TWI476332B - Ball screw with a part replaceable anti-dust module - Google Patents

Description

Ball screw with dustproof module with replaceable accessories

The present invention provides a ball screw for a dustproof module having a replaceable accessory that is associated with a linear actuator.

Generally, the ball screw mainly comprises a nut that can be linearly displaced on a screw, and a rolling path between the nut and the screw is accommodated by the plurality of rolling elements, and the rotation of the screw and the continuous rolling of the rolling elements are The nut smoothly produces a linear displacement action; while the nut is linearly displaced relative to the screw, external dust may intrude into the nut and affect the smoothness and precision of the transmission, so that the two nuts of the nut The end mounting scraper is used to scrape the dust on the rolling path during the linear displacement action; and the general nut 10 as shown in FIG. 1 , the nut 10 itself is processed only to form the corresponding dust scraper A. The first pocket 11 and the dust-proof fitting B such as a felt or a brush are required to be subjected to secondary processing, so that the nut 10 is subjected to secondary processing to form a corresponding fitting. The second tank 12 of B, in this way, although it is possible to upgrade and install the accessory B through secondary processing, it is obviously inconvenient for the user to perform the secondary assembly to perform the upgrade assembly of the accessory. Generate additional use , While the need for improvement in the necessary view of this, the present inventors have intensive studies and deeper concept, after the test for multiple development, and finally invented a ball screw having replaceable accessory modules of dust.

The invention provides a ball screw of a dustproof module with replaceable accessories, and the main purpose thereof is to improve the difficulty of processing and the use cost by improving the conventional nut to be assembled through the secondary processing.

To achieve the foregoing objective, the present invention provides a ball screw of a dustproof module having a replaceable accessory, comprising: a screw having an outer spiral groove on an outer surface; and a nut having an inner spiral groove, the nut being worn The inner spiral groove and the outer spiral groove are arranged to form a rolling path for receiving the plurality of rolling elements, and the inner surfaces of the two ends of the nut are respectively provided with a set of matching rotary grooves, and the set is arranged The slot is formed by an insertion section connected to a positioning section, and one end of the positioning section has a stop surface, and the stop surface has a distance of a rotation arc length between the insertion section; a set of accessories and a second set of accessories are respectively positioned in the set of rotary slots, wherein: the first set of accessories is a ring structure and the inner surface of the circumference forms a fitting groove for receiving the dustproof fitting, and the first a plurality of positioning portions are disposed on one end surface of the set of accessories, and an outer circumference of the first set of accessories is further formed with a first assembly portion, and the first group of accessories is inserted into the positioning portion by the insertion portion And can be pivoted within the positioning section; The second set of fittings has a ring structure and a plurality of mating positioning portions are formed on one end surface thereof, and the outer peripheral surface of the second set of fittings is further formed with a second assembly portion, and the second assembly portion is rotated by the group The insertion section of the slot is inserted into the positioning section, and the second group is limited The insertion section is adjacent to the first assembly portion, and the mating positioning portion is engaged with the positioning portion.

The first set of accessories and the second set of accessories can be disassembled by the nut, and the first set of accessories and the second set of accessories can be used for the user to place the required dustproof accessories without secondary processing. Replace the dustproof parts, improve the applicability and freedom of use, and increase the overall economic value of the product.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [detailed description of the drawings] as follows: The ball of the dustproof module with replaceable accessories of the present invention A preferred embodiment of the screw, as shown in Figures 2 through 6, comprises: a screw 20 having an outer spiral groove 21 on the outer surface; a nut 30 having an inner spiral groove 31 on the inner surface, the nut 30 being worn The inner spiral groove 31 and the outer spiral groove 21 are disposed to form a rolling path for receiving the plurality of rolling elements. The inner surfaces of the two ends of the nut 30 are respectively provided with a set of matching rotary grooves 32. The insertion slot 32 is formed by an insertion section 321 and a positioning section 322. The insertion section 321 and the positioning section 322 are formed along the circumference of the nut 30, and each of the two ends of the positioning section 322 has a a stop surface 323, the stop surface 323 and the insertion section 321 have a distance of a rotation arc length S0, and the nut 30 is adjacent to the positioning section 322 of the set of the rotation groove 32 to form a contact surface 33. In addition, the insertion section 321 has an insertion section arc length S1 and an insertion section depth D1. The insertion section corresponding to the arc length of the rotating arc length S1 S0, and the positioning section 322 has a positioning section arc length S2 And a positioning segment depth D2, the positioning segment arc length S2 is at least twice the insertion segment arc length S1, and the positioning segment arc length S2 of the embodiment is three times the insertion segment arc length S1, the nut 30 A first set of fittings 40 and a second set of fittings are respectively disposed at the two ends and are respectively positioned on the set of matching slots 32, wherein: the first set of fittings 40 is a ring structure, and the inner surface of the first set of fittings 40 is A plurality of positioning portions 42 are formed on one end surface of the first set of fittings 40, and a plurality of positioning portions 42 are disposed on one end surface of the first set of fittings 40. The positioning portion 42 of the embodiment is a circular hole; and the outer periphery of the first assembly 40 is further formed with a first assembly portion 43 having a shape corresponding to the combination of the nut 30 The insertion portion 321 of the 32 is shaped, and the first assembly portion 43 has a first assembly width W1 and a first assembly length L1, and the first assembly width W1 is equivalent to the insertion portion arc length. S1, the first set of the length L1 corresponds to the depth D2 of the positioning section; the first set of fittings 40 is configured by the first set of engaging portions 43 by the set of the rotary grooves 32 The insertion portion 321 is inserted into the positioning portion 322, and is pivoted to the first assembly portion 43 against the stop surface 323 of the positioning portion 322; and the first assembly 40 is abutted against the abutment surface 33. The second set of fittings 50 is a ring-shaped structure, and the plurality of mating positioning portions 51 are formed on one end surface of the second set of fittings 50. The mating positioning portion 51 of the present embodiment is a cylinder, and the second set of fittings 50 The outer peripheral surface is further formed with a second assembly portion 52. The shape of the second assembly portion 52 of the present embodiment is shaped to correspond to the insertion portion 321 of the combination rotary groove 32, and the second assembly portion 52 has a second group. a fitting width W2 and a second assembly length L2, the second assembly width W2 is equivalent to the insertion segment arc length S1, and the second combination The length L2 of the portion is greater than the depth D1 of the insertion portion, and the length L2 of the second assembly portion in the embodiment is equivalent to the sum of the depth D1 of the insertion portion and the depth D2 of the positioning portion, whereby the second assembly 50 is The second assembly portion 52 is inserted into the positioning portion 322 by the insertion portion 321 of the set of the rotation groove 32, and the second assembly portion 52 is limited to the insertion portion 321 and adjacent to the first assembly portion 43. The mating positioning portion 51 of the second set of fittings 50 is engaged with the positioning portion 42 of the first set of fittings 40. In this embodiment, the cylinders of the second set of fittings 50 are inserted into the circular holes of the first set of fittings 40 to form a positioning; The positioning portion 42 may also be provided as a cylinder, and the fitting positioning portion 51 may be provided as a circular hole for the same purpose.

The above is the structural configuration and characteristics of the ball screw of the dustproof module with the replaceable accessory of the present invention, and the ball screw of the present invention is for the user to replace the dustproof component C by itself, and the method is to use the first A set of accessories 40 is disposed in the assembly slot 32 of the nut 30, and the first assembly portion 43 of the first assembly 40 is first inserted into the positioning segment 322 from the insertion portion 321 . As shown in FIG. 3, the first set of fittings 40 are then rotated to rotate the first set of engaging portions 43 of the first set of fittings 40 to the stop faces 323 of the set of matching slots 32. As shown in FIG. 4, at this time, the first set of fittings 40 can be restrained in the set of the rotary grooves 32 without coming out; then, the dustproof fitting C can be accommodated in the first A set of fittings 40 in the fitting pocket 41, and finally, the second set of fittings 50 can be inserted by the second set of fittings 52 from the insertion section 321 of the set of the rotary grooves 32 and abut against the first set The matching portion 43 and the positioning portion 51 on the second set of fittings 50 and the positioning portion of the first set of fittings 40 The second set of fittings 50 can be coupled to the first set of fittings 40 and positioned to the dustproof fitting C, and the second set of fittings 50 penetrates the positioning through the second set of fittings 52. The configuration of the segment 322 can again limit its pivoting action. As shown in FIG. 5, of course, the first set of fittings 40 that are in contact with the second set of fittings 50 are also limited by the second set of fittings 50. Rotating, thereby completing the assembly of the accessory; as can be seen from the above description, the ball screw of the dustproof module with the replaceable accessory of the present invention can provide the user to replace and upgrade the type of the dustproof component C without the need for secondary processing. The replacement of the dustproof fitting C is completed, and the assembly is also very simple, and the demand for use is very high, and the first set of the fitting 40 and the second set of the fitting 50 of the present invention can be produced through plastic injection molding, and the manufacturing cost is low. It can also improve the overall applicability and functionality. Of course, it can also increase the user's willingness to use and improve economic efficiency.

"Knowledge Technology"

A‧‧‧dust scraper

B‧‧‧Accessories

10‧‧‧ nuts

11‧‧‧First slot

12‧‧‧Second capacity

"this invention"

20‧‧‧ screw

21‧‧‧Spiral groove

30‧‧‧ Nuts

31‧‧‧Spiral groove

32‧‧‧Group with rotary slot

321‧‧‧Insert paragraph

322‧‧‧ positioning segment

323‧‧‧ stop surface

33‧‧‧ by face

40‧‧‧First set of accessories

41‧‧‧Accessory

42‧‧‧ Positioning Department

43‧‧‧The first group of parts

50‧‧‧Second set of accessories

51‧‧‧With the positioning department

52‧‧‧Second Division

C‧‧‧Dust accessories

S0‧‧‧Rotating arc length

S1‧‧‧insert arc length

S2‧‧‧ positioning section arc length

D1‧‧‧insert depth

D2‧‧‧Position depth

L1‧‧‧First set length

L2‧‧‧Second group length

W1‧‧‧The first set of fitting width

W2‧‧‧Second group fitting width

Fig. 1 is a schematic view showing a nut arrangement wiper and accessories of a general ball screw.

Fig. 2 is a perspective exploded view showing the ball screw of the dustproof module with replaceable components of the present invention.

Fig. 3 is a first schematic view showing the assembly operation of the ball screw of the dustproof module with the replaceable accessory of the present invention, and showing the initial state of assembling the first set of components.

Fig. 4 is a second schematic view showing the assembly operation of the ball screw of the dustproof module with the replaceable accessory of the present invention, and shows the state in which the first set of components are assembled and the complete limit is completed.

Fig. 5 is a schematic view showing the assembly operation of the ball screw of the dustproof module with replaceable parts according to the present invention, and shows the state of assembling the dustproof fitting and the second set of fittings.

Fig. 6 is a perspective view showing the assembled three-dimensional appearance of the ball screw of the dustproof module with replaceable parts according to the present invention.

20‧‧‧ screw

21‧‧‧Spiral groove

30‧‧‧ Nuts

31‧‧‧Spiral groove

32‧‧‧Group with rotary slot

321‧‧‧Insert paragraph

322‧‧‧ positioning segment

323‧‧‧ stop surface

33‧‧‧ by face

40‧‧‧First set of accessories

41‧‧‧Accessory

42‧‧‧ Positioning Department

43‧‧‧The first group of parts

50‧‧‧Second set of accessories

51‧‧‧With the positioning department

52‧‧‧Second Division

C‧‧‧Dust accessories

Claims (10)

A ball screw of a dustproof module with a replaceable accessory, comprising: a screw having an outer spiral groove on the outer surface; a nut having an inner spiral groove, the nut being sleeved outside the screw, so that the nut The inner spiral groove and the outer spiral groove are combined to form a rolling path for the plurality of rolling elements to be accommodated, and the inner surfaces of the two ends of the nut are respectively provided with a set of matching rotary grooves, and the set of the rotary grooves is connected by an insertion section. The insertion segment has an insertion segment arc length and an insertion segment depth, the positioning segment has a positioning segment arc length, the positioning segment arc length is at least twice the insertion segment arc length, and one end of the positioning segment Having a stop surface, the stop surface and the insertion portion have a distance of a rotating arc length; a first set of fittings and a second set of fittings are respectively disposed at two ends of the nut, respectively, and are respectively positioned in the group a slot, wherein: the first set of accessories is a ring structure and the inner surface of the circumference forms a fitting groove for accommodating a dustproof fitting, and a plurality of positioning portions are disposed on one end surface of the first set of accessories, and the first The outer circumference of the set of parts is further shaped into a first group The first set of fittings is inserted into the positioning section by the insertion section by the first assembly portion, and is pivotally displaceable in the positioning section; and the second set of fittings is a ring structure and is formed on one end surface thereof. The second assembly portion has a second assembly portion, and the second assembly portion has a second assembly portion length, and the second assembly portion has a length greater than the insertion portion depth. The second group of the matching portion is inserted into the positioning portion by the insertion portion of the set of the rotary groove, and the second assembly portion is limited to the insertion portion and adjacent to the first assembly portion, and the matching positioning portion cooperates Positioned with the positioning portion. The ball screw of the dustproof module with a replaceable accessory according to the first aspect of the invention, wherein the nut is formed adjacent to the positioning section of the set of the rotary groove, the first set of accessories Close to the abutment surface. The ball screw of the dustproof module with a replaceable accessory according to the first aspect of the invention, wherein the first grouping portion has a first grouping portion width, the rotating arc length and the first grouping portion The width is equivalent to the arc length of the insertion segment. The ball screw of the dustproof module with a replaceable accessory according to the third aspect of the invention, wherein the two ends of the positioning section respectively have a stop surface, and the insertion section has an arc length of three times. Arc length. The ball screw of the dustproof module with a replaceable accessory according to the first aspect of the invention, wherein the positioning segment has a positioning section depth, and the first assembly portion has a first assembly length, the first A set of fitting lengths corresponds to the depth of the positioning section. The ball screw of the dustproof module with replaceable components according to claim 5, wherein the length of the second group of fittings corresponds to the sum of the depth of the insertion section and the depth of the positioning section. The ball screw of the dustproof module with the replaceable accessory according to the first aspect of the invention, wherein the positioning portion of the first set of fittings is a circular hole, and the fitting positioning portion of the second set of fittings is a cylinder. The ball screw of the dustproof module with a replaceable accessory according to the first aspect of the invention, wherein the shape of the first group of the first set of fittings corresponds to the insertion section of the combination groove of the nut Shape forming. The ball screw of the dustproof module having the replaceable accessory according to the first aspect of the invention, wherein the first set of components and the second set of components are formed by injection molding. The ball screw of the dustproof module having the replaceable accessory according to the first aspect of the invention, wherein the dustproof component is a felt, a brush, a scraper ring or an oil seal.