TW202108304A - Three-dimensional ratchet trigger structure with non-return function - Google Patents

Abstract

Three-dimensional ratchet trigger structure with non-return function has a housing, and a clamping block disposed in the housing. A central shaft is disposed on the clamping block, and a top block having a climbing surface is formed on a annular surface of the clamping block. A pivot part of a trigger is pivotally mounted on the housing. The pivot part protrudes toward the clamping block by a circular arc-shaped main ratchet strip. The central shaft is repositionably sleeved with a main ratchet block, and the main ratchet block is provided with bottom blocks matching each of the top blocks. When the trigger is pressed and rotated in the forward direction, the main ratchet block unidirectionally locks the main ratchet strip. When the main ratchet strip is disengaged from the main ratchet block, the main ratchet strips reverse the main ratchet block with its bottom edge, and the main ratchet block traverses along the climbing surface with its bottom block to flip off the plane of the main ratchet strip. The present invention can reduce the amplitude of the idle stroke of the main ratchet block when the trigger is released, so that the structure of the non-return effect is more compact.

Description

Trigger three-dimensional ratchet backstop structure

The invention relates to a trigger backstop structure, in particular to a trigger three-dimensional ratchet backstop structure.

The structure of the existing surgical clip applier is provided with a drive unit. The housing of the drive unit has a handle. The drive unit is pivotally connected to a trigger located in front of the handle. The user can hold the handle and press the trigger to rotate in a forward direction. In this way, the link mechanism of the drive unit is driven by a trigger to link the jaws at the front end of the clip applying unit to clamp, and clamp the clips in the jaws to the tissues of the body.

In order to prevent the surgical clip applier from opening again in the process of clamping the clip with the jaws, the deformed clip will fall from the opened jaws. Therefore, the above-mentioned surgical clip applier is provided with an avoidance in the housing of the drive unit. The backstop mechanism for the reverse rotation of the trigger during the forward rotation of the trigger is structured with a ratchet rack on the rear side of the top of the trigger, and a tooth block that can be rotated and reset is pivoted in the housing in conjunction with the ratchet rack. The tooth-locking block unidirectionally engages the ratchet rack to achieve a backstop effect. However, in the above-mentioned structure, the ratchet bar needs to be moved at a larger angle when the ratchet block is reversed to make the ratchet block release the ratchet bar, so that when the wrench is released, the ratchet bar of the wrench and the card The tooth block has a large idle stroke.

Because the existing trigger has a larger idle stroke when the ratchet rack and the tooth block are released under pressure. For this reason, the present invention uses the structure that can translate the locking tooth block when it is reversed, so that the locking tooth block can jump out of the plane locked with the ratchet rack when the trigger is released, so as to reduce the reverse movement of the main locking tooth when the trigger is released. The idle stroke range of the block makes the backstop structure more compact.

In order to achieve the above creative purpose, the present invention provides a trigger three-dimensional ratchet backstop structure, which includes:

A housing, the housing is provided with a handle, a trigger opening is formed in front of the top side of the handle, a trigger pivotal part is formed in the housing in cooperation with the trigger opening, and is formed on one of the left and right inner sides of the housing A card block seat, the card block seat is a horizontal column and a circular flat surface is formed on the end surface of the free end, and more than one top block is formed on the flat surface in a surrounding and spaced arrangement. A connected climbing surface and a top are formed, and a central axis is arranged in the center of the block seat;

A trigger is provided with a pressing handle, a pivotal part is formed on the top of the pressing handle, the pivotal part penetrates the trigger opening and is pivotally connected to the trigger pivotal part, and a driving member extends from the pivotal part, An extension portion protrudes from the pivotal portion toward the direction of the block seat. A main ratchet rack is provided on the outer edge of the extension portion. The main ratchet rack includes a plurality of centers arranged in a circle with the pivotal portion as the center. Curved main ratchet; and

A clamping tooth structure, including a main clamping tooth block, the main clamping tooth block is provided with a main collar, the main collar is rotatably sleeved on the central shaft, with more than one top block, in the main collar with The surrounding and spaced arrangement forms more than one bottom block, each bottom block forms a connected inclined surface and a bottom end, and each inclined surface matches each climbing surface, and each bottom end abuts against the flat surface to match the main spine The rack is provided with a main clamping tooth protruding around the main collar, a rotation return spring is combined between the main clamping tooth block and the housing, and a pressure spring is sleeved on the outside of the central shaft, and the clamping spring drives the The main tooth block is reset to the direction of the block seat.

Further, in the present invention, more than one auxiliary ratchet rack is arranged side by side on the outer edge of the extension part and the main ratchet rack, and the main ratchet rack is one of the auxiliary ratchet rack closest to the main ratchet rack. There is a space between the two adjacent ratchet racks. Each auxiliary ratchet rack includes a plurality of auxiliary ratchet teeth arranged in an arc shape with the pivotal portion as the center of the circle. Each auxiliary ratchet The teeth have the same shape as the main ratchet teeth. The positions of the main ratchet rack and the one or more secondary ratchet racks are respectively successively rotated and misaligned, and the angle of the respective successive rotation and dislocation is the angle between two adjacent main ratchet teeth divided by Based on the total angle of the main ratchet rack and the one or more auxiliary ratchet racks; in conjunction with more than one auxiliary ratchet rack, the clamping tooth structure is provided with more than one auxiliary clamping tooth block, each auxiliary clamping tooth block A secondary collar is provided, and the one or more secondary clamping tooth blocks are rotatably sleeved on the part of the central shaft located outside the main clamping tooth block with each secondary collar, and the secondary ratchets are matched with the secondary ratchets in each A pair of teeth is protruded around the secondary collar, another rotary return spring is respectively combined between each secondary teeth block and the housing, and one end of the pressing spring abuts against the outermost secondary tooth block , The other end abuts against the inner side of the housing, so that the pressing spring drives the auxiliary tooth blocks and the main tooth block to reset in the direction of the block seat.

Furthermore, the present invention corresponds to the position between the main ratchet rack and the auxiliary ratchet rack closest to the main ratchet rack, and a reverse ratchet rack is formed on the outer edge of the extension portion. The direction of locking the main locking tooth toward the ratchet bar is opposite to the direction of the main ratchet bar.

Preferably, the present invention cooperates with the main tooth block and the one or more auxiliary tooth blocks, two or more spring pins are fixed in the housing, and the main collar of the main tooth block A main lug is provided around the main lug, a main hook hole is perforated in the main lug, a pair of lugs are respectively provided around the sub-rings of the sub-clamping blocks, and a pair of lugs is perforated in each sub-lug. A hook hole, one of the two or more rotary return springs is hooked on one of the spring pins and the main hook hole at both ends, and the other rotary return springs are hooked on the other spring at both ends respectively Bolt and each auxiliary hook hole.

Preferably, the trigger pivot part of the present invention is formed by forming two round pipes on the left and right inner sides of the housing, and a rotating shaft slot is formed in the two round pipes, and a rotating shaft slot is inserted between the two rotating shaft slots. A rotating shaft, the clamping block seat is located behind the pivoting part of the trigger; the pressing handle is a long plastic handle, and a metal plate slot extending downward is provided at the top of the pressing handle. A shaft hole is transversely pierced, two ends of the shaft hole respectively form a circular counterbore on both sides of the pivoting portion, the shaft hole communicates with the metal plate groove, and is inserted into the metal plate slot A metal plate is fixed, a shaft hole communicating with the shaft hole is penetrated in the metal plate, the driving member is extended upward from the top of the metal plate, and the extension is formed by the metal plate. The top part extends backward to form; the two round tubes are inserted into two countersunk holes, and the rotating shaft pivots through the shaft hole and the shaft perforation.

When the present invention is in use, the user holds the grip and presses the lever of the trigger to rotate in the forward direction. During the process, the driver of the trigger drives the mechanism installed in the housing, for example, when the present invention is applied to a surgical clip applier When the driving member is used to drive the clip applying unit of the surgical clip applier, when the main ratchet rack rotates in the forward direction as the pressing handle is pressed, the main clamping tooth of the main clamping tooth block will unidirectionally in the process Engage with the main ratchet rack.

The effect of the present invention is that when the pressing handle is pressed to the end and the main tooth block is separated from the main ratchet rack, the pressing handle is then released to rotate in the opposite direction, and the end edge of the main ratchet rack will change during the process. Rotate the main tooth block in the reverse direction, so that the main tooth block slides along each climbing surface with each inclined surface and moves laterally, so that the main tooth jumps out of the plane where the main ratchet rack is located, and the trigger is in the process The rotation range is small, which can reduce the idle stroke range of the main ratchet rack when the end edge of the main ratchet rack is reversed to move the main clamping tooth block when the trigger is released, so that the main ratchet rack matches the backstop structure of the main clamping tooth block Can be designed to be more compact.

In order to understand the technical features and practical effects of the present invention in detail, and implement it in accordance with the content of the specification, the preferred embodiments shown in the drawings are further described in detail as follows.

The present invention provides a trigger three-dimensional ratchet backstop structure. Please refer to the preferred embodiment of the present invention shown in FIGS. 1 to 5, which is applied to a surgical clip applier and includes a housing 10 and a pivotal connection to the housing 10. Trigger 20, and a tooth structure 30 integrated in the housing 10; to form the aforementioned surgical clip applier, a clip applying unit 40 protruding forward from the housing 10 is inserted and combined in the housing 10, wherein:

The housing 10 includes a left half-shell A and a right half-shell B that are joined in half to the left and the right. The housing 10 is provided with a handle 11, and a body 12 extending in the front and rear directions is connected to the top of the handle 11, A trigger opening 111 is formed in front of the top side of the handle 11, and a trigger pivot portion 13 is formed in the housing 10 in cooperation with the trigger opening 111. In the preferred embodiment, the trigger pivot portion 13 is in the housing 10. Two round pipes 131 are formed on the left and right inner sides adjacent to the trigger opening 111. A rotating shaft slot 132 is formed in the two round pipes 131, and a rotating shaft 133 is inserted between the two rotating shaft slots 132.

Corresponding to the rear of the trigger pivot portion 13, on one of the left and right inner sides of the housing 10, for example, in the present preferred embodiment, a block seat 14 protruding to the right is formed on the left side and the block seat 14 is A horizontal cylindrical body, a central axis insertion hole 141 is penetrated in the block base 14, a circular flat surface 142 is formed on the end surface of the free end of the block base 14, and the flat surface 142 is arranged in a circle and spaced apart More than one top block 15 is formed. For example, in the preferred embodiment, three of the top blocks 15 are formed on the flat surface 142 in a circumferential and equally spaced arrangement, and each top block 15 forms a connected climbing surface. 151 and a top end 152, a central shaft 16 protruding from the clamping block base 14 is inserted into the central shaft insertion hole 141.

Corresponding to the upper and lower sides at the rear of the block seat 14, two spring pins 17 are fixed in the housing 10, and the two spring pins 17 are rods extending laterally. The clip applying unit 40 is a long rod and is fixed in the body 12 of the housing 10 with a rear end. A drive seat 41 is sleeved on the part of the clip applying unit 40 located in the body 12, and Two driving blocks 411 are provided on the left and right sides of the driving seat 41. By pushing the driving seat 41 forward, the clamping unit 40 can be driven to feed nails into a pliers mouth 42 at the front end and drive the pliers mouth 42 to clamp and apply. During the clip operation, if the driving seat 41 is driven forward and released, it will be driven by the spring mechanism inside the clip applying unit 40 to return to its original position.

The trigger 20 is provided with a pressing handle 21. The pressing handle 21 is a plastic long handle and has a pivoting portion 211 formed on the top. A downwardly extending metal plate slot 212 is provided at the top of the pressing handle 21. A shaft hole 213 is penetrated transversely through the portion 211, two ends of the shaft hole 213 respectively form a round counterbore 2131 on both sides of the pivoting portion 211, and the shaft hole 213 communicates with the metal plate slot 212, A metal plate 22 is inserted and fixed in the metal plate slot 212. In the preferred embodiment, the metal plate 22 includes two side plates 221 arranged side by side on the left and right, and a middle plate sandwiched between the two side plates 221. The two side plates 221 and the middle plate 222 are provided with a shaft hole 223 communicating with the shaft hole 213; the trigger 20 extends into the trigger opening 111 by the pivot portion 211, and the trigger pivot of the housing 10 The two round tubes 131 of the connecting portion 13 are inserted into the two counterbore holes 2131, and the rotating shaft 133 pivots through the shaft hole 213 and the shaft hole 223, so that the pivot portion 211 is pivotally connected to the trigger pivot portion 13.

At the top ends of the two side plates 221 respectively extend upwards a hook rod 224 that penetrates the pivot portion 211 upwards. The metal plate member 22 forms a driving member C with the aforementioned two hook rods 224, and the tops of the two hook rods 224 are hooked On the rear side of the two driving blocks 411. From the tops of the two side plates 221 and the top of the middle plate 222 respectively extend backwards an extension plate 225 passing through the pivot portion 211. The metal plate 22 uses the aforementioned three extension plates 225 to form an extension portion D. The outer edge of the extension plate 225 near the left side of the block base 14 forms a main ratchet rack. The main ratchet rack 226 includes a plurality of main ratchet teeth 2261 arranged in an arc shape with the shaft hole 213 as the center. A pair of ratchet rack 227 is formed on the outer edge of the extension plate 225 on the right side. The auxiliary ratchet rack 227 includes a plurality of auxiliary ratchet teeth 2271 arranged in an arc shape with the shaft hole 213 as the center.

The main ratchet rack 226 and the auxiliary ratchet rack 227 are left and right side by side with a space therebetween. Each auxiliary ratchet tooth 2271 has the same shape as each main ratchet tooth 2261. The auxiliary ratchet rack 227 has multiple auxiliary The position of the ratchet 2271 and the plurality of main ratchet teeth 2261 of the main ratchet rack 226 is rotationally misaligned, and the rotational misalignment angle is the angle between two adjacent main ratchet teeth 2261 divided by the main ratchet rack 226 and the auxiliary ratchet rack 226 The total angle of the ratchet bar 227, that is, the angle of the above-mentioned rotational misalignment in the preferred embodiment is the angle between two adjacent main ratchet teeth 2261 divided by two. Corresponding to the position between the main ratchet rack 226 and the auxiliary ratchet rack 227, a reverse ratchet tooth extending in the arc-shaped direction with the shaft hole 213 as the center is formed on the outer edge of the extension plate 225 in the middle Bar 228, the backstop direction of the reverse ratchet rack 228 tooth profile is opposite to the backstop direction of the main ratchet rack 226 tooth profile, and the extension range of the reverse ratchet rack 228 up and down is shorter than the The extent to which the main ratchet rack 226 extends upward and downward.

The tooth clamping structure 30 includes a main clamping tooth block 31 and a secondary clamping tooth block 32, wherein the main clamping tooth block 31 is provided with a main collar 311, and the main collar 311 is rotatably sleeved on the central shaft 16, and In accordance with the shape of the three top blocks 15, three bottom blocks 312 are formed on the opposite side of the main collar 311 in a circumferential and equally spaced arrangement. Each bottom block 312 forms a connected inclined surface 3121 and a bottom At the end 3122, each inclined surface 3121 is matched with each climbing surface 151, and each bottom end 3122 is abutted against the flat surface 142. When the main clamping tooth block 31 rotates toward the inclined surface 3121 of each matching top block 15, the bottom The inclined surface 3121 of the block 312 climbs up the matching climbing surfaces 151 to move the position of the main clamping tooth block 31 to the right. There is a gap between each bottom block 312 and the other top block 15 on the opposite side of the aforementioned rotation direction. The main ratchet rack 226 is provided with a main locking tooth 313 on the front side of the main collar 311, a main lug 314 is provided on the rear side of the main collar 311, and a main hook hole is penetrated in the main lug 314 3141, a rotary return spring 33 is hooked between the main hook hole 3141 and the spring pin 17 located below.

The auxiliary tooth block 32 is provided with an auxiliary sleeve ring 321, and the auxiliary sleeve ring 321 is rotatably sleeved on the part of the central shaft 16 located outside the main tooth block 31, and cooperates with the auxiliary ratchet rack 227 in the auxiliary sleeve A pair of locking teeth 322 is protrudingly arranged on the front side of the ring 321, a pair of lugs 323 are arranged on the rear side of the sub-ring 321, and a pair of hook holes 3231 are penetrated in the pair of lugs 323, and the pair of hook holes 3231 and Another rotation return spring 33 is hooked between another spring pin 17 located above. A pressure spring 34 is sleeved on the part of the central shaft 16 located outside the auxiliary tooth block 32, the right end of the pressure spring 34 abuts against the right inner surface of the housing 10, and the left end of the pressure spring 34 abuts the auxiliary The tooth clamping block 32 drives the auxiliary clamping tooth block 32 to move closer to the main clamping tooth block 31, thereby driving the auxiliary clamping tooth block 32 and the main clamping tooth block 31 to reset in the direction of the clamping block seat 14.

When the present invention is used, please refer to the preferred embodiment shown in FIGS. 4 to 6. When the user holds the handle 11 and presses the pressing handle 21 of the trigger 20 to rotate in the forward direction, the hook at the top of the trigger 20 The rod 224 pivots and pushes the driving seat 41 of the clip applying unit 40 forward. The main ratchet rack 226 and the auxiliary ratchet rack 227 will also rotate in the forward direction as the pressing handle 21 is pressed. The main tooth 313 of the main tooth block 31 will unidirectionally mesh with the main ratchet rack 226, and the auxiliary tooth 322 of the auxiliary tooth block 32 will also unidirectionally mesh with the auxiliary ratchet rack 227, so that the When the pressing handle 21 is being pressed, even if it is released halfway, it cannot rotate in the reverse direction and achieve a backstop effect.

In addition, because the positions of the auxiliary ratchet teeth 2271 of the auxiliary ratchet rack 227 and the main ratchet teeth 2261 of the main ratchet rack 226 are rotationally misaligned, and the angle of rotational dislocation is between two adjacent main ratchet teeth 2261 The angle is half of the angle, so when the pressing handle 21 is pressed, the main tooth block 31 and the auxiliary tooth block 32 will alternately mesh with the main ratchet teeth 2261 and the auxiliary ratchet teeth 2271 to make the pressing The minimum check angle of the handle 21 being pressed and rotated in the forward direction is reduced to only half of the minimum check angle of the main ratchet rack 226 and the main locking tooth block 31, so that the hook rod 224 can be reduced to push the drive forward. The advancing back gap of the seat 41 reduces the extent that the jaw 42 at the front end of the clip applying unit 40 is slightly opened due to the back gap when the pressing handle 21 is released halfway through the pressing process.

After the pressing handle 21 is pressed to the end, the main tooth block 31 and the auxiliary tooth block 32 are separated from the main ratchet rack 226 and the auxiliary ratchet rack 227, respectively. Please refer to FIGS. 7 and 8, and then As long as the pressing handle 21 is released, the retreating force of the driving seat 41 will push the hook rod 224 to rotate the trigger 20 in the reverse direction. During the reverse rotation, the bottom edge of the main ratchet rack 226 will be reversed. The main tooth block 31 rotates. Originally, the main tooth block 31 and the main ratchet rack 226 are located on the same plane. When the main tooth block 31 is rotated in the reverse direction, the inclined surfaces 3121 slide along the climbing surfaces 151 and gradually move to the right. When each bottom end 3122 of the main tooth block 31 moves to each top end 152, the main tooth 313 will jump out of the plane where the main ratchet rack 226 is located, so it will not mesh with the main ratchet rack 226. The auxiliary tooth 322 will also be pushed laterally by the main tooth block 31 to jump out of the plane where the auxiliary ratchet rack 227 is located. In the foregoing process, the amplitude of the trigger 20 rotation is small, which can reduce the time when the trigger 20 is released. The bottom edge of the main ratchet rack 226 reverses the idle stroke range of the main tooth block 31 to make the backstop structure more compact.

As shown in Figures 8 and 9, when the main clamping tooth 313 jumps out of the plane where the main ratchet rack 226 is located, and the auxiliary clamping tooth 322 also jumps out of the plane where the auxiliary ratchet rack 227 is located, the trigger In the process of continuing the reverse rotation of 20, the main clamping tooth 313 of the main clamping tooth block 31 is unidirectionally meshed with the reverse ratchet 228 to achieve the effect of preventing the reverse rotation when the trigger 20 is released, and finally When the trigger 20 returns to the original position and the main tooth 313 has also been disengaged from the reverse ratchet rack 228, the pressing spring 34 drives the pressing spring 34 and the main tooth block 31 to move to the left and return to the original position. At this time, the two rotating return springs 33 also pull the main tooth block 31 and the auxiliary tooth block 32 to rotate and return to their original positions, respectively.

In addition to the foregoing preferred embodiment of the present invention, only one secondary ratchet rack 227 is provided on the outer edge of the extension portion D to cooperate with the secondary tooth block 32, and another side-by-side ratchet rack 227 may also be provided on the outer edge of the extension portion D. The auxiliary ratchet rack 227 is located on the right side of the original auxiliary ratchet rack 227 and is spaced from the original auxiliary ratchet rack 227. The main ratchet rack 226 and the two auxiliary ratchet racks 227 are rotated and misaligned one after another. The angle of misalignment is the angle between two adjacent main ratchet teeth 2261 divided by the total angle of the main ratchet rack 226 and the two auxiliary ratchet racks 227, that is, the angle between two adjacent main ratchet teeth 2261 divided by Take three angles. At this time, in conjunction with the second auxiliary ratchet rack 227, an auxiliary clamping tooth block 32 that can be reset after rotation is provided against the outer side of the auxiliary clamping tooth block 32. The auxiliary clamping tooth block 32 is also subjected to the pressing spring 34. Drive to reset in the direction of the clamping block seat 14. When in use, the additional auxiliary clamping tooth block 32 is used to unidirectionally engage the second auxiliary ratchet 227. This arrangement can make the pressing handle 21 rotate in a forward direction under pressure. The minimum backstop angle is reduced to only one third of the minimum backstop angle between the main ratchet rack 226 and the main locking tooth block 31, and the hook rod 224 is further reduced to push the drive seat 41 forward. Backlash.

In addition to the foregoing preferred embodiment of the present invention, the trigger 20 is provided with an auxiliary ratchet rack 227 to cooperate with the auxiliary clamping tooth block 32, and the auxiliary ratchet rack 227, the reverse ratchet rack 228 and the auxiliary ratchet block 32 may also not be provided. The auxiliary tooth block 32, in this way, only the main ratchet rack 226 cooperates with the main tooth block 31 to achieve a unidirectional backstop effect. The same structural change can still reduce the main ratchet when the trigger 20 is released. The bottom edge of the bar 226 reversely moves the idle stroke range of the main tooth block 31, which can also make the backstop structure more compact.

The foregoing descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of rights claimed by the present invention. All other equivalent changes or modifications completed without departing from the spirit disclosed by the present invention should be included in the present invention. Within the scope of patent application.

10: Shell 11: Grip 111: Trigger Opening 12: body 13: Trigger pivot 131: round tube 132: Hinge slot 133: Hinge 14: card block seat 141: bottom bracket jack 142: Straight Face 15: top block 151: Climbing Surface 152: top 16: bottom axis 17: Spring latch 20: trigger 21: pressure handle 211: Pivot 212: Metal plate slot 213: Shaft hole 2131: Counterbore 22: sheet metal parts 221: Side Panel 222: Middle Board 223: Shaft perforation 224: Hook Rod 225: Extension board 226: main ratchet rack 2261: Primary ratchet 227: secondary ratchet rack 2271: secondary ratchet 228: reverse ratchet 30: Card tooth structure 31: Main card tooth block 311: Main Ring 312: bottom block 3121: Incline 3122: bottom 313: main card tooth 314: main lug 3141: Main hook hole 32: Vice card tooth block 321: Sub-ring 322: secondary card tooth 323: Auxiliary Lugs 3231: Secondary hook hole 33: Rotating return spring 34: Pressure spring 40: Clipping unit 41: Drive seat 411: drive block 42: pliers mouth A: Left half shell B: Right half shell C: Driver D: Extension

Fig. 1 is a perspective view of a right half-shell disassembled in a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Fig. 3 is an enlarged and exploded view of the clamping gear structure of the preferred embodiment of the present invention. Figure 4 is a side view of a preferred embodiment of the present invention. Figure 5 is a bottom view of the preferred embodiment of the present invention. Fig. 6 is a schematic side view of the action of pressing the trigger in the preferred embodiment of the present invention. Fig. 7 is a schematic side view of the action of releasing the trigger after pressing to the bottom of the preferred embodiment of the present invention. Fig. 8 is a schematic diagram of the bottom view action of releasing the trigger after pressing to the bottom of the preferred embodiment of the present invention. Fig. 9 is a schematic side view of the action of pressing the trigger in the preferred embodiment of the present invention.

10: Shell

20: trigger

30: Card tooth structure

40: Clipping unit

42: pliers mouth

A: Left half shell

B: Right half shell

Claims (5)

A trigger three-dimensional ratchet backstop structure, the structure includes: A housing, the housing is provided with a handle, a trigger opening is formed in front of the top side of the handle, a trigger pivotal part is formed in the housing in cooperation with the trigger opening, and is formed on one of the left and right inner sides of the housing A card block seat, the card block seat is a horizontal column and a circular flat surface is formed on the end surface of the free end, and more than one top block is formed on the flat surface in a surrounding and spaced arrangement. A connected climbing surface and a top are formed, and a central axis is arranged in the center of the block seat; A trigger is provided with a pressing handle, a pivotal part is formed on the top of the pressing handle, the pivotal part penetrates the trigger opening and is pivotally connected to the trigger pivotal part, and a driving member extends from the pivotal part, An extension portion protrudes from the pivotal portion toward the direction of the block seat. A main ratchet rack is provided on the outer edge of the extension portion. The main ratchet rack includes a plurality of centers arranged in a circle with the pivotal portion as the center. Curved main ratchet; and A clamping tooth structure, including a main clamping tooth block, the main clamping tooth block is provided with a main collar, the main collar is rotatably sleeved on the central shaft, with more than one top block, in the main collar with The surrounding and spaced arrangement forms more than one bottom block, each bottom block forms a connected inclined surface and a bottom end, and each inclined surface matches each climbing surface, and each bottom end abuts against the flat surface to match the main spine The rack is provided with a main clamping tooth protruding around the main collar, a rotation return spring is combined between the main clamping tooth block and the housing, and a pressure spring is sleeved on the outside of the central shaft, and the clamping spring drives the The main tooth block is reset to the direction of the block seat. For example, the trigger three-dimensional ratchet backstop structure of claim 1, wherein more than one secondary ratchet rack is arranged side by side on the outer edge of the extension part and the main ratchet rack, and the main ratchet rack is closest to the main ratchet rack. There is a gap between the secondary ratchet racks of the ratchet rack, and there is also a gap between the two adjacent pairs of ratchet racks. Each of the secondary ratchet racks includes a plurality of ratchet racks arranged in a circle centered on the pivot portion. Arc-shaped secondary ratchets, each secondary ratchet has the same shape as each primary ratchet, and the primary ratchet rack and the one or more secondary ratchet racks are rotated and misaligned successively, respectively, and the angle of the successive rotation and misalignment is phase The angle between two adjacent main ratchets divided by the total angle of the main ratchet rack and the one or more auxiliary ratchet racks; in conjunction with more than one auxiliary ratchet racks, the clamping tooth structure is provided with more than one A secondary tooth block, each secondary tooth block is provided with a secondary collar, the one or more secondary tooth blocks are rotatably sleeved on the part of the central shaft located outside the main tooth block with each secondary collar, A pair of clamping teeth is protruded around each auxiliary ring in cooperation with each of the auxiliary ratchet racks, and another rotary return spring is respectively combined between each auxiliary clamping tooth block and the housing. One end of the pressing spring The auxiliary tooth block abuts on the outermost side, and the other end abuts against the inner side of the housing, so that the pressing spring drives the auxiliary tooth blocks and the main tooth block to reset in the direction of the block seat. For example, the trigger three-dimensional ratchet backstop structure of claim 2, wherein the corresponding position between the main ratchet rack and the auxiliary ratchet rack closest to the main ratchet rack is formed on the outer edge of the extension A reverse ratchet rack extending in the arc-shaped direction, the direction in which the reverse ratchet rack clamps the main teeth is opposite to the direction of the main ratchet rack. For example, the trigger three-dimensional ratchet check structure of claim 2 or 3, wherein the main locking tooth block and the one or more auxiliary locking tooth blocks are matched, two or more spring pins are fixed in the housing, and the A main lug is provided around the main collar of the main tooth block, a main hook hole is penetrated in the main lug, and a pair of lugs are respectively provided around the auxiliary collar of each auxiliary tooth block , A pair of hook holes are pierced in each of the auxiliary lugs, one of the two or more rotary return springs is hooked on one of the spring pins and the main hook hole at both ends, and the other rotary return springs are each The two ends are respectively hooked on the other spring pin and each auxiliary hook hole. Such as the trigger three-dimensional ratchet backstop structure of any one of claims 1 to 3, wherein the trigger pivot part is formed by forming two circular tubes on the left and right inner sides of the housing, and the two circular tubes are respectively formed A rotating shaft slot, a rotating shaft is inserted between the two rotating shaft slots, the block seat is located behind the trigger pivot part; the pressing handle is a long plastic handle, and a downwardly extending handle is provided at the top of the pressing handle In the metal plate slot, a shaft hole is transversely pierced in the pivot part, two ends of the shaft hole respectively form a circular counterbore on both sides of the pivot part, the shaft hole and the metal The plate grooves communicate, a metal plate is inserted and fixed in the metal plate slot, a shaft hole communicating with the shaft hole is penetrated in the metal plate, and the driving member is formed by the top end of the metal plate. Extending upwards, the extension part is formed by extending backwards from the top of the metal plate; the two round tubes are inserted into two counterbores, and the rotating shaft pivots through the shaft hole and the shaft perforation.

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