Five-way switch assembly equipment

Abstract

The present application relates to the field of five-way switch production equipment, and specifically discloses a five-way switch assembly device, which includes a base transmission mechanism, a dust cleaning mechanism, and a reed installation mechanism. The base transmission mechanism includes a transmission base and a base transmission assembly. The dust cleaning mechanism and the reed installation mechanism are disposed on the transmission base and arranged along the transmission direction of the base material strip on the transmission base. The dust cleaning mechanism includes a dust blowing assembly and a dust suction assembly. The dust blowing assembly and the dust suction assembly are arranged along the transmission direction of the base material strip. The dust blowing assembly includes an air pipe and an air nozzle disposed at the end of the air pipe, and the air nozzle can be aligned with any base. The dust suction assembly includes a dust suction cover, a dust suction block, and a dust suction drive source. The end of the dust suction block is configured to be inserted into a groove in the base, and the end of the dust suction block configured to be inserted into the groove in the base is penetrated by a dust suction hole. The present application has the effect of improving the yield rate of five-way switches.

Description

Technical Field

[0001] The present application relates to the field of five-way switch production equipment, and in particular to a five-way switch assembly equipment. Background Art

[0002] A five-way switch, also known as a multi-pole, multi-position switch, is different from ordinary switches that can only control a single on / off state. Instead, it can control multiple circuit states through different operating methods, such as rotation and toggle.

[0003] In related technologies, such as Figure 1 、 Figure 2 The five-way switch shown includes a base 9, a reed 91, a handle 92, a plum blossom seat 93, and an end cap 94. Before assembly, the base 9 and the reed 91 are both in the form of strips. Transfer holes are provided on the base 9 strip and the reed 91 strip to facilitate the transfer of the base 9 strip and the reed 91 strip. During assembly, the reed 91 is first installed into the base 9, and then the handle 92 and the plum blossom seat 93 are installed into the base 9 in sequence. Finally, the end cap 94 is put onto the handle 92 and the buckle on the end cap 94 is engaged with the corresponding slot on the base 9. By swinging and pressing the handle 92, different areas on the reed 91 are deformed and pressed down, and come into contact with different terminals on the base 9, realizing circuit control switching.

[0004] The contact between the reed 91 and the terminal on the base 9 is the key to circuit conduction. The base 9 is provided with a groove to accommodate the reed 91 and the handle 92. During the assembly process, dust is easily accumulated in the groove of the base 9, affecting the circuit conduction and ultimately affecting the control sensitivity of the five-way switch, resulting in defective products. This needs to be improved. Summary of the Invention

[0005] In order to improve the yield rate of five-way switches, the present application provides a five-way switch assembly device.

[0006] The five-way switch assembly device provided in this application adopts the following technical solution:

[0007] A five-way switch assembly device includes a base transmission mechanism for transmitting a base material strip, a dust cleaning mechanism, and a reed installation mechanism for installing a reed on the base. The base transmission mechanism includes a transmission base for sliding the base material strip and a base transmission assembly for driving the base material strip to move. The dust cleaning mechanism and the reed installation mechanism are disposed on the transmission base and are arranged along the transmission direction of the base material strip on the transmission base.

[0008] The soot cleaning mechanism includes a soot blowing assembly and a soot suction assembly, which are arranged along the transmission direction of the base material belt. The soot blowing assembly includes an air pipe and an air nozzle arranged at the end of the air pipe, and the air nozzle can be aligned with any base;

[0009] The ash suction assembly includes an ash suction cover plate covering the transmission seat, an ash suction block penetrating and slidingly arranged on the ash suction cover plate, and an ash suction driving source driving the ash suction block to move. The end of the ash suction block is used to be inserted into the groove of the base, and an ash suction hole is penetrated on the end of the ash suction block for inserting into the groove of the base.

[0010] By adopting the above technical solution, when transferring the base material strip, the base material strip is first placed on the transfer base, and then transferred by the base transfer assembly. Before the base on the base material strip is transferred to the reed mounting mechanism, it is first transferred to the air nozzle. By connecting an air outlet device to the air pipe, the air nozzle can emit air, thereby blowing out dust in the base groove.

[0011] The ash-blowing base is then transported to a relatively closed space enclosed by the ash-collecting cover and the transport base. The ash-collecting drive source drives the ash-collecting block to move, inserting its end into the groove of the base. An exhaust device is then connected to the ash-collecting hole of the ash-collecting block, and dust in the base groove is extracted through the ash-collecting hole. After the ash-blowing and ash-collecting process, the base is transported to the reed installation mechanism, where the reed is installed into the base groove.

[0012] Such a setting can effectively remove dust and ensure the contact reliability between the reed and the terminal on the base, thereby ensuring the control sensitivity of the five-way switch and improving the yield rate of the five-way switch.

[0013] Optionally, the dust cleaning mechanism further includes a transparent cover plate covered on the transmission seat, and the transparent cover plate is arranged between the dust collecting cover plate and the spring installation mechanism.

[0014] By adopting the above technical solution, the transparent cover plate installed on the transmission seat not only plays a protective role, effectively preventing dust from entering the base after cleaning, but also the staff can observe the situation inside the base through the transparent cover plate, so as to observe the dust removal effect and adjust the cleaning mechanism in time.

[0015] Optionally, the reed mounting mechanism includes a reed transmission assembly for transmitting the reed and a reed blanking assembly for punching the reed, the reed transmission assembly can drive the reed to move to the upper side of the corresponding base, and the reed blanking assembly includes a reed punch and a reed drive source for driving the reed punch to move in a vertical direction.

[0016] By adopting the above technical solution, when installing the reed, the reed material strip is first transferred by the reed transfer assembly and then transferred to the top of the corresponding base by the reed transfer assembly. Then, the reed punch is driven downward by the reed drive source and the reed punch is used to punch the reed into the base.

[0017] Optionally, the spring transmission assembly includes a transmission platform, a limit seat, a transmission needle, a slider, a reset elastic member, an ejection block and an ejection elastic member. The transmission platform is used for the spring strip to slide, and a connecting groove is provided on the upper surface of the transmission platform. The transmission platform is provided with a mounting cavity connected to the connecting groove. The transmission needle is slidably arranged in the connecting groove along the transmission direction of the spring strip, and the transmission needle extends into the mounting cavity. The transmission needle passes through the slider in the vertical direction, and a limiting block is provided on the transmission needle. The limiting seat is penetrated with a makeshift channel in the vertical direction, and the makeshift channel is used for the transmission needle to extend and slide. The limiting block is arranged along the horizontal direction The minimum cross-sectional width in the direction is greater than the width of the give way channel in the horizontal direction, the limit block can be moved to be staggered with the limit seat in the vertical direction, the reset elastic member is connected to the slider and is used to drive the slider to reset along the transmission direction back to the spring strip, the ejection block and the limit seat are arranged along the transmission direction of the spring strip, the ejection block is slidably arranged in the mounting cavity along the vertical direction, the ejection elastic member is used to reset the ejection block upward, when the ejection elastic member is in the natural state, the upper surface of the ejection block is not lower than the upper surface of the limit seat, and the upper end of the ejection block is provided with a downward pressing inclined surface facing the limit seat, and the downward pressing inclined surface is used to interfere with the limit block.

[0018] By adopting the above technical solution, when transferring reeds, the reed strip is first placed on the transfer platform, and the end of the transfer pin is inserted into one of the transfer holes in the reed strip. Then, force is applied to the slider, causing it to move along the arrangement of the reeds and the reed strip. The slider drives the transfer pin, thereby moving the reed strip. After the transfer pin moves to a point where the limit block and the limit seat are vertically offset, the limit block and the transfer pin fall downward under the action of gravity, causing the limit block to fall below the limit seat. After the force applied to the slider is removed, the slider, under the action of the return spring, moves back in the direction away from the reed strip. The slider, through the transfer pin, drives the limit block, which presses against the downward pressure slope and causes the ejection block to move downward until the limit block moves above the ejection block. At this point, under the action of the ejection spring, the ejection block moves upward and resets, pushing the limit block and the transfer pin upward to be inserted into the next transfer hole in the reed strip. This process is repeated to realize the transmission of the reed strip.

[0019] Optionally, the spring blanking assembly further includes a spring punch seat and a spring elastic member, the spring punch being connected to the spring punch seat, the spring elastic member being used to reset the spring punch seat upward, the spring mounting mechanism including a linkage assembly, the linkage assembly including a linkage seat, a linkage head, a linkage wheel and a linkage block, the spring driving source being used to drive the linkage seat to move in a vertical direction, the linkage head and the linkage block being both arranged on the linkage seat, the linkage wheel being rotatably arranged on the slider, the linkage block and the linkage wheel being arranged along the transmission direction of the spring material strip, the lower end of the linkage block being provided with a linkage inclined surface for contacting with the linkage wheel, the surface of the linkage block being located on the upper side of the linkage inclined surface and connected with the linkage inclined surface is a linkage straight surface, the linkage straight surface extends in the vertical direction, and the linkage head is located on the upper side of the linkage seat;

[0020] When the spring elastic member is in a natural state and the linkage head contacts the spring punch seat, the linkage wheel contacts the linkage straight surface, and the limit block and the limit seat are staggered in the vertical direction;

[0021] When the linkage block is separated from the linkage wheel, the limit block is located on the upper side of the ejection block, and the limit block and the limit seat are staggered in the vertical direction.

[0022] By adopting the above technical solution, when punching the reeds from the reed stock strip, the reed drive source drives the linkage seat downward, which in turn drives the linkage block downward. The linkage inclined surface presses against the linkage wheel to drive the slider to move. The slider drives the reed stock strip to move via the transmission needle until the linkage block moves downward to the linkage straight surface and contacts the linkage wheel. At this point, the limit block and the limit seat are vertically offset, and the limit block and the transmission needle fall, completing a single transfer of the reed stock strip. The reed drive source drives the linkage seat further downward, and the linkage head presses against the reed punch seat and drives the reed punch downward via the reed punch seat, thereby punching the reeds from the reed stock strip into the groove of the base.

[0023] After the reed is punched, the linkage seat is reset upward by the reed drive source. Under the action of the reed elastic member, the reed punch seat and the reed punch are reset upward. The linkage block moves upward to the linkage wheel, first from the linkage straight surface to the linkage inclined surface. During this process, the slider is reset in the transmission direction away from the reed strip under the action of the reset elastic member. The limit block presses against the downward pressing inclined surface and moves the ejection block downward until the linkage block moves away from the linkage wheel. At this time, the limit block moves to the upper side of the ejection block. Under the action of the ejection elastic member, the ejection block pushes the limit block and the transmission pin upward and reset, and the limit block moves to the upper side of the limit seat.

[0024] This reciprocating process achieves the transmission of the reed strip and the punching of the reeds. That is, through a single driving source, the reed strip can be first transmitted and then the reeds can be punched. This not only reduces the driving source, but also eliminates the need for a large number of sensors and corresponding control program settings, simplifying the control logic of the assembly device of the present application.

[0025] Optionally, a downward elastic member is provided on the transmission needle, and the downward elastic member is used to apply a downward force to the transmission needle.

[0026] By adopting the above technical solution, compared with relying solely on gravity to allow the transmission needle and the limit block to fall when the limit block and the limit seat are offset, by moving the elastic member downward to apply force to the transmission needle, it is effectively ensured that the transmission needle and the limit block can fall stably until the limit block is located on the lower side of the limit seat, thereby improving the reliability of the operation of the reed transmission assembly.

[0027] Optionally, the machine further comprises a film sticking mechanism, the film sticking mechanism comprising a film placing wheel, a film collecting wheel and a film punching assembly, the film punching assembly being arranged on the transmission seat and between the film placing wheel and the film collecting wheel;

[0028] The film punching assembly includes a film punching head and a film punching driving source for driving the film punching head to move. The end of the film punching head is used to be inserted into the groove of the base.

[0029] By adopting the above technical solution, a sticky dust-proof film or a sticky dust-proof silicone composite film is installed on the film-releasing wheel, the film is rolled up by the film-rewinding wheel, and the film is passed between the film punching head and the base. The die head is then driven to move by the film punching drive source to punch off a part of the film, and the film of this part enters the groove of the base, and the film of this part is adhered to the reed and the base. The dust-proof film can effectively play a role in dust prevention, so as to extend the use handle of the five-way switch of the present application and ensure the sensitivity during use. The dust-proof silicone composite film can not only prevent dust, but also play a role in silencing.

[0030] Optionally, a combined mounting mechanism is also included, which includes a plum blossom seat transmission assembly, a handle transmission assembly and a combined mounting assembly. The combined mounting assembly includes a lower seat, an upper seat, a lifting drive source for driving the lower seat to move in a vertical direction, a combined grabbing piece for grabbing the handle and the plum blossom seat, and a combined drive source for driving the combined grabbing piece to move. The plum blossom seat transmission assembly is used to transfer the plum blossom seat to the upper side seat, and the handle transmission assembly is used to transfer the handle to the lower seat. The upper seat is penetrated by a makeshift hole in the vertical direction for the handle and the lower seat to pass through.

[0031] By adopting the above technical solution, when installing the plum blossom seat and the handle, the plum blossom seat is first transferred to the upper seat and the handle is transferred to the lower seat. The lower seat is then driven upward by the lifting drive source, so that the handle is inserted into the plum blossom seat through the clearance hole and combined with the plum blossom seat. At the same time, the combined drive source drives the combined grabbing member to move, and the plum blossom seat and the handle are grabbed by the combined grabbing member. The combined drive source then drives the combined grabbing member to move so that the end of the handle and the plum blossom seat are placed in the groove of the base. Finally, the force applied by the combined grabbing member to the plum blossom seat and the handle is removed, and the combined grabbing member is reset by the combined drive source.

[0032] The plum blossom seat and the handle are pre-assembled first and then installed as a whole, which can reduce the structural settings that play a role in grabbing and installing, and simplify the structure of the assembly equipment of this application.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. Before installing the reed into the base, the soot blowing assembly and the soot suction assembly are used to blow soot from the groove of the base and then suction the soot. The cleaned base is then transferred to the reed installation mechanism in a relatively closed space to install the reed. This effectively ensures the contact reliability between the reed and the terminal on the base, ensures the control sensitivity of the five-way switch, and improves the yield rate of the five-way switch.

[0035] 2. Through the linkage assembly, the reed transmission assembly and the reed blanking assembly can be operated in sequence, that is, the reed transmission assembly first transmits the reed strip, and the reed blanking mechanism blanks the reed strip after the transmission is completed. In this way, only the reed drive source is required to achieve this, with a reliable structure and stable transmission and blanking.

[0036] 3. A film-sticking mechanism is added to stick a film on the reed. Different films can be used to give different additional functions to the five-way switch, such as dustproof, silent and other functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural diagram of a five-way switch in the background technology.

[0038] Figure 2 It is an exploded schematic diagram of a five-way switch in the background art.

[0039] Figure 3 It is a structural diagram of an embodiment of the present application.

[0040] Figure 4 It is a schematic diagram of the local structure of the base transmission mechanism in the embodiment of the present application.

[0041] Figure 5 It is a partial structural diagram highlighting the dust cleaning mechanism and the spring installation mechanism in the embodiment of the present application.

[0042] Figure 6 A cross-sectional view of the reed transmission assembly is highlighted in an embodiment of the present application.

[0043] Figure 7 The embodiment of the present application highlights the partial structural diagram of the film-applying mechanism.

[0044] Figure 8 The embodiment of the present application highlights a schematic diagram of the local structure of the rotating component.

[0045] Figure 9 yes Figure 3 Enlarged schematic diagram of point A in the middle.

[0046] Figure 10 A partial cross-sectional view highlighting the lower seat and the jacking drive source in the embodiment of the present application.

[0047] Description of reference numerals:

[0048] 1. Frame; 2. Base transmission mechanism; 21. Transmission seat; 211. Transmission slot; 212. Yield slot; 22. Base transmission assembly; 221. Horizontal transmission cylinder; 222. Vertical transmission cylinder; 223. Transmission slide; 224. Transmission rod; 3. Ash cleaning mechanism; 31. Ash blowing assembly; 311. Air pipe; 312. Air nozzle; 32. Ash suction assembly; 321. Ash suction cover; 322. Ash suction seat; 323. Ash suction block; 324. Ash suction drive source; 33. Transparent cover; 4. Reed mounting mechanism; 41. Reed transmission assembly; 411. Transmission platform; 4111. Guide slide; 4112. Connecting slot ; 4113, mounting cavity; 4114, telescopic slot; 412, slider; 413, reset elastic member; 414, limit seat; 4141, make way channel; 415, transmission needle; 416, ejector block; 4161, downward pressing slope; 417, ejector elastic member; 418, limit block; 419, downward elastic member; 42, reed blanking assembly; 421, reed pressure plate; 422, reed seat; 423, reed punch seat; 424, reed elastic member; 425, reed punch; 426, reed drive source; 43, linkage assembly; 431, linkage seat; 432, linkage head; 433, linkage wheel; 434, linkage Moving block; 4341, linkage inclined surface; 4342, linkage straight surface; 5, film-sticking mechanism; 51, film-sticking seat; 52, film-laying wheel; 53, film-collecting wheel; 54, rotating assembly; 541, rotating motor; 542, synchronous wheel; 543, synchronous belt; 55, film-punching assembly; 551, film-punching pressing block; 552, film-punching seat; 553, film-punching head; 554, film-punching spring; 555, film-punching driving source; 556, film-threading channel; 56, active roller; 57, transmission roller; 6, combined mounting mechanism; 61, plum blossom seat transmission assembly; 611, plum blossom seat vibration plate; 612, plum blossom seat guide rail; 62, handle transmission assembly; 621. Handle vibration plate; 622. Handle guide rail; 63. Combined mounting assembly; 631. Upper seat; 632. Lower seat; 633. Lifting drive source; 634. Clearance hole; 64. Combined grabbing piece; 65. Combined drive source; 7. End cover mounting mechanism; 71. End cover seat; 72. End cover transmission assembly; 721. End cover vibration plate; 722. End cover guide rail; 73. End cover grabbing piece; 74. End cover drive source; 8. Blanking mechanism; 81. Blanking seat; 82. Cutter seat; 83. Blanking cutter; 84. Blanking cylinder; 9. Base; 91. Reed; 92. Handle; 93. Plum blossom seat; 94. End cover. DETAILED DESCRIPTION

[0049] The following is combined with Figure 3-10 This application is described in further detail.

[0050] The embodiment of the present application discloses a five-way switch assembly device. Figure 3The five-way switch assembly equipment includes a frame 1, a base transmission mechanism 2 for transmitting the base material strip, a dust cleaning mechanism 3 for cleaning, a reed installation mechanism 4 for installing the reed, a film application mechanism 5 for applying the film, a combined installation mechanism 6 for installing the plum blossom seat and the handle, an end cover installation mechanism 7 for installing the end cover, and a blanking mechanism 8 for unloading.

[0051] Reference Figure 3 、 Figure 4 The base transmission mechanism 2 includes a transmission base 21 and a base transmission assembly 22 that drives the base material belt to move. The transmission base 21 is fixed on the frame 1 and extends along the arrangement direction of the base on the base material belt. The transmission base 21 extends in the horizontal direction. A transmission groove 211 is provided on the side wall of the transmission base 21. The transmission groove 211 extends along the extension direction of the transmission base 21. The transmission groove 211 is used for the base material belt to slide so that the base material belt can be transmitted along the arrangement direction of the base. The transmission groove 211 passes through the transmission base 21 upward to expose the base. The cleaning mechanism 3, the spring installation mechanism 4, the film application mechanism 5, the combined installation mechanism 6, the installation mechanism and the blanking mechanism 8 are arranged in sequence along the extension direction of the transmission base 21.

[0052] Reference Figure 3 、 Figure 4 The base transport assembly 22 includes a transverse transport cylinder 221, a longitudinal transport cylinder 222, a transport slide 223, and multiple transport rods 224 fixed to the transport slide 223. Each transport rod 224 is arranged on the transport slide 223 along the transport direction of the base material strip. The cylinder body of the transverse transport cylinder 221 is fixed to the frame 1, the cylinder body of the longitudinal transport cylinder 222 is fixed to the slide of the transverse transport cylinder 221, and the transport slide 223 is fixed to the slide of the longitudinal transport cylinder 222. The piston rod of the transverse transport cylinder 221 extends and retracts along the extension direction of the transport base 21, while the piston rod of the longitudinal transport cylinder 222 extends and retracts vertically.

[0053] Reference Figure 3 、 Figure 4The bottom wall of the transfer base 21 is provided with a clearance slot 212 that connects to the transfer slot 211. The clearance slot 212 allows for the insertion and sliding of transfer rods 224, which are inserted into the transfer holes in the base material strip. To transfer the base material strip, the longitudinal transfer cylinder 222 first drives the transfer slide 223 and transfer rods 224 upward, allowing each transfer rod 224 to be inserted into a different transfer hole in the base material strip. The transverse transfer cylinder 221 then drives the longitudinal transfer cylinder 222, transfer slide 223, and transfer rods 224 along the base material strip, thereby moving the base material strip. After the base material strip is moved, the longitudinal transfer cylinder 222 returns the slide and transfer rods 224 downward, allowing the transfer rods 224 to move out of the transfer holes. Finally, the transverse transfer cylinder 221 returns the slide. This repetitive process completes the transfer of the base material strip.

[0054] Reference Figure 5 The dust cleaning mechanism 3 includes a dust blowing assembly 31 and a dust collecting assembly 32, which are arranged along the conveying direction of the base material strip. The dust blowing assembly 31 includes an air pipe 311 fixed to the conveying base 21, and an air nozzle 312 fixed to the end of the air pipe 311. The air nozzle 312 can be aligned with the groove of any base on the base material strip. By connecting an air outlet device to the air pipe 311, the air nozzle 312 emits air to blow out the dust in the base groove.

[0055] Reference Figure 5 The ash suction component 32 includes an ash suction cover 321, an ash suction seat 322, a plurality of ash suction blocks 323 fixed on the ash suction seat 322, and an ash suction driving source 324 for driving the ash suction seat 322 to move. The ash suction cover 321 is fixed on the upper side of the transmission seat 21, and the ash suction cover 321 and the transmission seat 21 enclose a relatively closed space. The ash cleaning mechanism 3 also includes two transparent cover plates 33 fixed on the upper side of the transmission seat 21, one of the transparent cover plates 33 is located between the ash blowing component 31 and the ash suction cover plate 321, and the other transparent cover plate 33 is located between the ash suction cover plate 321 and the spring mounting mechanism 4, and both transparent cover plates 33 enclose a relatively closed space with the transmission seat 21. The transparent cover plate 33 is made of transparent material, and the base material belt transmitted in the transmission slot 211 can be seen through the transparent cover plate 33.

[0056] Reference Figure 5The ash suction drive source 324 is a pneumatic cylinder. Its cylinder is fixed to the frame 1. Its piston rod extends vertically. The ash suction seat 322 is fixed to the piston rod of the ash suction drive source 324. Ash suction blocks 323 extend vertically through and slide onto the ash suction cover 321. Each ash suction block 323 is spaced apart along the arrangement direction of the base, and the bottom end of each ash suction block 323 is inserted into a different base groove. Ash suction holes (not shown) are defined in the bottom wall of each ash suction block 323 and extend vertically through the ash suction seat 322. Air ducts (not shown) are defined in the ash suction seat 322, connecting each of the holes. By connecting an exhaust device to the ash suction seat 322 and evacuating the air ducts, dust in the base grooves can be drawn into the exhaust device through the holes and air ducts. Multiple ash suction blocks 323 can be used to perform multiple ash suction operations on multiple base grooves.

[0057] Reference Figure 5 The reed mounting mechanism 4 includes a reed transport assembly 41 for transporting the reeds and a reed blanking assembly 42 for blanking the reeds. The reed transport assembly 41 is capable of driving the reeds to move to the upper side of the corresponding base. The reed transport assembly 41 includes a transport platform 411 fixed to the transport base 21. Two guide slots 4111 are defined on the upper surface of the transport platform 411. The guide slots 4111 extend perpendicularly to the direction of extension of the transport base 21 and extend through the transport platform 411 along their own extension direction. Both guide slots 4111 are used to allow the reed strip to pass through and slide.

[0058] Reference Figure 5 、 Figure 6 The reed transmission assembly 41 also includes a slider 412, a reset elastic member 413, a limit seat 414, and two transmission needles 415. A connecting groove 4112 is provided on the bottom wall of each guide slot 4111. A mounting cavity 4113 is provided on the transmission platform 411. The connecting groove 4112 connects the mounting cavity 4113 with the guide slot 4111. The slider 412 is slidably arranged in the mounting cavity 4113 along the transmission direction of the reed strip. The reset elastic member 413 is arranged in the mounting cavity 4113. The slider 412 and the reset elastic member 413 are arranged along the transmission direction of the reed strip. In the embodiment of the present application, the reset elastic member 413 is a spring. The reset elastic member 413 expands and contracts along the sliding direction of the slider 412, and the two ends of the reset elastic member 413 respectively press against the cavity wall of the mounting cavity 4113 and the slider 412. In other embodiments, the reset elastic member 413 may also be made of rubber, etc. Any method that can drive the slider 412 to reset along the transmission direction away from the spring strip is acceptable.

[0059] Reference Figure 6The ends of the transmission pins 415 are inserted into the transmission holes of the spring strip. Each transmission pin 415 is located in a different connecting groove 4112 and slides within the connecting groove 4112 along the direction of transmission of the spring strip. The transmission pins 415 vertically penetrate and slide on the slider 412, with the lower ends of the transmission pins 415 extending into the mounting cavity 4113. A limit block 418 is slidably disposed within the mounting cavity 4113. The limit block 418 is located below the slider 412, and the lower ends of the two transmission pins 415 are fixed to the limit block 418. The transmission pins 415 are provided with a downward elastic member 419. In the embodiment of the present application, the downward elastic member 419 is a spring that is sleeved on the transmission pins 415. The downward elastic member 419 expands and contracts vertically, and the ends of the downward elastic member 419 respectively abut the limit block 418 and the slider 412. In other embodiments, the downward elastic member 419 may also be a spring, etc., and any method that can apply a downward force to the transmission needle 415 is acceptable.

[0060] Reference Figure 6 The stopper 414 is fixed to the wall of the mounting cavity 4113. A clearance channel 4141 is defined on the upper end surface of the stopper 414. This channel extends along the direction of transmission of the spring strip and vertically penetrates the stopper 414. The clearance channel 4141 allows the two transmission needles 415 and the two downward elastic members 419 to pass through and slide. The horizontal cross-sectional length of the stopper 418 is greater than the horizontal slot width of the clearance channel 4141, allowing the stopper 418 to move vertically offset from the stopper 414. A gap exists between the inner bottom wall of the mounting cavity 4113 and the stopper 414 to allow the stopper 418 to pass through.

[0061] Reference Figure 6 The spring transmission assembly 41 also includes an ejector block 416 and an ejector elastic member 417. The ejector block 416 and the limit seat 414 are arranged along the transmission direction of the spring strip. A telescopic groove 4114 extending in the vertical direction is provided on the inner bottom wall of the installation cavity 4113. The ejector block 416 is slidably arranged in the telescopic groove 4114 in the vertical direction. There are multiple ejector elastic members 417 and they are all located in the telescopic groove 4114. Each ejector elastic member 417 is located on the lower side of the ejector block 416. In the embodiment of the present application, the ejector elastic member 417 is a spring. The ejector elastic member 417 is telescopic in the vertical direction, and the two ends of the ejector elastic member 417 are respectively pressed against the bottom of the telescopic groove 4114 and the ejector block 416. In other embodiments, the ejector elastic member 417 can also be rubber, etc., and any method that can reset the ejector block 416 upward is acceptable.

[0062] Reference Figure 6The upper end of the ejection block 416 is provided with a downward pressing slope 4161, which faces the limit seat 414 and is used to interfere with the limit block 418. When the ejection elastic member 417 is in a natural state, that is, when the ejection elastic member 417 is not under force, the upper end surface of the ejection block 416 is not lower than the upper end surface of the limit seat 414. The force exerted by the ejection elastic member 417 on the ejection block 416 is much greater than the force exerted by the downward elastic member 419 on the limit block 418. When the limit block 418 is located below the limit seat 414 and completely above the ejection block 416, the ejection elastic member 417 can push the ejection block 416 to move, and through the ejection block 416, push the limit block 418 to move to the upper side of the limit seat 414.

[0063] Reference Figure 5 The reed blanking assembly 42 includes a reed pressure plate 421 that covers and is fixed to the transmission seat 21, a reed seat 422 fixed to the transmission seat 21, a reed punch seat 423 that slides vertically on the reed seat 422, a reed elastic member 424 for resetting the reed seat 422 upward, a plurality of reed punches 425 fixed to the lower side of the reed punch seat 423, and a reed drive source 426 for driving the reed punch seat 423 downward. The reed elastic member 424 is disposed between the reed punch seat 423 and the reed pressure plate 421. In the embodiment of the present application, the reed elastic member 424 is a spring that expands and contracts vertically, with the two ends of the reed elastic member 424 respectively pressing against the reed pressure plate 421 and the reed punch seat 423. In other embodiments, the reed elastic member 424 can also be made of rubber, etc., and any method that can reset the reed punch seat 423 upward is acceptable. Under the action of the reed elastic member 424 , there is always a gap between the reed punch seat 423 and the reed pressing plate 421 .

[0064] Reference Figure 5 The reed punch 425 slides vertically along the reed punch seat 423. The reed punch 425 vertically penetrates and slides on the reed pressure plate 421. The reed punch 425 can extend into the transmission groove 211 and punch the reeds off the reed strip. In this embodiment of the application, there are two sets of reed punches 425 to accommodate two reeds in the grooves of each base.

[0065] Reference Figure 5 、 Figure 6The reed mounting mechanism 4 also includes a linkage assembly 43, which includes a linkage seat 431, a linkage head 432, a linkage wheel 433, and a linkage block 434. The reed drive source 426 is fixed on the reed seat 422. In the embodiment of the present application, the reed drive source 426 is a cylinder. In other embodiments, the reed drive source 426 can also be an electric push rod, etc., and any method that can drive the linkage seat 431 to move back and forth in the vertical direction is acceptable. The piston rod of the reed drive source 426 extends and retracts in the vertical direction, and the linkage seat 431 is fixed on the piston rod of the reed drive source 426. The linkage block 434 and the linkage head 432 are both fixed on the linkage seat 431. The linkage head 432 is located on the upper side of the reed punch seat 423 and is used to contact the reed punch seat 423 to drive the reed punch seat 423 to move downward. One end of the slider 412 extends outside the mounting cavity 4113, and the linkage wheel 433 is rotatably arranged on the slider 412. The linkage block 434 and linkage wheel 433 are arranged along the transmission direction of the spring strip. A linkage slope 4341 is defined at the lower end of the linkage block 434. This slope faces the linkage wheel 433 and is configured to abut against the linkage wheel 433. One surface of the linkage block 434 is a linkage straight surface 4342, which extends vertically. This straight surface 4342 is located above and connects to the linkage slope 4341 and is also configured to abut against the linkage wheel 433.

[0066] Reference Figure 5 、 Figure 6 When the spring elastic member 424 is in its natural state and the linkage head 432 contacts the spring punch seat 423, the linkage wheel 433 contacts the linkage straight surface 4342, and the limit block 418 is vertically offset from the limit seat 414. When the linkage block 434 is separated from the linkage wheel 433, the limit block 418 is located above the ejection block 416, and the limit block 418 is vertically offset from the limit seat 414.

[0067] Reference Figure 5 、 Figure 6When transferring and blanking the spring strip, first pass the spring strip between the spring pressure plate 421 and the transfer seat 21, insert the spring strip into the corresponding guide slot 4111, and insert the transfer pin 415 into the transfer hole of the spring strip. The spring drive source 426 then drives the linkage seat 431 downward, and the linkage block 434 and linkage head 432 move downward together. The linkage inclined surface 4341 first contacts the linkage wheel 433, thereby driving the slider 412 to move. The slider 412 drives the transfer pin 415 inserted into the transfer hole of the spring strip, thereby driving the spring strip to move, until the linkage wheel 433 moves to contact the linkage straight surface 4342. At this point, the limit block 418 is vertically offset from the limit seat 414, meaning the lower side of the limit block 418 is no longer blocked by the limit seat 414. Under the action of the downward elastic member 419, the limit block 418 and the transmission needle 415 move downward, and the transmission needle 415 moves out of the transmission hole in the spring strip. As the spring drive source 426 continues to drive the linkage seat 431 downward, the linkage head 432 contacts the spring punch seat 423 and drives the spring punch 425 downward, completing the spring blanking.

[0068] Reference Figure 5 、 Figure 6 When resetting, the linkage seat 431 is reset upward by the spring drive source 426, and the spring punch 425 is first reset upward by the spring elastic member 424 and the spring punch seat 423. After the linkage block 434 moves to the linkage wheel 433 and contacts the linkage inclined surface 4341, the slider 412 drives the transmission needle 415 to move under the action of the reset elastic member 413, thereby driving the limit block 418 to move. During the movement, the limit block 418 presses against the downward pressing inclined surface 4161, and the ejection block 416 moves downward. As the slider 412 continues to reset, the limit block 418 moves completely to the ejection block 416 and is offset from the limit seat 414 in the vertical direction. At this time, under the action of the ejection elastic member 417, the ejection block 416 moves upward and drives the limit block 418 and the transmission needle 415 to move upward, and the transmission needle 415 is inserted into the next transmission hole on the spring strip. This process is repeated to realize the transmission of the reed strip and the punching of the reed.

[0069] Reference Figure 7 The film laminating mechanism 5 includes a film laminating seat 51 fixed to the frame 1, a film unwinding wheel 52 rotatably mounted on the frame 1, a film take-up wheel 53 for winding the film, a rotating assembly 54 for driving the film take-up wheel 53, and a film punching assembly 55 for punching the film. The film punching assembly 55 is located between the film unwinding wheel 52 and the film take-up wheel 53. Two active rollers 56 and six transmission rollers 57 are also rotatably mounted on the frame 1. One active roller 56 and two transmission rollers 57 are located between the film unwinding wheel 52 and the film punching assembly 55, while another active roller 56 and the remaining two transmission rollers 57 are located between the film take-up wheel 53 and the film punching assembly 55.

[0070] Reference Figure 8 The rotating assembly 54 is also used to drive the two active rollers 56 to rotate. The rotating assembly 54 includes a rotating motor 541, multiple synchronous pulleys 542, and multiple synchronous belts 543. Each synchronous pulley 542 is respectively mounted and fixed on the rotating shaft of the film winding wheel 53, the rotating shaft of the active roller 56, and the output shaft of the rotating motor 541. One synchronous belt 543 is mounted on the rotating shaft of the active roller 56 and the output shaft of the rotating motor 541, and the other synchronous belt 543 is mounted on the output shaft of the rotating motor 541 and the rotating shaft of the film winding wheel 53. The power output by the rotating motor 541 can achieve the coordinated rotation of the film unwinding wheel 52, the film winding wheel 53, and the active roller 56.

[0071] Reference Figure 7 The film punching assembly 55 includes a film punching block 551, a film punching seat 552, a film punching head 553, a film punching spring 554, and a film punching drive source 555. The film punching drive source 555 is fixed to the film sticking seat 51. In the embodiment of the present application, the film punching drive source 555 is a cylinder. In other embodiments, the film punching drive source 555 can also be an electric push rod, etc., which can drive the film punching seat 552 to move back and forth in the vertical direction.

[0072] Reference Figure 7 The piston rod of the film driving source 555 is retracted and expanded in the vertical direction, and the film seat 552 is fixed on the piston rod of the film driving source 555. The film pressing block 551 is located on the lower side of the film seat 552, and the film spring 554 is located between the film pressing block 551 and the film seat 552. The film spring 554 is retracted and expanded in the vertical direction, and the two ends of the film spring 554 are respectively fixed between the film seat 552 and the film pressing block 551. A film-penetrating channel 556 is penetrated on the side wall of the film pressing block 551, and the film-penetrating channel 556 is used for allowing the film to pass through. The film head 553 is fixed on the film seat 552, and the film head 553 is penetrated and slidably set on the film pressing block 551 in the vertical direction.

[0073] Reference Figure 7 Before punching the film, the film on the film-laying wheel 52 is first passed through the film-threading channel 556 and then onto the film-collecting wheel 53. When punching the film, the punching drive source 555 drives the punching seat 552 downward, and the punching block 551 first presses against the base material strip. As the punching seat 552 continues to move downward, the punching seat 552 and the punching head 553 move relative to the punching block 551. The punching head 553 punches off a piece of film and presses the punched film against the spring.

[0074] Reference Figure 3 、 Figure 9 The combined installation mechanism 6 includes a plum blossom seat transmission component 61, a handle transmission component 62 and a combined installation component 63.

[0075] Reference Figure 9 、 Figure 10 The combined mounting assembly 63 includes an upper seat 631, a lower seat 632, and a lifting drive source 633. The plum blossom seat transmission assembly 61 includes a plum blossom seat vibration plate 611 and a plum blossom seat guide rail 612. The plum blossom seat vibration plate 611 and the plum blossom seat guide rail 612 are both fixed to the frame 1. The plum blossom seat vibration plate 611 is used to transfer the plum blossom seat to the plum blossom seat guide rail 612. The plum blossom seat guide rail 612 is fixedly connected to the upper seat 631 and is used to transfer the plum blossom seat to the upper seat 631. A clearance hole 634 is vertically penetrated on the upper seat 631, and the clearance hole 634 is used to allow the handle to pass through.

[0076] Reference Figure 10 The lifting drive source 633 is a cylinder fixed on the frame 1, and the piston rod of the lifting drive source 633 is retracted in the vertical direction. The lower seat 632 is located on the lower side of the upper seat 631 and is fixed on the piston rod of the lifting drive source 633. In other embodiments, the lifting drive source 633 can also be an electric push rod, etc., and any method that can drive the lower seat 632 to move back and forth in the vertical direction is acceptable. The handle transmission assembly 62 includes a handle vibration disk 621 and a handle guide rail 622, and the handle vibration disk 621 and the handle guide rail 622 are both fixed on the frame 1. The handle vibration disk 621 is used to transmit the handle to the handle guide rail 622, and the handle guide rail 622 can transmit the handle to the lower seat 632 and into the clearance hole 634. The lower seat 632 is slidably arranged in the clearance hole 634 along the vertical direction.

[0077] Reference Figure 9 、 Figure 10 When pre-assembling the handle and the plum blossom seat, the plum blossom seat is first transferred to the upper seat 631 through the plum blossom seat vibration plate 611 and the plum blossom seat guide rail 612, and the handle is transferred to the lower seat 632 through the handle vibration plate 621 and the handle guide rail 622, and then the handle is lifted through the lower seat 632 to pass the handle through the clearance hole 634 and inserted into the plum blossom seat.

[0078] Reference Figure 9 、 Figure 10 The combined mounting mechanism 6 also includes a combined grabbing member 64 for grabbing the handle and the plum blossom seat, and a combined drive source 65 for driving the combined grabbing member 64 to move. The combined drive source 65 is composed of a rodless cylinder mounted on the frame 1 and a piston cylinder mounted on the rodless cylinder. The piston cylinder is fixed to the slide of the rodless cylinder, and the combined grabbing member 64 is fixed to the piston rod of the rodless cylinder. The slide of the rodless cylinder moves horizontally, and the piston of the piston cylinder extends and retracts vertically. The combined grabbing member 64 is a suction cup that absorbs the handle and plum blossom seat and transfers them.

[0079] Reference Figure 9 、 Figure 10The end cover mounting mechanism 7 includes an end cover seat 71 fixed on the frame 1, an end cover transmission assembly 72 for transferring the end cover to the end cover seat 71, an end cover grabbing member 73 for grabbing the end cover, and an end cover driving source 74 for driving the end cover grabbing member 73 to move. The end cover transmission assembly 72 includes an end cover vibration disk 721 and an end cover guide rail 722, and the end cover vibration disk 721 and the end cover guide rail 722 are both fixed on the frame 1. The end cover vibration disk 721 is used to transfer the end cover to the end cover guide rail 722, and the end cover guide rail 722 is fixedly connected to the end cover seat 71 and is used to transfer the end cover to the end cover seat 71. The structure of the end cover driving source 74 is consistent with that of the combined driving source 65, only the setting position is different, and no further details are given here. The end cover grabbing member 73 is fixed on the piston cylinder of the end cover driving source 74, and the end cover grabbing member 73 is a suction cup to suck the end cover and transfer the end cover.

[0080] Reference Figure 9 、 Figure 10 When installing the end cover, the end cover is first transferred to the end cover seat 71 through the end cover transmission component 72, and then the end cover is grabbed by the end cover grabbing member 73, and then the end cover grabbing member 73 and the end cover are moved by the end cover transmission component 72, and the end cover is installed on the base.

[0081] Reference Figure 9 The blanking mechanism 8 includes a blanking seat 81 fixed on the frame 1, a cutter seat 82 slidingly arranged on the blanking seat 81 in the vertical direction, two blanking cutters 83 fixed on the cutter seat 82, and a blanking cylinder 84 installed on the blanking seat 81. The piston rod of the blanking cylinder 84 is retracted in the vertical direction and fixedly connected to the cutter seat 82. The two material strip cutters are arranged along the transmission direction of the base material strip.

[0082] Reference Figure 9 After the five-way switch is assembled, the cutter seat 82 is driven downward by the blanking cylinder 84, and the two blanking cutters 83 are moved downward to disconnect the connection between the base and the base material strip body.

[0083] The implementation principle of a five-way switch assembly device according to an embodiment of the present application is as follows: the base material strip is transmitted through the base transmission component 22 so that the base material strip can move in the transmission slot 211. The dust cleaning mechanism 3 blows and absorbs dust from the groove of the base in turn, and then installs two reeds into the groove of the base through the reed installation mechanism 4, and then applies the film to the reeds through the film sticking mechanism 5 to further isolate the dust. After the combined installation mechanism 6 pre-assembles the plum blossom seat and the handle, the two are installed together in the base. Finally, the end cover is installed on the base through the end cover installation mechanism 7, and the assembly of the five-way switch is completed. The blanking mechanism 8 disconnects the base from the main body of the base material strip to complete the production of the five-way switch.

[0084] This setting not only effectively removes dust, but also limits subsequent dust from entering between the reed and the terminals of the base, ensuring the control sensitivity of the five-way switch and improving the yield rate of the five-way switch.

[0085] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A five-way switch assembly device, characterized by: The invention comprises a base transmission mechanism (2) for transmitting a base material belt, a dust cleaning mechanism (3) and a reed installation mechanism (4) for installing a reed on the base, wherein the base transmission mechanism (2) comprises a transmission seat (21) for sliding the base material belt and a base transmission component (22) for driving the base material belt to move, the dust cleaning mechanism (3) and the reed installation mechanism (4) are arranged on the transmission seat (21), and the dust cleaning mechanism (3) and the reed installation mechanism (4) are arranged along the transmission direction of the base material belt on the transmission seat (21); The soot cleaning mechanism (3) comprises a soot blowing assembly (31) and a soot sucking assembly (32), the soot blowing assembly (31) and the soot sucking assembly (32) being arranged along the transmission direction of the base material belt, the soot blowing assembly (31) comprising an air pipe (311) and an air nozzle (312) arranged at the end of the air pipe (311), and the air nozzle (312) can be aligned with any base; The ash suction component (32) comprises an ash suction cover plate (321) covering the transmission seat (21), an ash suction block (323) penetrating and slidably arranged on the ash suction cover plate (321), and an ash suction driving source (324) driving the ash suction block (323) to move, wherein the end of the ash suction block (323) is used to be inserted into the groove of the base, and an ash suction hole is penetrated on the end of the ash suction block (323) for being inserted into the groove of the base; The film sticking mechanism (5) is also included. The film sticking mechanism (5) includes a film placing wheel (52), a film collecting wheel (53), and a film punching assembly (55). The film punching assembly (55) is arranged on the transmission seat (21), and the film punching assembly (55) is arranged between the film placing wheel (52) and the film collecting wheel (53). The film punching assembly (55) comprises a film punching head (553) and a film punching driving source (555) for driving the film punching head (553) to move. The end of the film punching head (553) is used to be inserted into the groove of the base.

2. The five-way switch assembly device according to claim 1, characterized in that: The dust cleaning mechanism (3) further comprises a transparent cover plate (33) covering the transmission seat (21), wherein the transparent cover plate (33) is arranged between the dust collecting cover plate (321) and the spring installation mechanism (4).

3. The five-way switch assembly device according to claim 1, characterized in that: The reed installation mechanism (4) comprises a reed transmission assembly (41) for transmitting the reed and a reed blanking assembly (42) for blanking the reed. The reed transmission assembly (41) is capable of driving the reed to move to the upper side of the corresponding base. The reed blanking assembly (42) comprises a reed punch (425) and a reed driving source (426) for driving the reed punch (425) to move in a vertical direction.

4. The five-way switch assembly device according to claim 3, characterized in that: The spring sheet transmission assembly (41) includes a transmission platform (411), a limit seat (414), a transmission needle (415), a slider (412), a reset elastic member (413), an ejection block (416) and an ejection elastic member (417). The transmission platform (411) is used for sliding the spring sheet material strip. A connecting groove (4112) is provided on the upper surface of the transmission platform (411). A mounting cavity (4113) connected to the connecting groove (4112) is provided on the transmission platform (411). The transmission needle (415) is slidably arranged in the connecting groove (4112) along the transmission direction of the spring strip, and the transmission needle (415) extends into the installation cavity (4113). The transmission needle (415) passes through the slider (412) in the vertical direction. A limiting block (418) is provided on the transmission needle (415). A clearance channel (4141) is passed through the limiting seat (414) in the vertical direction. The clearance channel (4141) is used for the transmission needle (415) to extend into and slide with the slider. The minimum cross-sectional width of the limit block (418) in the horizontal direction is greater than the width of the clearance channel (4141) in the horizontal direction. The limit block (418) can be moved to be offset from the limit seat (414) in the vertical direction. The reset elastic member (413) is connected to the slider (412) and is used to drive the slider (412) to reset along the transmission direction of the back spring material strip. The ejection block (416) and the limit seat (414) are arranged along the transmission direction of the spring material strip. The ejection block (416) and the limit seat (414) are arranged along the transmission direction of the spring material strip. 16) is slidably arranged in the installation cavity (4113) along the vertical direction, and the ejection elastic member (417) is used to reset the ejection block (416) upward. When the ejection elastic member (417) is in a natural state, the upper surface of the ejection block (416) is not lower than the upper surface of the limit seat (414), and the upper end of the ejection block (416) is provided with a downward pressing inclined surface (4161) facing the limit seat (414), and the downward pressing inclined surface (4161) is used to contact the limit block (418).

5. The five-way switch assembly device according to claim 4, characterized in that: The reed punching assembly (42) further comprises a reed punch seat (423) and a reed elastic member (424), wherein the reed punch (425) is connected to the reed punch seat (423), and the reed elastic member (424) is used to reset the reed punch seat (423) upwards. The reed installation mechanism (4) comprises a linkage assembly (43), wherein the linkage assembly (43) comprises a linkage seat (431), a linkage head (432), a linkage wheel (433) and a linkage block (434), and the reed driving source (426) is used to drive the linkage seat (431) to move in a vertical direction, wherein the linkage head (432) and the linkage block (434) are connected to each other. 34) are all arranged on the linkage seat (431), the linkage wheel (433) is rotatably arranged on the slider (412), the linkage block (434) and the linkage wheel (433) are arranged along the transmission direction of the spring strip, the lower end of the linkage block (434) is provided with a linkage inclined surface (4341) for contacting the linkage wheel (433), the surface of the linkage block (434) located on the upper side of the linkage inclined surface (4341) and connected with the linkage inclined surface (4341) is a linkage straight surface (4342), the linkage straight surface (4342) extends in the vertical direction, and the linkage head (432) is located on the upper side of the linkage seat (431); When the spring elastic member (424) is in a natural state and the linkage head (432) contacts the spring punch seat (423), the linkage wheel (433) contacts the linkage straight surface (4342), and the limit block (418) and the limit seat (414) are staggered in the vertical direction; When the linkage block (434) is separated from the linkage wheel (433), the limit block (418) is located on the upper side of the ejection block (416), and the limit block (418) and the limit seat (414) are staggered in the vertical direction.

6. The five-way switch assembly device according to claim 5, characterized in that: The transmission needle (415) is provided with a downward elastic member (419), and the downward elastic member (419) is used to apply a downward force to the transmission needle (415).

7. The five-way switch assembly device according to claim 1, characterized in that: The invention also includes a combined mounting mechanism (6), wherein the combined mounting mechanism (6) includes a plum blossom seat transmission component (61), a handle transmission component (62) and a combined mounting component (63), wherein the combined mounting component (63) includes a lower seat (632), an upper seat (631), a lifting driving source (633) for driving the lower seat (632) to move in a vertical direction, a combined grabbing member (64) for grabbing the handle and the plum blossom seat, and a combined driving source (65) for driving the combined grabbing member (64) to move, wherein the plum blossom seat transmission component (61) is used to transfer the plum blossom seat to the upper seat (631), and the handle transmission component (62) is used to transfer the handle to the lower seat (632), and a clearance hole (634) for allowing the handle and the lower seat (632) to pass through is vertically penetrated on the upper seat (631).

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