TWI655378B - Actuator and wire fixing structure thereof - Google Patents

Abstract

A wire fixing structure is used to mount the body of the actuator. The wire fixing structure comprises an end cover, an upper cover and a wire covering seat. The end cover is mounted at one end of the body and has a first recess and a first abutment, the first recess having two first recesses. The upper cover includes an upper wall and a side wall extending downward from a rear end of the upper wall, the side wall is coupled to a top of the end cover, the side wall has a second recess and a second abutting portion, and the second recess has two The second groove. The wire covering seat includes a neck portion assembled in the first and second recesses and having two bumps on the neck portion, the two bumps being located in the first and second grooves The front edge of the neck portion has a bearing surface, and the bearing surface abuts the first and second abutting portions.

Description

Actuator and its wire fixing structure

The present invention relates to a wire fixing structure, and more particularly to a wire fixing structure suitable for an actuator.

The actuators, which are widely used in industrial machines, are powered by a motor and then driven by a screw to enable linear movement of the load end. In particular, when the screw is driven to rotate by the motor, the slider engaged with the screw can move relative to the linear track, so that the working mechanism on the carrier can be driven to move linearly. Current actuator wires (including, for example, motor power cords and/or signal transmission lines, etc.) are typically covered by a wrap that is secured to the body of the actuator in a tight fit. However, the fixing method of the conventional wire covering sleeve, in addition to the unfavorable assembly, is also easy to cause the covering sleeve to loosen or fall off due to the user's careless pulling, thereby causing the wire to be damaged.

The present inventors have in view of this, and have carefully studied and designed the present invention. Accordingly, it is a primary object of the present invention to provide a wire fixing structure suitable for an actuator which has the advantages of ease of assembly and can effectively prevent the wire covering seat of the actuator from loosening and falling off. , thereby increasing the service life of the wire.

A wire fixing structure according to an embodiment of the present invention is mounted on a body of an actuator. The wire fixing structure comprises an end cover, an upper cover and a wire covering seat. The first end of the first recess has a joint portion, and the first recess has a first recess The leading edge of the recess has a first abutment. The upper cover includes an upper wall and a side wall extending downward from a rear end of the upper wall, the side wall is coupled to a top of the end cover, the bottom end of the side wall has a second recess, and the second recess and the end cover a second recess having at least one second recess, the second recess being substantially opposite the first recess of the first recess, and a second abutting portion extending downward from a rear end of the upper wall And located at the inner side of the side wall, the second abutting portion is substantially opposite to the front end of the first abutting portion, and the two connecting portions extend downward from both sides of the rear end of the upper wall and are respectively coupled with the two joint portions. The wire covering seat includes a head portion having a neck portion, the neck portion being assembled in the first and second recess portions, the neck portion having at least one bump, wherein the at least one bump is located at the at least one bump a first groove and the at least one second groove, the leading edge of the neck portion has a bearing surface having an outer diameter larger than the neck portion, the bearing surface abutting the first and second portions The Ministry is in opposition.

In an embodiment, the first recess has two spaced apart first recesses, the second recess has two spaced apart second recesses, and the second recesses and the first recesses A recess is substantially opposite, the neck portion has two bumps, and each of the bumps is located in one of the first recesses and one of the second recesses. The first recess has two upper ends respectively adjacent to the two joints, and the two first recesses are respectively disposed at the two upper ends, and the second recess has two lower ends corresponding to the two upper ends, and the second recesses respectively Located at the lower end of the two.

In an embodiment, the two connecting portions are between the second abutting portion and the side wall, and the bottom end of each connecting portion has a hook portion, and each connecting portion has a coupling hole, and the side wall of the upper cover and the end cover When the top is joined, the hook portions of the two connecting portions are respectively combined with the coupling holes of the two joint portions.

In an embodiment, the rear edge of the first recess has a first flange, and the rear edge of the second recess has a second flange substantially opposite the first flange of the end cap In contrast, the wire covering seat further includes a support portion on the rear side of the head segment, the outer diameter of the support portion being larger than the neck portion and being assembled in the first and second flanges. The second recess and the interior of the first recess form a substantially circular through hole, and the second flange and the interior of the first flange form a substantially elliptical hole.

In an embodiment, the rear end of the main body is provided with at least one control signal lamp, and the upper wall is provided with a lamp cover corresponding to the control signal lamp, so that the light of the control signal lamp can be displayed on the upper cover through the lamp cover. on.

An actuator according to an embodiment of the invention includes a body having a front end and a rear end longitudinally spaced apart from one of the bodies, a motor mounted inside the body, and an encoder disposed inside the rear end of the body a carriage disposed on the body and rotatably movable relative to the body along the longitudinal direction by the motor; and a wire fixing structure as described above.

Other objects, advantages and features of the invention are apparent from the description of the preferred embodiments illustrated herein.

The invention is capable of a variety of different structural embodiments. The preferred structural aspects of the present invention will now be described by way of example only, and not by way of limitation,

1 to 3 show an embodiment in which the wire fixing structure 10 constructed in accordance with the present invention is applied to the actuator 12. In this embodiment, the actuator 12 is an electric cylinder and includes a body 14 and a sliding seat 16 disposed on the body 14. The inside of the body 14 is provided with a motor 18 and a screw 20, and the screw 20 The outer end 22 is coupled to an output shaft fixing plate 24 which is coupled to the carriage 16. When the motor 18 is in operation, the screw 20 is driven to drive the fixing plate 24 and the sliding seat 16 relative to the body 14 along a longitudinal direction of the body 14 (in the direction indicated by the arrow AA in FIG. 3). Reciprocating. Since the motor 18, the screw 20 and the slider 16 are not technical features of the present invention, they will not be described in detail herein. Further, the present invention does not limit the actuator 12 to an electric cylinder, and does not limit the application range of the wire fixing structure 10.

The body 14 has a front end 26 and a rear end 28 spaced apart from the longitudinal direction. An encoder 30 is disposed inside the rear end 28 of the body 14 to sense the rotational position of the rotor of the motor 18 and feed back information to the control system. At least one control signal lamp 32 is disposed inside the rear end 28 of the body 14 to indicate the operating state of the mechanism. The wire securing structure 10 of the present invention is disposed at the rear end 28 of the body 14 for positioning a wire (e.g., a power cord or transmission line, not shown) of the actuator 12 on the body 14. The wire fixing structure 10 includes an end cover 34, an upper cover 36 and a wire covering seat 38. In this embodiment, the end cover 34 is mounted at the end of the rear end 28 of the body 14 and is located at the rear side of the encoder 30. The upper cover 36 is mounted on the upper portion of the rear end 28 of the body 14 and is located at the control signal. Above the lamp 32 (see Figure 2).

Referring to FIG. 4 to FIG. 9 , the end cover 34 includes a top portion 40 . The center of the top portion 40 has an arc-shaped first recess portion 42 . The two sides of the first recess portion 42 extend upwardly from a joint portion 44 . 44 has a coupling hole 46. The first recess 42 has two upper ends 48 respectively adjacent to the two joint portions 44, and each upper end 48 has a first recess 50. Furthermore, a first abutment 52 extends outwardly from the leading edge of the first recess 42 and a first flange 54 extends outwardly from the trailing edge of the first recess 42.

The upper cover 36 includes an upper wall 56 and side walls 58 extending downward from a rear end of the upper wall 56. In this embodiment, the upper wall 56 is provided with a two-light cover 60 corresponding to the control signal lamp 32, so that the mechanism state light reflected by the control signal lamp 32 can be displayed on the upper cover 36 through the lamp cover 60, so that The person can easily grasp the problem points that may occur when the actuator 12 is actuated and handle it in time. The side wall 58 is coupled to the top portion 40 of the end cap 34. In the present embodiment, the bottom end of the side wall 58 has an arcuate second recess 62, and the second recess 62 and the first recess 42 of the end cap 34. Opposite, and the interior of the two forms a generally circular perforation 64 (see Figure 6). The second recess 62 has two lower ends 66 corresponding to the upper ends 48 of the first recesses 42 . Each of the lower ends 66 has a second recess 68 , and the second recess 68 and the first recess of the first recess 42 . 50 is roughly relative (see Figure 6). Furthermore, a second flange 70 extends outwardly from the rear edge of the second recess 62 and is substantially opposite the first flange 54 of the end cap 34, and the interior of the two defines a substantially elliptical aperture. 72 (see Figure 4). A second abutting portion 74 extends downward from the rear end of the upper wall 56 and is located inside the side wall 58. In the embodiment, the second abutting portion 74 is separated from the side wall 58 by a specific distance and The front ends of the abutting portions 52 are substantially opposite (see Fig. 8). The two connecting portions 76 extend downward from both sides of the rear end of the upper wall 56 and are located between the second abutting portion 74 and the side wall 58. The bottom end of each connecting portion 76 has a hook portion 78. When the side wall 58 of the upper cover 36 is coupled with the top portion 40 of the end cover 34 (see FIG. 9), the hook portions 78 of the two connecting portions 76 are respectively engaged in the coupling holes 46 of the two joint portions 44 such that the upper cover 36 It is firmly coupled to the end cap 34.

The wire covering seat 38 includes a cylindrical tail section 80, a head section 84 having a necked portion 82, and a support portion 86 located between the tail section 80 and the head section 84. The outer diameter of the support portion 86 The neck portion 82 is larger than the neck portion 82 and is assembled in the hole 72 formed by the first and second flanges 54, 70. The neck portion 82 is assembled in the through hole 64 formed by the first and second recess portions 42, 62. The neck portion 82 has at least one bump 88. In the embodiment, the neck portion 82 has opposite two bumps 88, and the two bumps 88 are located in the first and second grooves. 50, 68 (see Figure 7). Furthermore, the leading edge of the neck portion 82 has a bearing surface 90 having an outer diameter larger than the neck portion 82, and the bearing surface 90 abuts the first and second abutting portions 52, 74 (see Figure 8). The tail end 80 is covered with a wire (not shown) and the trailing end 80 has an outlet port 92.

The wire fixing structure 10 of the present invention is assembled by first fixing the bottom 96 of the end cover 34 to the body 14 by means of a connector 94 such as a screw (see Fig. 1); the wire covering seat 38 is assembled thereon. The end cover 34 is disposed such that the support portion 86 of the wire covering seat 38 is located on the first flange 54. The neck portion 82 is located on the first recess portion 42 and the two bumps 88 of the neck portion 82 are located. Corresponding to the first recess 50; then, the upper cover 36 is assembled on the wire covering seat 38 such that the second flange 70 is located on the wire covering seat 38, and the second recess 62 is located at The neck portion 82 and the second recess 68 correspond to the two bumps 88, and the hook portions 78 of the upper cover 36 are respectively engaged in the coupling holes 46 of the end cover 34. When the upper cover 36 is firmly coupled to the end cover 34, the bearing surface 90 of the wire covering seat 38 abuts against the first and second abutting portions 52, 74 (see FIG. 8) to prevent the The wire covering seat 38 is detached from the body 14 due to the pulling of the external force. In addition, the bump 88 of the necking portion 82 is incorporated in the first and second grooves 50, 68 to limit the wire covering seat. 38 rotates relative to the body 14 to prevent the wire wrap 38 from loosening due to an external force.

The foregoing is a description of a particular embodiment of the invention, and various modifications and Therefore, obvious substitutions and modifications to those skilled in the art will still be incorporated in the scope of the claimed invention.

10‧‧‧Wire fixing structure

12‧‧‧Actuator

14‧‧‧Ontology

16‧‧‧Slide

18‧‧‧Motor

20‧‧‧ screw

22‧‧‧Outside

24‧‧‧ fixed board

26‧‧‧ front end

28‧‧‧ Backend

30‧‧‧Encoder

32‧‧‧Control signal light

34‧‧‧End cover

36‧‧‧Upper cover

38‧‧‧Wire Cover

40‧‧‧ top

42‧‧‧First recess

44‧‧‧Combination

46‧‧‧Combination hole

48‧‧‧Upper

50‧‧‧first groove

52‧‧‧First Abutment

54‧‧‧First flange

56‧‧‧上壁

58‧‧‧ side wall

60‧‧‧shade

62‧‧‧Second recess

64‧‧‧Perforation

66‧‧‧Bottom

68‧‧‧second groove

70‧‧‧second flange

72‧‧‧ Hole

74‧‧‧Second Abutment

76‧‧‧Connecting Department

78‧‧‧ hook

80‧‧‧End

82‧‧‧neck

84‧‧‧ head

86‧‧‧Support

88‧‧‧Bumps

90‧‧‧ bearing surface

92‧‧‧ outlet

94‧‧‧Connecting parts

96‧‧‧ bottom

Figure 1 shows a perspective view of an actuator of the present invention.

Figure 2 shows a schematic cross-sectional view of the actuator of Figure 1.

Figure 3 is a schematic illustration of the forward movement of the carriage of the actuator of Figure 1.

Figure 4 is a perspective view showing the wire fixing structure of the present invention.

Figure 5 shows an exploded view of the wire fixing structure of Figure 4.

Figure 6 is a schematic view showing the combination of the upper cover and the end cover of Figure 5.

Figure 7 is a cross-sectional view taken along line 7-7 of Figure 4.

Figure 8 is a cross-sectional view taken along line 8-8 of Figure 4.

Figure 9 shows another cross-sectional view of the wire fixing structure of Figure 4.

Claims (9)

A wire fixing structure for mounting on an actuator, the actuator having a body, the wire fixing structure comprising: an end cover mounted at one end of the body and including a top, the top having a first recess Each of the two sides of the first recess has a joint portion, the first recess has at least one first recess, the front edge of the first recess has a first abutting portion, and an upper cover includes an upper wall and a side wall extending downward from a rear end of the upper wall, the side wall being coupled to a top of the end cap, the bottom end of the side wall having a second recess opposite to the first recess of the end cap, the second The recess has at least one second recess, the second recess is substantially opposite to the first recess of the first recess, and a second abutment extends downward from the rear end of the upper wall and is located inside the sidewall. The second abutting portion is substantially opposite to the front end of the first abutting portion, the two connecting portions extend downward from both sides of the rear end of the upper wall and are respectively combined with the two joint portions; and a line covering seat, which comprises a head section having a neck portion, the neck portion is assembled The first and second recesses have at least one bump on the neck portion, and the at least one bump is located in the at least one first groove and the at least one second groove, the front of the neck portion The rim has a bearing surface having an outer diameter larger than the neck portion, and the bearing surface abuts the first and second abutting portions. The wire fixing structure according to claim 1, wherein the first recess has two spaced apart first grooves, and the second recess has two spaced apart second grooves, the second recesses The groove is substantially opposite to the first groove of the first recess, and the neck has two bumps, and each of the bumps is located in one of the first grooves and one of the second grooves. The wire fixing structure according to claim 2, wherein the first recess has two upper ends respectively adjacent to the two joints, and the two first grooves are respectively disposed at the upper ends, and the second recess has a The two lower ends corresponding to the two upper ends are respectively disposed at the lower ends of the two lower ends. The wire fixing structure according to claim 1, wherein the two connecting portions are between the second abutting portion and the side wall, and the bottom end of each connecting portion has a hook portion, and each joint portion has a coupling hole. When the side wall of the upper cover is combined with the top of the end cover, the hook portions of the two connecting portions are respectively engaged in the coupling holes of the two joint portions. The wire fixing structure of claim 1, wherein the rear edge of the first recess has a first flange, the rear edge of the second recess has a second flange, and the second flange The first flange of the end cap is substantially opposite, the wire covering seat further comprises a support portion on the rear side of the head segment, the outer diameter of the support portion is larger than the neck portion and assembled in the first and the first Inside the two flanges. The wire fixing structure according to claim 5, wherein the second recess and the interior of the first recess form a substantially circular through hole, and the second flange and the first flange form an interior A generally elliptical channel. The wire fixing structure according to claim 1, wherein at least one control signal lamp is disposed inside the rear end of the body, and the upper wall is provided with a lamp cover corresponding to the control signal lamp, so that the control signal lamp is Light can be displayed on the upper cover through the light cover. An actuator comprising: a body having a front end and a rear end longitudinally spaced apart from a body, a motor mounted inside the body, and an encoder disposed inside the rear end of the body; And a wire fixing structure according to any one of claims 1 to 7, wherein the body is mounted on the body and is reciprocally movable relative to the body by the motor. The actuator of claim 8, wherein the end cap is located on a rear side of the encoder.