CN212598492U

CN212598492U - Thread take-up mechanism

Info

Publication number: CN212598492U
Application number: CN202020527763.2U
Authority: CN
Inventors: 刘明清; 钟辉; 黄世生; 詹义勇; 王宏; 何洋
Original assignee: Shenzhen Hymson Laser Intelligent Equipment Co Ltd
Current assignee: Hymson Laser Technology Group Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-02-26
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a thread take-up mechanism (200) for the silk thread assembly of camera lens suspension ware, wherein, the camera lens suspension ware includes shell fragment and silk thread, this silk thread is fixed to on the shell fragment, thread take-up mechanism (200) have base (210), be provided with first guide part (220) on base (210), first guide part (220) are followed the straight line direction and are led, be provided with on first guide part (220) and take-up portion (230), take-up portion (230) set up to be driven for the direction that can follow first guide part (220), in order to press the silk thread to bend when the installation on the shell fragment is predetermine the position at the silk thread. The utility model discloses a take-up mechanism (200) can improve the take-up precision.

Description

Thread take-up mechanism

Technical Field

The utility model relates to an automatic technical field of mill especially relates to take-up mechanism.

Background

With the development of various electronic products such as digital cameras, computers, tablet computers, smart phones and the like, higher and higher requirements are also put forward on the camera shooting function of the electronic products. Lens suspensions (OIS assemblies) that are often used in camera lenses for high-quality images are also used in these electronic products.

The lens suspension generally includes a base, a lens carrier, a coil, a spring, a wire, and the like. Wherein the thread is fixed on the elastic sheet. Due to the small overall size of the lens suspension of the camera system, its assembly is very difficult, especially for fine wires. For example, when the wires are fixed to the elastic sheet, the fine wires may be broken due to thermal expansion and contraction, thereby causing the entire lens suspension to fail.

In view of the above, there has been developed a thread take-up mechanism, but the known thread take-up mechanism can bend the thread to ensure a certain stretch margin after the thread is fixed to the elastic piece, but has a technical problem of low thread take-up accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a raise the thread take-up precision of taking-up the mechanism to a certain extent at least, provided a thread take-up mechanism.

The thread take-up mechanism is used for assembling the thread of the lens suspension device, wherein the lens suspension device comprises an elastic sheet and the thread, the thread is fixed on the elastic sheet, the thread take-up mechanism is provided with a base, a first guide part is arranged on the base and guides along the linear direction, a thread take-up part is arranged on the first guide part and can be driven along the guide direction of the first guide part, and the thread take-up part bends the thread when the thread is pulled to a preset installation position on the elastic sheet.

In some embodiments, the thread take-up portion includes a first connection block mounted to the first guide portion and a thread take-up piece mounted to the first connection block.

In some embodiments, the wire bending device further comprises a link portion mounted to the base, one end of the link portion may abut the wire take-up portion, and the other end of the link portion may be driven to cause the wire take-up portion to be driven and to bend the wire.

In some embodiments, the base further comprises a second guide part mounted to the base, the second guide part is parallel to the first guide part, the second guide part has a driving rotation block mounted thereon, and the other end of the link part may abut against the driving rotation block.

In some embodiments, further comprising a first limiting portion mounted to the base and limiting a stroke of the thread take-up portion driven toward the thread.

In some embodiments, the first restriction has a differentiation head that regulates and restricts the stroke by which the thread take-up is driven towards the thread.

In some embodiments, a second limiting portion is further included that is mounted to the base and limits the travel of the wire take-up portion that is driven in a direction away from the wire.

In some embodiments, the wire picking device further comprises a reset part, one end of the reset part is connected with the base, the other end of the reset part is connected with the wire picking part, and the reset part drives the wire picking part to abut against the second limiting part.

In some embodiments, the reset portion includes a compression spring having one end abutting the base and the other end abutting the thread take-up portion, and/or a tension spring having one end connected to the base and the other end connected to the thread take-up portion.

In some embodiments, further comprising a third limiting member mounted to the base, the first connecting block being provided with a third groove portion fitted with the third limiting member, the third limiting member being inserted into the third groove portion to limit a stroke in which the first connecting block is driven.

The utility model discloses a take-up mechanism because take-up portion installs the first guide part along the direction of straight line, consequently, take-up portion can sharply bend the silk thread, can improve the precision.

Drawings

FIG. 1 is a perspective view of an embodiment of a thread take-up mechanism of the present invention;

fig. 2 is a partially enlarged view at a in fig. 1;

FIG. 3 is a partial cross-sectional view of the thread take-up mechanism of FIG. 1;

FIG. 4 is a perspective view of another embodiment of the thread take-up mechanism of the present invention;

FIG. 5 is a partial cross-sectional view of the thread take-up mechanism of FIG. 4;

FIG. 6 is a simplified schematic diagram of an embodiment of a lens suspension, showing the lens suspension viewed from a top view;

fig. 7 is a simplified schematic diagram of one embodiment of a lens suspension illustrating the relative positions of the engagement of the wires and springs of the lens suspension.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the present invention can be implemented in many different ways, and is not limited to the embodiments described herein, but rather, these embodiments are provided to enable those skilled in the art to understand the disclosure more thoroughly.

In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" on another feature, it can be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, connected, or mounted on the other feature. In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

In addition, for the same or similar technical features in different embodiments, the same symbols are given and the description is not repeated unless otherwise necessary.

Fig. 6 is a simplified schematic diagram of an embodiment of the lens suspension 100, showing the lens suspension 100 as viewed from above, and fig. 7 is a simplified schematic diagram of the lens suspension 100, showing a close-up view of the relative positions of the engagement of the wires 101 and the resilient pieces 102 of the lens suspension 100. For ease of understanding, first, with reference to fig. 6 and 7, a basic process of threading the yarn 101 will be described. In the lens suspension 100, a Shape Memory alloy (Shape Memory Alloys) wire 101, referred to as a wire 101 for short, and a spring plate 102 are included, the plurality of wires 101 form a Shape surrounding the peripheral edge of the spring plate 102 and are respectively fixed to the spring plate 102, specifically, the outer side (peripheral edge) of the spring plate 102 is provided with a plurality of bending edges (also referred to as clamping jaws) 102a, and two bending edges 102a on the same side fix one wire 101. Herein, the same side means: one side of the same side of the spring plate 102. If the spring 102 is quadrilateral, it has four sides, and similarly, if the spring 102 is hexagonal or octagonal, it has six sides or eight sides. The two bent edges 102a located on the same side are respectively located at two ends of one side of the elastic sheet 102 and respectively attached to the elastic sheet main body 102b to press the wire 101. The number of sides of the spring 102 is the same as the number of wires 101, for example, when the spring 102 is a quadrilateral, there are four wires 101. In addition, although the lens suspension 100 described herein has two bending sides 102a on the same side to which one wire 101 is fixed, the invention is not limited thereto, and one wire 101 may be sandwiched by one bending side 102a or one wire 101 may be sandwiched by two or more bending sides 102a depending on the process, which is not listed here. Before press fitting, the angle between the bending edge 102a and the elastic sheet main body 102b can be a preset angle, such as 30-60 degrees, before the silk thread 101 is press fitted, the silk thread is pulled to the installation preset position of the elastic sheet main body 102a, namely, between the bending edge 102a and the elastic sheet main body 102b, then the bending edge 102a is pressed to the elastic sheet main body 102b and is attached to the elastic sheet main body 102b, so that the silk thread 101 is pressed onto the elastic sheet 102, and the online work of the silk thread 101 is completed.

The utility model discloses a thread take-up mechanism 200 is used for when silk thread 101 is pulled the installation on shell fragment 102 and predetermines the position, bends (takes up) silk thread 101 with higher precision to ensure that silk thread 101 still has certain flexible surplus after being fixed to shell fragment 102, thereby prevent that silk thread 101 from falling owing to breaking such as expend with heat and contract with cold.

Fig. 1 is a perspective view of a thread take-up mechanism 100a, fig. 2 is a partial enlarged view at a in fig. 1, fig. 3 is a partial sectional view of the thread take-up mechanism 100a, fig. 1 to 3 with additional reference to fig. 6 and 7, and in some embodiments, the thread take-up mechanism 200a (200) may be mounted to a thread take-up machine (not shown) of a lens suspension 100 for assembly of a thread 101 of the lens suspension 100, wherein the lens suspension 100 includes a spring plate 102 and a thread 101, and the thread 101 is fixed to the spring plate 102. In some embodiments, the thread take-up mechanism 200 has a base 210, a first guide part 220 is provided on the base 210, the first guide part 220 is guided in a linear direction (up-down direction shown), a thread take-up part 230 is provided on the first guide part 220, and the thread take-up part 230 is configured to be driven in the guide direction of the first guide part 220 to bend the thread 101 when the thread 101 is pulled to a mounting preset position on the spring 102.

In the present embodiment, since the thread take-up portion 230 is attached to the first guide portion 220 that is guided in the linear direction, the thread take-up portion 230 can be fed linearly and perpendicularly to the thread 101 during the process of crimping the thread 101, and the thread 101 is prevented from slipping at the thread take-up portion 230, and a stroke of feeding the thread take-up portion 230 from the time of crimping the thread 101 to the stop can be ensured, which is a stroke of crimping the thread 101, and therefore, the precision of crimping (thread take-up) the thread 101 can be improved, and the length of the thread 101 clamped by the crimped edges can be calculated by calculating the formula of the hypotenuse from the position where the thread take-up portion 230 contacts the thread 101 and the stroke of crimping the thread 101 based on the position where the thread 101 is fixed at the crimped edge 102a, and from the formula of the hypotenuse of the right triangle.

It is contemplated that the first guide 220 may be an automated component, such as a linear slide, known to those skilled in the art, mounted directly to the base 210, and the thread take-up 230 is mounted directly to the first guide 220. The first guide portion 220 may be a guide mechanism such as a dovetail groove, a trapezoidal groove, or a guide hole directly provided on the base 210, and the thread take-up portion 230 may be configured to fit the dovetail groove, the trapezoidal groove, or the guide hole, and for example, a guide hole may be provided on the base 210, a first connecting block of the thread take-up portion 230 may be provided in a shaft shape (described later), and a third stopper (described later) for stopping the first connecting block 231 may be provided on the base 210 so as to slide in the guide hole and prevent the rotation of the thread take-up portion 230.

It is contemplated that the wire take-up portion 230 may be driven linearly in any direction against the wire 101 and crimp the wire 101. For example, when the wire 101 is pulled between the bent side 102a and the main body 102b of the spring 102 in the horizontal direction (direction parallel to the ground), the wire-lifting portion 230 is provided above or below the wire 101 in the up-down direction (e.g., direction perpendicular to the ground) and is driven in the up-down direction, in which case the first guide portion 220 is provided to be guided in the up-down direction.

It is conceivable that the thread take-up 230 can be driven by any known actuator and bends the thread 101 in the case of a thread machine with installation space on the thread. The wire take-up portion 230 may be directly connected to a driving means 300 such as an air cylinder or a motor, and driven by the air cylinder or the motor, for example, in the case that the threading machine has a sufficient installation space, as a direct driving manner. As an indirect driving method, for example, in the case where the installation space of the thread winding machine is compact, the thread take-up part 230 may be driven by the driving device 300 (for example, a press-fitting cylinder for press-fitting the thread 101) through a relay device (for example, a link part or the like).

In some embodiments, in order to facilitate the installation of the thread take-up part 230 and improve the accuracy of the thread take-up, the thread take-up part 230 includes a first connection block 231 and a thread take-up piece 232, the first connection block 231 is installed to the first guide part 220, and the thread take-up piece 232 is installed to the first connection block 231. Specifically, the first connection block 231 may have a rectangular parallelepiped block shape, and the first connection block 231 is provided with a mounting hole for connecting with the first guide portion 220, for example, a linear slide rail. The thread take-up tab 232 is mounted to an upper portion of the first connection block 231, and the thickness of the thread take-up tab 232 is, for example, 0.1mm to 0.5mm, so as to ensure that the thread 101 is not interfered with other elements of the lens suspension 100, such as the elastic piece 102, when the thread take-up tab 232 bends (takes up) the thread. When the thread take-up mechanism 200 is disposed on the thread winding machine, the thread take-up piece 232 is disposed below the thread 101, i.e., between the thread 101 and the main body of the elastic piece 102, to prevent the interference between the thread take-up piece 232 and a thread take-up mechanism (not shown) of the thread winding machine. In this case, when the thread take-up part 230 is driven from bottom to top in the up-down direction, the thread take-up piece 232 approaches the thread 101 and can crimp the thread 101, and when the thread take-up part 230 is driven from top to bottom in the up-down direction, the thread take-up piece 232 moves away from the thread 101.

Although the example of the first connecting block 231 and the thread take-up piece 232 is described here, the present invention is not limited to this, and the thread take-up portion may be formed of only one sheet metal member, or the first connecting block 231 and the thread take-up piece 232 may be integrally formed.

In some embodiments, a link portion 240 is further included, the link portion 240 is mounted to the base 210, one end 241 of the link portion 240 can abut the wire-lifting portion 230, and the other end 242 of the link portion 240 can be driven to cause the wire-lifting portion 230 to be driven and to crimp the wire 101. For example, the link part 240 has a link member 243, one end 245 of the link member 243 may abut the wire-lifting part 230, for example, the first connecting block 231, and the other end 246 of the link member 243 may be driven by the driving device 300. The link member 243 is provided with a hinge hole 244, and correspondingly, the base 210 is provided with a hinge shaft 212, and the link member 243 is mounted to the base 210 by the hinge of the hinge hole 244 and the hinge shaft 212, and is driven by the driving device 300, so that the base 210 can swing up and down. When the end 245 of the link member 243 abutting against the first connecting block 231 is driven to swing upward, the first connecting block 231 is pushed to slide upward and the thread take-up piece 232 is driven to move upward. This allows the driving device 300 to be disposed above the base 210, and allows the thread take-up unit 230 to move from bottom to top in the vertical direction. Further, since the driving device 300 can be provided above the base 210, the driving device 300 of another component of the thread threading machine, for example, the driving device 300 of the press-fitting portion can be used as the driving device 300 of the thread take-up mechanism 200.

In some embodiments, in order to more easily drive the one end 241 of the link part 240, a second guide part 250 is further included, the second guide part 250 is mounted to the base 210, the second guide part 250 is parallel to the first guide part 220, a driving rotation block 251 is mounted on the second guide part 250, and the other end 242 of the link part 240 may abut against the driving rotation block 251. The second guide portion 250 may be provided like the first guide portion 220, for example, using a linear slide rail or a dovetail groove, or a guide hole, etc. directly provided on the base 210, and specifically, for example, the first guide portion 220 is provided on one side of the base 210, the second guide portion 250 is provided on the other side of the base 210, and the link portion 240 is provided between the first guide portion 220 and the second guide portion 250 and above the first guide portion 220 and the second guide portion 250. The upper part of the first connecting block 231 is provided with a first groove part 234, and one end 241 of the connecting rod part 240 extends into the first groove part 234 and is abutted against the upper side of the first groove part 234; the upper portion of the driving rotation block 251 is provided with a second groove portion 252, the other end 242 of the link portion 240 protrudes into the second groove portion 252 and abuts against the upper side of the second groove portion 252, and the driving device 300 is driven downward from above the driving rotation block 251, thereby swinging the end 246 of the link member 243 connected to the driving rotation block 251 downward and swinging the other end 245 of the link member 243 connected to the driving first connection block 231 upward.

In some embodiments, to further improve the accuracy with which the wire gathering portion 230 crimps (picks) the wire 101, a first limiting portion 260 is also included, the first limiting portion 260 being mounted to the base 210 and limiting the stroke by which the wire gathering portion 230 is driven toward the wire 101. Specifically, for example, when the thread take-up portion 230 is driven in the up-down direction, the first limiting portion 260 is provided to limit the stroke of the upward sliding of the thread take-up portion 230. Thus, the first restricting portion 260 serves as a mechanical stopper, and can ensure the stability of the upward sliding stroke of the yarn take-up portion 230, thereby improving the accuracy with which the yarn 101 is crimped by the yarn take-up portion 230.

In some embodiments, to precisely adjust the limit position of the first limit 260, the first limit 260 has a differentiating head 261 that adjusts and limits the stroke of the wire-lifting portion 230 driven toward the wire 101. The differentiating head 261 may be an adjusting tool capable of finely adjusting a stroke, which is well known to those skilled in the art, and when the thread take-up 230 is driven upward, the first connecting block 231 abuts against the differentiating head 261 to be restricted by the differentiating head 261. By providing the differentiating head 261, the stroke of the wire-lifting portion 230 being driven upward can be very precisely adjusted, thereby precisely adjusting the length of the wire 101 being bent.

In some embodiments, in order to limit the return stroke of the wire-lifting portion 230, preventing the wire-lifting portion 230 from hitting the spring 102, a second limiting portion 270 is further included, the second limiting portion 270 being mounted to the base 210 and limiting the stroke of the wire-lifting portion 230 being driven in a direction away from the wire 101. Specifically, for example, when the thread take-up portion 230 is driven in the up-down direction, the second limiting portion 270 is provided to limit the stroke of the downward sliding of the thread take-up portion 230. Thus, the second limiting portion 270 serves as a mechanical limit, and can ensure the stability of the downward sliding stroke of the wire collecting portion 230, thereby preventing the wire collecting portion 230 from colliding with the spring plate 102.

It is conceivable that components such as a restricting block, a restricting pin, a restricting bolt, a hydraulic shock absorber, etc., which are well known to those skilled in the art, may be used regardless of the first and second restricting

portions

260 and 270 as long as they have a sufficient installation space.

In some embodiments, in order to achieve free reset when the wire picking portion 230 is not driven, a reset portion 280 is further included, one end of the reset portion 280 is connected with the base 210, the other end is connected with the wire picking portion 230, and the wire picking portion 230 is driven to abut against the second limiting portion 270. Specifically, for example, the reset portion 280 may include a compression spring 281, one end of the compression spring 281 abutting the base 210 and the other end abutting the wire take-up portion 230. In addition, a compression spring 281 may be disposed between the first restriction part 260 and the first connection block 231. Thus, when the thread take-up portion 230 is driven upward, the compression spring 281 is compressed, and when the thread take-up portion 230 is not driven, the thread take-up portion 230 is driven downward by the expansion of the compression spring 281, thereby being reset. The reset unit 280 may further include a tension spring 282, one end of the tension spring 282 being connected to the base 210, and the other end thereof being connected to the wire-drawing portion 230. When the thread take-up portion 230 is not driven, the tension spring 282 is in a stretched state, the thread take-up portion 230 is pulled and abuts against the second regulating portion 270, and when the thread take-up portion 230 is driven upward, the tension spring 282 is further stretched, and when the thread take-up portion 230 is not driven, the thread take-up portion 230 is driven downward by contraction of the tension spring 282, and thereby reset.

FIG. 4 is a perspective view of the thread take-up mechanism 200 b; fig. 5 is a partial sectional view of the thread take-up mechanism 200b, and referring to fig. 4 and 5, in some embodiments, in order to simplify a limiting structure of the thread take-up part 230, a third limiting member 211 is further included, the third limiting member 211 is mounted to the base 210, the first connecting block 231 is provided with a third groove 233, the third groove 233 is fitted with the third limiting member 211, and the third limiting member 211 is inserted into the third groove 233 to limit a stroke of the first connecting block 231 to be driven. This can limit the stroke of the linear guide 230 in the vertical direction, and the structure is compact. Specifically, the base 210 is provided with a guide hole as the first guide portion 220, the first connection block 231 of the string-drawing portion 230 may be provided in a shaft shape adapted to the guide hole of the first guide portion 220, the third groove 233 penetrates the first connection block 231 and extends in the axial direction of the first connection block 231, the third restriction member 211 is in a shaft shape, the third restriction member 211 penetrates the third groove 233, and both ends of the third restriction member 211 are bridged on the base 210, whereby the third restriction member 211 can restrict the stroke of the string-drawing portion 230 sliding up and down, and can prevent the string-drawing portion 230 from rotating in the guide hole, and the structure is compact and easy to implement.

The various features described in the foregoing detailed description may be combined in any manner and, for the sake of unnecessary repetition, the invention is not limited in its scope to the particular combinations illustrated.

The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the scope of the present invention should be construed as being included in the technical solutions of the present invention.

Claims

1. The thread take-up mechanism is used for assembling the thread of the lens suspension device, wherein the lens suspension device comprises an elastic sheet and the thread, and the thread is fixed on the elastic sheet.

2. The thread take-up mechanism according to claim 1, wherein the thread take-up portion includes a first link block mounted to the first guide portion and a thread take-up piece mounted to the first link block.

3. The thread take-up mechanism according to claim 1 or 2, further comprising a link portion mounted to the base, one end of the link portion being abuttable to the thread take-up portion and the other end of the link portion being drivable to cause the thread take-up portion to be driven and to crimp the thread.

4. The thread take-up mechanism according to claim 3, further comprising a second guide portion mounted to the base, the second guide portion being parallel to the first guide portion, a driving rotation block being mounted on the second guide portion, and the other end of the link portion being capable of abutting against the driving rotation block.

5. The thread take-up mechanism according to claim 1 or 4, further comprising a first restriction part mounted to the base and restricting a stroke of the thread take-up part to be driven toward the thread.

6. The thread take-up mechanism according to claim 5, wherein the first limiting portion has a differentiating head that regulates and limits a stroke of the thread take-up portion to be driven toward the thread.

7. The thread take-up mechanism according to claim 1 or 2, further comprising a second limiting portion that is mounted to the base and limits a stroke of the thread take-up portion to be driven in a direction away from the thread.

8. The thread take-up mechanism according to claim 7, further comprising a reset portion, one end of which is connected to the base and the other end of which is connected to the thread take-up portion and drives the thread take-up portion to abut against the second limiting portion.

9. The thread take-up mechanism according to claim 8, wherein the reset portion comprises a compression spring having one end abutting the base and the other end abutting the thread take-up portion, and/or a tension spring having one end connected to the base and the other end connected to the thread take-up portion.

10. The thread take-up mechanism according to claim 2, further comprising a third restriction member mounted to the base, the first connection block being provided with a third groove portion fitted with the third restriction member, the third restriction member being inserted into the third groove portion to restrict a stroke in which the first connection block is driven.