CN2145277Y

CN2145277Y - Improved structure for oil pressure cylinder with return force function

Info

Publication number: CN2145277Y
Application number: CN 92240680
Authority: CN
Inventors: 高中直
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-31
Filing date: 1992-12-31
Publication date: 1993-11-03
Anticipated expiration: 2002-12-31

Abstract

The utility model relates to an improved structure of an oil pressure cylinder with return force function. A force return spring is sheathed on an outer ring of an operating rod of an oil pressure cylinder. One end of the force return spring is butted with a combining ring sheet of a combining base, and the other end of the force return spring is butted with a piston base. Through the function of the force return spring and the structural design of an oil path matched with the combining base and the piston base, the oil pressure cylinder achieves the purpose of moving when a user draws the operating rod. When the user stops drawing, the operating rod naturally returns to a state before being drawn.

Description

Improved structure for oil pressure cylinder with return force function

The utility model is a kind of oil hydraulic cylinder pressure texture, be meant a kind of oil hydraulic cylinder structure-improved of tool return force function especially, when using at sports equipment, its oil hydraulic cylinder can provide user's movement effects, and can be when not start of user, the operating bar of its oil hydraulic cylinder is automatically replied the location.

In the oil hydraulic cylinder structural design of commonly using, all be the pressure of controlling its oil hydraulic cylinder with the oil channel structures of inside, with the motion that this oil hydraulic cylinder is provided and the effect of buffering, it is applied in the sports equipment aspect, by the circulation of its oil circuit; And the pressure of its oil hydraulic cylinder of may command, and then reach the purpose of motion.

But in some exercise, the demand of its actuator function has more than and is limited to simple drawing or promotion, and in the exercise of some, some is that requirement works as that the user stops drawing and when promoting, the function of returning power automatically and returning back to the origin-location should be arranged.Yet in the function that the conventional oil cylinder pressure is provided, but can't meet this demand.Therefore, in the exercise of part, Chang Yin is subject to the function of oil hydraulic cylinder, and makes the commodity value of product and function be subjected to discount.

In order to address the above problem, the MANUFACTURER of componental movement equipment is to use the existing product of original motion oil hydraulic cylinder, design again that withdrawal mechanism comes this oil hydraulic cylinder of drawing outside power, the operating bar of oil hydraulic cylinder is retracted, but this kind mode will increase the structure complexity and the manufacture cost of whole equipment widely.

Therefore, the main purpose of the utility model promptly is for a kind of novel oil hydraulic cylinder structure with return force function is provided, oil channel structures design within its oil hydraulic cylinder, the motion stress of this oil hydraulic cylinder can be provided, in user's drawing, can be by the pressure texture of its inside, and the pressure of a motion is provided; And when the user stopped the application of force, the operating bar of its oil hydraulic cylinder can automatically return back to original position, promptly returned back to the position of withdrawal, so can make this oil hydraulic cylinder in response to the function requirement of sports equipment, and better practicability is provided.

Another purpose of the utility model is for a kind of simple and easy oil hydraulic cylinder structure with return force function is provided, and its structural design is simple and easy and can bring into play splendid effect.Therefore, the utility model is particularly suitable for being applied in the sports equipment.

Below will do a detailed explanation, and consult attached be graphic, will do further understanding the feature of the utility model to the structural design of the utility model and the principle of start thereof, wherein:

Brief description of drawings:

Fig. 1 is the three-dimensional exploded view of the utility model;

Fig. 2 is the sectional view of the utility model.

Consult shown in the figure one, the oil hydraulic cylinder pressure texture that it shows the utility model mainly includes: assemblies such as pipe 2, one operating bar 3, a pivot end 7, a piston seat 6, a fixed end 4, a cushion pad 31, a conjunction base 5 and a return spring 8 in an oil hydraulic cylinder outer tube 1, the oil hydraulic cylinder.Below with the further explanation of configuration relation between each member and each member.

One of operating bar 3 end is a pivot end 7, and can articulate other external body of rod or other object, and for example in the application examples of a sports equipment, it can be in conjunction with a handle that is available for users to grippings, and the confession user does the motion of drawing or promotion.

The other end of operating bar 3 is affixed piston seat 6, and piston seat 6 is can manage in 2 to slide with the action of work operating bar 3 in one.Should in the pipe 2 be to be inserted in again within the outer tube 1, and by conjunction base 5 with both combinations.

The terminal system of another of outer tube 1 is combined with a fixed end 4, is fixed on the fixture with the oil hydraulic cylinder with this whole group, for example on the fixing frame of a sports equipment.Therefore, under fixed end 4 disposes with the arrangement of pivot end 7, promptly can be used as the usefulness of the motion oil hydraulic cylinder in the sports equipment.

Conjunction base 5, except as in conjunction with outer tube and the interior pipe, other also provides the usefulness of oil circuit access structure of the oil pressure of the utility model.The structure of its conjunction base 5, include one in conjunction with ring plate 52 and capping 53, capping 53 with combine the space that is formed between the ring plate 52, can be for the oil cylinder of commonly using, assemblies (as shown in the figure) such as packing spring groups is upright, so that overflow in the unlikely slit by 53 of operating bar 3 and cappings of the oil one in the oil hydraulic cylinder.The penetration hole 51 that has a plural number in conjunction with ring plate 52 of this conjunction base 5 runs through its wall in conjunction with ring plate 52, and its penetration hole 51 the section of position system between interior pipe 2 and outer tube 1 be set.

The structure of piston seat 6, include a nut 61, an oil seal ring 62, a spring 63, one grade of stop ring 64, and the penetration hole 65 of plural number, its grade stop ring 64 is to be formed at one of this piston seat 6 end wall, and at oil hydraulic cylinder not during the state of start, by spring 63 with 64 grades of outlets of living its penetration hole 65 of shelves stop ring.

Ring is arranged with return spring 8 outside this operating bar 3, one of its return spring 8 end system prop up conjunction base 5 in conjunction with ring plate 52, the other end of its return spring then props up piston seat 6.

The oil hydraulic cylinder of the utility model is when being subjected to user's drawing, be that operating bar 3 is when being drawn out by outer tube 1, oil in it in pipe 2 will be subjected to the pressure that the user imposes, and by conjunction base 5 in conjunction with the Clearance Flow between ring plate 52 and the operating bar 3, and derive and flow in the outer tube 1 by each penetration hole on the conjunction base 5 51.

And when the user stops the action of drawing, then make operating bar 3 return back to original state naturally by the effect of return spring 8.And begin effect at this return spring 8, and operating bar 3 is returned back to when original state, because the elastic force of return spring 8 is big than spring 63 elastic force,, and manage in 2 in reentering so the oil in its outer tube 1 will be pushed grade stop ring 64 open by each penetration hole 65 of piston seat 6.

Claims

A kind of oil hydraulic cylinder structure-improved of tool return force function, one of its operating bar end binds the unification pivot end, be available for users to do the motion of drawing or promotion, the other end system is with the affixed piston seat of nut, and piston seat system slides with the action of work operating bar in can managing in one, should be inserted in again within the outer tube by interior pipe, and by conjunction base with both combinations, its feature ties up to outside this operating bar and encircles, be arranged with a return spring, one of its return spring end system prop up conjunction base in conjunction with ring plate, the other end of its return spring then props up piston seat, and when operating bar is subjected to drawing, the oil in it in pipe will be subjected to the pressure that the user imposes, and by conjunction base in conjunction with the Clearance Flow between ring plate and the operating bar, and derive and flow in the outer tube by each penetration hole on the conjunction base; And when the user stops the action of drawing, then make operating bar return back to original state naturally by the elastic force of return spring itself.