CN214274191U - Adjustable bolt and tool box - Google Patents

Adjustable bolt and tool box Download PDF

Info

Publication number
CN214274191U
CN214274191U CN202023002821.9U CN202023002821U CN214274191U CN 214274191 U CN214274191 U CN 214274191U CN 202023002821 U CN202023002821 U CN 202023002821U CN 214274191 U CN214274191 U CN 214274191U
Authority
CN
China
Prior art keywords
thread
support
cylinder
radial direction
adjustable bolt
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.)
Expired - Fee Related
Application number
CN202023002821.9U
Other languages
Chinese (zh)
Inventor
卢歆
刘洋
柳东杰
赵佳星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun University
Original Assignee
Changchun University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changchun University filed Critical Changchun University
Priority to CN202023002821.9U priority Critical patent/CN214274191U/en
Application granted granted Critical
Publication of CN214274191U publication Critical patent/CN214274191U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The utility model discloses an adjustable bolt and a tool box, wherein, the adjustable bolt comprises a bolt body which comprises a supporting cylinder; the fixing structure comprises a plurality of thread pieces, the thread pieces are annularly arranged on the outer peripheral wall of the support column body in a surrounding manner, each thread piece extends along the length direction of the support column body, one side of each thread piece, which is far away from the support column body, is provided with a fixing thread, and the fixing thread is used for being locked with the thread of the thread hole; the adjusting structure is arranged between the supporting column body and the fixing structure and comprises a plurality of telescopic parts which are in one-to-one correspondence with the plurality of thread pieces, each telescopic part is movably telescopic along the radial direction of the supporting column body, and the two ends of each telescopic part along the telescopic direction are respectively connected with the supporting column body and the corresponding thread piece so as to drive the plurality of thread pieces to be folded or expanded along the radial direction of the supporting column body. The utility model discloses technical scheme's but the screw hole of the different bores of bolt adaptation has improved the suitability of bolt.

Description

Adjustable bolt and tool box
Technical Field
The utility model relates to a bolt fastening technical field, in particular to bolt and tool holder with adjustable.
Background
The thread diameter of traditional bolt is generally fixed, can not adjust the thread diameter of bolt according to the bore of specific screw hole to so that in industry and fitment process, often need carry the bolt of multiple thread diameter to the screw hole of different bores of adaptation, it is inconvenient in fact.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bolt with adjustable aim at the screw hole of the different bores of adaptation to improve the suitability of bolt.
In order to achieve the above object, the utility model provides a bolt with adjustable, include:
a bolt body including a support cylinder;
the fixing structure comprises a plurality of thread pieces, the thread pieces are annularly arranged on the outer peripheral wall of the supporting column body in a surrounding manner, each thread piece extends along the length direction of the supporting column body, one side of each thread piece, which is far away from the supporting column body, is provided with a fixing thread, and the fixing thread is used for being locked with a thread of a thread hole;
the adjusting structure is arranged between the supporting cylinder and the fixed structure and comprises a plurality of telescopic parts in one-to-one correspondence with the thread pieces, each telescopic part is movably telescopic in the radial direction of the supporting cylinder and is respectively connected with the supporting cylinder and the corresponding thread pieces at two ends in the telescopic direction so as to drive the thread pieces to be folded or expanded in the radial direction of the supporting cylinder.
Optionally, in the length direction of the support cylinder, the telescopic part includes first support section and second support section that articulated connection each other, the thread piece install in the articulated department of first support section and second support section, at least one free end in first support section and the second support section of the two with the support cylinder activity links to each other, with through articulated rotation between first support section and the second support section, drive the thread piece in the radial direction of support cylinder moves.
Optionally, the adjusting structure further includes an adjusting portion movably mounted on the support column, the adjusting portion is connected to a free end of one of the first support section and the second support section, so that the first support section and the second support section are driven to rotate in a hinged manner based on movement of the adjusting portion on the support column.
Optionally, the periphery wall of the support column is provided with an adjusting thread, and the adjusting part is provided with a threaded hole matched with the adjusting thread so as to be locked with the support column thread.
Optionally, adjust the structure still including the ring locate the limit baffle of support cylinder periphery wall, limit baffle's outer peripheral edge is used for supporting the articulated department of first support section and second support section to avoid arbitrary two neighbours the flight is too close to support the cylinder periphery wall and mutual interference.
Optionally, in the radial direction of the support column, the telescopic part includes a first sliding rod and a second sliding rod which are slidably connected to each other, a free end of one of the first sliding rod and the second sliding rod is connected to the support column, and a free end of the other one is connected to the thread piece, so that the thread piece is driven to move in the radial direction of the support column by the sliding movement between the first sliding rod and the second sliding rod.
Optionally, the telescopic part is a compression elastic part which elastically extends along the radial direction of the support column body, and the compression elastic part is respectively connected with the support column body and the thread piece along the two ends of elastic expansion so as to elastically drive the thread piece to move in the radial direction of the support column body.
Optionally, any two adjacent thread pieces are arranged in the same manner relative to the central angle of the support column.
Optionally, the bolt body further includes a fixing baffle fixedly disposed at an extending end of the support column, and a cross section of the fixing baffle in the radial direction of the support column is in a regular hexagon arrangement.
The utility model also provides a tool holder, including adjustable bolt, this adjustable bolt includes:
a bolt body including a support cylinder;
the fixing structure comprises a plurality of thread pieces, the thread pieces are annularly arranged on the outer peripheral wall of the supporting column body in a surrounding manner, each thread piece extends along the length direction of the supporting column body, one side of each thread piece, which is far away from the supporting column body, is provided with a fixing thread, and the fixing thread is used for being locked with a thread of a thread hole;
the adjusting structure is arranged between the supporting cylinder and the fixed structure and comprises a plurality of telescopic parts in one-to-one correspondence with the thread pieces, each telescopic part is movably telescopic in the radial direction of the supporting cylinder and is respectively connected with the supporting cylinder and the corresponding thread pieces at two ends in the telescopic direction so as to drive the thread pieces to be folded or expanded in the radial direction of the supporting cylinder.
The utility model discloses technical scheme is through in the week of support cylinder, lay a plurality of screw thread pieces that extend along this support cylinder's length direction, in order to deviate from the fixed thread and the screw hole screw thread lock of support cylinder one side through the screw thread piece and attach, and link to each other with screw thread piece and support cylinder respectively through the flexible both ends with the pars contractilis, in order based on the flexible of pars contractilis, drive the screw thread piece and draw in or expand in the radial direction of support cylinder, realize the regulation and control to the radial dimension of the annular wall of a plurality of screw thread piece formation, be favorable to the screw hole of the different bores of adaptation, improve the suitability of product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an adjustable bolt according to the present invention;
FIG. 2 is a left side view of the adjustable bolt of FIG. 1;
FIG. 3 is a right side view of the adjustable bolt of FIG. 1;
fig. 4 is a schematic structural diagram of the thread piece in fig. 1.
The reference numbers illustrate:
1. a bolt body; 11. a support column; 111. adjusting the screw thread; 12. fixing a baffle plate; 2. a fixed structure; 21. a threaded sheet; 211. fixing threads; 3. an adjustment structure; 31. a telescopic part; 311. a first support section; 312. a second support section; 32. an adjustment section; 33. limit baffle
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a bolt with adjustable.
In the embodiment of the present invention, as shown in fig. 1 to 4, the adjustable bolt includes:
a bolt body 1 including a support cylinder 11;
the fixing structure 2 comprises a plurality of thread pieces 21, the thread pieces 21 are annularly arranged on the outer peripheral wall of the support column body 11, each thread piece 21 extends along the length direction of the support column body 11, one side of each thread piece 21, which is far away from the support column body 11, is provided with a fixing thread 211, and the fixing thread 211 is used for being locked with the thread of the thread hole;
adjust structure 3, locate between support column 11 and fixed knot construct 2, include a plurality of pars contractilis 31 with a plurality of screw thread pieces 21 one-to-one, each pars contractilis 31 all stretches out and draws back along the support column 11 radial direction activity, and links to each other with support column 11 and the screw thread piece 21 that corresponds respectively along the both ends of the direction of stretching out and drawing back to drive a plurality of screw thread pieces 21 and draw in or expand in support column 11's radial direction.
It can be understood that, in the embodiment, the supporting column 11 adopts a cylindrical structural manner so as to extend into the threaded hole, and the threaded piece 21 is arranged in an arc shape in the width direction thereof so as to facilitate the attachment of the fixing thread 211 of the threaded piece 21 and the thread of the threaded hole; during the use, the flexible length of user's accessible regulation pars contractilis 31, and then adjusts the radial dimension of the annular wall that a plurality of screw thread pieces 21 formed, when the radial dimension of the annular wall that forms and the bore of screw hole fit for, locks the flexible length of pars contractilis 31, alright based on the screw thread lock between the fixed screw thread 211 of screw thread piece 21 and the screw thread of screw hole attaches, accomplishes the fixed mounting between bolt and the screw hole.
Alternatively, the central angles of any two adjacent thread pieces 21 relative to the support column 11 are the same. It can be understood that the thread pieces 21 are uniformly arranged along the circumferential direction of the support column body 11, and thus the thread pieces 21 are uniformly arranged along the circumferential direction of the thread holes, which is beneficial to improving the stability of the thread locking between the adjustable bolt and the thread hole.
Optionally, the bolt body 1 further includes a fixing baffle 12 fixedly disposed at an extending end of the support column 11, and a cross section of the fixing baffle 12 in a radial direction of the support column 11 is disposed in a regular hexagon. In this embodiment, the adjusting portion 32 is assembled on one side of the supporting column 11 close to the fixed baffle 12, and thus the adjusting portion 32 can be effectively prevented from falling off from the extending end of the supporting column 11; it should be understood that the fixing baffle 12 is used to cooperate with a tool such as a wrench to screw the threaded plate 21 into the threaded hole, and it should be noted that the design is not limited thereto, and in other embodiments, the fixing baffle 12 may have other shapes such as a cylinder, and a screw hole for assembling a screwdriver may be provided on a side of the fixing baffle 12 away from the support column 11.
The utility model discloses technical scheme is through in support cylinder 11 circumference upwards, lay a plurality of screw thread pieces 21 that extend along this support cylinder 11's length direction, in order to deviate from the fixed thread 211 and the screw hole screw thread lock of support cylinder 11 one side through screw thread piece 21 and attach, and link to each other with screw thread piece 21 and support cylinder 11 respectively through the flexible both ends with pars contractilis 31, in order to stretch out and draw back based on pars contractilis 31, drive screw thread piece 21 and draw in or expand in support cylinder 11's radial direction, realize the regulation and control to the radial dimension of the annular wall that a plurality of screw thread pieces 21 formed, be favorable to the screw hole of the different bores of adaptation, improve the suitability of product.
In an embodiment, optionally, in the length direction of the support column 11, the telescopic portion 31 includes a first support section 311 and a second support section 312 that are hinged to each other, the thread piece 21 is installed at the hinged position of the first support section 311 and the second support section 312, and the free end of at least one of the first support section 311 and the second support section 312 is movably connected to the support column 11, so as to drive the thread piece 21 to move in the radial direction of the support column 11 through the hinged rotation between the first support section 311 and the second support section 312. It can be understood that, in the length direction of the support column 11, in the process that the free ends of the first support section 311 and the second support section 312 are close to or far away from each other, the hinge angle of the hinge relative to the support column 11 is changed, and the distance between the hinge and the support column 11 is also changed, so that the distance between the thread piece 21 and the support column 11 is changed through the hinge rotation between the first support section 311 and the second support section 312, that is, the radial dimension of the annular wall formed by the thread pieces 21 is changed, and the adaptation of the adjustable bolt to the thread holes with different calibers is realized. Specifically, in this embodiment, the first supporting section 311 and the second supporting section both adopt a stainless steel cylindrical structural form, which is beneficial to improving the structural strength of the two supporting sections and prolonging the service life of the product.
Optionally, the adjusting structure 3 further includes an adjusting portion 32 movably mounted on the supporting column 11, and the adjusting portion 32 is connected to a free end of one of the first supporting section 311 and the second supporting section 312, so as to drive the hinge between the first supporting section 311 and the second supporting section 312 to rotate based on the movement of the adjusting portion 32 on the supporting column. It can be understood that the adjusting portion 32 is connected to the telescopic end of each telescopic portion 31, specifically, in this embodiment, the free end of the first supporting section 311 of each telescopic portion 31 is connected to the adjusting portion 32, so that the hinge angle of each telescopic portion 31 can be adjusted and controlled by changing the relative position relationship between the adjusting portion 32 and the supporting column 11, and of course, in other embodiments, the free end of the second supporting section 312 may be mounted on the adjusting portion 32 without limitation. Without loss of generality, in the embodiment, in order to facilitate the user to adjust the relative position between the adjusting portion 32 and the supporting column 11, an adjusting thread 111 is disposed on the outer peripheral wall of the supporting column 11, and the adjusting portion 32 is provided with a threaded hole matched with the adjusting thread 111 for being screwed and attached to the supporting column 11. It should be understood that, referring to fig. 1, the threaded connection between the adjusting portion 32 and the supporting column 11 is a flexible connection method widely used in the prior art, and has the advantages of reliable connection, convenient adjustment, etc., of course, the design is not limited thereto, and in other embodiments, the adjusting portion 32 may also be fixed to the supporting column 11 in a snap-fit manner, which is not limited thereto. Specifically, the adjusting portion 32 includes two nut structures installed on the support column 11 at intervals, and the respective free ends of the first support section 311 and the second support section 312 are respectively connected to the two nut structures, so that the user can adjust the hinge angle between the support sections and the position of the screw piece 21 on the support column 11 more flexibly.
Optionally, the adjusting structure 3 further includes a limiting baffle 33 disposed around the outer peripheral wall of the support cylinder 11, and an outer peripheral edge of the limiting baffle 33 is used for abutting against the hinge joint of the first support section 311 and the second support section 312, so as to prevent any two adjacent thread pieces 21 from being too close to the outer peripheral wall of the support cylinder 11 to interfere with each other. It can be understood that the limiting baffle 33 is annularly sleeved on the supporting column body 11 and used for abutting against the hinged position between the first supporting section 311 and the second supporting section 312 to limit the hinged angle of the limiting baffle, so that the phenomenon that the edges of the adjacent threaded sheets 21 collide with each other and are damaged due to the fact that the threaded sheets 21 are infinitely attached to the outer peripheral wall of the supporting column body 11 is avoided, and the use reliability of the product is improved. It should be noted that the design is not limited to this, and in other embodiments, the limit baffle 33 may be disposed in other shapes such as a square shape.
In another embodiment, optionally, in the radial direction of the supporting cylinder 11, the telescopic portion 31 includes a first sliding rod and a second sliding rod that are slidably connected to each other, a free end of one of the first sliding rod and the second sliding rod is connected to the supporting cylinder 11, and a free end of the other one of the first sliding rod and the second sliding rod is connected to the threaded sheet 21, so as to drive the threaded sheet 21 to move in the radial direction of the supporting cylinder 11 through the sliding movement between the first sliding rod and the second sliding rod. It can be understood that, in the radial direction of the support column 11, the first sliding rod and the second sliding rod are connected in a sliding manner to drive the threaded pieces 21 to be close to or far away from the support column 11, so that the radial size of the annular wall formed by the plurality of threaded pieces 21 is changed, and the adjustable bolt is adapted to threaded holes with different calibers. Of course, in other embodiments, the expansion portion 31 may also be a compression elastic member elastically extending along the radial direction of the support column 11, and both ends of the compression elastic member along the elastic expansion are respectively connected to the support column 11 and the thread piece 21, so as to elastically drive the thread piece 21 to move in the radial direction of the support column 11. It is understood that the expansion portion 31 is a compression spring widely used in the prior art, in other words, the compression portion is a compression spring easy to obtain, when the adjustable bolt is used, the radial size of the annular wall is matched with the caliber of the threaded hole by pre-compressing the compression spring, the support column body 11 is stretched into the threaded hole, the threaded sheet 21 is elastically propped against the hole wall of the threaded hole through the compression spring, and meanwhile, the adjustable bolt is fixedly assembled with the threaded hole based on the threaded locking between the threaded sheet 21 and the threaded hole.
The utility model discloses still provide a tool holder, this tool holder includes adjustable bolt, and the concrete structure of this adjustable bolt refers to above-mentioned embodiment, because this tool holder has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. An adjustable bolt, comprising:
a bolt body including a support cylinder;
the fixing structure comprises a plurality of thread pieces, the thread pieces are annularly arranged on the outer peripheral wall of the supporting column body in a surrounding manner, each thread piece extends along the length direction of the supporting column body, one side of each thread piece, which is far away from the supporting column body, is provided with a fixing thread, and the fixing thread is used for being locked with a thread of a thread hole;
the adjusting structure is arranged between the supporting cylinder and the fixed structure and comprises a plurality of telescopic parts in one-to-one correspondence with the thread pieces, each telescopic part is movably telescopic in the radial direction of the supporting cylinder and is respectively connected with the supporting cylinder and the corresponding thread pieces at two ends in the telescopic direction so as to drive the thread pieces to be folded or expanded in the radial direction of the supporting cylinder.
2. The adjustable bolt according to claim 1, wherein the telescopic portion includes a first support section and a second support section hinged to each other in a length direction of the support column, the thread piece is installed at a hinge of the first support section and the second support section, and a free end of at least one of the first support section and the second support section is movably connected to the support column to drive the thread piece to move in a radial direction of the support column through the hinge rotation between the first support section and the second support section.
3. The adjustable bolt according to claim 2, wherein the adjustment structure further comprises an adjustment portion movably mounted to the support column, the adjustment portion being coupled to a free end of one of the first support section and the second support section to facilitate articulation therebetween based on movement of the adjustment portion on the support column.
4. The adjustable bolt according to claim 3, wherein the outer peripheral wall of the support cylinder is provided with an adjusting thread, and the adjusting portion is provided with a threaded hole adapted to the adjusting thread to be threadedly locked to the support cylinder.
5. The adjustable bolt according to claim 2, wherein the adjusting structure further comprises a limiting baffle plate surrounding the outer peripheral wall of the support cylinder, and the outer periphery of the limiting baffle plate is used for abutting against the hinge joint of the first support section and the second support section, so as to prevent any two adjacent thread pieces from being too close to the outer peripheral wall of the support cylinder to interfere with each other.
6. The adjustable bolt according to claim 1, wherein the telescopic portion comprises a first sliding rod and a second sliding rod slidably connected to each other in a radial direction of the support cylinder, a free end of one of the first sliding rod and the second sliding rod is connected to the support cylinder, and a free end of the other of the first sliding rod and the second sliding rod is connected to the threaded piece, so that the threaded piece is driven to move in the radial direction of the support cylinder by the sliding movement between the first sliding rod and the second sliding rod.
7. The adjustable bolt according to claim 1, wherein the expansion portion is a compression elastic member elastically extending along a radial direction of the support cylinder, and the compression elastic member is respectively connected to the support cylinder and the threaded plate along both ends of the elastic expansion portion to elastically drive the threaded plate to move in the radial direction of the support cylinder.
8. The adjustable bolt according to claim 1, wherein any two adjacent thread segments are disposed at the same angle with respect to the central axis of the support cylinder.
9. The adjustable bolt according to any one of claims 1 to 8, wherein the bolt body further comprises a fixing baffle fixedly arranged at an extending end of the support column, and the cross section of the fixing baffle in the radial direction of the support column is regular hexagon.
10. A tool kit comprising an adjustable bolt according to any one of claims 1 to 9.
CN202023002821.9U 2020-12-14 2020-12-14 Adjustable bolt and tool box Expired - Fee Related CN214274191U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023002821.9U CN214274191U (en) 2020-12-14 2020-12-14 Adjustable bolt and tool box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023002821.9U CN214274191U (en) 2020-12-14 2020-12-14 Adjustable bolt and tool box

Publications (1)

Publication Number Publication Date
CN214274191U true CN214274191U (en) 2021-09-24

Family

ID=77781214

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023002821.9U Expired - Fee Related CN214274191U (en) 2020-12-14 2020-12-14 Adjustable bolt and tool box

Country Status (1)

Country Link
CN (1) CN214274191U (en)

Similar Documents

Publication Publication Date Title
US5303832A (en) Hanger assembly
US7665699B2 (en) Electronic device mounting bracket for a horizontal support
CN214274191U (en) Adjustable bolt and tool box
US5899506A (en) Confining ring set suiting wider range of diameter of pipes
CN206054470U (en) A kind of fixed micro actuator of shell fragment strengthens arc expansion link
CN109277983A (en) A kind of multi-purpose bearing extractor
US4104642A (en) T-shaped swivel joint for an antenna mounting structure
CN105864609A (en) Cantilever angle adjusting mechanism
CN110656702A (en) Steel structure connecting device for factory building
CN203036218U (en) Camera multifunctional installation fixing device
CN211341167U (en) Steel structure connecting device for factory building
CN211026813U (en) Hook and spraying hanging tool
CN211822254U (en) Novel adjustable connector
CN214222506U (en) 360-degree full-view angle adjusting rotary head
CN211738564U (en) Projector overlapping hanging box
CN211599198U (en) Length-adjustable supporting leg
CN212250731U (en) Sleeve type hanging rod flange seat with adjustable installation height
CN218032510U (en) Head structure of television bracket
CN217170687U (en) Mine car locking device
CN210543227U (en) Boxing speed ball
CN208316631U (en) A kind of photovoltaic bracket of adjustable photovoltaic panel tilt angle
CN111305552B (en) Zigzag aluminum alloy template with adjustable radian
CN213123744U (en) Jazz drum hangs carousel mechanism for small cymbals
CN214186375U (en) Oil nozzle fixing device for end plate notching and tapping
CN217540248U (en) Angle iron tower adjusting bracket

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210924