CN209137852U - A kind of gas spring lockup switch structure - Google Patents

Abstract

The utility model provides a kind of gas spring lockup switch structure, including handle, eccentric cam, steel ball and spring, the push rod end of gas spring is provided with the first hinged ear mount, one end face of the first hinged ear mount offers cross mounting groove, eccentric cam is rotatably installed in cross mounting groove and its side is in contact with the needle tip of gas spring, shaft one end of eccentric cam is exposed to outside the first hinged ear mount side and is fixedly connected with the head of handle, the one side of first hinged ear mount offers blind round hole, spring is placed in blind round hole, steel ball pressing spring, the surface of the head of handle close to the first hinged ear mount offers multiple hemispherical grooves that distribution is surround centered on shaft, steel ball and hemispherical groove select a cooperation.The utility model is easy to operate, by the cooperation of steel ball and hemispherical groove, fixes handle at predetermined position, guarantees needle-valve reliable operation, so that push rod freely controls the distance of elongation in the effective travel of elongation.

Description

A kind of gas spring lockup switch structure

Technical field

The utility model belongs to gas spring technology field, and in particular to a kind of gas spring lockup switch structure.

Background technique

Treadmill is the standing fitness equipment of family and gymnasium, and is simplest one in current family fitness equipment Kind, it is the optimal selection of Domestic health care exercising apparatus.The column of traditional treadmill is usually to be permanently fixed, and is unable to folding storage, Occupied space is big when not in use, and design is unreasonable, very inconvenient.Currently, gas spring is widely used in opening for automobile trunk It closes, but this gas spring is unable to locking, therefore cannot be directly applied on treadmill fold mechanism, therefore it is necessary to carry out It improves.

Utility model content

In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a kind of gas spring lockings to open Close structure.

In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of gas spring lockup switch structure, Including handle, eccentric cam, steel ball and spring, the push rod end of the gas spring is provided with the first hinged ear mount, and described first One end face of hinged ear mount offers cross mounting groove, and the eccentric cam is rotatably installed in cross mounting groove and its side Face is in contact with the needle tip of gas spring, shaft one end of the eccentric cam be exposed to outside the first hinged ear mount side and with The head of handle is fixedly connected, and the one side of the first hinged ear mount offers blind round hole, and the spring is placed in circle In blind hole, the steel ball pressing spring, the surface of head close to the first hinged ear mount of the handle offers multiple to turn A cooperation is selected around the hemispherical groove of distribution, the steel ball and hemispherical groove centered on axis.

Further, the side at the eccentric cam minimum radius is provided with the positioning to match with end at the top of shank Groove.

Further, shaft one end of the eccentric cam is provided with positioning column, and the head of the handle is offered for fixed The location hole of position column insertion.

Further, the cross section of the positioning column and positioning hole is in polygon.

Further, the head of the handle is screwed in shaft one end of eccentric cam.

Further, there are three the hemispherical groove tools, in 120 ° of angle distributions between three hemispherical grooves.

Further, the diameter of the steel ball is greater than the internal diameter of spring, and the diameter of the steel ball is less than the straight of blind round hole Diameter.

Further, the drift of the spring is equal to the depth of blind round hole.

Further, the shaft of the eccentric cam includes two cylindrical bodies for being symmetrically distributed in eccentric wheel both ends of the surface.

Further, the barrel end of the gas spring is provided with the second hinged ear mount.

Compared with prior art, the utility model has the following beneficial effects: by hand-drive eccentric cam, and then make Shank moves up and down, easy to operate to control the needle-valve opening and closing of gas spring；It is recessed by blind round hole, spring, steel ball and hemispherical The cooperation of slot fixes handle in initial position or while being rotated in place, guarantees needle-valve reliable operation, so that push rod is in elongation The distance of elongation is freely controlled in effective travel.

Detailed description of the invention

Fig. 1 is the Structure explosion diagram of the utility model embodiment.

Fig. 2 is the assembling schematic diagram of spring and steel ball.

Fig. 3 is the assembling schematic diagram of handle and the first hinged ear mount.

Fig. 4 is the structural schematic diagram of handle.

Fig. 5 is structural schematic diagram of the push rod in lockup state.

Fig. 6 is the structural schematic diagram one of push rod in the open mode.

Fig. 7 is the structural schematic diagram two of push rod in the open mode.

Marked in the figure: 10, handle；11, hemispherical groove；12, location hole；20, eccentric cam；21, shaft；211, it positions Column；22, positioning groove；30, steel ball；40, spring；50, gas spring；51, cylinder；52, push rod；53, the second hinged ear mount；54, First hinged ear mount；541, cross mounting groove；542, blind round hole；55, shank；60, screw；70, cover board.

Specific embodiment

In order to allow the utility model features described above and advantage be clearer and more comprehensible, below spy for embodiment, and cooperate attached drawing, It is described in detail below.

As shown in Fig. 1~7, a kind of gas spring lockup switch structure, including handle 10, eccentric cam 20, steel ball 30 and bullet Spring 40,51 end of cylinder of the gas spring 50 are provided with the second hinged ear mount 53, and 52 end of push rod of the gas spring 50 is set It is equipped with the first hinged ear mount 54, an end face of the first hinged ear mount 54 offers cross mounting groove 541, first hinge Cover board 70 for covering cross mounting groove 541 is installed, the eccentric cam 20 is rotatably installed in cross on lug seat 54 In shape mounting groove 541 and its side is in contact with 55 top of shank of gas spring 50,21 one end of shaft of the eccentric cam 20 It is exposed to outside the first hinged 54 side of ear mount and is fixedly connected with the head of handle 10, the one side of the first hinged ear mount 54 Blind round hole 542 is offered, the spring 40 is placed in blind round hole 542,30 pressing spring 40 of steel ball, the handle It is recessed that the surface of 10 head close to the first hinged ear mount 54 offers multiple hemisphericals centered on shaft 21 around distribution Slot 11, the steel ball 30 select a cooperation with hemispherical groove 11.

In the present embodiment, the side at 20 minimum radius of eccentric cam is provided with and 55 top end kissing of shank The positioning groove 22 of conjunction.Under original state, handle 10 is parallel with push rod 52, the top end of shank 55 just with eccentric cam 20 Positioning groove 22 be in contact cooperation, the needle-valve of gas spring 50 is opened, and gas spring 50 is in extensible state at this time, and push rod 52 can Freely extend；When needing locking gas spring 50, handle 10 is rotated to the left or to the right, steel ball 30 is made to leave initial hemispherical It is matched after groove 11 with another hemispherical groove 11, the top end and the larger side at diameter of eccentric cam 20 of shank 55 Face is in contact cooperation, and shank 55 declines, and the needle-valve of gas spring 50 is closed, at this time 52 locking of push rod；Pass through this structure, Yong Huke The distance of elongation is freely controlled in the effective travel that push rod 52 extends.

In the present embodiment, 21 one end of shaft of the eccentric cam 20 is provided with positioning column 211, the head of the handle 10 Portion offers the location hole 12 being inserted into for positioning column 211.Wherein, the cross section of the positioning column 211 and location hole 12 is in more Side shape enables shaft 21 to rotate synchronously with handle 10 to limit circumferential free degree of the handle 10 with respect to shaft 21.Wherein, institute The shaft 21 for stating eccentric cam 20 includes two cylindrical bodies for being symmetrically distributed in eccentric wheel both ends of the surface.

In the present embodiment, 21 one end of shaft of eccentric cam 20 is fixed on the head of the handle 10 by screw 60. It is, of course, also possible to be fixedly connected with the head of handle 10 and the shaft 21 of eccentric cam 20 otherwise, such as pass through positioning The interference fit of column 211 and location hole 12, or the clamping engagement etc. by positioning column 211 and location hole 12.

It in the present embodiment, is in 120 ° of angles between three hemispherical grooves 11 there are three the tools of hemispherical groove 11 Distribution.Under the initial free elongation state of push rod 52, spring 40 makes ball be in contact with the hemispherical groove 11 of centre cooperation, with Fix handle 10；When needing locking push rod 52, by 120 ° of the rotation to the left or to the right of handle 10, make steel ball 30 and the left side or the right Hemispherical groove 11 match, to fix handle 10.

In the present embodiment, the drift of the spring 40 is equal to the depth of blind round hole 542, puts into and justifies when spring 40 Aperture side flush when in shape blind hole 542 just with the first hinged ear mount 54；The diameter of the steel ball 30 is greater than spring 40 Internal diameter, the diameter of the steel ball 30 is less than the diameter of blind round hole 542, so that spring 40 can reliably withstand steel ball 30.

The above, the only preferred embodiment of the utility model, not do limit in any form to the utility model System, anyone skilled in the art is in every case without departing from the content of technical solutions of the utility model, according to the utility model Technical spirit any simple modification, equivalent changes and modifications are made to above embodiments, should all belong to the culvert of the utility model Lid range.

Claims (10)

1. a kind of gas spring lockup switch structure, it is characterised in that: including handle, eccentric cam, steel ball and spring, the gas bullet The push rod end of spring is provided with the first hinged ear mount, and an end face of the first hinged ear mount offers cross mounting groove, institute State that eccentric cam is rotatably installed in cross mounting groove and its side is in contact with the needle tip of gas spring, the bias is convex Shaft one end of wheel is exposed to outside the first hinged ear mount side and is fixedly connected with the head of handle, the first hinged ear mount One side offers blind round hole, and the spring is placed in blind round hole, the steel ball pressing spring, the head of the handle Close to the surface of the first hinged ear mount offer it is multiple centered on shaft around distribution hemispherical grooves, the steel ball with Hemispherical groove selects a cooperation.

2. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the eccentric cam minimum to Side at diameter is provided with the positioning groove to match with end at the top of shank.

3. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the shaft of the eccentric cam One end is provided with positioning column, and the head of the handle offers the location hole for positioning column insertion.

4. a kind of gas spring lockup switch structure according to claim 3, it is characterised in that: the positioning column and positioning hole Cross section be in polygon.

5. a kind of gas spring lockup switch structure according to claim 3 or 4, it is characterised in that: the head of the handle It is screwed in shaft one end of eccentric cam.

6. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the hemispherical groove has Three, in 120 ° of angles distributions between three hemispherical grooves.

7. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the diameter of the steel ball is greater than The internal diameter of spring, the diameter of the steel ball are less than the diameter of blind round hole.

8. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the drift of the spring Equal to the depth of blind round hole.

9. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the shaft of the eccentric cam The cylindrical body of eccentric wheel both ends of the surface is symmetrically distributed in comprising two.

10. a kind of gas spring lockup switch structure according to claim 1, it is characterised in that: the cylinder of the gas spring End is provided with the second hinged ear mount.