CN209814130U - Spare tire mounting rack for trailer - Google Patents
Spare tire mounting rack for trailer Download PDFInfo
- Publication number
- CN209814130U CN209814130U CN201920320042.1U CN201920320042U CN209814130U CN 209814130 U CN209814130 U CN 209814130U CN 201920320042 U CN201920320042 U CN 201920320042U CN 209814130 U CN209814130 U CN 209814130U
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- fixed
- trailer
- mounting
- plate
- frame body
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- Expired - Fee Related
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Abstract
The utility model discloses a spare tire mounting rack for a trailer, which comprises a rack body fixed with the bottom of the trailer, a vertically arranged movable plate, a mounting plate fixed with the bottom surface of the movable plate, a driving device and a mounting device, wherein the upper end of the movable plate is connected with the bottom surface of the rack body in a sliding way, and the movable plate is arranged on one side of the mounting plate away from the tail of the trailer; the driving device comprises a first fixing plate which is vertically arranged at one end of the frame body far away from the tail of the trailer and is fixed with the bottom surface of the frame body, a second fixing plate which is vertically arranged at one end of the frame body near the tail of the trailer and is fixed with the bottom surface of the frame body, a screw rod which is rotatably arranged between the first fixing plate and the second fixing plate, a driving motor which is fixed with the side wall of the first fixing plate far away from the tail of the trailer and drives the screw rod to rotate, and an electric switch which is fixed on the frame body and is electrically; the screw rod passes through the moving plate and is in threaded connection with the moving plate. The utility model discloses has following effect: the new mechanical structure of this scheme utilization avoids the maintenance personal to bore the vehicle bottom and dismantles the spare tyre, and the security is high.
Description
Technical Field
The utility model relates to a trailer field, in particular to spare tyre mounting bracket for trailer.
Background
The trailer is an important vehicle for road transportation, has the advantages of rapidness, mobility, flexibility, safety and the like, and can be conveniently transported in a section by combining the trailer and a vehicle head into a trailer truck. Generally all be equipped with the spare tyre on the trailer to prevent the transportation of the flat tire accident influence goods in the transportation, and the spare tyre on the trailer sets up in the trailer bottom through the spare tyre frame usually, and maintenance personal need bore the vehicle bottom and dismantle the spare tyre when taking the spare tyre, and is not convenient enough, and bores the in-process that the vehicle bottom was dismantled the spare tyre at maintenance personal, and maintenance personal receives the high restriction of vehicle bottom, takes place easily and bumps accidents such as head and fish tail.
At present, chinese utility model patent that bulletin number is CN207292171U discloses a semitrailer spare tyre fixing device, including the spare tyre support of double-phase symmetry, spare tyre riser and crank support, the spare tyre riser is fixed between two spare tyre supports, and the rotary drum of spare tyre riser is located its dead ahead, and the crank support includes the otic placode of double-phase symmetry, and the both sides at two spare tyre supports are fixed respectively to the otic placode, is fixed with the connecting plate between the front end of otic placode, is equipped with the through-hole corresponding with the rotary drum on the connecting plate.
When the technical scheme is applied to the semitrailer with the wider longitudinal beam center distance, the spare tire is prevented from extending out of the outer side of the frame, the applicability is wider, and the following defects are present: this spare tyre fixing device needs maintenance personal to bore into trailer vehicle bottom operation when dismantling the spare tyre, takes place easily and bumps accidents such as head and fish tail, and the security is not high, for this, needs a spare tyre mounting bracket for trailer urgently, and this trailer spare tyre rack avoids maintenance personal to bore into the vehicle bottom and dismantles the spare tyre, and the security is high.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a spare tyre mounting bracket is used to trailer, this trailer spare tyre rack has avoided the maintenance personal to bore the work that the spare tyre was dismantled to the vehicle bottom, and the security is high.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a spare tire mounting rack for a trailer comprises a rack body which is fixed with the bottom of the trailer and arranged at the tail of the trailer, a movable plate which is vertically arranged at one end of the rack body far away from the tail of the trailer, a mounting plate which is fixed with the bottom surface of the movable plate, a driving device which is arranged on the rack body and a mounting device which is arranged on the mounting plate and used for mounting a spare tire, wherein the upper end of the movable plate is connected with the bottom surface of the rack body in a sliding manner, and the movable plate is arranged at one side of the mounting; the driving device comprises a first fixing plate vertically arranged at one end of the frame body far away from the tail of the trailer and fixed with the bottom surface of the frame body, a second fixing plate vertically arranged at one end of the frame body near the tail of the trailer and fixed with the bottom surface of the frame body, a screw rod rotatably arranged between the first fixing plate and the second fixing plate, a driving motor fixed with the side wall of the first fixing plate far away from the tail of the trailer and driving the screw rod to rotate, and an electric switch fixed on the side wall of the frame body near the tail of the trailer and electrically connected with the driving motor; the screw rod penetrates through the moving plate and is in threaded connection with the moving plate.
Through adopting above-mentioned technical scheme, when maintenance personal need take the spare tyre, operating personnel starting switch, make driving motor work, it rotates to have driven the lead screw, the movable plate has been driven and has slided towards the trailer rear, make the mounting panel and install the spare tyre on the mounting panel expose the trailer bottom, maintenance personal dismantles the spare tyre at last and can accomplish taking of spare tyre, so this spare tyre rack's setting has avoided maintenance personal to bore the work of dismantling the spare tyre into the trailer bottom, the security that this spare tyre rack used has been improved.
The utility model discloses further set up to, the spout that length direction and trailer length direction are unanimous is seted up to the support body bottom surface, movable plate upper surface fixed with set up in the spout and with spout inner wall sliding connection's slider.
Through adopting above-mentioned technical scheme, with the fixed slider of movable plate and the spout sliding connection who sets up in the support body bottom surface for movable plate and support body bottom surface sliding connection.
The utility model discloses further set up to, the spout both ends are equipped with the elasticity piece fixed with the spout inner wall.
Through adopting above-mentioned technical scheme, when the slider was close to the spout tip, slider and elastic block contact for the elastic block warp, has cushioned the impact on slider and the movable plate, has reduced the slider and has sent the noise with the collision of spout tip inside wall.
The utility model discloses further set up to, the cover is equipped with first elastic sleeve on the lead screw, first elastic sleeve one end with the movable plate is close to the lateral wall of first fixed plate is fixed and sealed, and the other end is fixed and sealed with the lateral wall that first fixed plate is close to the movable plate.
Through adopting above-mentioned technical scheme, the cover is equipped with first elastic sleeve on the lead screw, and first elastic sleeve one end is fixed and sealed with the lateral wall that the movable plate is close to first fixed plate, and the other end is fixed and sealed with the lateral wall that first fixed plate is close to the movable plate for the lead screw is located the movable plate and is close to first fixed plate's part and isolated with the outside air, thereby has reduced the corrosion damage of lead screw, has prolonged the life of lead screw.
The utility model discloses further set up to, still the cover is equipped with the second elastic sleeve on the lead screw, second elastic sleeve one end with the movable plate is close to the lateral wall of second fixed plate is fixed and sealed, the other end the lateral wall that the second fixed plate is close to the movable plate is fixed and sealed.
Through adopting above-mentioned technical scheme, the cover is equipped with the second elastic sleeve on the lead screw, and second elastic sleeve one end is fixed and sealed with the lateral wall that the movable plate is close to the second fixed plate, and the lateral wall that other end second fixed plate is close to the movable plate is fixed and sealed for the lead screw is located the part that the movable plate is close to the second fixed plate and is isolated with the outside air, thereby has reduced the corrosion damage of lead screw, has prolonged the life of lead screw.
The utility model is further arranged in that the mounting device comprises a mounting pipe vertically passing through the upper surface of the mounting plate and fixed with the mounting pipe, a mounting post arranged in the mounting pipe and in threaded connection with the inner side wall of the mounting pipe, a rotating block arranged outside the mounting pipe and fixed with the lower end of the mounting post, a clamping strip horizontally passing through the outer side wall of the mounting pipe and in sliding connection with the mounting pipe, and an extrusion head fixed on the end part of the mounting post, wherein the mounting post is positioned on the mounting post; the mounting pipe penetrates through the spare tire, and the upper surface of the mounting plate is abutted to the bottom surface of the spare tire; the side wall of the clamping strip, which is positioned in the mounting pipe, inclines towards the extrusion head, and the bottom surface of the clamping strip is flush with the inner bottom wall of the spare tire end face groove; the extrusion head is in a round table shape, and the larger end face of the extrusion head is fixed with the upper end face of the mounting column.
Through adopting above-mentioned technical scheme, when the turning block rotates, in the erection column screw in installation pipe, make the extrusion head that is fixed in on the erection column remove towards the joint strip, the slope lateral wall that until the extrusion head offsets with the slope lateral wall of joint strip, make the joint strip remove outside the erection pipe, thereby make joint strip bottom surface and spare tyre terminal surface recess's interior diapire offset, it is spacing to make the spare tyre at the axis of erection pipe, and the erection pipe passes the spare tyre, make the spare tyre spacing on the horizontal direction, thereby make the spare tyre place firmly on the mounting panel.
The utility model discloses further set up to, the joint strip is equipped with two, two the length direction of joint strip is unanimous, and two the joint strip is located be fixed with the joint spring between the intraductal lateral wall of installation.
Through adopting above-mentioned technical scheme, when the turning block reversal, the erection column back-out installation pipe for the slope lateral wall separation of extrusion head and joint strip, at this moment, the joint spring shrink makes the joint strip be close to each other, thereby makes the joint strip take in the erection pipe, and maintenance personal takes out getting of spare tyre and can accomplish getting of spare tyre this moment and use convenient and fast.
The utility model discloses further set up to, the fixed antislip strip by length direction is vertical of turning block lateral wall, the antislip strip is equipped with many, many the antislip strip encircles the axis evenly distributed of turning block.
Through adopting above-mentioned technical scheme, when maintenance personal rotated the turning block, in the clearance between maintenance personal hand skin embedding antislip strip, increased the friction of maintenance personal hand and turning block, prevented that maintenance personal from rotating and skidding when the turning block.
To sum up, the utility model discloses a beneficial technological effect does:
1. when a maintenance worker takes the spare tire, the electric switch is started, so that the driving motor works to drive the screw rod to rotate, the movable plate is driven to slide towards the tail of the trailer, the mounting plate and the spare tire mounted on the mounting plate are exposed out of the bottom of the trailer, and finally, the maintenance worker can take the spare tire by disassembling the spare tire, so that the spare tire rack is arranged, the maintenance worker is prevented from drilling into the bottom of the trailer to disassemble the spare tire, and the use safety of the spare tire rack is improved;
2. when the sliding block is close to the end part of the sliding chute, the sliding block is contacted with the elastic block, so that the elastic block is deformed, the impact on the sliding block and the moving plate is buffered, and the noise generated by the collision of the sliding block and the inner side wall of the end part of the sliding chute is reduced;
3. when the turning block rotates, in the erection column screw in installation pipe, the extrusion head that is fixed in on the erection column removes towards the joint strip, the slope lateral wall that until the extrusion head offsets with the slope lateral wall of joint strip, make the joint strip remove outside the erection pipe, thereby make joint strip bottom surface and the interior diapire of spare tyre terminal surface recess offset, it is spacing to make the spare tyre at the axis of erection pipe, pass the spare tyre in addition to the erection pipe, thereby make the spare tyre spacing on the horizontal direction, make the spare tyre place the firm on the mounting panel.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic view of the structure of the driving device;
fig. 3 is a schematic view of the structure of the mounting device.
In the figure: 1. a frame body; 11. a chute; 111. an elastic block; 2. moving the plate; 21. a slider; 3. mounting a plate; 4. a drive device; 41. a first fixing plate; 42. a second fixing plate; 43. a screw rod; 431. a first elastic sleeve; 432. a second elastic sleeve; 44. a drive motor; 45. an electric switch; 5. a mounting device; 51. installing a pipe; 52. mounting a column; 53. rotating the block; 531. anti-slip strips; 54. a clamping strip; 55. an extrusion head; 56. the spring is clamped.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the spare tire mounting bracket for the trailer comprises a bracket body 1, a moving plate 2, a mounting plate 3, a driving device 4 and a mounting device 5. As shown in fig. 2, the frame body 1 is a rectangular plate-shaped structure and horizontally arranged at the tail of the trailer, and the upper surface of the frame body 1 is fixed to the bottom of the trailer. The bottom surface of the frame body 1 is provided with a sliding chute 11, the length direction of the sliding chute 11 is consistent with that of the trailer, and the cross section of the sliding chute 11 is trapezoidal. The moving plate 2 is rectangular plate-shaped and vertically arranged at the lower side of the frame body 1, and the larger side wall of the moving plate 2 is vertical to the length direction of the sliding groove 11. The moving plate 2 is provided with a slide block 21, the vertical section of the slide block 21 is trapezoidal, the smaller plane of the slide block is fixed with the upper surface of the moving plate 2, and the slide block 21 is arranged in the sliding groove 11 and is in sliding connection with the inner wall of the sliding groove 11. The two ends of the sliding chute 11 are provided with elastic blocks 111, the elastic blocks 111 are of a block structure with a trapezoidal section and made of elastic rubber materials, and the elastic blocks 111 are arranged in the sliding chute 11 and fixed with the inner wall of the sliding chute 11. The mounting plate 3 is rectangular plate-shaped, and its level sets up in support body 1 downside, and mounting plate 3 upper surface and movable plate 2 bottom surface are fixed, and in addition, movable plate 2 sets up in the side of mounting plate 3 keeping away from the trailer rear.
As shown in fig. 2, the driving device 4 includes a first fixing plate 41, a second fixing plate 42, a lead screw 43, a driving motor 44, and an electric switch 45. The first fixing plate 41 is rectangular plate-shaped and vertically disposed on one side of the frame body 1 away from the tail of the trailer, and the upper surface of the first fixing plate 41 is fixed to the bottom surface of the frame body 1. The second fixing plate 42 is rectangular plate-shaped and vertically disposed on one side of the frame body 1 near the tail of the trailer, and the second fixing plate 42 is fixed to the bottom surface of the frame body 1. The axis of the screw 43 is horizontal, two ends of the screw are respectively and rotatably connected with the side wall of the first fixing plate 41 close to the moving plate 2 and the side wall of the second fixing plate 42 close to the moving plate 2, and the screw 43 passes through the larger side wall of the moving plate 2 and is in threaded connection with the moving plate 2. The driving motor 44 is fixed to the first fixing plate 41 away from the side wall of the moving plate 2, and the output shaft thereof passes through the first fixing plate 41 and is fixed to the end of the screw 43. An electric switch 45 is fixed on the side wall of the frame body 1 close to the tail of the trailer, and the electric switch 45 is electrically connected with the driving motor 44. The screw 43 is sleeved with a first elastic sleeve 431 and a second elastic sleeve 432, the first elastic sleeve 431 and the second elastic sleeve 432 are in a circular tube shape, and the first elastic sleeve 431 and the second elastic sleeve 432 are both made of elastic rubber materials. One end of the first elastic sleeve 431 is fixed and sealed with the side wall of the moving plate 2 close to the first fixed plate 41, and the other end is fixed and sealed with the side wall of the first fixed plate 41 close to the moving plate 2. One end of the second elastic sleeve 432 is fixed and sealed with the side wall of the moving plate 2 close to the second fixed plate 42, and the other end of the second fixed plate 42 is fixed and sealed with the side wall of the moving plate 2 close to the second fixed plate 42.
As shown in fig. 2 and 3, the mounting device 5 includes a mounting tube 51, a mounting post 52, a rotating block 53, a snap strip 54, an extrusion head 55, and a snap spring 56. The mounting tube 51 is in a circular tube shape, the axis of the mounting tube is vertical, the upper end of the mounting tube is closed, and the mounting tube 51 vertically penetrates through the upper surface of the mounting plate 3 and is fixed with the mounting plate 3. The mounting post 52 is a cylindrical structure, the axis of the mounting post coincides with the axis of the mounting pipe 51, and the upper end of the mounting post 52 penetrates into the mounting pipe 51 and is in threaded connection with the inner side wall of the mounting pipe 51. The rotating block 53 is in the shape of a circular block, the axis of the rotating block coincides with the axis of the mounting column 52, and the upper surface of the mounting block is fixed with the lower end of the mounting column 52. Be equipped with antislip strip 531 on the installation piece, antislip strip 531 is the strip structure that the horizontal cross-section is the rectangle, and it is fixed with the installation piece lateral wall, and antislip strip 531 is equipped with many, and many antislip strip 531 encircle the axis evenly distributed of turning block 53. Clamping strip 54 is rectangular strip, and it sets up in the upside of erection column 52, and clamping strip 54 passes the installation pipe 51 lateral wall and with installation pipe 51 sliding connection. Two clamping bars 54 are arranged, the length directions of the two clamping bars 54 are consistent, and the side wall of each clamping bar 54 in the installation pipe 51 inclines downwards. The extrusion head 55 is in a circular truncated cone shape, the axis of the extrusion head is overlapped with the axis of the mounting column 52, and the larger end face of the extrusion head 55 is fixed with the upper end face of the mounting column 52. Clamping spring 56 is arranged in installation tube 51, and its axis is horizontal, and clamping spring 56 both ends are fixed with the slope lateral wall of joint strip 54 respectively. When the spare tire is installed, the installation tube 51 vertically passes through the spare tire end face, and the rotating block 53 rotates, so that the installation column 52 is screwed into the installation tube 51, the inclined side wall of the extrusion head 55 abuts against the inclined side wall of the clamping strip 54, the clamping strip 54 moves outwards towards the installation tube 51, at the moment, the bottom surface of the clamping strip 54 abuts against the inner bottom wall of the spare tire groove, and the spare tire is stably installed on the installation plate 3.
This embodiment is when using, when the spare tyre needs to be taken to the maintenance personal, operating personnel starting switch 45, make driving motor 44 work, it rotates to have driven lead screw 43, it slides towards the trailer rear to have driven movable plate 2, make mounting panel 3 and install the spare tyre on mounting panel 3 expose the trailer bottom, then maintenance personal rotates turning block 53, make extrusion head 55 move down, joint spring 56 shrink simultaneously, thereby make joint strip 54 income installation pipe 51, maintenance personal takes out taking of spare tyre can accomplish taking of spare tyre this moment, so this spare tyre rack's setting, the work of having avoided maintenance personal to bore trailer bottom dismantlement spare tyre, the security that this spare tyre rack used has been improved.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a spare tyre mounting bracket for trailer, characterized by: the auxiliary device comprises a frame body (1) fixed with the bottom of a trailer and arranged at the tail of the trailer, a movable plate (2) vertically arranged at one end, far away from the tail of the trailer, of the frame body (1), a mounting plate (3) fixed with the bottom surface of the movable plate (2), a driving device (4) arranged on the frame body (1) and a mounting device (5) arranged on the mounting plate (3) and used for mounting a spare tire, wherein the upper end of the movable plate (2) is in sliding connection with the bottom surface of the frame body (1), and the movable plate (2) is arranged at one side, far away from the tail of the trailer, of the; the driving device (4) comprises a first fixing plate (41) which is vertically arranged at one end of the frame body (1) far away from the tail of the trailer and is fixed with the bottom surface of the frame body (1), a second fixing plate (42) which is vertically arranged at one end of the frame body (1) near the tail of the trailer and is fixed with the bottom surface of the frame body (1), a screw rod (43) which is rotatably arranged between the first fixing plate (41) and the second fixing plate (42), a driving motor (44) which is fixed with the side wall of the first fixing plate (41) far away from the tail of the trailer and drives the screw rod (43) to rotate, and an electric switch (45) which is fixed on the side wall of the frame body (1) near the tail of the trailer and is electrically connected with; the screw rod (43) penetrates through the moving plate (2) and is in threaded connection with the moving plate.
2. The spare tire mounting bracket for a trailer according to claim 1, wherein: the bottom surface of the frame body (1) is provided with a sliding groove (11) with the length direction consistent with the length direction of the trailer, and the upper surface of the movable plate (2) is fixedly provided with a sliding block (21) which is arranged in the sliding groove (11) and is in sliding connection with the inner wall of the sliding groove (11).
3. The spare tire mounting bracket for a trailer as claimed in claim 2, wherein: and elastic blocks (111) fixed with the inner wall of the sliding chute (11) are arranged at the two ends of the sliding chute (11).
4. The spare tire mounting bracket for a trailer according to claim 1, wherein: the lead screw (43) is sleeved with a first elastic sleeve (431), one end of the first elastic sleeve (431) is fixed and sealed with the side wall, close to the first fixing plate (41), of the moving plate (2), and the other end of the first elastic sleeve is fixed and sealed with the side wall, close to the moving plate (2), of the first fixing plate (41).
5. The spare tire mounting bracket for a trailer as claimed in claim 4, wherein: and a second elastic sleeve (432) is further sleeved on the screw rod (43), one end of the second elastic sleeve (432) is fixed and sealed with the side wall, close to the second fixed plate (42), of the moving plate (2), and the other end of the second elastic sleeve (432) is fixed and sealed with the side wall, close to the moving plate (2), of the second fixed plate (42).
6. The spare tire mounting bracket for a trailer according to claim 1, wherein: the mounting device (5) comprises a mounting pipe (51) vertically penetrating through the upper surface of the mounting plate (3) and fixed with the mounting pipe, a mounting column (52) arranged in the mounting pipe (51) and in threaded connection with the inner side wall of the mounting pipe (51), a rotating block (53) arranged outside the mounting pipe (51) and fixed with the lower end of the mounting column (52), a clamping strip (54) horizontally penetrating through the outer side wall of the mounting pipe (51) and in sliding connection with the mounting pipe (51), and an extrusion head (55) fixed on the end part of the mounting column (52); the mounting pipe (51) penetrates through the spare tire, and the upper surface of the mounting plate (3) is abutted against the bottom surface of the spare tire; the side wall of the clamping strip (54) positioned in the mounting tube (51) inclines towards the extrusion head (55), and the bottom surface of the clamping strip (54) is flush with the inner bottom wall of the spare tire end face groove; the extrusion head (55) is in a circular truncated cone shape, and the larger end face of the extrusion head (55) is fixed with the upper end face of the mounting column (52).
7. The spare tire mounting bracket for a trailer as claimed in claim 6, wherein: the clamping connection strips (54) are two, the length direction of the clamping connection strips (54) is consistent, and the clamping connection strips (54) are located, and clamping connection springs (56) are fixed between the side walls in the installation pipe (51).
8. The spare tire mounting bracket for a trailer as claimed in claim 6, wherein: the anti-skidding strips (531) are fixed on the side wall of the rotating block (53) and vertical in the length direction, a plurality of anti-skidding strips (531) are arranged, and the anti-skidding strips (531) are uniformly distributed around the axis of the rotating block (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920320042.1U CN209814130U (en) | 2019-03-13 | 2019-03-13 | Spare tire mounting rack for trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920320042.1U CN209814130U (en) | 2019-03-13 | 2019-03-13 | Spare tire mounting rack for trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209814130U true CN209814130U (en) | 2019-12-20 |
Family
ID=68875420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920320042.1U Expired - Fee Related CN209814130U (en) | 2019-03-13 | 2019-03-13 | Spare tire mounting rack for trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209814130U (en) |
-
2019
- 2019-03-13 CN CN201920320042.1U patent/CN209814130U/en not_active Expired - Fee Related
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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: 20191220 |