CN2056880U - Worm device - Google Patents

Abstract

The utility model discloses a worm device. Both ends of a worm screw body made of synthetic resin are coaxially integrated. U-shaped bearings are processed on a basal body. Two axles are embedded into the bearings along radial direction. Moreover, an axial movement stopping part is arranged for preventing the axial movement of the worm screw body, and a loose preventing part is arranged for preventing the loose of each axle from each bearing. By the elastic deformation of the loose preventing part, each axle is permitted to be embedded in each bearing. Therefore, the worm screw body can be easily arranged on the basal body.

Description

Worm device

The utility model relates to a kind of endless screw apparatus, and its body can be rotated relative to matrix by the synthetic resin manufacturing, and supporting easily.

In the past, the worm screw body also was by the synthetic resin manufacturing, but for it can be rotated and be supported with respect to matrix, worm screw main center hole connects is equipped with metal shaft, and this two ends embed dead eye, will deviate to prevent that stop ring embeds in the set annular groove in this end.

Therefore, with respect to matrix, the operation of supporting worm screw body is quite loaded down with trivial details.

A kind of endless screw apparatus that the utility model provides at the problems referred to above just, its body be rotatable and supporting easily with respect to matrix.

For achieving the above object, the following formation of endless screw apparatus of the present utility model: the two ends of the worm screw body of being made by synthetic resin form one with axle, on matrix, form the bearing that is the ∪ font, above-mentioned diaxon radially embeds in this bearing, and, be provided with the axially movable prevention parts that move axially that prevent above-mentioned worm screw body, and prevent that above-mentioned each from deviating from from each bearing deviate to prevent parts, by means of the strain of deviating to prevent parts, allow that above-mentioned each axial each bearing is chimeric.

When deviating to prevent the parts strain, the two end axles of worm screw body is radially embedded in the bearing, moving axially then of diaxon prevents parts to be prevented by moving axially, deviating from by deviating to prevent the parts prevention radially.

Below, according to a description of drawings embodiment of the present utility model.

Fig. 1 is the perspective view of the decomposing state of endless screw apparatus of the present utility model, and 1 is worm screw among the figure, forms one and the outstanding axle 3,4 that is provided with at the two ends of the worm screw body of being made by synthetic resin 2.Wherein an end axle 3 is divided into minor axis 3a and major axis 3b, and minor axis 3a forms one with worm screw body 2, is processed into non-circular embedded hole 5 in the inside of this minor axis 3a.On the end face of major axis 3b, be equipped with the non-circular embedding convex section 6 that the embedded hole 5 with minor axis 3a matches integratedly.And, on the outer peripheral face of the other end of major axis 3b, be provided with the axle collar 7 and two belt pulleys 8,9 of ring-type integratedly.These belt pulleys 8,9 are set at from another of the axle collar 7 distolateral (with the opposite side of worm screw body 2).So, be embedded in the embedded hole 5 of minor axis 3a by means of the embedding convex section 6 of major axis 3b, but the mutual one of minor axis 3a and major axis 3b is rotated and is linked together vertically.One end axle 3 of worm screw body 2 and other end axle 4 are radially embedded along it in the 1st, the 2nd bearing 10,11 and the 3rd bearing 12 respectively, and rotatable.The the 1st～the 3rd bearing 10～12 on the panel-shaped base body of being made by elastic synthetic resin 13, has prominent rectangle bearing body 10a, 11a, the 12a that establishes of one.Reach embedding recess 10b, the 11b of the ∪ font of axis direction two sides opening at the 1st, the 2nd bearing body 10a, above the 11a, an end axle 3 embeds these and embeds among recess 10b, the 11b.And, on the 3rd bearing body 12a, reaching the ∪ font embedding recess 12b that axis direction one side (the 2nd bearing body 11a opposite face) is provided with opening, other end axle 4 embeds this and embeds among recess 12b.On a side of the 1st bearing 10 (side that the 2nd bearing 11 is opposite), be processed into ∪ font embedded groove 14.The axle collar 7 embeds this embedded groove 14, and this axle collar 7 can radially rotate but can not move vertically.Corresponding to the 1st～the 3rd bearing 10～12, on matrix 13, be provided with the 1st, the 2nd, the 3rd and deviate to prevent parts 15,16,17.The the 1st, the 2nd, the 3rd to deviate to prevent that parts 15,16,17 from constituting mutually identical for these, one be convexly set in matrix 13 top elongated rod-shaped main body 15a, 16a, 17a the upper end also one convex with leg-of-mutton protrusions part 15b, 16b, 17b.1st, the 2nd deviates to prevent that parts 15,16 are separated from each other but relatively are arranged at the bearing body 10a of the 1st, the 2nd bearing 10,11, the edge portion of 11a opposite one side.And the 3rd deviates to prevent that parts 17 are arranged at another side edge parts bearing body 12a, same the 2nd bearing 11 opposite faces (deviating to prevent parts 15,16 opposite side edge parts with the 1st, the 2nd) of the 3rd bearing 12.The the 1st～the 3rd deviates to prevent that the protrusion part 15b～17b of parts 15～17 from extending to the opening surface side of the chimeric recess 10b～12b of the 1st～the 3rd bearing 10～12.

Decomposing state shown in Figure 1 is the state in the embedded hole of the embedding convex section 6 of the major axis 3b minor axis 3a that is embedded into an end axle 3.So, make the axle collar 7 be positioned at embedded groove 14 above, an end axle 3 be positioned at the 1st, the 2nd bearing 10,11 above, other end axle 4 be positioned at the 3rd 12 above.After this, the part of two end axles 3,4 is pressed to the below, as shown in Figure 3, these lower, outer perimeter faces of 3,4 the same the 1st～the 3rd deviate to prevent the partly inclined plane sliding-contact of the last lateral margin of 15b～17b of protrusion of parts 15～17.For this reason, the 1st～the 3rd deviates to prevent parts 15～17 its elastic force of resistance, shown in double dot dash line among Fig. 3, crooked laterally.In view of the above, two end axles 3,4 embeds among the embedding recess 10b～12b of the 1st～the 3rd bearing 10～12 by the 1st～the 3rd protrusion of deviating to prevent parts 15～17 15b～17b partly.Like this, when two end axles 3,4 by the 1st～the 3rd protrusion of deviating to prevent parts 15～17 partly after 15b～17b, these the 1st～the 3rd deviate to prevent that parts 15～17 from representing pop into position as the solid line among Fig. 3.Each horizontal plane that protrudes the lower lip of part 15b～17b is positioned near the outer peripheral face upside of two end axles 3,4, and in view of the above, moving radially of axle 3,4 is prevented from.And, in the axle collar 7 is embedded into embedded groove 14, because the end face 4a of other end axle 4 is contacted with the end face of the bearing body 12a of the 3rd bearing 12, axle 3,4 moves along axis direction to be prevented, as shown in Figure 2, worm screw 1 be supported in matrix 13 above, and rotatable.

In the above-described embodiment, though be provided with belt pulley 8,9, this belt pulley 8,9 is not established passable yet.And an end axle 3 is divided into minor axis 3a and major axis 3b, by embedded hole 5 and embed convex section 6 and interconnect, but is not limited thereto, and axle 3 integral body of an end do not cut apart that to make continuous one also passable.Also have, bearing and deviate to prevent the number of packages of parts also is not limited to the above embodiments, can suitably increase and decrease according to the axial length of worm screw.

As mentioned above, constituting of endless screw apparatus of the present utility model: the coaxial one that forms in two ends of the worm screw body of making by synthetic resin, on matrix, be processed to form the bearing of U font, and above-mentioned diaxon radially is embedded among this bearing, and, be provided with the axially movable prevention parts that move axially that prevent above-mentioned worm screw body, and prevent that above-mentioned each from deviating from from each bearing deviate to prevent parts, deviate to prevent the strain of parts by means of this, allow among above-mentioned each bearing of each embedding, therefore, can easily the worm screw body be loaded on the matrix.

The simple declaration of accompanying drawing: accompanying drawing is represented an embodiment of the present utility model,

Fig. 1 is the decomposing state perspective view of endless screw apparatus of the present utility model,

Fig. 2 is the perspective view of endless screw apparatus assembled state,

Fig. 3 is the III of Fig. 2--the III profile.

Claims (1)

1, a kind of endless screw apparatus, the worm screw body of making by synthetic resin [2], be installed in the bearing [11] [12] on the matrix [13] by axle [3a] [4], free to rotate, it is characterized in that, the two ends of above-mentioned axle [3a] [4] with above-mentioned worm screw body [2] are made of one, above-mentioned bearing [11] [12] is made the U font, above-mentioned diaxon [3a] [4] is radially embedded, and possess moving axially of preventing that above-mentioned worm screw body [2] from moving vertically and prevent parts [7] [14], and prevent that each [3a] [4] deviates from from each bearing [11] [12] deviate to prevent parts [16] [17], by means of the strain of deviating to prevent parts [16] [17], allow that above-mentioned each [3a] [4] embed each bearing [11] [12] simultaneously.