Transmission mechanism, electric driving device and terminal crimping device

Abstract

The utility model discloses a transmission mechanism, an electric driving device and a terminal crimping device. The transmission mechanism comprises an outer sleeve used for being fixed to the moving block; and the eccentric wheel is rotatably mounted in the outer sleeve and can rotate relative to the outer sleeve. The eccentric wheel is provided with a mounting hole suitable for being mounted on a driving shaft, the central axis of the mounting hole is parallel to the central axis of the eccentric wheel, and a preset distance is reserved between the central axis of the mounting hole and the central axis of the eccentric wheel, so that the transmission mechanism can convert rotary motion of the driving shaft into linear reciprocating motion of the moving block. The electric driving device provided by the utility model not only can greatly improve the terminal crimping speed, but also has the advantages of small size and low cost.

Description

Technical Field

[0001] This utility model relates to a transmission mechanism, including an electric drive device for the transmission mechanism and a terminal crimping device including the electric drive device. Background Technology

[0002] In existing technologies, terminal crimping devices typically include a fixed block, a movable block movably mounted in a guide groove of the fixed block, a crimping block mounted on the bottom of the movable block, and a cylinder mounted on the fixed block. The piston rod of the cylinder is connected to the movable block and drives the movable block to move along the guide groove. The movable block drives the crimping block to move vertically to crimp the terminal onto a flexible flat cable or flexible circuit board. The crimping block is used to clamp and crimp the terminal, maintaining it in the correct crimping posture to ensure a good crimping result. However, the cylinder's slow response results in a slow crimping speed, severely limiting the efficiency of terminal crimping. Furthermore, the cylinder's electric drive mechanism also suffers from drawbacks such as large size and high cost. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a transmission mechanism is provided. The transmission mechanism includes: an outer sleeve for fixing to a movable block; and an eccentric wheel rotatably mounted in the outer sleeve and capable of rotating relative to the outer sleeve. The eccentric wheel has a mounting hole adapted for mounting onto a drive shaft, the central axis of the mounting hole being parallel to and distanced from the central axis of the eccentric wheel by a predetermined distance, such that the transmission mechanism can convert the rotational motion of the drive shaft into the linear reciprocating motion of the movable block.

[0005] According to an exemplary embodiment of the present invention, the transmission mechanism further includes: a plurality of rollers, which are rollingly disposed between the outer sleeve and the eccentric wheel and spaced apart in the circumferential direction of the outer sleeve. When the eccentric wheel rotates relative to the outer sleeve, the rollers make rolling contact with the eccentric wheel and the outer sleeve to reduce friction on the outer sleeve and the eccentric wheel.

[0006] According to another exemplary embodiment of the present invention, the transmission mechanism further includes: a cylindrical cage disposed between the outer sleeve and the eccentric wheel, and having a plurality of limiting holes formed on its peripheral wall. The plurality of rollers are respectively rotatably accommodated in the plurality of limiting holes of the cylindrical cage.

[0007] According to another exemplary embodiment of the present invention, the roller is a cylindrical rod and the limiting hole is a strip-shaped hole; or the roller is a spherical ball and the limiting hole is a circular hole.

[0008] According to another aspect of the present invention, an electric drive device is provided. The electric drive device includes: a servo motor having a drive shaft; and the aforementioned transmission mechanism, wherein the drive shaft is mounted in a mounting hole of an eccentric wheel in the transmission mechanism for driving the eccentric wheel to rotate.

[0009] According to an exemplary embodiment of the present invention, a raised key is formed on the outer peripheral surface of the drive shaft, and a strip groove is formed on the inner peripheral surface of the mounting hole of the eccentric wheel. The raised key engages with the strip groove to position the eccentric wheel in the circumferential direction.

[0010] According to another aspect of the present invention, a terminal crimping device is provided. The terminal crimping device includes: a fixed block having a vertically extending guide groove; a movable block movably mounted in the guide groove and capable of moving along the guide groove; a crimping block movably mounted to the bottom of the movable block and capable of moving relative to the movable block in the vertical direction; and the aforementioned electric drive device. A servo motor of the electric drive device is mounted to the fixed block, and an outer sleeve of the electric drive device is fixed to the movable block. The electric drive device is used to drive the movable block to reciprocate in the vertical direction, and the crimping block is adapted to move in the vertical direction under the drive of the movable block to crimp a terminal onto an electrical connector.

[0011] According to an exemplary embodiment of the present invention, the terminal crimping device further includes an elastic element that is compressed between the movable block and the crimping block.

[0012] According to another exemplary embodiment of the present invention, an mounting groove is formed on the movable block, and the outer sleeve is fixedly mounted in the mounting groove of the movable block.

[0013] According to another exemplary embodiment of the present invention, the terminal crimping device further includes: a mounting plate, which is fixed to a flange of the servo motor housing. The top of the mounting plate is connected to the top wall of the fixing block to mount the servo motor to the fixing block.

[0014] According to another exemplary embodiment of the present invention, the terminal crimping device further includes: an adjusting bolt, passing through the top wall of the fixing block and threadedly connected to the top of the mounting plate, to connect the mounting plate to the fixing block. The position of the mounting plate relative to the fixing block in the vertical direction can be adjusted by rotating the adjusting bolt, such that the initial position of the crimping block in the vertical direction can be adjusted by rotating the adjusting bolt.

[0015] According to another exemplary embodiment of the present invention, the electrical connector is a flexible flat cable, a flexible circuit board, or a round cable, and the terminal crimping device is used to crimp the terminal onto the flexible flat cable, the flexible circuit board, or the round cable.

[0016] In the foregoing exemplary embodiments of the present invention, the electric drive device, composed of a servo motor and an eccentric transmission mechanism, can significantly improve the terminal crimping speed. Compared with existing cylinder electric drive devices, the electric drive device of the present invention can increase the terminal crimping speed by several times, or even tens of times. Furthermore, the electric drive device of the present invention also has the advantages of small size and low cost.

[0017] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0018] Figure 1 A perspective view of a transmission mechanism according to an exemplary embodiment of the present invention is shown;

[0019] Figure 2 An exploded view of a transmission mechanism according to an exemplary embodiment of the present invention is shown;

[0020] Figure 3 This diagram shows a perspective view of a cylindrical cage and rollers of a transmission mechanism according to an exemplary embodiment of the present invention.

[0021] Figure 4 Showing a cross-sectional view of a transmission mechanism according to an exemplary embodiment of the present invention;

[0022] Figure 5 Showing an anatomical view of a transmission mechanism according to an exemplary embodiment of the present invention;

[0023] Figure 6 An exploded view of an electric drive device according to an exemplary embodiment of the present invention is shown;

[0024] Figure 7 This diagram shows an assembly schematic of an electric drive device according to an exemplary embodiment of the present invention.

[0025] Figure 8 This diagram shows an assembly schematic of a terminal crimping device according to an exemplary embodiment of the present invention, comprising a moving block, a crimping block, an elastic element, and a transmission mechanism.

[0026] Figure 9This diagram shows an exploded view of a terminal crimping device according to an exemplary embodiment of the present invention.

[0027] Figure 10 This diagram shows an assembly schematic of a terminal crimping device according to an exemplary embodiment of the present invention.

[0028] Figure 11 This shows a cross-sectional view of a terminal crimping device according to an exemplary embodiment of the present invention. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0030] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0031] According to a general technical concept of this utility model, a transmission mechanism is provided. The transmission mechanism includes: an outer sleeve for fixing to a movable block; and an eccentric wheel rotatably mounted in the outer sleeve and capable of rotating relative to the outer sleeve. The eccentric wheel has a mounting hole suitable for mounting onto a drive shaft, the central axis of the mounting hole being parallel to and at a predetermined distance from the central axis of the eccentric wheel, such that the transmission mechanism can convert the rotational motion of the drive shaft into the linear reciprocating motion of the movable block.

[0032] According to another overall technical concept of this utility model, an electric drive device is provided. The electric drive device includes: a servo motor having a drive shaft; and the aforementioned transmission mechanism, wherein the drive shaft is mounted in the mounting hole of the eccentric wheel of the transmission mechanism for driving the eccentric wheel to rotate.

[0033] According to another overall technical concept of this utility model, a terminal crimping device is provided. The terminal crimping device includes: a fixed block having a vertically extending guide groove; a movable block movably mounted in the guide groove and capable of moving along the guide groove; a crimping block movably mounted to the bottom of the movable block and capable of moving relative to the movable block in the vertical direction; and the aforementioned electric drive device. A servo motor of the electric drive device is mounted to the fixed block, and an outer sleeve of the electric drive device is fixed to the movable block. The electric drive device drives the movable block to reciprocate in the vertical direction, and the crimping block is adapted to move in the vertical direction under the drive of the movable block to crimp a terminal onto an electrical connector.

[0034] Figure 1 A perspective view of a transmission mechanism 1 according to an exemplary embodiment of the present invention is shown; Figure 2 An exploded view of a transmission mechanism 1 according to an exemplary embodiment of the present invention is shown; Figure 3 A perspective view of the cylindrical cage 13 and roller 14 of the transmission mechanism 1 according to an exemplary embodiment of the present invention is shown. Figure 4 Showing a cross-sectional view of a transmission mechanism 1 according to an exemplary embodiment of the present invention; Figure 5 Showing an anatomical view of a transmission mechanism 1 according to an exemplary embodiment of the present invention;

[0035] Figure 6 An exploded view of an electric drive device according to an exemplary embodiment of the present invention is shown; Figure 7 This diagram shows an assembly schematic of an electric drive device according to an exemplary embodiment of the present invention. Figure 8 This diagram shows an assembly schematic of the moving block 3, the crimping block 4, the elastic element 5, and the transmission mechanism 1 of a terminal crimping device according to an exemplary embodiment of the present invention. Figure 9 This diagram shows an exploded view of a terminal crimping device according to an exemplary embodiment of the present invention. Figure 10 This diagram shows an assembly schematic of a terminal crimping device according to an exemplary embodiment of the present invention. Figure 11 This shows a cross-sectional view of a terminal crimping device according to an exemplary embodiment of the present invention.

[0036] like Figures 1 to 10As shown, in an exemplary embodiment of this utility model, a transmission mechanism 1 is disclosed. The transmission mechanism 1 includes an outer sleeve 11 and an eccentric wheel 12. The outer sleeve 11 is fixed to a movable block 3. The eccentric wheel 12 is rotatably mounted in the outer sleeve 11 and is capable of rotating relative to the outer sleeve 11. The eccentric wheel 12 has a mounting hole 120 suitable for mounting onto a drive shaft 20. The central axis X1 of the mounting hole 120 is parallel to and a predetermined distance d from the central axis X2 of the eccentric wheel 12, enabling the transmission mechanism 1 to convert the rotational motion of the drive shaft 20 into the linear reciprocating motion of the movable block 3.

[0037] like Figures 1 to 10 As shown in the illustrated embodiment, the transmission mechanism 1 further includes a plurality of rollers 14, which are rotatably disposed between the outer sleeve 11 and the eccentric wheel 12 and are spaced apart in the circumferential direction of the outer sleeve 11. When the eccentric wheel 12 rotates relative to the outer sleeve 11, the rollers 14 roll into contact with the eccentric wheel 12 and the outer sleeve 11 to reduce friction on the outer sleeve 11 and the eccentric wheel 12.

[0038] like Figures 1 to 10 As shown in the illustrated embodiment, the transmission mechanism 1 further includes a cylindrical cage 13, which is disposed between the outer sleeve 11 and the eccentric wheel 12 and has a plurality of limiting holes 130 formed on its peripheral wall. A plurality of rollers 14 are respectively rotatably accommodated in the plurality of limiting holes 130 of the cylindrical cage 13.

[0039] like Figures 1 to 10 As shown in the illustrated embodiment, the roller 14 is a cylindrical rod, and the limiting hole 130 is a strip-shaped hole. However, the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the roller 14 can be a spherical ball, and the limiting hole 130 can be a circular hole.

[0040] like Figures 1 to 10 As shown, in another exemplary embodiment of this utility model, an electric drive device is also disclosed. The electric drive device includes a servo motor 2 and the aforementioned transmission mechanism 1. The servo motor 2 has a drive shaft 20. The drive shaft 20 is mounted in the mounting hole 120 of the eccentric wheel 12 of the transmission mechanism 1 for driving the eccentric wheel 12 to rotate.

[0041] like Figures 1 to 10 As shown in the illustrated embodiment, a raised key 21 is formed on the outer peripheral surface of the drive shaft 20, and a strip groove 121 is formed on the inner peripheral surface of the mounting hole 120 of the eccentric wheel 12. The raised key 21 engages with the strip groove 121 to position the eccentric wheel 12 in the circumferential direction.

[0042] like Figures 1 to 10As shown, in another exemplary embodiment of this utility model, a terminal crimping device is also disclosed. The terminal crimping device includes: a fixed block 6, a movable block 3, a crimping block 4, and the aforementioned electric drive device. The fixed block 6 has a vertically extending guide groove 60. The movable block 3 is movably mounted in the guide groove 60 and can move vertically along the guide groove 60. The crimping block 4 is movably mounted to the bottom of the movable block 3 and can move vertically relative to the movable block 3. A servo motor 2 of the electric drive device is mounted to the fixed block 6, and an outer sleeve 11 of the electric drive device is fixed to the movable block 3. The electric drive device is used to drive the movable block 3 to reciprocate vertically. The crimping block 4 is adapted to move vertically under the drive of the movable block 3 to crimp a terminal (not shown) onto an electrical connector (not shown).

[0043] like Figures 1 to 10 As shown in the illustrated embodiment, the terminal crimping device further includes an elastic element 5. This elastic element 5 is compressed between the moving block 3 and the crimping block 4. In the illustrated embodiment, the elastic element 5 may include a plurality of helical springs arranged side-by-side.

[0044] like Figures 1 to 10 As shown in the illustrated embodiment, a mounting groove 30 is formed on the movable block 3, and the outer sleeve 11 is fixedly mounted in the mounting groove 30 of the movable block 3.

[0045] like Figures 1 to 10 As shown in the illustrated embodiment, the terminal crimping device further includes a mounting plate 23, which is fixed to the flange 22 of the housing of the servo motor 2. The top of the mounting plate 23 is connected to the top wall 61 of the fixing block 6 to mount the servo motor 2 to the fixing block 6.

[0046] like Figures 1 to 10 As shown in the illustrated embodiment, the terminal crimping device further includes an adjusting bolt 7, which passes through the top wall 61 of the fixing block 6 and is threadedly connected to the top of the mounting plate 23 to connect the mounting plate 23 to the fixing block 6. The vertical position of the mounting plate 23 relative to the fixing block 6 can be adjusted by rotating the adjusting bolt 7, so that the initial vertical position of the crimping block 4 can be adjusted by rotating the adjusting bolt 7.

[0047] like Figures 1 to 10 As shown in the illustrated embodiment, the electrical connector can be a flexible flat cable, a flexible circuit board, or a round cable, and the terminal crimping device is used to crimp the terminals onto the flexible flat cable, flexible circuit board, or round cable.

[0048] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0049] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0050] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0051] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A transmission mechanism, characterised in that, Comprising: an outer sleeve (11) for being fixed to a moving block (3); and an eccentric wheel (12) rotatably installed in the outer sleeve (11) and capable of rotating relative to the outer sleeve (11), the eccentric wheel (12) having a mounting hole (120) adapted to be mounted to a driving shaft (20), a central axis of the mounting hole (120) being parallel to a central axis of the eccentric wheel (12) and being at a predetermined distance from the central axis of the eccentric wheel (12), so that the transmission mechanism (1) is capable of converting a rotational motion of the driving shaft (20) into a linear reciprocating motion of the moving block (3). Further comprising:

2. The transmission mechanism of claim 1, wherein a plurality of rollers (14) rollingly arranged between the outer sleeve (11) and the eccentric wheel (12) and being spaced apart in a circumferential direction of the outer sleeve (11), when the eccentric wheel (12) rotates relative to the outer sleeve (11), the rollers (14) are in rolling contact with the eccentric wheel (12) and the outer sleeve (11) to reduce friction on the outer sleeve (11) and the eccentric wheel (12). Further comprising:

3. The transmission mechanism of claim 2, wherein a cylindrical cage (13) arranged between the outer sleeve (11) and the eccentric wheel (12) and having a plurality of limiting holes (130) formed on a circumferential wall thereof, the plurality of rollers (14) are respectively rollingly accommodated in the plurality of limiting holes (130) of the cylindrical cage (13).

4. The transmission mechanism according to claim 3, wherein: the rollers (14) are cylindrical sticks and the limiting holes (130) are strip-shaped holes; or the rollers (14) are spherical balls and the limiting holes (130) are circular holes. Comprising:

5. An electric drive apparatus characterized by comprising: a servo motor (2) having a driving shaft (20); and the transmission mechanism (1) according to any one of claims 1-4, the driving shaft (20) is mounted into the mounting hole (120) of the eccentric wheel (12) of the transmission mechanism (1) for driving the eccentric wheel (12) to rotate.

6. The electric drive device according to claim 5, wherein: a protruding key (21) is formed on an outer circumferential surface of the driving shaft (20), a strip-shaped groove (121) is formed on an inner circumferential surface of the mounting hole (120) of the eccentric wheel (12), and the protruding key (21) is engaged with the strip-shaped groove (121) to position the eccentric wheel (12) in a circumferential direction. Comprising: a fixed block (6) formed with a guide slot (60) vertically extending in a vertical direction; 7. A terminal crimping device characterized by comprising: a moving block (3) movably installed in the guide slot (60) and capable of moving along the guide slot (60); a crimping block (4) movably installed to a bottom portion of the moving block (3) and capable of moving relative to the moving block (3) in the vertical direction; and the electric drive device according to claim 5 or 6, a servo motor (2) of the electric drive device is mounted to the fixed block (6), an outer sleeve (11) of the electric drive device is fixed to the moving block (3), and the electric drive device is used for driving the moving block (3) to reciprocate in the vertical direction, ​ ​ ​ The crimping block (4) is adapted to move in the vertical direction under the drive of the moving block (3) to crimp the terminal onto the electrical connector.

8. The terminal crimping device according to claim 7, characterized by Further comprising: An elastic member (5) compressed between the moving block (3) and the crimping block (4).

9. The terminal crimping device according to claim 7, wherein: An installation groove (30) is formed on the moving block (3), and the outer sleeve (11) is fixedly installed in the installation groove (30) of the moving block (3).

10. The terminal crimping device according to claim 9, characterized by Further comprising: An installation plate (23) fixed to a flange (22) of a housing of the servo motor (2), A top of the installation plate (23) is connected to a top wall (61) of the fixed block (6) to install the servo motor (2) to the fixed block (6).

11. The terminal crimping device according to claim 10, characterized by Further comprising: An adjusting bolt (7) passing through the top wall (61) of the fixed block (6) and threadedly connected to the top of the installation plate (23) to connect the installation plate (23) to the fixed block (6), A position of the installation plate (23) relative to the fixed block (6) in the vertical direction can be adjusted by rotating the adjusting bolt (7), so that an initial position of the crimping block (4) in the vertical direction can be adjusted by rotating the adjusting bolt (7).

12. The terminal crimping device according to claim 7, wherein: The electrical connector is a flexible flat cable, a flexible circuit board, or a round cable, and the terminal crimping device is used to crimp the terminal onto the flexible flat cable, the flexible circuit board, or the round cable.

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