CN202348362U - Valve rocker for engine - Google Patents
Valve rocker for engine Download PDFInfo
- Publication number
- CN202348362U CN202348362U CN2011204516016U CN201120451601U CN202348362U CN 202348362 U CN202348362 U CN 202348362U CN 2011204516016 U CN2011204516016 U CN 2011204516016U CN 201120451601 U CN201120451601 U CN 201120451601U CN 202348362 U CN202348362 U CN 202348362U
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- China
- Prior art keywords
- intake cam
- pin
- speed intake
- high speed
- low speed
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- Withdrawn - After Issue
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Abstract
The utility model discloses a valve rocker for an engine. A high speed admission cam control part and a low speed admission cam control part are arranged on the valve rocker; and a high/low speed admission cam switching control mechanism is arranged on the high speed admission cam control part. According to the valve rocker, the high speed admission cam control part and the low speed admission cam control part are switched through the high/low speed admission cam switching control mechanism arranged on the high speed admission cam control part, the number of valve rockers is reduced, the rotary inertia and damp loss of the valve rocker are reduced and the high/low speed admission cam switching reliability is improved.
Description
Technical field
The utility model relates to a kind of engine valve rocking arm.
Technical background
Engine variable-valve correct time and lift technology are widely used on automobile, technology maturation.But for some some industries of specific (special) requirements are arranged, like motorcycle industry, owing to retrained by factors such as cost, structural volume, VVT and lift technology also are not used widely.Even if some application; Realize the open and close controlling of valve mostly with two or more rocking arms; Though changed the air inlet adjustment of motor to a certain extent; But because problems such as big, the high low speed switching of a plurality of rocking arm rotary inertias and damping loss poor reliability, thereby cause the pervasive performance of motor can't obtain the change of essence.
Summary of the invention
In order to solve the problem that the big and high, low speed intake cam of a plurality of rocking arm rotary inertias and damping loss in the existing technology switches poor reliability; The purpose of the utility model is to provide a kind of engine valve rocking arm; This rocking arm can be realized the switching of high, low speed intake cam according to the rotating speed of motor; Rotary inertia and damping loss are little, and it is high to switch reliability, and have improved the pervasive performance of power of motor.
To achieve these goals, the utility model provides a kind of engine valve rocking arm.The first aspect of the utility model, valve rocker are provided with high speed intake cam control device and low speed intake cam control device, and said high speed intake cam control device is provided with high, low speed intake cam switching controls mechanism.
The second aspect of the utility model; On the basis of first aspect; Said high, low speed intake cam switching controls mechanism comprises: the piston that can in said high speed intake cam control device, slide up and down; Be connected with high speed intake cam contact block in the lower end of this piston, the lower end of this high speed intake cam contact block is provided with the high speed intake cam surface of contact that can contact with the high speed intake cam; On piston, also be provided with piston guide inclined-plane, spacing draw-in groove and pistons work plane; Be arranged at the pin-and-hole in the said high speed intake cam control device; The pin that can in pin-and-hole, slide has the spring groove I at an end of this pin; Also be provided with pin guiding surface, positive stop hook, pin confined planes and pin working plane on this pin; Hydraulic tubing, this hydraulic tubing be arranged on the valve rocker near an end of rocker shaft and with above-mentioned pin-and-hole UNICOM; End cap.
The third aspect of the utility model, on the basis of second aspect, said pin is provided with seal groove at the end near hydraulic tubing, and seal ring is housed in it.
The fourth aspect of the utility model, on the basis of second aspect, the inside of said end cap has the spring groove II.
The 5th aspect of the utility model, on the basis of fourth aspect, the diameter of said spring groove II is not less than the diameter of pin-and-hole.
According to the utility model first aspect; Can obtain following effect: valve rocker is realized the mutual switching between high speed intake cam and the low speed intake cam through the high, low speed intake cam switching controls mechanism that is arranged on high speed intake cam control device; Reduced the quantity of valve rocker; Reduce the rotary inertia and the damping loss of valve rocker, improved the reliability that the high, low speed intake cam switches.
According to the utility model second aspect, through being arranged on the high, low speed intake cam switching controls mechanism on the high speed intake cam control device, can effectively realize the switching of high, low speed intake cam, reliability is high.
According to the utility model third aspect, be provided with the sealing that seal groove and seal ring can effectively improve hydraulic system.
According to the utility model fourth aspect, in end cap set inside spring groove II, can effectively utilize the inner space of end cap, increased the holding space of spring.
According to the utility model the 5th aspect; Because the diameter of spring groove II is not less than the diameter of pin-and-hole, thus pin when the end cap direction is slided, the end of pin can enter into the spring groove II; Effectively utilize the inner space of end cap, realized the valve rocker integral miniaturization.
Description of drawings:
Fig. 1 is the air valve structure figure of traditional combustion engine;
Fig. 2 is the rocking arm and the switching construction figure (before improving) thereof of existing technology;
Fig. 3 is the structural drawing that the utility model adopts single rocking arm;
Fig. 4 is that the A of Fig. 3 is to view
Fig. 5 is the working state figure before the utility model high, low speed intake cam switches;
Fig. 6 is that the utility model high, low speed intake cam switches ongoing working state figure;
Fig. 7 is the partial enlarged drawing at B place among Fig. 6;
Fig. 8 is that the utility model high, low speed intake cam switches the working state figure after accomplishing;
Fig. 9 is the sectional view of A-A direction among Fig. 8;
Figure 10 is the structural drawing of pin 7;
Figure 11 is the structural drawing of piston 4.
Label declaration:
1: the low speed intake cam; 2: the high speed intake cam; 3: high speed intake cam contact block;
31: high speed intake cam surface of contact; 4: piston; 5: spring; 6: spacing draw-in groove;
7: pin; 71: pin-and-hole; 8: seal ring; 9: hydraulic tubing; 10: valve rocker;
101: high speed intake cam control device; 102: low speed intake cam control device;
11: rocker shaft; 12: the pin guiding surface; 13: positive stop hook; 14: the piston guide inclined-plane;
15: camshaft; 16: bearing surface of piston; 17: seal groove; 18: the spring groove I;
19: the pin working plane; 20: the pistons work plane; 21: the pin confined planes; 22: end cap
23: intake valve; 25: the spring groove II.
Embodiment
Below, with reference to accompanying drawing 1-9 the embodiment of the utility model is described:
As shown in Figure 1, the intake valve of traditional combustion engine is controlled through a cam, and the lift of valve is immutable.
As shown in Figure 2; Engine air valve lift variset in the existing technology; High speed intake cam and low speed intake cam are used the open and close controlling that two or more rocking arms are realized intake valve usually; Though this structure has changed the air inlet adjustment of motor to a certain extent,, cause the performance of motor can't realize the change of essence because there are problems such as big, the high low speed intake cam switching of rotary inertia and damping loss poor reliability in a plurality of rocking arms.
As shown in Figure 3, the engine valve rocking arm 10 of the utility model, it can rotate around rocker shaft 11.Rocking arm 10 is provided with high speed intake cam control device 101 and low speed intake cam control device 102.The high speed intake cam control device 101 through this valve rocker 10 and low speed intake cam control device 102 are controlled the switching of intake valve 23 respectively to be arranged on high speed intake cam 2 and low speed intake cam 1 on the camshaft 15.
Like Fig. 4-shown in Figure 9; Be provided with can be in valve rocker 10 up and down piston 4 in the lower end of the high speed intake cam control device 101 of valve rocker 10; The lower end of piston 4 is connected with high speed intake cam contact block 3, and it is provided with the high speed intake cam surface of contact 31 that can contact with high speed intake cam 2.
Like Fig. 5-shown in Figure 8, have pin-and-hole 71 in the inside of the high speed intake cam control device 101 of valve rocker 10, pin 7 can slide in this pin-and-hole 71.
Shown in figure 10, have spring groove I 18 at an end of pin 7, the other end has seal groove 17, is provided with pin guiding surface 12, pin working plane 19, pin confined planes 21 and positive stop hook 13 with piston 4 cooperatings in the bottom of pin 7.
Shown in figure 11, piston 4 be provided with can with piston guide inclined-plane 14, bearing surface of piston 16, pistons work plane 20 and the spacing draw-in groove 6 of pin 7 cooperatings.
As shown in Figure 5, the end near rocker shaft 11 on rocking arm 10 has hydraulic tubing 9, this hydraulic tubing 9 and pin-and-hole 71 UNICOMs.
To shown in Figure 8, away from an end of rocker shaft 11 end cap 22 is installed at rocking arm 10 like Fig. 5, this end cap 22 roughly is " ］ " shape, inside offers spring groove II 25.
As shown in Figure 5, motor is (before switching at a high speed) under the low cruise situation, and the positive stop hook 13 on the pin 7 snaps in the spacing draw-in groove 6 of piston 4; Spring 5 is exerted pressure to pin 7; Thereby the position of piston 4 is limited, make piston 4 can not do about, motion such as rotation, this moment, high speed intake cam contact block 3 separated with high speed intake cam 2; High speed intake cam 2 is in idling conditions, and the switching of engine intake valve 23 is controlled by low speed intake cam 1.
Like Fig. 6, shown in Figure 7, when the speed of motor is constantly accelerated, in the time of need switching to high speed intake cam 2; Under action of hydraulic force from hydraulic tubing 9; Hydraulic coupling promotes pin 7 and overcomes the direction slip of the active force of spring 5 to end cap 22, and at this moment, positive stop hook 13 is slowly thrown off from spacing draw-in groove 6; When disengaging to certain position; Pin guiding surface 12 begins to contact with piston guide inclined-plane 14, and under the effect of pin guiding surface 12, piston 4 beginnings are moved near the direction of camshaft 15 downwards.
As shown in Figure 8, pin 7 continues to slide to the direction of end cap 22 under hydraulic pressure, at this moment; 19 beginnings of pin working plane contact with pistons work plane 20, and pin 7 continues to slide, and pin working plane 19 fully contacts with pistons work plane 20; Contact with slip surface 16 on the piston 4 up to the confined planes on the pin 7 21; At this moment, pin 7 stop motions, high speed intake cam surface of contact 31 contacts with high speed intake cam 2; Low speed intake cam 1 breaks away from low speed intake cam control device 102 simultaneously, and handoff procedure is accomplished.Then, the pressure of hydraulic system remains unchanged, and high speed intake cam 2 begins the switching of intake valve 23 is controlled.
Just in time opposite by high speed intake cam 2 to the handoff procedure and the above-mentioned handoff procedure of low speed intake cam 1.
Along with the rotating speed decline of motor, the hydraulic system fast pressure relief, under the effect of spring 5, pin 7 slides to the direction near rocker shaft 11, and pin confined planes 21 is thrown off with bearing surface of piston 16.Along with the slip of pin 7, pin working plane 19 is also slowly thrown off with pistons work plane 20.Then, pin guiding surface 12 begins to contact with piston guide inclined-plane 14.Pin 7 continues to slide, after the positive stop hook 13 of pin 7 inserts the spacing draw-in groove 6 of piston 4, at this moment; The position of piston 4 is raised; High speed intake cam surface of contact 31 breaks away from high speed intake cam 2, and high speed intake cam 2 is in off working state, and low speed intake cam 1 contacts with low speed intake cam control device 102 simultaneously; Handoff procedure is accomplished, and the switching of intake valve 23 is controlled by low speed intake cam 1.
Claims (5)
1. engine valve rocking arm; It is characterized in that: valve rocker (10) is provided with high speed intake cam control device (101) and low speed intake cam control device (102), and said high speed intake cam control device (101) is provided with high, low speed intake cam switching controls mechanism.
2. a kind of engine valve rocking arm according to claim 1 is characterized in that: said high, low speed intake cam switching controls mechanism comprises:
The piston (4) that can in said high speed intake cam control device (101), slide up and down; Be connected with high speed intake cam contact block (3) in the lower end of this piston (4), the lower end of this high speed intake cam contact block (3) is provided with the high speed intake cam surface of contact (31) that can contact with high speed intake cam (2); On piston (4), also be provided with piston guide inclined-plane (14), spacing draw-in groove (6) and pistons work plane (20);
Be arranged at the pin-and-hole (71) in the said high speed intake cam control device (101);
The pin (7) that can in pin-and-hole (71), slide has spring groove I (18) at the end of this pin (7); Also be provided with pin guiding surface (12), positive stop hook (13), pin confined planes (21) and pin working plane (19) on this pin (7);
Hydraulic tubing (9), this hydraulic tubing (9) be arranged on valve rocker (10) go up near an end of rocker shaft (11) and with above-mentioned pin-and-hole (71) UNICOM;
End cap (22).
3. a kind of engine valve rocking arm according to claim 2 is characterized in that: said pin (7) is provided with seal groove (17) at the end near hydraulic tubing (9), and seal ring (8) is housed in it.
4. a kind of engine valve rocking arm according to claim 2 is characterized in that: the inside of said end cap (22) has spring groove II (25).
5. a kind of engine valve rocking arm according to claim 4 is characterized in that: the diameter of said spring groove II (25) is not less than the diameter of pin-and-hole (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204516016U CN202348362U (en) | 2011-11-15 | 2011-11-15 | Valve rocker for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204516016U CN202348362U (en) | 2011-11-15 | 2011-11-15 | Valve rocker for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348362U true CN202348362U (en) | 2012-07-25 |
Family
ID=46537371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204516016U Withdrawn - After Issue CN202348362U (en) | 2011-11-15 | 2011-11-15 | Valve rocker for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352785A (en) * | 2011-11-15 | 2012-02-15 | 中国嘉陵工业股份有限公司（集团） | Engine valve rocker arm |
| CN112065525A (en) * | 2020-09-09 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm mechanism and engine assembly |
-
2011
- 2011-11-15 CN CN2011204516016U patent/CN202348362U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352785A (en) * | 2011-11-15 | 2012-02-15 | 中国嘉陵工业股份有限公司（集团） | Engine valve rocker arm |
| CN112065525A (en) * | 2020-09-09 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm mechanism and engine assembly |
| US11891924B2 (en) | 2020-09-09 | 2024-02-06 | Weichai Power Co., Ltd. | Rocker arm mechanism and engine assembly |
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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 |
Granted publication date: 20120725 Effective date of abandoning: 20140820 |
|
| RGAV | Abandon patent right to avoid regrant |