CN2202661Y

CN2202661Y - Rolling ball type active prop stand

Info

Publication number: CN2202661Y
Application number: CN 94209424
Authority: CN
Inventors: 樊振芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-25
Filing date: 1994-04-25
Publication date: 1995-07-05
Anticipated expiration: 2004-04-25

Abstract

The utility model provides a rolling ball type active prop stand, which has simple structure, flexible rotation, reliable installation and operation and long service life. The utility model is composed of a connector, a spherical cover and a rolling ball, wherein, the spherical cover is a spherical shell which is larger than a half made by adopting the methods of stretch and rotary extrusion, the upper port of the spherical cover can be used for coupling with the connector, the diameter of the rolling ball is slightly smaller than the internal diameter of the spherical cover, the diameter of the rolling ball is slightly larger than the diameter of the circular ring of the bottom opening of the spherical cover. The rolling ball can be loaded into the spherical cover and coupled with the connector, forming an approximately goblet-shaped whole body. The utility model can universally rotate; the function is reliable. The utility model can be made into serial products with different coupling modes according to different requirements.

Description

Rolling ball type active prop stand

The utility model belongs to a kind of mechanical tourelle.

Should have the flexible and supporting failure-free effect of rotation as active leg.Active in the market leg has active leg of rotating shaft ball formula and wheeled active leg (shown in Figure 1A, B); The shortcoming of the active leg of rotating shaft ball formula is: 1. complex structure, part are many; 2. stressed unreasonable, gravity and supporting power do not overlap, and a moment is arranged, thereby it is not firm to cause leg to install, rotate dumb, part is fragile.3. changeing the ball material is hard rubber, easily aging easily cracked.The shortcoming of wheeled active leg, same as above substantially.Generally speaking these two kinds of active legs use underaction, and the cost height is not firm again.

The purpose of this utility model provide a kind of simple in structure, rotate flexibly, install and use the active leg of reliable, long-lived bobbin type.

The utility model is made up of three parts: one is connector, is used to connect supported material and rivets second part one enclosed globe shade; Enclosed globe shade is more than half spherical shell made from stretching and spin-on process; The 3rd part is spin, and it is a smooth ball of being made by special plastic, the characteristics that have the intensity height, lubricate voluntarily, wear resisting property are good; The upper port of enclosed globe shade is for being used for connecting with connector, and the diameter of spin is slightly less than the internal diameter of enclosed globe shade, but more bigger than the garden ring diameter of the bottom open-mouth of enclosed globe shade; Spin pack into enclosed globe shade and with become one after connector connects, be goblet shape substantially.

The utility model has the advantages that according to what technique scheme realized 1. parts simple in structure are few; 2. stressed reasonable installation is firm; 3. can universally rotate reliable effect; 4. durable in use, price is not high; 5. can make the series of products of different connecting modes according to different needs.

Figure 1A is the active leg of existing rotating shaft ball formula;

Figure 1B is existing wheeled active leg;

Fig. 2 A is the block diagram of the utility model one embodiment;

Fig. 2 B is the cutaway view of the utility model one embodiment;

Fig. 3 is the facing and birds-eye view of connector one embodiment among Fig. 2;

Fig. 4 is the cutaway view of enclosed globe shade among Fig. 2.

As shown in Figure 2, the utility model is made up of three parts: one is connector, and by the way, connector can also can be column for tabular, specifically uses any form can be according to different supported materials and difference; Present embodiment adopts tabular, is called gusset piece (1) later on, and referring to Fig. 3, the gusset piece made from pressing (1) is preferably thick steel plate of 2mm or aluminium sheet, and several screw holes (7) are arranged on its surrounding, in order to connect with supported material sports association; There are a centre hole (8) and a diameter in its center greater than the step (5) of centre hole (8) to lower recess, and it is used to rivet second part-enclosed globe shade (2); Enclosed globe shade (2) is more than half spherical shell made from stretching and spin-on process, as shown in Figure 4, the formed body diameter of its upper port bottleneck (4) is slightly less than the centre hole (8) on the gusset piece (1), be preferably and closely cooperate, and the formed cylinder height of upper port bottleneck (4) is wanted suitable thickness greater than gusset piece, connect so that it can carry out the preferable riveting of turning over gusset piece, enclosed globe shade (2) material can be thick steel plate of 1.5mm or aluminium sheet; The 3rd part is spin (3), it is a smooth ball of being made by special plastic, the characteristics that have the intensity height, lubricate voluntarily, wear resisting property are good, the diameter of spin (3) is slightly less than the internal diameter of enclosed globe shade (2), but more bigger than the formed garden of bottom open-mouth (6) ring diameter of enclosed globe shade (2); The upper port bottleneck (4) of enclosed globe shade (2) is used for connecting with gusset piece (1), spin (3) pack into enclosed globe shade (2) and with become one after gusset piece (1) connects, be goblet shape substantially.

The utility model is assembled by metal gusset piece (1), metal ball shaped cover (2) and plastics spin (3).Burring, sharp limit be to carry out before the assembling and garden and surface-treated operation fallen; Assembling divided for two steps: the first step, the big mouth down of enclosed globe shade (2) is put on the sphere inner tube of a tyre, the upper port bottleneck (4) that gusset piece (1) is enclosed within enclosed globe shade (2) is located again, turning over riveting with squeeze riveter locates to the step (5) of lower recess in the centre hole (8) of gusset piece (1), become shape shown in Fig. 2 b, second step, dress spin (3), gusset piece (1) that the first step is riveted and enclosed globe shade (2) conjuncted, big mouth up and the plate face of gusset piece (1) be placed on the special-purpose tire of air inlet, give (3) external force of spin above, it is pressed in the bottom open-mouth (6) of enclosed globe shade (2), form an annular sealing strip, at this moment the bottom feeds the blast of 0.5～0.6MPa, shape pressure chamber in enclosed globe shade (2) chamber, make enclosed globe shade (2) bottom open-mouth (6) elastic expansion occur, it is big that instantaneous bore becomes, and spin (3) is promptly packed in it, finishes assembling, the tolerance clearance of spin (3) and enclosed globe shade (2), by tolerance control, both reached and rolled flexibly, contain again into the requirement in it.Border according to the facts is installed adjusts the size of pressurization and blast, to realize the best effect of assembling.

Claims

1, the active leg of a kind of bobbin type is made up of connector, enclosed globe shade and three parts of spin, it is characterized in that: connector can be the tabular column that also can be; Enclosed globe shade is more than half spherical shell made from stretching and spin-on process, and the enclosed globe shade upper end is provided with bottleneck formula opening cylinder, in order to link with connector; Spin is a smooth ball of being made by special plastic; Spin pack into enclosed globe shade and with become one after connector connects, be goblet shape substantially.

2, the active leg of bobbin type according to claim 1, when to it is characterized by connector be tabular, therein place, heart hole be provided with one to the slightly larger in diameter of lower recess in the step of centre hole.

3, the active leg of bobbin type according to claim 1, the formed cylinder height of upper port bottleneck that it is characterized by enclosed globe shade is wanted suitable thickness greater than gusset piece.

4, the active leg of bobbin type according to claim 1, the diameter that it is characterized by spin is slightly less than the internal diameter of enclosed globe shade, but more bigger than the garden ring diameter of the bottom open-mouth of enclosed globe shade.