A fixture and an assembly method for microswitch assembly

Abstract

The present invention discloses a jig for assembling a microswitch, which is used for assembling the microswitch. The microswitch includes a lever, a bracket and a tension spring. The jig for assembling the microswitch includes a base, a bracket fixing component, a lever fixing component and two tension spring clips for clamping the tension spring. The bracket fixing component is a side U-shaped structure, and the bracket fixing component is movably inserted in the base in the up and down direction. The lever is pushed and installed between the bracket fixing component and the base. The lever fixing component is fixed above the bracket fixing component, and the lever is pushed and installed in the lever fixing component. The two tension spring clips slide on the base in the left and right direction. When the tension spring is placed vertically, the two tension spring clips slide and close, and the tension spring is located between the two tension spring clips. Based on the above jig for assembling the microswitch, the present invention provides an assembling method for the microswitch. The jig for assembling the microswitch and the assembling method are combined to realize the automatic installation of the microswitch, improve the production efficiency and have higher accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of microswitches, and particularly to a fixture and an assembly method for assembling microswitches. Background Art

[0002] A microswitch is a contact mechanism with a small contact interval and a quick-acting mechanism, which performs a switching action with a specified stroke and a specified force, is covered with a housing, and has a drive rod on the outside. The contact spacing of its switch is relatively small, so it is named a microswitch. The existing assembly of microswitches is carried out manually, resulting in low production efficiency; the microswitches are relatively small in size, and the accuracy of manual assembly is not high.

[0003] Therefore, we have proposed a fixture and an assembly method for assembling microswitches. Summary of the Invention

[0004] The main object of the present invention is to provide a fixture and an assembly method for assembling microswitches, which have the advantages of high production efficiency and higher accuracy.

[0005] To achieve the above object, the present invention provides a fixture for assembling a microswitch, which is used for assembling a microswitch. The microswitch includes a lever, a bracket and a tension spring. The fixture includes a base, a bracket fixing component, a lever fixing component and two tension spring clips for clamping the tension spring. The bracket fixing component is a side U-shaped structure, and the bracket fixing component is movably inserted in the base in the vertical direction. The bracket is pushed and installed between the bracket fixing component and the base; the lever fixing component is fixed above the bracket fixing component, and the lever is pushed and installed in the lever fixing component; the two tension spring clips slide on the base in the left-right direction. When the tension spring is placed vertically, the two tension spring clips slide and close, and the tension spring is located between the two tension spring clips.

[0006] Preferably, the bracket fixing component includes a bracket lower plate, a bracket upper plate and a connecting rod. The bracket lower plate and the bracket upper plate are both horizontally arranged, and the connecting rod is connected between the bracket lower plate and the bracket upper plate in the vertical direction; the base is provided with a first through hole in the vertical direction, and the connecting rod is inserted into the first through hole. The bracket upper plate is located above the base, and the bracket lower plate is located below the base.

[0007] Preferably, the lever fixing assembly includes a lower lever plate and an upper lever plate. The upper lever plate is fixed to one end of the upper bracket plate. A slide rail is provided at the other end of the upper bracket plate in the left-right direction. The lower lever plate is vertically inserted into the upper bracket plate. The lower lever plate is located between the upper bracket plate and the slide rail. One end of the upper lever plate close to the slide rail extends out a first pressing plate, and the first pressing plate is located above the lower lever plate. One end of the lower lever plate close to the slide rail extends out a second pressing plate, and the second pressing plate is located above the slide rail.

[0008] Preferably, the upper bracket plate further includes a second through hole, and the lower lever plate is placed in the second through hole. The bracket fixing assembly further includes a first return spring. The first return spring is arranged vertically. The bottom of the first return spring is fixed to the lower bracket plate, and the top of the first return spring abuts against the bottom of the lower lever plate.

[0009] Preferably, the base extends upward to form a hook-shaped sliding seat, and two of the pull spring clips are slidably buckled on the hook-shaped sliding seat. There is a gap between the upper bracket plate and the sliding seat.

[0010] Preferably, the jig for assembling a micro switch further includes a first linear actuator and a push rod. The first linear actuator is arranged vertically. The push rod is located above the first linear actuator, and the push rod is connected to the output end of the first linear actuator. The base further has a third through hole, and the push rod is arranged vertically in the third through hole. The push rod is located below the intersection of the two pull spring clips.

[0011] Preferably, the jig for assembling a micro switch further includes a second return spring. The second return spring is arranged horizontally, and both ends of the second return spring are respectively connected to the two pull spring clips.

[0012] Preferably, a notch is provided on one side where the two pull spring clips are close to each other. When the two pull spring clips are closed, the two notches are combined into a fourth through hole, and the fourth through hole is located directly above the gap.

[0013] A method for assembling a micro switch, using the jig for assembling a micro switch as described above. The micro switch includes a lever, a bracket, a pull spring, a moving piece and a plastic part. The specific steps are as follows: (1) Push the lever into the lever fixing assembly; (2) Move the bracket fixing assembly upward, push the bracket between the upper bracket plate and the base, and then move the bracket fixing assembly downward; (3) Vertically arrange the pull spring and hook the bottom of the pull spring on the lever, and fix the pull spring between the two pull spring clips; (4) Install the moving piece, arrange the pull spring obliquely, and hook the top of the pull spring on the moving piece; (5) Push the assembled whole component into the plastic part.

[0014] Preferably, the step (3) specifically includes: a first linear driver drives the ejector rod to move upward, and the top of the ejector rod separates two spring clip holders in the left and right directions, and hooks the spring on the lever; the first linear driver drives the ejector rod to move downward, and the two spring clip holders reset and close to fix the spring in the fourth through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The fixture for assembling a micro switch of the present invention completes the assembly of the lever and the bracket through the lever fixing component and the bracket fixing component respectively, the spring clip completes the installation of the spring, and then the moving piece is installed on the assembled above components and the spring is hooked on the moving piece. Thus, the assembly of the micro switch on the fixture for assembling the micro switch can be realized, and the production efficiency can be improved through automatic installation with higher accuracy. Description of the Drawings

[0016] Figure 1 It is a perspective view of the fixture for assembling a micro switch according to an embodiment of the present invention.

[0017] Figure 2 It is an exploded view of the fixture for assembling a micro switch according to an embodiment of the present invention.

[0018] Figure 3 It is an exploded view of the micro switch according to an embodiment of the present invention. Detailed Description of the Invention

[0019] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] Figure 1 - Figure 2 It is a view of different perspectives of the fixture 100 for assembling a micro switch according to an embodiment of the present invention. In the figure, the X-axis represents the front-rear direction, the Y-axis represents the left-right direction, and the Z-axis represents the vertical direction; Figure 3 It is an exploded view of the micro switch 200. The following is combined with Figure 1 - Figure 3 The structure of the fixture 100 for assembling a micro switch according to an embodiment of the present invention will be described in detail:

[0021] Please refer to Figure 1, the jig 100 for assembling the micro switch in this embodiment is used to assemble the micro switch 200, and includes a base 10, a bracket fixing component 20, a lever fixing component 30, and two spring clips 40 for clamping the tension spring 203. The micro switch 200 includes a lever 201, a bracket 202, a tension spring 203, a movable piece 204, and a plastic part 205. The jig 100 for assembling the micro switch is mainly used for the assembly of the lever 201, the bracket 202, the tension spring 203, and the movable piece 204, and the assembled components after assembling the lever 201, the bracket 202, the tension spring 203, and the movable piece 204 are installed into the plastic part 205.

[0022] Please continue to refer to Figure 1 - Figure 2 , the bracket fixing component 20 in this embodiment is a side U-shaped structure, and the bracket fixing component 20 is movably inserted in the base 10 in the up and down direction, and the bracket 202 is pushed and installed between the bracket fixing component 20 and the base 10. Specifically, the bracket fixing component 20 includes a bracket lower plate 21, a bracket upper plate 22, and a connecting rod 23. The bracket lower plate 21 and the bracket upper plate 22 are both horizontally arranged, and the connecting rod 23 is vertically connected between the bracket lower plate 21 and the bracket upper plate 22; the base 10 is provided with a first through hole 11 in the vertical direction, and the connecting rod 23 is inserted into the first through hole 11. The bracket upper plate 22 is located above the base 10, and the bracket upper plate 22 is located below the base 10. Further, it also includes a second linear driver 70. The second linear driver 70 is vertically arranged below the bracket lower plate 21, and the bracket lower plate 21 is connected to the output end of the second linear driver 70.

[0023] Then, when the bracket 202 needs to be installed, the second linear driver 70 drives the bracket fixing component 20 to move upward. At this time, there is a gap between the bottom surface of the bracket upper plate 22 and the base 10, and the bracket 202 can be pushed into this gap from the side; after the bracket 202 is installed, the second linear driver 70 drives the bracket fixing component 20 to move downward, and the bracket 202 is fixed between the bracket upper plate 22 and the base 10, so as to realize the installation of the bracket 202.

[0024] Please continue to refer to Figure 1 - Figure 2, the lever fixing assembly 30 of this embodiment is fixed above the bracket fixing assembly 20, and the lever 201 is pushed into and installed in the lever fixing assembly 30. Specifically, the lever fixing assembly 30 includes a lower lever plate 31 and an upper lever plate 32. The lever 201 is pushed into and installed between the lower lever plate 31 and the upper bracket plate 22. The upper lever plate 32 is fixed to one end of the upper bracket plate 22. A slide rail 221 is provided at the other end of the upper bracket plate 22 in the left-right direction. The lower lever plate 31 is vertically inserted into the upper bracket plate 22. The lower lever plate 31 is located between the upper bracket plate 22 and the slide rail 221. One end of the upper lever plate 32 close to the slide rail 221 extends out a first pressing plate 321, and the first pressing plate 321 is located above the lower lever plate 31; one end of the lower lever plate 31 close to the slide rail 221 extends out a second pressing plate 311, and the second pressing plate 311 is located above the slide rail 221. Among them, a spring is provided between the lower lever plate 31 and the upper lever plate 32. After the lever 201 is pushed into the space between the lower lever plate 31 and the upper bracket plate 22, the lever 201 is pressed by the spring force inside the lower lever plate 31, so as to fix the lever 201. Further, the upper bracket plate 22 further includes a second through hole 222, and the lower lever plate 31 is placed in the second through hole 222; the bracket fixing assembly 20 further includes a first return spring (not shown in the figure). The first return spring is arranged in the vertical direction. The bottom of the first return spring is fixed to the lower bracket plate 21, and the top of the first return spring abuts against the bottom of the lower lever plate 31.

[0025] Then, the lever 201 is pushed in by the slide rail 221. The lever 201 is located between the second pressing plate 311 and the slide rail 221. Under the restoring elastic action of the first return spring, the lever 201 is fixed between the two; the first pressing plate 321 fixes the upper end of the lower lever plate 31.

[0026] Please continue to refer to Figure 1 - Figure 2 , the two tension spring clips 40 of this embodiment slide on the base 10 in the left-right direction. When the tension spring 203 is placed vertically, the two tension spring clips 40 slide and close together, and the tension spring 203 is located between the two tension spring clips 40. Further, the base 10 extends upward to form a hook-shaped slide base 12, and the two tension spring clips 40 are snap-fitted and slide on the hook-shaped slide base 12; there is a gap between the upper bracket plate 22 and the slide base 12. The bracket 202 is L-shaped, and the bracket 202 includes a horizontal plate 202a and a vertical plate 202b. Then, when the bracket 202 is pushed into the jig, the horizontal plate 202a is located between the upper bracket plate 22 and the slide rail 221, and the vertical plate 202b is located in the gap.

[0027] Please continue to refer to Figure 1 - Figure 2, the fixture 100 for microswitch assembly in this embodiment further includes a first linear driver 50 and a push rod 60. The first linear driver 50 is arranged in the vertical direction. The push rod 60 is located above the first linear driver 50 and is connected to the output end of the first linear driver 50. The base 10 is further provided with a third through hole 13. The push rod 60 is arranged in the third through hole 13 in the vertical direction and is located below the intersection of the two spring clips 40. Moreover, the fixture 100 for microswitch assembly further includes a second return spring (not shown in the figure). The second return spring is arranged in the horizontal direction, and both ends of the second return spring are respectively connected to the two spring clips 40.

[0028] Then, the first linear driver 50 drives the push rod 60 to move up and down. When the push rod 60 moves upward, the two spring clips 40 are separated to the left and right under the action of the push rod 60. When the push rod 60 moves downward, the two spring clips 40 are closed towards the middle under the action of the second return spring.

[0029] Furthermore, a notch 41 is provided on one side of the two spring clips 40 close to each other. When the two spring clips 40 are closed, the two notches 41 are combined into a fourth through hole 42, and the fourth through hole 42 is located directly above the interval.

[0030] Based on the above-mentioned fixture 100 for microswitch assembly, the present invention also provides a method for assembling a microswitch 200. The specific method steps are as follows:

[0031] Push the lever 201 into the lever fixing assembly 30. Specifically, the lever 201 is located on the conveyor belt. The lever 201 slides from the slide rail 221 into the fixture by the conveyor belt, and the lever 201 slides and abuts against the lower lever plate 31 and is fixed by the second pressing plate 311 on the lower lever plate 31.

[0032] (2) The fixed bracket 202 assembly moves upward, pushes the bracket 202 between the upper bracket plate 22 and the base 10, and the fixed bracket 202 assembly moves downward. Specifically, when the lever 201 is installed in the fixture, the second linear driver 70 drives the bracket fixing assembly 20 to move upward, thereby driving the upper bracket plate 22 to move upward. There is a gap for placing the lateral plate 202a of the bracket 202 between the upper bracket plate 22 and the base 10. Push the bracket 202 into the gap. When one side of the bracket 202 abuts against the connecting rod 23, the second linear driver 70 drives the bracket fixing assembly 20 to move downward, and the upper bracket plate 22 and the base 10 fix the bracket 202 from above and below.

[0033] (3) Vertically arrange the tension spring 203 and hook its bottom on the lever 201. The tension spring 203 is fixed between two tension spring clips 40. Specifically, the first linear driver 50 drives the ejector rod 60 to move upward. The top of the ejector rod 60 separates the two tension spring clips 40 in the left and right directions. The lever 201 is provided with a first hook hole 201a, and hook the bottom of the tension spring 203 into the first hook hole 201a on the lever 201. The first linear driver 50 drives the ejector rod 60 to move downward, and the two tension spring clips 40 reset and close to fix the tension spring 203 in the fourth through hole 42.

[0034] (4) Install the moving piece 204, arrange the tension spring 203 obliquely vertically, and hook the top of the tension spring 203 on the moving piece 204. Specifically, clamp one end of the moving piece 204 on the vertical plate 202b of the bracket 202. The moving piece 204 is provided with a second hook hole 204a. After hooking the tension spring 203 on the second hook hole 204a, then tilt it. The first linear driver 50 drives the two tension spring clips 40 to separate, tilt the tension spring 203 and hook the bottom of the tension spring 203 into the second hook hole 204a on the moving piece 204.

[0035] (5) Flip the assembled whole component and push it into the corresponding position in the plastic part 205, thereby completing the assembly process of the entire micro switch 200.

[0036] Compared with the prior art, the present invention has the following beneficial effects: The jig 100 for assembling the micro switch of the present invention completes the assembly of the lever 201 and the bracket 202 through the lever fixing component 30 and the bracket fixing component 20 respectively. The tension spring clip 40 completes the installation of the tension spring 203, and then installs the moving piece 204 on the above-mentioned assembled components and hooks the tension spring 203 on the moving piece 204. Thus, the assembly of the micro switch 200 on the jig for assembling the micro switch 200 can be realized, and the production efficiency can be improved through automatic installation, and the accuracy is higher.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A jig for assembling a microswitch, which is used to assemble a microswitch. The microswitch includes a lever, a bracket and a tension spring. It is characterized in that it includes a base, a bracket fixing component, a lever fixing component and two tension spring clips for clamping the tension spring. The bracket fixing component is a side U-shaped structure. The bracket fixing component is movably inserted in the base in the vertical direction. The bracket is pushed and installed between the bracket fixing component and the base. The lever fixing component is fixed above the bracket fixing component. The lever is pushed and installed in the lever fixing component. The two tension spring clips slide on the base in the left-right direction. When the tension spring is placed vertically, the two tension spring clips slide and close, and the tension spring is located between the two tension spring clips. The bracket fixing component includes a bracket lower plate, a bracket upper plate and a connecting rod. The bracket lower plate and the bracket upper plate are both horizontally arranged. The connecting rod is connected between the bracket lower plate and the bracket upper plate in the vertical direction. The base is provided with a first through hole in the vertical direction. The connecting rod is inserted into the first through hole. The bracket upper plate is located above the base, and the bracket lower plate is located below the base. The lever fixing component includes a lever lower plate and a lever upper plate. The lever upper plate is fixed at one end of the bracket upper plate. A slide rail is provided at the other end of the bracket upper plate in the left-right direction. The lever lower plate is inserted into the bracket upper plate in the vertical direction. The lever lower plate is located between the bracket upper plate and the slide rail. One end of the lever upper plate close to the slide rail extends out a first pressing plate, and the first pressing plate is located above the lever lower plate. One end of the lever lower plate close to the slide rail extends out a second pressing plate, and the second pressing plate is located above the slide rail.

2. The jig for assembling a microswitch according to claim 1, It is characterized in that the bracket upper plate further includes a second through hole, and the lever lower plate is placed in the second through hole. The bracket fixing component further includes a first return spring. The first return spring is arranged in the vertical direction. The bottom of the first return spring is fixed on the bracket lower plate, and the top of the first return spring abuts against the bottom of the lever lower plate.

3. The jig for assembling a microswitch according to claim 1, It is characterized in that the base extends upward a hook-shaped sliding seat, and the two tension spring clips are snap-fitted and slid on the hook-shaped sliding seat. There is a gap between the bracket upper plate and the sliding seat.

4. The jig for assembling a microswitch according to claim 1, It is characterized in that it further includes a first linear driver and a push rod. The first linear driver is arranged in the vertical direction. The push rod is located above the first linear driver. The push rod is connected to the output end of the first linear driver. The base is further provided with a third through hole. The push rod is arranged in the third through hole in the vertical direction. The push rod is located below the intersection of the two tension spring clips.

5. The jig for assembling a microswitch according to claim 1, It is characterized in that It further includes a second reset spring which is arranged horizontally, and two ends of the second reset spring are respectively connected to the two tension spring clips.

6. The jig for microswitch assembly according to claim 3, characterized in that a notch is provided on one side where the two tension spring clips are close to each other. When the two tension spring clips are closed, the two notches are combined into a fourth through hole which is located directly above the interval.

7. A method for assembling a microswitch, using the jig for microswitch assembly according to any one of claims 1 to 6, wherein the microswitch includes a lever, a bracket, a tension spring, a movable piece and a plastic part, characterized in that the specific steps are as follows: (1) Push the lever into the lever fixing assembly; (2) The bracket fixing assembly moves upward, push the bracket between the upper plate of the bracket and the base, and the bracket fixing assembly moves downward; (3) Arrange the tension spring vertically and hook the bottom on the lever, and fix the tension spring between the two tension spring clips; (4) Install the movable piece, arrange the tension spring obliquely, and hook the top of the tension spring on the movable piece; (5) Push the assembled whole part into the plastic part.

8. The method for assembling a microswitch according to claim 7, characterized in that the step (3) specifically includes: the first linear driver drives the ejector rod to move upward, the top of the ejector rod separates the two tension spring clips in the left and right directions, and hook the tension spring on the lever; the first linear driver drives the ejector rod to move downward, the two tension spring clips reset and close, and fix the tension spring in the fourth through hole.

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