KR102312655B1 - Lens assembling Apparatus for preventing misassembling of lens - Google Patents

Abstract

The present invention relates to a lens assembling apparatus having a function of preventing misassembly. When a torque repulsive force greater than a threshold value occurs, the gear is idle to prevent a lens from being tightened any more. So, the fatigue of an operator can be reduced. Therefore, it is possible to prevent the misassembly of the lens due to an increase in the fatigue of the operator.

Description

TECHNICAL FIELD [0002] Lens assembling Apparatus for preventing misassembling of lens

The present invention relates to a technique for assembling a lens to a body of a camera module, and more particularly, to a lens assembling device having an erroneous assembly prevention function.

In Republic of Korea Patent Registration No. 10-0888439 (March 5, 2009), a vacuum tube is connected to the upper end of the hollow body, and a nozzle to which a lens barrel is mounted is provided at the lower end, and is combined with the nozzle and rotates by operation of a push button Proposed a lens barrel assembly device in which the rotating body is built into the main body, so that the lens barrel mounted on the upper end of the housing is mounted on the nozzle by vacuum pressure and can be easily coupled to the upper portion of the housing by rotating the nozzle using a push button, have.

However, the technology of automatically assembling the lens to the body of the camera module as described above has the advantage of being user-friendly and reducing operator fatigue due to repetitive work, but the lens is not installed due to the mechanical deviation of the lens and the camera module body. It is not clear how much to rotate and tighten, so there is a big problem that the lens is likely to be incorrectly assembled.

Therefore, a manual lens assembly technique in which an operator assembles the lens to the body of the camera module using a manual assembly tool such as a torque wrench is generally widely used. When an operator manually assembles a lens using a manual assembly tool, if the operator's fatigue increases, the amount of torque applied to the lens decreases, resulting in a problem in that the lens is not fully assembled.

In addition, since the axis of rotation of the lens assembled to the body of the camera module is easily misaligned, a problem of erroneous assembly occurs frequently. On the other hand, during the camera manufacturing process, if the lens is transferred to the next process without being fully assembled, or if the rotation axis of the lens assembled to the body of the camera module is misaligned, it is determined as a lens assembly defect, resulting in defective loss.

Therefore, the present inventor generates a sound while the gear rotates idle so that the lens is no longer tightened when a torque repulsive force greater than a threshold value occurs so that the operator can recognize the time when the lens assembly is completed, thereby reducing the fatigue caused by repetitive work of the operator when assembling the lens manually A study was conducted on a lens assembly device that can solve the rising problem and prevent lens erroneous assembly.

Republic of Korea Patent No. 10-0888439 (2009.03.05)

An object of the present invention is to provide a lens assembling device having an erroneous assembly prevention function that can reduce operator fatigue by rotating gears so that the lens is no longer tightened when a torque repulsive force greater than a threshold is generated.

Another object of the present invention is to provide a lens assembling device having an erroneous assembly prevention function that generates a sound when a torque repulsive force greater than a threshold value is generated so that an operator can recognize when the lens assembly is completed.

According to one aspect of the present invention for achieving the above object, a lens assembly device having an erroneous assembly prevention function transmits a torque to the lens, so that the lens is assembled to the body of the camera module ( Collet) and; a first gear fixed to the collet and transmitting torque for lens assembly to the collet; a second gear that is engaged with the first gear to transmit torque to the first gear, but is separated from the first gear and rotates in vain when a torque repulsive force greater than a threshold value is generated in the collet; The second gear and one side are in close contact with each other, and a spring that provides a spring force to the second gear so that the second gear meshes with the first gear is included.

According to an additional aspect of the present invention, the first gear and the second gear are installed stacked in the direction of the rotation axis, and teeth are formed on each of the contact surfaces of the first gear and the second gear to mesh with each other.

According to a further aspect of the present invention, the second gear is mounted on the first gear.

According to an additional aspect of the present invention, when the second gear is separated from the first gear, a sound is generated by the teeth to indicate that the lens assembly is complete.

According to an additional aspect of the present invention, the lens assembling device having an erroneous assembly prevention function is coupled to the second gear, and further includes a rotation knob for transmitting torque generated by the user's rotational operation to the second gear.

According to a further aspect of the present invention, a rotary knob comprises a cylindrical body; Doedoe formed integrally with one end of the cylindrical body, a handle portion is formed on the outer periphery of a plurality of curved portions to prevent the user's hand from sliding during rotation by the user's hand; It includes a plurality of gear coupling grooves partially cut off from the other end of the cylindrical body to which the second gear is coupled and fixed.

According to an additional aspect of the present invention, the second gear is formed on the outer periphery and includes a plurality of engaging protrusions inserted into and coupled to the plurality of gear engaging grooves.

According to an additional aspect of the present invention, the lens assembling device having an erroneous assembly prevention function is coupled between the handle portion of the rotary handle and the spring, and further includes a spring cover for preventing the spring from being separated.

According to a further aspect of the present invention, the spring cover may have a double cylindrical structure through which the cylindrical body of the rotary handle passes.

According to an additional aspect of the present invention, a lens assembly device having an erroneous assembly prevention function is coupled with a spring cover, and prevents external exposure of internal parts including the first gear and the second gear and the spring to prevent external exposure of internal parts from the outside. It further includes a housing to protect them.

According to the present invention, when a torque repulsive force greater than a threshold value occurs, the gear is idle to prevent the lens from being tightened any more, and thus the fatigue of the operator can be reduced.

In addition, the present invention generates a sound when a torque repulsive force greater than a threshold value occurs so that the operator can recognize the lens assembly completion time, so that the operator, recognizing the lens assembly completion time, stops the work, thereby suppressing the increase in worker's fatigue. there is an effect

1 is a perspective view showing the configuration of an embodiment of a lens assembly apparatus having an erroneous assembly prevention function according to the present invention.
FIG. 2 is an exploded perspective view of the lens assembling device having an erroneous assembly prevention function shown in FIG. 1 .
FIG. 3 is a cross-sectional view of the lens assembling device having an erroneous assembly prevention function shown in FIG. 1 .
4 is a view illustrating assembling a lens to the body of a camera module using the lens assembly device having an erroneous assembly prevention function according to the present invention.
5 is a view illustrating a gear meshing state when the lens assembly is completed when the lens is no longer rotated by the lens assembly device having the erroneous assembly prevention function according to the present invention.

Hereinafter, the present invention will be described in detail so that those skilled in the art can easily understand and reproduce it through preferred embodiments described with reference to the accompanying drawings. While specific embodiments are illustrated in the drawings and the related detailed description is set forth, they are not intended to limit the various embodiments of the present invention to a specific form.

In describing the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the embodiments of the present invention, the detailed description thereof will be omitted.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be

On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

1 is a perspective view showing the configuration of an embodiment of a lens assembly device having an erroneous assembly prevention function according to the present invention, FIG. 2 is an exploded perspective view of the lens assembly device having an erroneous assembly prevention function shown in FIG. 1, FIG. 3 is a cross-sectional view of the lens assembling device having an erroneous assembly prevention function shown in FIG. 1 .

1 to 3 , the lens assembly apparatus 100 having an erroneous assembly prevention function according to this embodiment includes a collet 110 , a first gear 120 , and a second gear. 130 and a spring 140 .

The collet 110 transmits torque to the lens 200 so that the lens is assembled to the body of the camera module 300 . For example, the collet 110 may have a cylindrical shape in which the lens insertion groove 111 into which the holder 210 for fixing the lens is inserted and fixed from the side is opened from one side, but is not limited thereto.

On the other hand, the opposite sides of the outer edge of the cylindrical holder 210 are partially incised so that the collet 110 does not rotate in vain to form a flat opposed surface 211 with a portion of the outer edge, and the lens insertion groove 111 is as wide as the spacing between the opposite surfaces. It can be implemented in a cut-out form.

The first gear 120 is fixed to the collet 110 and transmits a torque for assembling the lens to the collet 110 . For example, the first gear 120 may include a disk-shaped gear body 121 and a cylindrical shaft 122 integrally formed with an upper portion of the disk-shaped gear body 121 . Meanwhile, a plurality of teeth 123 may be arranged in a pie shape on the upper surface of the disk-shaped gear body 121 .

The second gear 130 is engaged with the first gear 120 to transmit torque to the first gear 120 , but when a torque repulsive force greater than a threshold value is generated in the collet 110 , it is separated from the first gear 120 and is wasted. . For example, the second gear 130 may include a ring-shaped gear body 131 and a plurality of teeth 132 arranged in a pie shape on the lower surface of the ring-shaped gear body 131 .

Accordingly, the ring-shaped gear body 131 of the second gear 130 is inserted into the cylindrical shaft 122 of the first gear 120 and the first gear 120 and the second gear 130 are installed. They are stacked in the direction of the rotation axis. At this time, the first gear 120 and the second gear 130 are meshed with each other by the teeth 123 and 132 formed on the contact surfaces of the first gear 120 and the second gear 130, respectively.

The spring 140 is in close contact with the second gear 130 at one side, and provides a spring force to the second gear 130 so that the second gear 130 meshes with the first gear 120 . . The first gear and the second gear are stacked and installed in the direction of the rotation axis, and teeth are formed on each of the contact surfaces of the first gear and the second gear to be engaged. At this time, the spring force by the spring 140 is applied to the second gear 130 ), the second gear 130 is not separated from the first gear 120 unless a torque is applied to the second gear 130 .

However, when a torque is applied to the second gear 130 by a user's manipulation and the second gear 130 rotates, when a torque repulsive force less than a threshold value is generated in the collet 110, the spring 140 is formed by the spring. Torque is transmitted to the first gear 120 meshing with the second gear 130 in a state in which the second gear 130 is not separated from the first gear 120 by the force, and the first gear 120 rotates. do.

Then, torque is transmitted to the collet 110 fixed to the first gear 120 and the torque is transmitted to the lens 200 inserted into the lens insertion groove 111 of the collet 110 while the collet 110 rotates. , as the lens 200 rotates, it is assembled to the body of the camera module 300 .

On the other hand, when the lens is assembled to the body of the camera module 300 until the moment when the lens 200 is no longer rotated, a torque repulsive force of more than a threshold value is generated in the collet 110 thereafter, and the first gear engaged with the first gear 120 is generated. As the second gear 130 is lifted along the tooth surface, the first gear 120 is separated from the second gear 130 and is re-engaged by the spring force by the spring 140, while repeating this process. The second gear 130 is idle.

Accordingly, in the present invention, when a torque repulsive force greater than or equal to a threshold value occurs, the gear rotates in vain so that the lens is no longer tightened, thereby reducing the fatigue of the operator.

On the other hand, as the second gear 130 meshed with the first gear 120 is lifted along the tooth surface, the first gear 120 is separated from the second gear 130 and is subjected to the spring force by the spring 140 . In the process of being re-engaged by means of a friction force, a 'click' sound is generated.

That is, when the second gear 130 is separated from the first gear 120 , a sound is generated by the teeth to inform that the lens assembly is complete, and the operator recognizes that the lens assembly is complete.

Accordingly, the present invention generates a sound when a torque repulsive force greater than a threshold value occurs so that the operator can recognize the lens assembly completion time, so that the operator, recognizing the lens assembly completion time, stops the work, thereby increasing the worker's fatigue can be suppressed.

On the other hand, according to an additional aspect of the invention, the lens assembling device 100 having an erroneous assembly prevention function further includes a rotation knob (150). The rotary knob 150 is coupled to the second gear 130 , and transmits a torque generated by the user's rotational operation to the second gear 130 . For example, the rotary handle 150 may include a cylindrical body 151 , a handle portion 152 , and a plurality of gear coupling grooves 153 .

The inner diameter of the cylindrical body 151 is the same as the outer diameter of the second gear 130 , and the second gear 130 is inserted into the cylindrical body 151 . The handle portion 152 is integrally formed with one end of the cylindrical body 151, and a plurality of curved portions 152a are formed on the outer periphery to prevent the user's hand from slipping during rotation by gripping the user's hand.

The plurality of gear coupling grooves 153 are partially cut off from the other end of the cylindrical body 151, and the second gear 130 is coupled and fixed. In this case, the second gear 130 is formed on the outer periphery, and may include a plurality of coupling protrusions 133 inserted into and coupled to the plurality of gear coupling grooves 153 .

For example, the gear coupling groove 153 is cut in a vertical direction from the other end of the cylindrical body 151 and may include a vertical guide groove 153a for guiding the coupling protrusion 133 of the second gear 130 in the vertical direction. .

In addition, the gear coupling groove 153 is cut in the horizontal direction in the vertical guide groove 153a, and the coupling protrusion 133 of the second gear 130 is inserted and guided in the vertical direction through the vertical guide groove 153a. It may include a horizontal guide groove (153b) for guiding in the horizontal direction.

In addition, the gear coupling groove 153 is partially cut downward from the end of the horizontal guide groove 153b, and the coupling protrusion 133 of the second gear 130 guided in the horizontal direction through the horizontal guide groove 153b is inserted. It may include a fixed gear fixing groove (153c).

4 is a view illustrating assembling a lens to the body of a camera module using the lens assembly device having an erroneous assembly prevention function according to the present invention. In a state where the coupling protrusion 133 of the second gear 130 is inserted into the gear fixing groove 153c of the gear coupling groove 153 and fixed, the operator inserts the lens 200 into the lens insertion groove 111 of the collet 110. ) is inserted from the side and the end of the lens is inserted into the lens assembly portion of the body of the camera module 300 while holding the handle portion 152 of the rotary handle 150 by hand and turning it, torque is generated and the second gear 130 ) to transmit the torque.

When a torque is applied to the second gear 130 to rotate the second gear 130 , when a torque repulsive force less than a threshold value is generated in the collet 110 , the first gear is generated by the spring force by the spring 140 . Torque is transmitted from 120 to the first gear 120 meshing with the second gear 130 in a state in which the second gear 130 is not separated, and the first gear 120 rotates.

Then, torque is transmitted to the collet 110 fixed to the first gear 120 and the torque is transmitted to the lens 200 inserted into the lens insertion groove 111 of the collet 110 while the collet 110 rotates. , as the lens 200 rotates, it is assembled to the body of the camera module 300 .

5 is a view illustrating a gear meshing state when the lens assembly is completed when the lens is no longer rotated by the lens assembly device having the erroneous assembly prevention function according to the present invention.

When the lens is assembled to the body of the camera module 300 until the moment when the lens 200 is no longer rotated, a torque repulsive force greater than a threshold value is generated in the collet 110 thereafter, and the second gear meshed with the first gear 120 . As 130 is lifted along the tooth surface, the first gear 120 is separated from the second gear 130 and is engaged again by the spring force by the spring 140, and while repeating this process, the second The gear 130 is idle.

Accordingly, in the present invention, when a torque repulsive force greater than or equal to a threshold value occurs, the gear rotates in vain so that the lens is no longer tightened, thereby reducing the fatigue of the operator.

On the other hand, as the second gear 130 meshed with the first gear 120 is lifted along the tooth surface, the first gear 120 is separated from the second gear 130 and is subjected to the spring force by the spring 140 . In the process of being re-engaged by means of a friction force, a 'click' sound is generated.

That is, when the second gear 130 is separated from the first gear 120 , a sound is generated by the teeth to inform that the lens assembly is complete, and the operator recognizes that the lens assembly is complete.

Accordingly, the present invention generates a sound when a torque repulsive force greater than a threshold value occurs so that the operator can recognize the lens assembly completion time, so that the operator, recognizing the lens assembly completion time, stops the work, thereby increasing the worker's fatigue can be suppressed.

On the other hand, according to an additional aspect of the invention, the lens assembly apparatus 100 having a function to prevent erroneous assembly further includes a spring cover (160). The spring cover 160 is coupled between the handle portion 152 and the spring 140 of the rotary handle 150 to prevent the spring 140 from being separated.

For example, the spring cover 160 may have a double cylindrical structure through which the cylindrical body 151 of the rotary handle 150 passes. The inner cylinder 161 and the outer cylinder 162 of the spring cover 160 having a double cylindrical structure are connected by a plurality of intermediate connecting members 163 , and a vertical guide formed in the cylindrical body 151 of the rotary handle 150 . The intermediate connecting member 163 is inserted into the groove 153a to be implemented so that the cylindrical body 151 of the rotary handle 150 passes between the inner cylinder 161 and the outer cylinder 162 of the spring cover 160 while being guided. can

On the other hand, according to an additional aspect of the invention, the lens assembly apparatus 100 having an erroneous assembly prevention function may further include a housing (Housing) (170). The housing 170 is coupled to the spring cover 160 and prevents the internal parts including the first gear 120 and the second gear 130 and the spring 140 from being exposed to the outside to protect the internal parts from the outside. .

For example, a screw coupling groove 171 is formed on the inner periphery of the housing 170 , and a screw thread 164 is formed on the outer periphery of the spring cover 160 , so that the housing 170 is coupled to the spring cover 160 in a screwed manner. can be implemented. Accordingly, since the internal parts are covered by the housing 170, the internal parts are protected from the outside.

As described above, in the present invention, when a torque repulsive force greater than a threshold value occurs, the gear is idle so that the lens is no longer tightened, thereby reducing the fatigue of the operator. .

In addition, the present invention generates a sound when a torque repulsive force greater than a threshold value occurs so that the operator can recognize the lens assembly completion time, so that the operator, recognizing the lens assembly completion time, stops the work, thereby suppressing the increase in worker's fatigue. have.

The various embodiments disclosed in the present specification and drawings are merely presented as specific examples to aid understanding, and are not intended to limit the scope of various embodiments of the present invention.

Accordingly, the scope of various embodiments of the present invention, in addition to the embodiments described herein, all changes or modifications derived based on the technical idea of various embodiments of the present invention are included in the scope of various embodiments of the present invention. should be interpreted as being

The present invention can be industrially used in the field of camera lens assembly technology and its application technology.

100: lens assembly device
110: collet
111: lens insertion groove
120: first gear
121: gear body
122: cylindrical shaft
123: tooth
130: second gear
131: gear body
132: tooth
133: bonding protrusion
140: spring
150: rotary knob
151: cylindrical body
152: handle part
152a: bend
153: gear coupling groove
153a: vertical guide groove
153b: horizontal guide groove
153c: gear fixing groove
160: spring cover
161: inner cylinder
162: outer cylinder
163: intermediate connecting member
164: thread
170: housing
171: screw coupling groove
200: lens
210: cylindrical holder
211: opposite side
300: camera module

Claims (10)

a collet that transmits torque to the lens so that the lens is assembled to the body of the camera module;
a first gear fixed to the collet and transmitting torque for lens assembly to the collet;
a second gear that is engaged with the first gear to transmit torque to the first gear, but is separated from the first gear and rotates in vain when a torque repulsive force greater than a threshold value is generated in the collet;
a spring in close contact with the second gear and providing a spring force to the second gear so that the second gear meshes with the first gear;
A lens assembly device having an erroneous assembly prevention function including. The method of claim 1,
1st and 2nd gears:
A lens assembling device having a function of preventing erroneous assembly in which cogs are formed on each of the contact surfaces of the first gear and the second gear, which are stacked in the direction of the rotation axis and are engaged. 3. The method of claim 2,
2nd gear:
A lens assembling device having a function of preventing erroneous assembly from being accumulating on the first gear. 3. The method of claim 2,
2nd gear:
A lens assembly device having an erroneous assembly prevention function to inform that the lens assembly is complete by generating a sound by the teeth when the vehicle is separated from the first gear. 5. The method according to any one of claims 1 to 4,
A lens assembly device with an erroneous assembly prevention function includes:
a rotation knob coupled to the second gear to transmit torque generated by the user's rotational manipulation to the second gear;
Lens assembling device having an erroneous assembly prevention function further comprising. 6. The method of claim 5,
Swivel knob:
a cylindrical body;
Doedoe formed integrally with one end of the cylindrical body, a handle portion on the outer periphery of which a plurality of curved portions are formed to prevent the user's hand from sliding during rotation by the user;
A plurality of gear coupling grooves partially cut from the other end of the cylindrical body to which the second gear is coupled and fixed;
A lens assembly device having an erroneous assembly prevention function including. 7. The method of claim 6,
2nd gear:
Doedoe formed on the outer periphery, a plurality of engaging projections are inserted into the plurality of gear engaging grooves;
A lens assembly device having an erroneous assembly prevention function including. 7. The method of claim 6,
A lens assembly device with an erroneous assembly prevention function includes:
A spring cover coupled between the handle portion and the spring of the rotating handle to prevent spring separation;
Lens assembling device having an erroneous assembly prevention function further comprising. 9. The method of claim 8,
Spring cover:
A lens assembly device with a function of preventing erroneous assembly, which is a double-cylindrical structure through which the cylindrical body of the rotating handle passes. 9. The method of claim 8,
A lens assembly device with an erroneous assembly prevention function includes:
a housing coupled to the spring cover to prevent external exposure of internal parts including the first gear and the second gear and the spring to protect internal parts from the outside;
Lens assembling device having an erroneous assembly prevention function further comprising.

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