TWI527976B - Roller retainer - Google Patents

Description

Roller coupling retainer

The present invention relates to a retainer for use in a roller screw or a linear slide, and more particularly to a roller coupling retainer.

One of the rolling elements commonly used in current roller screw or linear slide designs is the roller, and in order to allow the rollers between the components to circulate continuously and relieve stress, many improved designs install a retainer on the roller; However, different roller cage designs have their own drawbacks. Therefore, how to develop and improve more competitive products for the roller retainer has naturally become the focus of the industry.

Referring to Fig. 1, there is shown a diagram of a "roller holder" of U.S. Patent No. 7,434,999, which is provided in a plurality of flexible, elongated strips 11 at equal distances. The two sides of each of the spacers 12 form a vertically symmetrical partition 13 , and each of the two adjacent spacers 13 accommodates a roller 14 , because the spacer 13 and the roller 14 The surface contact is completely fitted, thus increasing the frictional resistance between the roller 14 and the spacer 13; in addition, since each of the spacers 13 has no hollow design and cannot store oil, the service life of the retainer is shortened.

Referring to Fig. 2, there is shown a diagram of "Roller Connection Holding Device" of the Republic of China Patent No. TW 262995, in which the partition portion 16 is connected to the upper end and the lower end of the opposite holding portions 17, and the two sides of the compartment portion 16 There are respectively a rolling surface 181 which is in line contact with the roller 18 by the abutting side 161, and the two compartments 16 cooperate The two retaining portions 17 form an annular rectangular shape of a hollow structure, thereby storing lubricating oil to increase the service life of the retainer. However, when the conventional retainer is formed, the mold design is in addition to the original upper and lower molds. The mechanism for making the core in the middle forms a hollow model, which causes the mold to be too large and increases the difficulty of manufacturing.

Therefore, how to develop a roller coupling holder which can simultaneously solve the defects of the above two types of retainers is the motive for the development of the invention.

It is an object of the present invention to provide a roller coupling retainer that maintains line contact with the roller to reduce friction between the roller and a lubricating oil to increase the service life of the retainer while requiring only two molds. Can be produced to facilitate the production of mold opening.

In order to achieve the foregoing objective, the present invention provides a roller coupling holder, comprising: two connecting portions; a plurality of holding units spaced apart between the two connecting portions, each of the two holding portions and the connecting portion Forming a receiving space for the roller to be accommodated, each of the holding units includes two longitudinal portions respectively connected to the connecting portion, and respectively bridging the upper and lower ends of the two longitudinal portions and forming a storage with the two vertical portions a first and a second lateral portion of the oil space, wherein: the first lateral portion has a first left side surface, a first right side surface opposite to the first left side surface, and a first left side surface is protruded from the first left side surface a first left spacer portion in which the roller rolling surface is in line contact, a first right spacer portion protruding from both sides of the first right side surface and in line contact with the roller rolling surface, and a first right side surface a first parting surface that is recessed and located between the two first right spacers, and a a first lateral side of the first left spacer, a lateral distance of the first lateral side is greater than or equal to a lateral distance of the first parting surface; the second lateral portion has a second left side, and the second side is opposite to the first a second right side surface of the left side surface, a second left partition portion protruding from the two sides of the second left side surface and in line contact with the rolling surface of the roller, and a second left side surface recessed by the second left side surface a second parting surface between the second left spacers, a second right spacer protruding from the second right side surface and in line contact with the roller rolling surface, and a second right spacing disposed at the second right spacing a second lateral side of the portion, the lateral distance of the second lateral side being greater than or equal to a lateral distance of the second partial mold surface.

Preferably, the second parting surface of the second lateral portion is in the same plane as the first partial surface of the first lateral portion.

Preferably, the extending surface of the second partial surface of the second lateral portion is spaced apart from the extending surface of the first partial surface of the first lateral portion.

Preferably, the first left partition portion of the first horizontal portion intersects the bottom surface and has a first left abutting side edge in line contact with the roller rolling surface, and each of the first right spacer portions The outer side and the bottom surface intersect at a first right abutting side in line contact with the roller rolling surface.

Preferably, the second left spacer portion of the second lateral portion intersects the top surface and has a second left abutting side in line contact with the roller rolling surface, the second right interval The outer side surface intersects the top surface and has a second right abutting side edge in line contact with the roller rolling surface.

Techniques, means and other methods for achieving the above objects in accordance with the present invention For the purpose of the present invention, a preferred embodiment is described in detail with reference to the drawings.

Referring to Figures 3 to 11, a roller coupling retainer provided by an embodiment of the present invention is suitable for roller mounting for a roller screw or a linear slide. The roller coupling retainer comprises: two links The sections 20 are arranged in parallel.

The plurality of holding units A are equidistantly disposed between the two connecting portions 20, and an accommodating space B for accommodating the rollers 30 is formed between each of the holding units A and the connecting portions 20, and each of the holding units A a longitudinal portion 40 connected to the connecting portion 20 and a first and second lateral portions 50 and 60 respectively bridging the upper and lower ends of the two longitudinal portions 40 and forming an oil storage space C with the two longitudinal portions 40. The first lateral portion 50 has a first left side surface 51, a first right side surface 52 opposite to the first left side surface 51, and a first left side surface 51 protruding from the rolling surface of the roller 30. a first left spacer portion 53 that is in line contact with the first right spacer portion 54 that is protruded from both sides of the first right side surface 52 and that is in line contact with the rolling surface 31 of the roller 30, and a first a first split surface 55 that is recessed between the right side surface 52 and located between the two first right spacers 54. In this embodiment, the first left spacer 53 of the first lateral portion 50 has a first lateral side 531, the lateral distance X1 of the first lateral side surface 531 is greater than the lateral distance X2 of the first partial surface 55 (or the lateral distance X1 of the first lateral side 531 is equal to the horizontal of the first partial surface 55) Distance X2, as shown in FIG. 14); In addition, the second A first left abutting side 532 is in line contact with the rolling surface 31 of the roller 30, and an intersection of the outer side and the bottom surface of each of the first right spacers 54 has a A first right abutting side 541 in line contact with the rolling surface 31 of the roller 30.

The second lateral portion 60 has a second left side surface 61, a second right side surface 62 opposite to the second left side surface 61, and is respectively protruded from both sides of the second left side surface 61 and is rolled with the roller 30. a second left partition portion 63 that is in line contact with the second, a second partial mold surface 64 that is recessed by the second left side surface 61 and located between the two second left partition portions 63, and a second right side surface The second right spacer 65 is disposed in a line and is in line contact with the rolling surface 31 of the roller 30. In this embodiment, the second right spacer 65 of the second lateral portion 60 has a second lateral side 651. The lateral distance Y1 of the second lateral side 651 is greater than the lateral distance Y2 of the second partial surface 64 (or the lateral distance Y1 of the second lateral side 651 is equal to the lateral distance Y2 of the second partial surface 64, as shown in FIG. In addition, as shown in FIG. 9, the second parting surface 64 of the second lateral portion 60 and the first parting surface 55 of the first lateral portion 50 are in the same plane F (or the second The extending surface 641 of the second parting surface 64 of the lateral portion 60 is spaced apart from the extending surface 551 of the first parting surface 55 of the first lateral portion 50 by a distance H, as shown in Fig. 15; secondly, each of the Two left spacers 63 The surface intersects the top surface and has a second left abutting side 631 in line contact with the rolling surface 31 of the roller 30. The second right spacing portion 65 has an outer surface and a top surface intersecting the roller 30. The rolling surface 31 is in a line contact with the second right abutting side 652.

The above description is the structure and configuration description of each main component of the embodiment of the present invention.

Accordingly, each of the holding units includes two longitudinal portions 40 respectively connected to the connecting portion 20, and first and second lateral portions 50, 60 respectively bridging the upper and lower ends of the two vertical portions 40. The two lateral portions 50, 60 and the two longitudinal portions 40 form an oil storage space C. The oil storage space C can increase the storage space of the lubricating grease to achieve the purpose of increasing the service life of the retainer.

In addition, the first left abutting side 532 of the first left partition portion 53 of the first lateral portion 50 of the first horizontal portion 50 of the holding unit A is held and spaced apart from each other. The second left abutting side 631 of the two second left spacers 63 of the two lateral portions 60, the first right abutting side of the first right partition portion 54 of the first horizontal portion 50 of the other holding unit A 541. The second right abutting side 652 of the second right partition portion 65 of the second lateral portion 60 is in line contact with the rolling surface 31 of the roller 30. Therefore, the retainer and the roller 30 can be lowered. Friction between them while reducing frictional resistance.

It should be noted that, as shown in FIGS. 12A, 12B, 13A, and 13B, when the holder of the present invention is plastically injection molded by the mold 70, the mold includes a first mold 71 and a second mold 72, due to the holder. The upper connecting portion 20 and the first left spacer portion 53, the second second left spacer portion 63, the two first right spacer portions 54, and the second right spacer portion 65 of the holding unit A are all in the same vertical direction. The structural design of the direction or the same horizontal direction is alternately arranged in the holding unit A, and the first and second mold cores 711 and 721 can be easily passed. It is not required to be produced by pre-burying a roller in place of a mold as in the prior art.

On the other hand, the first and second lateral portions 50, 60 bridging the two longitudinal portions 40, the first partial mold surface 55 and the second partial mold surface 64 existing on the same plane F, are transmitted through the first mold. 71 and the first and second mold cores 711 and 721 of the second mold 72, so that the two longitudinal portions 40 of the holding unit A and the first and second transverse portions 50, 60 are combined into a hollow ring shape. The space for storing the lubricating grease does not need to form a hollow mold in the middle of the mechanism for forming the core. Therefore, the retainer of the present invention can be produced only by using two molds during the molding to facilitate the production of the mold, thereby avoiding excessive mold volume and increase. The difficulty of manufacturing.

In the above, the embodiments and the illustrations are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal changes and modifications made by the scope of the patent application of the present invention should be It is within the scope of the patent of the present invention.

"Knowledge"

11‧‧‧Connecting Department

12‧‧‧ Keeping Department

13‧‧‧Interval

14‧‧‧roller

16‧‧‧Interval

161‧‧‧Right side

17‧‧‧ Keeping Department

18‧‧‧roller

181‧‧‧ rolling surface

"this invention"

A‧‧‧Holding unit

B‧‧‧ accommodating space

C‧‧‧ oil storage space

20‧‧‧Connecting Department

30‧‧‧roller

31‧‧‧ rolling surface

40‧‧‧ vertical

50‧‧‧ first horizontal

51‧‧‧ first left side

52‧‧‧ first right side

53‧‧‧First left spacer

531‧‧‧ first lateral side

532‧‧‧First left to the top side

54‧‧‧First right compartment

541‧‧‧First right abutting side

55‧‧‧The first parting surface

60‧‧‧ second horizontal

61‧‧‧Second left side

62‧‧‧second right side

63‧‧‧Second left compartment

631‧‧‧Second left to the top side

64‧‧‧Second parting surface

65‧‧‧Second right compartment

651‧‧‧Second lateral side

652‧‧‧Second right to the top side

71‧‧‧First mould

711‧‧‧The first model

72‧‧‧Second mold

721‧‧‧The second mold

X1, X2, Y1, Y2‧‧‧ lateral distance

F‧‧‧ plane

H‧‧‧ distance

Figure 1 is a diagram of one of the "roller holders" of U.S. Patent No. 7,434,999.

Fig. 2 is a perspective view showing an embodiment of the present invention, showing a state in which the present invention is combined with a roller.

Figure 3 is a partial enlarged view of an embodiment of the present invention.

Figure 4 is a partially enlarged view of another perspective of an embodiment of the present invention.

Figure 5 is a cross-sectional view of an embodiment of the present invention.

Figure 6 is a cross-sectional view of another embodiment of the present invention.

Figure 7 is a partial top view of an embodiment of the invention.

Figure 8 is a partial top view of an embodiment of the present invention showing the state in which the present invention is combined with a roller.

Figure 9 is a cross-sectional view of line 8-9 of Figure 8.

Figure 10 is a cross-sectional view of line 10-10 of Figure 8.

Figure 11 is a cross-sectional view of line 11-11 of Figure 8.

Fig. 12A is a schematic cross-sectional view showing the injection of the mold used in the present invention, showing the state in which the mold is closed.

Figure 12B is a cross-sectional view of line 12A-12B of Figure 12A.

Fig. 13A is a cross-sectional view showing the injection of the mold used in the present invention, showing the state in which the mold is opened.

Figure 13B is a cross-sectional view of line 13A-13B of Figure 13A.

Figure 14 is a partial top plan view of another embodiment of the present invention.

Figure 15 is a cross-sectional view showing still another embodiment of the present invention.

A‧‧‧Holding unit

B‧‧‧ accommodating space

C‧‧‧ oil storage space

20‧‧‧Connecting Department

30‧‧‧roller

31‧‧‧ rolling surface

40‧‧‧ vertical

50‧‧‧ first horizontal

51‧‧‧ first left side

52‧‧‧ first right side

53‧‧‧First left spacer

531‧‧‧ first lateral side

532‧‧‧First left to the top side

54‧‧‧First right compartment

541‧‧‧First right abutting side

55‧‧‧The first parting surface

60‧‧‧ second horizontal

61‧‧‧Second left side

62‧‧‧second right side

63‧‧‧Second left compartment

631‧‧‧Second left to the top side

64‧‧‧Second parting surface

651‧‧‧Second lateral side

Claims (5)

A roller coupling holder includes: two connecting portions; a plurality of holding units spaced apart between the two connecting portions, and each of the holding units and the connecting portion forms a receiving space for the roller to be accommodated Each of the holding units includes two longitudinal portions respectively connected to the two connecting portions, and first and second lateral portions respectively bridging the upper and lower ends of the two longitudinal portions and forming an oil storage space with the two vertical portions, wherein: The first lateral portion has a first left side surface, a first right side surface opposite to the first left side surface, and a first left partition portion protruding from the first left side surface and in line contact with the roller rolling surface a first right spacer protruding from the first side of the first right side surface and in line contact with the rolling surface of the roller, and a recessed by the first right side surface and located between the two first right spacing portions a first partial surface, and a first lateral side disposed on the first left partition, the lateral distance of the first lateral side being greater than or equal to a lateral distance of the first partial surface; the second lateral portion has a second left side surface, a second right side surface opposite to the second left side surface, and the second left side surface a second left partition portion protruding from the side and in line contact with the rolling surface of the roller, a second partial mold surface recessed by the second left side surface and located between the two second left partition portions, a second right spacer protruding from the second right side surface and in line contact with the roller rolling surface, and a second lateral side disposed on the second right spacing portion, the lateral distance of the second lateral side being greater than Or equal to the lateral distance of the second parting surface. The roller coupling holder of claim 1, wherein the second parting surface of the second lateral portion is in the same plane as the first partial surface of the first lateral portion. The roller coupling holder according to claim 1, wherein the extending surface of the second partial surface of the second lateral portion is spaced apart from the extending surface of the first partial surface of the first lateral portion. The roller coupling holder according to claim 1, wherein the first left partition portion of the first lateral portion intersects the bottom surface and has a first line in line contact with the roller rolling surface. The left abutting side edge, each of the first right spacer portion intersecting the bottom surface has a first right abutting side edge in line contact with the roller rolling surface. The roller coupling holder according to claim 1, wherein each of the second left spacers in the second lateral portion has a line contact with the roller rolling surface at an intersection of the outer side surface and the top surface. The second left abutting side edge, the outer side of the second right spacer intersecting the top surface has a second right abutting side edge in line contact with the roller rolling surface.