain 10 together with Idle wheel 1, Idle wheel 1 compresses chain 10, thereby it is bad effectively to have avoided chain between cam and the crankshaft sprocket to produce engagement when sag is excessive, has prevented that oscillation phenomenon from appearring in chain, has increased the engagement wrapping angle of chain and sprocket wheel.
Claims (4)
1. general gasoline engines chain tensioning device, comprise Idle wheel (1), tension wheel shaft (2), spring (3) and tensioning bolt (4), wherein Idle wheel (1) is installed on the tension wheel shaft (2), it is characterized in that: described tension wheel shaft (2) is fixedlyed connected with an end of a tensioning piece (5), the other end kink of this tensioning piece (5) is on tensioning piece axle (6), and tensioning piece (5) can rotate around tensioning piece axle (6); Described tensioning bolt (4) is installed in the next door of tensioning piece (5), between tensioning bolt (4) and tensioning piece (5) spring (3) is set.
2. general gasoline engines chain tensioning device according to claim 1 is characterized in that: described tensioning piece (5) is a box like structure, and described tension wheel shaft (2) ecto-entad passes a side of tensioning piece (5), is locked by nut (7).
3. general gasoline engines chain tensioning device according to claim 2 is characterized in that: the middle part of described tension wheel shaft (2) is formed with annular boss, and this annular boss is positioned between tensioning piece (5) and the Idle wheel (1).
4. general gasoline engines chain tensioning device according to claim 2, it is characterized in that: the top at described tensioning piece (5) back side is formed with journal stirrup (5a) by punching press, one end of spring (3) is sleeved on this journal stirrup (5a), and the other end of spring (3) is sleeved on the positioning table (4a) of tensioning bolt (4) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201249587U CN201074664Y (en) | 2007-08-10 | 2007-08-10 | Chain tensioner of all-purpose petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201249587U CN201074664Y (en) | 2007-08-10 | 2007-08-10 | Chain tensioner of all-purpose petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074664Y true CN201074664Y (en) | 2008-06-18 |
Family
ID=39519927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201249587U Expired - Lifetime CN201074664Y (en) | 2007-08-10 | 2007-08-10 | Chain tensioner of all-purpose petrol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074664Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564944C (en) * | 2007-08-09 | 2009-12-02 | 力帆实业(集团)股份有限公司 | A kind of petrolic chain tension system |
| CN106122402A (en) * | 2016-08-26 | 2016-11-16 | 江苏理文造纸有限公司 | A kind of support tensioner |
-
2007
- 2007-08-10 CN CNU2007201249587U patent/CN201074664Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564944C (en) * | 2007-08-09 | 2009-12-02 | 力帆实业(集团)股份有限公司 | A kind of petrolic chain tension system |
| CN106122402A (en) * | 2016-08-26 | 2016-11-16 | 江苏理文造纸有限公司 | A kind of support tensioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |