CN106838206A

CN106838206A - Camshaft centrifugal device

Info

Publication number: CN106838206A
Application number: CN201710113703.9A
Authority: CN
Inventors: 杜江
Original assignee: Auspicious Mound Machinery Ltd Co Of Chongqing City
Current assignee: CHONGQING JUCHENG MACHINERY Co.,Ltd.
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2017-06-13

Abstract

The present invention relates to field of mechanical technique, a kind of camshaft centrifugal device is disclosed, including：Camshaft, fluted disc, torsion spring, centrifuge arm, two symmetrically arranged first bearings and the second bearing on guide finger and fluted disc, the fluted disc is located at one end of the camshaft, and it is vertical with the camshaft, the centrifuge arm is in bending structure twice, make the centrifuge arm that there is integrally formed first trailing arm, transverse arm and the second trailing arm, first trailing arm is respectively formed with through hole near the end of one end of the transverse arm and the second trailing arm, two lines of centres of through hole are parallel to the transverse arm, the other end of the first trailing arm connects the camshaft, guide finger one end is fixed on fluted disc, the other end sequentially passes through the first bearing, through hole on first trailing arm, the main body of torsion spring, through hole and the second bearing on second trailing arm, first elongated end of torsion spring connects first trailing arm, second elongated end is connected on the second bearing.Camshaft exocentric structure of the invention is simple, and material consumption is smaller, low production cost.

Description

Camshaft centrifugal device

Technical field

The present invention relates to frame for movement technical field, more particularly to a kind of camshaft centrifugal device.

Background technology

Existing camshaft exocentric structure as illustrated in fig. 1 and 2, including：Camshaft 100, centrifuge arm 200, decompression block 300, subtract Briquetting rivet 400, guide finger 500, plastic clip 600, extension spring 700 and fluted disc 800.The meeting when camshaft 100 rotates of centrifuge arm 200 Overcome the pulling force of extension spring 700 to move out and drive decompression block 300 to rotate.The camshaft exocentric structure is that big inserts is plastic to be added The material consumption of the fluted disc 800 of work, metal cam axle 100 and plastic material is larger, and centrifugal mechanism is complex, and production is difficult Spend big high cost.

In addition, as seen in figures 3-5, camshaft 100 includes：Shaft core 101, the first cam 102, the second cam 103 and fluted disc 800 connecting portion 104.The connecting portion 104 of fluted disc 800 be all using corner star structure, radial direction length more than two Individual cam, size is larger.When making, the diameter of blank is greater than the diagonal of corner star, therefore, raw material wave during processing Take larger, high cost, difficulty of processing is big.And when injection forms fluted disc 800 in order to prevent fluted disc 800 to be axially moveable, tooth Disk 800 wants the connecting portion 104 of fully wrapped around corner star structure, and shaping difficulty is larger.

The content of the invention

The present invention proposes a kind of camshaft, solves that exocentric structure in the prior art is complicated, raw material consumptive material is big, is produced into This problem high.

A kind of camshaft centrifugal device of the invention, including：Camshaft, fluted disc, torsion spring, centrifuge arm, guide finger and fluted disc Upper two symmetrically arranged first bearings and the second bearing, the fluted disc be located at the camshaft one end, and with the cam Axle is vertical, and the centrifuge arm makes the centrifuge arm have integrally formed first trailing arm, transverse arm and second in bending structure twice Trailing arm, the first trailing arm is respectively formed with through hole, two centers of through hole near the end of one end of the transverse arm and the second trailing arm Line connects the camshaft parallel to the transverse arm, the other end of the first trailing arm, and described guide finger one end is fixed on fluted disc, The other end sequentially passes through through hole and second on through hole on the first bearing, the first trailing arm, the main body of torsion spring, the second trailing arm Seat, the first elongated end of the torsion spring connects first trailing arm, and the second elongated end is connected on the second bearing.

Wherein, the region being located between the first bearing and the second bearing on the fluted disc is formed with width more than the transverse arm Hole.

Wherein, one end of the shaft core of the camshaft has been radially formed protuberance, the first cam of camshaft and second Cam covers protuberance projection on the plane in the projection in the plane of shaft core.

Wherein, the protuberance is along the circumferential annular protrusion of shaft core and integrally formed with the shaft core.

Wherein, the side wall of the shaft core is formed with least one groove, and the groove is communicated to the protuberance.

Wherein, the side wall of the shaft core is formed with two grooves, two grooves along shaft core axisymmetrical.

The simple structure of camshaft centrifugal device of the invention, material consumption is smaller, light weight, low production cost.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also Other accompanying drawings are obtained with according to these accompanying drawings.

Fig. 1 is a kind of front view of existing camshaft exocentric structure；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the camshaft front view of the camshaft centrifugal device of Fig. 1；

Fig. 4 is the upward view of Fig. 3；

Fig. 5 is the camshaft of existing camshaft centrifugal device and the connection diagram of fluted disc.

Fig. 6 is a kind of front view of camshaft centrifugal device of the invention；

Fig. 7 is the top view of Fig. 6

Fig. 8 is the camshaft front view of the camshaft centrifugal device of Fig. 6；

Fig. 9 is the upward view of Fig. 8；

Figure 10 is the camshaft of camshaft centrifugal device of the invention and the connection diagram of fluted disc.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

The camshaft centrifugal device of the present embodiment as shown in Figures 6 and 7, including：Camshaft 1, fluted disc 6, torsion spring 4, centrifuge arm 2nd, two bearings 52 of symmetrically arranged first bearing 51 and second on guide finger 3 and fluted disc 6.Fluted disc 6 is located at the one of camshaft 1 End, and be vertically arranged with camshaft 1, centrifuge arm 2 makes centrifuge arm 2 have integrally formed first trailing arm in bending structure twice 21st, the trailing arm 23 of transverse arm 22 and second, the first trailing arm 21 is respectively formed near the end of one end of transverse arm 22 and the second trailing arm 23 Through hole, two lines of centres of through hole are parallel to transverse arm 22, the other end connection camshaft 1 of the first trailing arm 21.The one end of guide finger 3 It is fixed on fluted disc 6, the other end sequentially passes through through hole on the first bearing 51, the first trailing arm 21, the main body of torsion spring 4, second indulges Through hole and the second bearing 52 on arm 23, the first elongated end of torsion spring 4 connect the first trailing arm 21, and the second elongated end is connected to second On bearing 52.

During work, centrifuge arm 2 is when product (part ratcheting with fluted disc 6) rotates because centrifugal action overcomes the pre- of torsion spring 4 Clamp force rotates around guide finger 3, for example：When the rotating speed of camshaft 1 reaches 5000 revs/min, centrifuge arm 2 can overcome torsion spring 4 to rotate, I.e. transverse arm 22 can be rotated and is subjected to displacement, by transverse arm 22 with outside part to be controlled (such as：Valve, can be by speed control valve The different aperture of door) connection, to control external component.The structure of the camshaft centrifugal device of the present embodiment is relative to existing structure Simpler, material consumption is smaller, light weight, low production cost, in the case where product entirety using effect is not influenceed, manufacture Cost reduction about 20%.

In the present embodiment, the region being located between the first bearing 51 and the second bearing 52 on fluted disc 6 is formed with width and is more than The hole of transverse arm 22, is to concede space when transverse arm 22 is rotated, it is not necessary to by the first bearing 51 and the second bearing 52 do it is too high so that It is the product save space matched with the camshaft centrifugal device.

As shown in figs. 8-10, one end of the shaft core 11 of camshaft 1 has been radially formed protuberance 14, as shown in figure 9, the The projection of one cam 12 and the second cam 13 in the plane perpendicular to shaft core 11 covering protuberance 14 is on the plane Projection, that is, say that protuberance 14 radially will not stretch out the first cam 12 and the second cam 13 in shaft core 11.Protuberance 14 is remote Less than existing corner star structure, thus the camshaft of processing the present embodiment blank small volume, raw materials consumption is smaller, Production cost is lower.

In the present embodiment, protuberance 14 is along the circumferential annular protrusion of shaft core and integrally formed with the shaft core, annular Protuberance 14 is easy to make shaping, and makes the uniform force of whole fluted disc 8 when being connected with fluted disc 6.

The side wall of shaft core 11 is formed with least one groove 15, and groove 15 is communicated to protuberance 14.Such as the institutes of Fig. 8 and 10 Show, a retaining structure is formed between the upper edge of groove 15 and following protuberance 14, and fluted disc 6 increases and the side of shaft core 11 after installing The friction of wall, it is to avoid fluted disc 6 by along shaft core 11 axis direction power it is too big when there is axial displacement.It is molded in fluted disc 6 and is formed When do not need fully wrapped around whole protuberance 14, save plastic material, and the structure of this screens is easier injection.

The side wall of shaft core 11 is formed with two grooves 15, and two grooves 15 make fluted disc 6 receive axle along the axisymmetrical of shaft core 11 The power in line direction is more uniform, further avoid fluted disc 6 by along shaft core 11 axis direction side force it is too big when occur axially Displacement.

The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims

1. a kind of camshaft centrifugal device, it is characterised in that including：Camshaft, fluted disc, torsion spring, centrifuge arm, guide finger and fluted disc Upper two symmetrically arranged first bearings and the second bearing, the fluted disc be located at the camshaft one end, and with the cam Axle is vertical, and the centrifuge arm makes the centrifuge arm have integrally formed first trailing arm, transverse arm and second in bending structure twice Trailing arm, the first trailing arm is respectively formed with through hole, two centers of through hole near the end of one end of the transverse arm and the second trailing arm Line connects the camshaft parallel to the transverse arm, the other end of the first trailing arm, and described guide finger one end is fixed on fluted disc, The other end sequentially passes through through hole and second on through hole on the first bearing, the first trailing arm, the main body of torsion spring, the second trailing arm Seat, the first elongated end of the torsion spring connects first trailing arm, and the second elongated end is connected on the second bearing.

2. a kind of camshaft centrifugal device as claimed in claim 1, it is characterised in that be located on the fluted disc the first bearing and Region between second bearing is formed with hole of the width more than the transverse arm.

3. a kind of camshaft centrifugal device as claimed in claim 1 or 2, it is characterised in that the one of the shaft core of the camshaft End has been radially formed protuberance, and first cam and the second cam of camshaft cover in the projection in the plane of shaft core Cover protuberance projection on the plane.

4. a kind of camshaft centrifugal device as claimed in claim 3, it is characterised in that the protuberance is circumferential along shaft core Annular protrusion, and it is integrally formed with the shaft core.

5. a kind of camshaft centrifugal device as claimed in claim 4, it is characterised in that the side wall of the shaft core is formed with least One groove, and the groove is communicated to the protuberance.

6. a kind of camshaft centrifugal device as claimed in claim 5, it is characterised in that the side wall of the shaft core is formed with two The groove, two grooves along shaft core axisymmetrical.