CN102848330A - Holding forceps with two handles and six special claws - Google Patents
Holding forceps with two handles and six special claws Download PDFInfo
- Publication number
- CN102848330A CN102848330A CN2012102357758A CN201210235775A CN102848330A CN 102848330 A CN102848330 A CN 102848330A CN 2012102357758 A CN2012102357758 A CN 2012102357758A CN 201210235775 A CN201210235775 A CN 201210235775A CN 102848330 A CN102848330 A CN 102848330A
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- China
- Prior art keywords
- hole
- pin
- connecting rod
- fixed
- pawl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000000078 claw Anatomy 0.000 title abstract 5
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 208000004141 microcephaly Diseases 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 4
- 239000004579 marble Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
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Abstract
The invention discloses holding forceps with two handles and six special claws. The holding forceps comprise a housing and an operating control component; the two ends of a first cylindrical pin are fixed in the boss hole of a hollow handle; the long slotted hole of a force application rod is moved by swinging within a narrow range and moved from left to right relative to the first cylindrical pin; force applied on a corrugated handle is connected with the cylindrical forked pin hole of a vertical cylinder through an oblate hole and a second cylindrical pin in an articulated manner; and under the restoring action of a conical spring, the vertical cylinder and a distribution disc are moved from top to bottom along the inner hole of a round pipe. Particularly, the outer circle of the distribution disc is symmetrically provided with six distribution pin bases; the pin base holes of the distribution pin bases are connected with a connecting rod forked big hole of a reversely H-shaped connecting rod through a third cylindrical pin in an articulated manner; a connecting rod forked small hole is connected with a circular claw connecting rod hole through a fourth cylindrical pin in an articulated manner; a circular claw support hole is connected with a suspension pin hole through a fifth cylindrical pin in an articulated manner; and six circular claws which are symmetrically arranged are controlled flexibly and swung synchronously, so that a smooth fragile product can be taken out from a high-temperature environment by two hands.
Description
Technical field
The invention belongs to the extraordinary pliers in life, the work, be used for clamping high temperature or the smooth object such as frangible, the particularly special six pawl gripper clamps of a kind of double handle.
Background technology
In the daily life, people often will take out the smooth object such as bowl dish from the high temperature environment such as food steamer.In the industrial processes, some special dimensions must take out smooth fragile article from hot environment, and the clamping devices such as known traditional pliers can't reach desirable effect, and people fail to find a kind of efficiently convenient, safe and reliable pliers always.
Summary of the invention
The purpose of this invention is to provide a kind of safe and reliable clamper that takes out smooth breakables from hot environment, to achieve these goals, the present invention adopts following technical solution:
The special six pawl gripper clamps of a kind of double handle, comprise shell and operation control assembly, as improvement: there is the handle perforate hollow grip handle bilateral below of shell, two outer end inner surfaces of hollow grip handle respectively have the pair of projections hole, hollow grip handle center position below is connecting the pipe section, pipe section lower end is being communicated with plane on the disk of controlling disk, the inner surface on plane is provided with on the spring fixed circle and six suspended bearer pin are arranged symmetrically in the fixed circle outside on the spring on the disk, and it is corresponding with described suspended bearer pin that the disk lower plane of control disk also is provided with six rectangle openings; In the operation control assembly: below, force application rod middle part has the downward gap of ripple handle to pass through described handle perforate, the two ends of the first straight pin are fixed in the described boss hole, the long slot bore of force application rod is between a pair of described boss hole, and relative the first straight pin of described long slot bore is made by a small margin rotation campaign and move left and right; The two ends of the second straight pin are fixed in the cylinder jag pin hole of right circular cylinder, and the flat round hole of force application rod is positioned in the middle of the described cylinder jag pin hole; Relative the second straight pin of described flat round hole is done by a small margin rotation campaign; Decide to enclose the distribution disk of ining succession below the right circular cylinder under spring, distribute to be arranged symmetrically with six distribution runners on the disk cylindrical, in the volute spring major part was fixed on and decides on the spring to enclose, the volute spring microcephaly was fixed on and decides outside the circle under the spring; The two ends of three cylindrical pin are fixed in the connecting rod jag macropore of I shape connecting rod; Described distribution runners is positioned in the middle of the described connecting rod jag macropore, distributes the relative three cylindrical pin in runners hole of runners to do by a small margin rotation campaign; The two ends of the 4th straight pin are fixed in the connecting rod jag aperture of I shape connecting rod, and the arc pawl tie rod holes of arc pawl is positioned in the middle of the described connecting rod jag aperture; Relative the 4th straight pin of described arc pawl tie rod holes is done by a small margin rotation campaign; The two ends of the 5th straight pin are fixed in the suspension pin hole of six suspended bearer pin; The arc pawl bearing hole of described arc pawl is positioned in the middle of the described suspension pin hole; Relative the 5th straight pin of described arc pawl bearing hole is done by a small margin rotation campaign, and described rectangle opening is passed through in the downward gap of described arc pawl.
As further improvement: the large bore dia of described connecting rod jag is between 3 to 15 millimeters; Described connecting rod jag hole diameter is between 2 to 12 millimeters; Between 10 to 50 millimeters of the spacings of described connecting rod jag macropore and described connecting rod jag aperture.
As further improvement: described arc pawl lower end also is connected with rigidity level curved arc section, rigidity level curved arc section inboard is fixed with elasticity curved arc pad, elasticity curved arc pad is inboard to also have curved arc pad groove, and the spacing of described arc pawl tie rod holes and described arc pawl bearing hole is between 8 to 40 millimeters; And the spacing of described arc pawl tie rod holes and described arc pawl bearing hole is between 8 to 40 millimeters; And the material of described elasticity curved arc pad is high-temperature-resisting silicon rubber, and the material Specifeca tion speeification is: every cubic centimetre of density is between 1.97 to 1.25 grams; Shore hardness A is between 58 to 62 degree; Between the tensile strength 8.9 to 9.1MPa.
The invention has the beneficial effects as follows: the two ends of the first straight pin are fixed in the boss hole of hollow grip handle, and relative the first straight pin of the long slot bore of force application rod is made by a small margin rotation campaign and move left and right; The power that acts on the ripple handle,, drives right circular cylinder and distributes disk to move up and down along the pipe endoporus in conjunction with the volute spring reset response through the cylinder jag pin hole of the second straight pin and right circular cylinder chain connection by flat round hole.Particularly adopt to distribute six distribution runners that are arranged symmetrically with are arranged on the disk cylindrical, the connecting rod jag macropore that distributes the runners hole of runners and I shape connecting rod is with three cylindrical pin chain connection, connecting rod jag aperture and arc pawl tie rod holes are with the 4th straight pin chain connection, between the suspension pin hole of arc pawl bearing hole and suspended bearer pin with the 5th straight pin chain connection, controlling flexibly and be arranged symmetrically with six arc pawls and swing synchronously, realizing that bimanualness takes out smooth fragile article from hot environment.
Rigidity level curved arc section inboard is fixed with high temperature resistant elasticity curved arc pad can avoid the gripped object external surface of damaging, and elasticity curved arc pad is inboard to also have curved arc pad groove can avoid smooth object to skid, and operation safe is reliable.The present invention is novel, manufacturing is simple, and simple operation possesses popularizing value.
Description of drawings
Top view when accompanying drawing 1 is bimanualness of the present invention;
Accompanying drawing 2 is the A-A cutaway views among Fig. 3;
Accompanying drawing 3 is the B-B cutaway views among Fig. 2;
Work constructed profile when accompanying drawing 4 is clamping glass ball 80 of the present invention;
Accompanying drawing 5 is profiles of shell 10;
Accompanying drawing 6 is upward views of Fig. 5 shell 10;
Accompanying drawing 7 is part drawings of force application rod 30 among Fig. 4;
Accompanying drawing 8 be among Fig. 4 right circular cylinder 44 together with the component drawings that distributes disk 40 grades;
Accompanying drawing 9 is stereograms of I shape connecting rod 60 among Fig. 4;
Accompanying drawing 10 is stereograms of arc pawl 70 among Fig. 4.
The specific embodiment
The invention will be further described in conjunction with the accompanying drawings and embodiments:
At Fig. 2, among Fig. 3, the special six pawl gripper clamps of a kind of double handle, comprise shell 10 and operation control assembly, as improvement: there is handle perforate 13 the hollow grip handle 11 bilaterals below of shell 10, two outer end inner surfaces of hollow grip handle 11 respectively have pair of projections hole 91, hollow grip handle 11 center positions below is connecting pipe section 14, pipe section 14 lower ends are being communicated with plane 16 on the disk of controlling disk 12, the inner surface on plane 16 is provided with and surely encloses 15 and six suspended bearer pin 97 on the spring and be arranged symmetrically in and surely enclose 15 outsides on the spring on the disk, and it is corresponding with described suspended bearer pin 97 that the disk lower plane 18 of control disk 12 also is provided with six rectangle openings 17; In the operation control assembly: below, force application rod 30 middle parts has ripple handle 33 downward gaps to pass through described handle perforate 13, the two ends of the first straight pin 21 are fixed in the described boss hole 91, the long slot bore 31 of force application rod 30 is between a pair of described boss hole 91, and described long slot bore 31 relative the first straight pins 21 are made by a small margin rotation campaign and move left and right; The two ends of the second straight pin 22 are fixed in the cylinder jag pin hole 42 of right circular cylinder 44, and the flat round hole 32 of force application rod 30 is positioned in the middle of the described cylinder jag pin hole 42; Described flat round hole 32 relative the second straight pins 22 are done by a small margin rotation campaign; Right circular cylinder 44 belows are surely enclosed 45 and are ined succession and distribute disk 40 under spring, distribute to be arranged symmetrically with six on disk 40 cylindricals and to distribute runners 46, and volute spring 50 major parts are fixed on and surely enclose on the spring in 15, and volute spring 50 microcephalies are fixed under the spring and surely enclose outside 45; The two ends of three cylindrical pin 23 are fixed in the connecting rod jag macropore 63 of I shape connecting rod 60; Described distribution runners 46 is positioned in the middle of the described connecting rod jag macropore 63, distributes the runners hole 43 relative three cylindrical pins 23 of runners 46 to do by a small margin rotation campaign; The two ends of the 4th straight pin 24 are fixed in the connecting rod jag aperture 64 of I shape connecting rod 60, and the arc pawl tie rod holes 74 of arc pawl 70 is positioned in the middle of the described connecting rod jag aperture 64; Described arc pawl tie rod holes 74 relative the 4th straight pins 24 are done by a small margin rotation campaign; The two ends of the 5th straight pin 25 are fixed in the suspension pin hole 95 of six suspended bearer pin 97; The arc pawl bearing hole 75 of described arc pawl 70 is positioned in the middle of the described suspension pin hole 95; Described arc pawl bearing hole 75 relative the 5th straight pins 25 are done by a small margin rotation campaign, and described rectangle opening 17 is passed through in described arc pawl 70 downward gaps.
As further improvement: described connecting rod jag macropore 63 diameters are between 3 to 15 millimeters; Described connecting rod jag aperture 64 diameters are between 2 to 12 millimeters; Between 10 to 50 millimeters of the spacings of described connecting rod jag macropore 63 and described connecting rod jag aperture 64.
As further improvement: described arc pawl 70 lower ends also are connected with rigidity level curved arc section 71, rigidity level curved arc section 71 inboards are fixed with elasticity curved arc pad 72, elasticity curved arc pad 72 inboard in addition curved arc pad grooves 73, and the spacing of described arc pawl tie rod holes 74 and described arc pawl bearing hole 75 is between 8 to 40 millimeters; And the spacing of described arc pawl tie rod holes 74 and described arc pawl bearing hole 75 is between 8 to 40 millimeters; And the material of described elasticity curved arc pad 72 is high-temperature-resisting silicon rubber, and the material Specifeca tion speeification is: every cubic centimetre of density is between 1.97 to 1.25 grams; Shore hardness A is between 58 to 62 degree; Between the tensile strength 8.9 to 9.1MPa.
Among Fig. 9, embodiment selects: connecting rod jag macropore 63 diameters are 8 millimeters, and connecting rod jag aperture 64 diameters are 6 millimeters, and described connecting rod jag macropore 63 is 30 millimeters with the spacing of described connecting rod jag aperture 64.
Among Figure 10, embodiment selects: arc pawl tie rod holes 74 is 24 millimeters with the spacing of described arc pawl bearing hole 75; The material Specifeca tion speeification of the elasticity curved arc pad 72 that high-temperature-resisting silicon rubber is made is: every cubic centimetre of density is 1.2 grams; Shore hardness A is 60 degree; Tensile strength is 9MPa.
In conjunction with Fig. 1, Fig. 4, operation principle is as follows: both hands 99 are controlled hollow grip handle 11, when finger is not firmly oppressed ripple handle 33, volute spring 50 is pushing away distribution disk 40 and is moving downward, be positioned to distribute six distribution runners 46 that are arranged symmetrically with are arranged on disk 40 cylindricals, distribute the runners hole 43 of runners 46 by arc pawl tie rod holes 74 usefulness four straight pin 24 chain connections of I shape connecting rod 60 with arc pawl 70, cooperate suspension pin hole 95 usefulness the 5th straight pin, 25 fixing points of 97 pairs of arc pawls 70 of suspended bearer pin hinged, control is arranged symmetrically with six arc pawls 70 and outwards swings synchronously.Joining disk 40 surely encloses 45 and also hauls right circular cylinder 44 and move downward under spring.Distribute the runners hole 43 of runners 46 to move downward with 63 hinged three cylindrical pins 23 of connecting rod jag macropore, drivening rod jag aperture 64 moves downward with arc pawl tie rod holes 74 residing the 4th straight pin 24 chain connections, arc pawl bearing hole 75 usefulness the 5th straight pin 25 fixing point chain connections that cooperate the 95 pairs of arc pawls 70 in suspension pin hole of suspended bearer pin 97, control is arranged symmetrically with six arc pawls 70 and does take the 5th straight pin 25 as the strong point outwards to swing synchronously simple operation;
When finger was firmly held ripple handle 33 with a firm grip, take the first straight pin 21 as fulcrum, force application rod 30 drove the second straight pin 22 and moves upward, and the horizontal position the when effect of long slot bore 31 is 30 swing of compensation force application rod moves.Cylindrical and pipe endoporus 94 by right circular cylinder 44 are slidingly matched, and drive the backward upper motion of bounce that distributes disk 40 to overcome volute spring 50.Distribute runners hole 35 and 63 hinged three cylindrical pins 23 of connecting rod jag macropore to move upward, drivening rod jag aperture 64 moves upward with 74 hinged the 4th straight pin 24 chain connections of arc pawl tie rod holes, arc pawl bearing hole 75 usefulness the 5th straight pin 25 fixing point chain connections that cooperate the 95 pairs of arc pawls 70 in suspension pin hole of suspended bearer pin 97, control is arranged symmetrically with six arc pawls 70 and does take the 5th straight pin 25 as the strong point inwardly to swing synchronously, glass marble 80 is embraced in clamping, has realized the smooth breakables in the double handle operation clamping hot environment.
The two ends of the first straight pin 21 are fixed in the boss hole 91 of hollow grip handle 11, and long slot bore 31 relative first straight pins 21 of force application rod 30 are made by a small margin rotation campaign and move left and right; Act on the power of ripple handle 33 by cylinder jag pin hole 42 chain connections of flat round hole 32 through the second straight pin 22 and right circular cylinder 44, in conjunction with volute spring 50 reset responses, drive right circular cylinder 44 and distribute disk 40 to move up and down along pipe endoporus 94.Particularly adopt to distribute six distribution runners 46 that are arranged symmetrically with are arranged on disk 40 cylindricals, distribute the runners hole 43 of runners 46 and connecting rod jag macropore 63 usefulness three cylindrical pins 23 chain connections of I shape connecting rod 60, connecting rod jag aperture 64 and arc pawl tie rod holes 74 usefulness the 4th straight pin 24 chain connections, between the suspension pin hole 95 of arc pawl bearing hole 75 and suspended bearer pin 97 with the 5th straight pin 25 chain connections, controlling flexibly and be arranged symmetrically with six arc pawls 70 and swing synchronously, realizing that bimanualness takes out smooth fragile article glass marble 80 from hot environment.
Rigidity level curved arc section 71 inboards are fixed with elasticity curved arc pad 72, and elasticity curved arc pad 72 inboard in addition curved arc pad grooves 73 can be avoided damaging and be held glass marble 80 outer surfaces, also are not easy landing, and handling safety is reliable.
Claims (3)
1. special six pawl gripper clamps of double handle, comprise shell (10) and operation control assembly, it is characterized in that: there is handle perforate (13) hollow grip handle (11) the bilateral below of shell (10), two outer end inner surfaces of hollow grip handle (11) respectively have pair of projections hole (91), hollow grip handle (11) center position below is connecting pipe section (14), pipe section (14) lower end is being communicated with plane (16) on the disk of control disk (12), the inner surface on plane on the disk (16) is provided with on the spring fixed circle (15) and six suspended bearer pin (97) are arranged symmetrically in fixed circle (15) outside on the spring, and it is corresponding with described suspended bearer pin (97) that the disk lower plane (18) of control disk (12) also is provided with six rectangle openings (17); In the operation control assembly: below, force application rod (30) middle part has ripple handle (33) to pass through described handle perforate (13) in the gap downwards, the two ends of the first straight pin (21) are fixed in the described boss hole (91), the long slot bore (31) of force application rod (30) is positioned between a pair of described boss hole (91), and relative the first straight pin of described long slot bore (31) (21) is made by a small margin rotation campaign and move left and right; The two ends of the second straight pin (22) are fixed in the cylinder jag pin hole (42) of right circular cylinder (44), and the flat round hole (32) of force application rod (30) is positioned in the middle of the described cylinder jag pin hole (42); Relative the second straight pin of described flat round hole (32) (22) is done by a small margin rotation campaign; Right circular cylinder (44) below fixed circle (45) under spring is ined succession and is distributed disk (40), distribute and be arranged symmetrically with six distribution runners (46) on disk (40) cylindrical, volute spring (50) major part is fixed on fixed the circle in (15) on the spring, and volute spring (50) microcephaly is fixed on fixed the circle outside (45) under the spring; The two ends of three cylindrical pin (23) are fixed in the connecting rod jag macropore (63) of I shape connecting rod (60); Described distribution runners (46) is positioned in the middle of the described connecting rod jag macropore (63), distributes runners hole (43) the relative three cylindrical pins (23) of runners (46) to do by a small margin rotation campaign; The two ends of the 4th straight pin (24) are fixed in the connecting rod jag aperture (64) of I shape connecting rod (60), and the arc pawl tie rod holes (74) of arc pawl (70) is positioned in the middle of the described connecting rod jag aperture (64); Relative the 4th straight pin of described arc pawl tie rod holes (74) (24) is done by a small margin rotation campaign; The two ends of the 5th straight pin (25) are fixed in the suspension pin hole (95) of six suspended bearer pin (97); The arc pawl bearing hole (75) of described arc pawl (70) is positioned in the middle of the described suspension pin hole (95); Relative the 5th straight pin of described arc pawl bearing hole (75) (25) is done by a small margin rotation campaign, and described arc pawl (70) passes through described rectangle opening (17) in the gap downwards.
2. special six pawl gripper clamps of a kind of double handle according to claim 1, it is characterized in that: described connecting rod jag macropore (63) diameter is between 3 to 15 millimeters; Described connecting rod jag aperture (64) diameter is between 2 to 12 millimeters; Between 10 to 50 millimeters of the spacings of described connecting rod jag macropore (63) and described connecting rod jag aperture (64).
3. special six pawl gripper clamps of a kind of double handle according to claim 1, it is characterized in that: described arc pawl (70) lower end also is connected with rigidity level curved arc section (71), rigidity level curved arc section (71) inboard is fixed with elasticity curved arc pad (72), the inboard in addition curved arc pad groove (73) of elasticity curved arc pad (72); And the spacing of described arc pawl tie rod holes (74) and described arc pawl bearing hole (75) is between 8 to 40 millimeters; And the material of described elasticity curved arc pad (72) is high-temperature-resisting silicon rubber, and the material Specifeca tion speeification is: every cubic centimetre of density is between 1.97 to 1.25 grams; Shore hardness A is between 58 to 62 degree; Between the tensile strength 8.9 to 9.1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235775.8A CN102848330B (en) | 2012-06-29 | 2012-06-29 | Holding forceps with two handles and six special claws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235775.8A CN102848330B (en) | 2012-06-29 | 2012-06-29 | Holding forceps with two handles and six special claws |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102848330A true CN102848330A (en) | 2013-01-02 |
| CN102848330B CN102848330B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210235775.8A Active CN102848330B (en) | 2012-06-29 | 2012-06-29 | Holding forceps with two handles and six special claws |
Country Status (1)
| Country | Link |
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| CN (1) | CN102848330B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441746A (en) * | 1982-01-04 | 1984-04-10 | Corboy Jr Edward D | Tool for retrieving out-of-reach objects |
| CN2056341U (en) * | 1989-08-26 | 1990-04-25 | 王阳春 | Bowl carrier |
| SU1718789A1 (en) * | 1989-08-22 | 1992-03-15 | Научно-исследовательский институт средств автоматизации | Grip for glass jars |
| CN200951034Y (en) * | 2006-10-11 | 2007-09-26 | 洪道生 | Multipurpose convenient clamp for basin, bowl and plate container |
| CN102357894A (en) * | 2011-09-22 | 2012-02-22 | 严义科 | Three-jaw manipulator measuring bearing diameter |
-
2012
- 2012-06-29 CN CN201210235775.8A patent/CN102848330B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441746A (en) * | 1982-01-04 | 1984-04-10 | Corboy Jr Edward D | Tool for retrieving out-of-reach objects |
| SU1718789A1 (en) * | 1989-08-22 | 1992-03-15 | Научно-исследовательский институт средств автоматизации | Grip for glass jars |
| CN2056341U (en) * | 1989-08-26 | 1990-04-25 | 王阳春 | Bowl carrier |
| CN200951034Y (en) * | 2006-10-11 | 2007-09-26 | 洪道生 | Multipurpose convenient clamp for basin, bowl and plate container |
| CN102357894A (en) * | 2011-09-22 | 2012-02-22 | 严义科 | Three-jaw manipulator measuring bearing diameter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102848330B (en) | 2015-04-15 |
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Owner name: WENZHOU ZHANGHENG TECHNOLOGY SERVICE CO., LTD. Free format text: FORMER OWNER: ZHANG SHENGTING Effective date: 20150310 |
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Inventor after: Ni Chuan Inventor after: Zhang Chengting Inventor before: Zhang Chengting |
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Effective date of registration: 20150310 Address after: Puzhou street Pujiang road Longwan faculty dormitory District of Wenzhou city in Zhejiang province 325000 Room 202 Applicant after: Wenzhou Zhangheng Technology Service Co., Ltd. Address before: Lucheng District of Wenzhou city Zhejiang province 325000 Lotus Street Park Lane 5, room 106, 90. Applicant before: Zhang Chengting |
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Effective date of registration: 20170628 Address after: 226500 Nanhai Road, Binhai Industrial Park, Nantong, Jiangsu, Qidong Patentee after: Qidong Sanjiang Construction Machinery Co., Ltd. Address before: Puzhou street Pujiang road Longwan faculty dormitory District of Wenzhou city in Zhejiang province 325000 Room 202 Patentee before: Wenzhou Zhangheng Technology Service Co., Ltd. |