CN216993042U - Automobile windshield wiper pole head shaping device - Google Patents
Automobile windshield wiper pole head shaping device Download PDFInfo
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- CN216993042U CN216993042U CN202220476399.0U CN202220476399U CN216993042U CN 216993042 U CN216993042 U CN 216993042U CN 202220476399 U CN202220476399 U CN 202220476399U CN 216993042 U CN216993042 U CN 216993042U
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Abstract
The utility model discloses a shaping device for a head of an automobile windshield wiper, which comprises: a base; the carrying device is arranged on the base and used for placing the windshield wiper rod head; the shaping device comprises a first driving part and a compression molding mechanism, wherein the first driving part is arranged on the base and positioned on one side of the loading device, the compression molding mechanism is arranged on the first driving part, the first driving part is used for driving the compression molding mechanism to contact with or leave the head of the windshield wiper, and the compression molding mechanism is used for shaping and processing the head of the windshield wiper. The utility model places the wiper rod head on the carrying device through manpower or a mechanical arm, then the first driving piece on the shaping device positioned on one side of the carrying device drives the die pressing mechanism to contact the wiper rod head placed on the carrying device to shape the wiper rod head, so that the appearance of the wiper rod head conforms to the specification of the die pressing mechanism. After the reshaping is finished, the first driving piece drives the compression molding mechanism to leave the windshield wiper rod head, and the windshield wiper rod head returns to the original position to wait for manual work or a mechanical arm to take away the reshaped windshield wiper rod head. The automatic shaping of the head of the windshield wiper is realized, and the working efficiency is high.
Description
Technical Field
The utility model relates to the field of workpiece processing devices, in particular to a reshaping device for an automobile windshield wiper rod head.
Background
In daily life, an automobile is one of the transportation means frequently selected by people during traveling, and the wiper of the automobile mainly plays a role in cleaning dirt such as rain, snow and dust which obstruct the view on a windshield, and is generally composed of a motor, a speed reducer, a four-bar linkage mechanism, a wiper arm spindle and a wiper blade assembly. The four-bar linkage mechanism comprises a plurality of interconnected bars, and the interconnected bars are connected through a workpiece.
The connecting parts of the wiper are usually made of metal or rubber, and are also called wiper heads, which are generally formed by casting and die casting. Because the influence of a casting mold or external temperature exists in the process of pouring and molding a mold and after the casting mold is finished, the windshield wiper rod head is easy to deform, the windshield wiper rod head cannot be directly put into use after the production is finished, a shaping device is required to carry out regular shaping processing on the windshield wiper rod head, and the shaping processing refers to a general name of a series of processes for processing and shaping the shape or a certain characteristic of a workpiece. The plastic processing of current windshield wiper head is through artifical placing the windshield wiper head on the holding mould, recycles design mould crimping windshield wiper head, then artifical use tools such as gluey hammer carry out hammering processing to the holding mould, make design mould act on the windshield wiper head and carry out the plastic, because the in-process needs artifical the participation, wastes time and energy, and is inefficient.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a reshaping device for an automobile windshield wiper rod head, and aims to solve the technical problem that the efficiency of manually reshaping the windshield wiper rod head in the prior art is low.
In order to achieve the above object, the present invention provides a reshaping device for a head of a wiper blade of an automobile, comprising:
a base;
the carrying device is arranged on the base and used for placing the windshield wiper rod head;
the shaping device comprises a first driving part and a compression molding mechanism, wherein the first driving part is arranged on the base and positioned on one side of the object carrying device, the compression molding mechanism is arranged on the first driving part, the first driving part is used for driving the compression molding mechanism to contact with or leave the head of the windshield wiper, and the compression molding mechanism is used for shaping and processing the head of the windshield wiper.
In some embodiments, the molding mechanism includes a first mounting seat mounted on the first driving member and a shaping jig disposed on the first mounting seat, and an accommodating cavity for accommodating the wiper rod head is opened on a side of the shaping jig facing away from the first mounting seat.
In some embodiments, the shaping device for the head of the automobile windshield wiper further comprises a first connecting unit for making the shaping jig move smoothly, the first connecting unit comprises a first linear bearing and a first optical axis, the first linear bearing is mounted on the base, and one end of the first optical axis penetrates through the first linear bearing and is connected to the first mounting seat.
In some embodiments, the reshaping device for a head of a windshield wiper of an automobile further includes a second driving member disposed on the base, the carrying device includes a mounting plate mounted on the second driving member and a plurality of stage mechanisms disposed on the mounting plate, and the second driving member is configured to drive the mounting plate to rotate, so that each stage mechanism moves below the reshaping device or away from the reshaping device.
In some embodiments, each of the stage mechanisms includes a second mounting base mounted on the mounting plate, and a bearing component elastically connected with the second mounting base through an elastic member, the second mounting base has a first mounting groove for accommodating one end of the elastic member, the bearing component has a second mounting groove for accommodating the other end of the elastic member, and the bearing component is used for placing and supporting the wiper rod head.
In some embodiments, the bearing component includes a third mounting seat, a second connecting unit, a jig mounting plate, and a wiper rod head jig, the jig mounting plate is slidably connected to the third mounting seat through the second connecting unit, the wiper rod head jig is detachably mounted on the jig mounting plate, and the second mounting groove is opened on a side of the third mounting seat facing away from the wiper rod head jig.
In some embodiments, the second connecting unit includes a second optical axis and a second linear bearing, the third mounting seat has a mounting hole through it, the second linear bearing is mounted in the mounting hole, one end of the second optical axis is connected to the jig mounting plate, and the other end of the second optical axis passes through the second linear bearing and is exposed to the outside.
In some embodiments, the shaping device for the head of the automobile wiper further includes a hole expanding component installed on the third installation seat and used for expanding the hole of the head of the wiper, the third installation seat is provided with a first through hole, the jig installation plate is provided with a second through hole, the wiper head jig is provided with a third through hole, the first through hole, the second through hole and the third through hole are concentrically arranged, and one end of the hole expanding component sequentially penetrates through the first through hole, the second through hole and the third through hole to expand the hole of the head of the wiper placed on the wiper head jig.
In some embodiments, the reaming assembly comprises a reamer and a retainer, wherein:
the second mounting seat is provided with a fourth through hole, one end of the limiting piece penetrates through the fourth through hole to be connected with the third mounting seat, and the other end of the limiting piece is provided with a clamping portion which is used for limiting the displacement of the third mounting seat along the vertical direction under the action of the elastic piece;
the reaming piece is used for reaming processing the one end of the wiper rod head sequentially passes through the fourth through hole, the first through hole, the second through hole and the third through hole to act on the wiper rod head, and the other end of the wiper rod head is connected with the limiting piece.
In some embodiments, the shaping device for a wiper rod head of an automobile of the present invention further includes a detecting element disposed on the base and located on one side of the carrying device, and the detecting element is configured to detect the presence or absence of the wiper rod head on the carrying device.
The shaping device for the automobile windshield wiper rod head places the windshield wiper rod head on the object carrying device through manpower or a mechanical arm, then the first driving piece on the shaping device positioned on one side of the object carrying device drives the compression molding mechanism to contact the windshield wiper rod head placed on the object carrying device, and the shaping device shapes the windshield wiper rod head, so that the shape of the windshield wiper rod head meets the specification of the compression molding mechanism. After the shaping is finished, the first driving piece drives the compression molding mechanism to leave the wiper rod head, and the wiper rod head returns to the original position to wait for the replacement of a new wiper rod head to be processed after the shaped wiper rod head is taken away by manpower or a mechanical arm. The automatic shaping of the head of the windshield wiper is realized, so that the working efficiency is high.
Drawings
FIG. 1 is a schematic structural view of a shaping device for a head of an automobile wiper blade according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a molding mechanism of a shaping device for a head of an automobile wiper according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a carrier mechanism of the shaping device for the head of an automobile wiper according to an embodiment of the present invention.
Description of the reference numerals
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In some embodiments, referring to fig. 1, the present disclosure provides an automotive wiper blade tip shaping device, comprising:
a base 1;
the carrying device 2 is arranged on the base 1 and used for placing a windshield wiper rod head;
the shaping device 3 comprises a first driving part 31 arranged on the base 1 and positioned on one side of the carrying device 2 and a pressing mold mechanism 32 arranged on the first driving part 31, wherein the first driving part 31 is used for driving the pressing mold mechanism 32 to contact with or leave the wiper rod head, and the pressing mold mechanism 32 is used for shaping the wiper rod head.
In this embodiment, the working principle of the reshaping device for the head of the automobile windshield wiper of the utility model is as follows: the wiper head is placed on the object carrying device 2 through manual work or a mechanical arm, then the first driving piece 31 on the shaping device 3 on one side of the object carrying device drives the pressing mold mechanism 32 to move towards the object carrying device 2 and contact the wiper head placed on the object carrying device 2, and the pressing mold mechanism 32 shapes the wiper head, so that the shape of the wiper head conforms to the specification of the pressing mold mechanism 32. After shaping for a certain time, the first driving member 31 drives the compression molding mechanism 32 to leave the wiper rod head, and returns to the original position to wait for the wiper rod head to be replaced by a new wiper rod head to be processed after the shaped wiper rod head is taken away by a manual or mechanical arm, and the processing operation is repeated. The first driving member 31 is a driving motor, and driving elements such as an air cylinder and an electric cylinder can be selected to replace the driving motor according to different requirements.
In some embodiments, referring to fig. 2, the molding press 32 provided by the present invention includes a first mounting seat 321 installed on the first driving member 31 and a shaping fixture 322 disposed on the first mounting seat 321, wherein an accommodating cavity 3221 for accommodating a head of a wiper is disposed on a side of the shaping fixture 322 opposite to the first mounting seat 321.
In this embodiment, the shaping jig 322 is detachably mounted on the first mounting seat 321, and the shape of the accommodating cavity 3221 is designed according to the shape of the wiper rod head, so that different shapes of the accommodating cavity 3221 can be adapted to different wiper rod heads by replacing the shaping jig 322. The working principle of the die pressing mechanism 32 is as follows: when the pressing mold mechanism 32 is driven by the first driving member 31 to move toward the head of the wiper blade until the head enters the accommodating cavity 3221, the head is clamped under the combined action of the shaping jig 322 and the carrying device 2, so that the head completely enters the accommodating cavity 3221 to complete shaping, and after the shaping is completed, the first driving member 31 drives the shaping jig 322 to leave, so that the shaping operation is completed.
In some embodiments, referring to fig. 1, the reshaping apparatus for a head of a windshield wiper of the present invention further comprises a first connecting unit 4 for smoothing the movement of the shaping jig 322, wherein the first connecting unit 4 comprises a first linear bearing 41 and a first optical axis 42, the first linear bearing 41 is mounted on the base 1, and one end of the first optical axis 42 passes through the first linear bearing 41 and is connected to the first mounting seat 321.
In this embodiment, the first connection unit 4 is a linear motion system with a linear bearing and an optical axis matched with each other, and the linear motion system has a plurality of linear motion systems such as a linear guide rail slider, a screw rod and a screw nut replaced with the same function. The first linear bearing 41 is fixed on the base 1, when the first driving member 31 drives the first mounting seat 321 to move, i.e. the first optical axis 42 slides linearly in the first linear bearing 41, the two groups of first connecting units 4 are normally disposed to ensure the linearity of the movement of the shaping jig 322, so as to ensure that the accommodating cavity 3221 on the shaping jig 322 can be aligned with the wiper rod head correctly.
In some embodiments, referring to fig. 1, the reshaping device for a head of a windshield wiper of an automobile provided by the present invention further includes a second driving member 5 disposed on the base 1, the carrying device 2 includes a mounting plate 21 mounted on the second driving member 5 and a plurality of stage mechanisms 22 disposed on the mounting plate 21, the second driving member 5 is configured to drive the mounting plate 21 to rotate, so that each stage mechanism 22 moves below the reshaping device 3 or away from the reshaping device 3.
In this embodiment, the second driving member 5 drives the mounting plate 21 to rotate, thereby driving the carrier mechanism 22 to move the wiper rod head fixed thereon from the loading position to the lower part of the shaping device 3, so as to greatly improve the processing efficiency, when the wiper rod head is placed by using a manipulator or manual transfer, after the wiper rod head is placed to be shaped, the mounting plate 21 is driven to rotate, the carrier mechanism 22 on which the wiper rod head is placed rotates towards the shaping device 3, the next carrier mechanism 22 on which the wiper rod head is not placed is rotated to the loading position to wait for the manipulator or manual loading, and the wiper rod head after the shaping operation is completed is also conveyed back to the loading position, and the shaping operation of the wiper rod head is completed by repeating the above actions. The second driving member 5 can be driven by a cylinder, an electric cylinder or other driving elements to replace a driving motor according to different requirements.
In some embodiments, referring to fig. 3, each of the carrier mechanisms 22 proposed by the present invention includes a second mounting base 221 mounted on the mounting plate 21 and a bearing component 223 elastically connected to the second mounting base 221 through an elastic member 222, the second mounting base 221 has a first mounting groove 2211 for accommodating one end of the elastic member 222, the bearing component 223 has a second mounting groove for accommodating the other end of the elastic member 222, and the bearing component 223 is used for placing and supporting the wiper head.
In this embodiment, the elastic member 222 connected between the second mounting seat 221 and the supporting member 223 mainly functions to cushion the head of the wiper placed on the supporting member 223 when the head is pressed. When the first driving member 31 drives the shaping jig 322 to shape, the head of the wiper may be pressed down, and the elastic member 222 provides a buffering force at one end to make the pressing down stable, thereby ensuring the stability of shaping processing. The first and second mounting grooves 2211 and 2211 are concentrically arranged so that the elastic member 222 can be correctly mounted and has a certain guiding function.
In some embodiments, referring to fig. 3, the bearing assembly 223 according to the present invention includes a third mounting seat 2231, a second connecting unit 2232, a jig mounting plate 2233, and a wiper head jig 2234, wherein the jig mounting plate 2233 is slidably connected to the third mounting seat 2231 through the second connecting unit 2232, the wiper head jig 2234 is detachably mounted on the jig mounting plate 2233, and the second mounting groove is opened on a side of the third mounting seat 2231 opposite to the wiper head jig 2234.
In this embodiment, the shape of the wiper head fixture 2234 may be designed according to different shapes of the wiper head, and the shaping device for the automobile wiper head supports the inner wall of the wiper head by clamping the wiper head on the wiper head fixture 2234. Other fixing modes can be selected according to different requirements.
In some embodiments, referring to fig. 3, the second connection unit 2232 according to the present invention includes a second optical axis 2232a and a second linear bearing 2232b, wherein a third mounting seat 2231 is provided with a mounting hole, the second linear bearing 2232b is mounted in the mounting hole, one end of the second optical axis 2232a is connected to the jig mounting plate 2233, and the other end of the second optical axis 2232a passes through the second linear bearing 2232b and is exposed to the outside.
In this embodiment, the second connecting unit 2232 is a linear motion system composed of a linear bearing and an optical axis, and has the same function as the linear motion system of the linear bearing and the optical axis mentioned in the foregoing embodiments, and is not described herein again.
In some embodiments, referring to fig. 3, the shaping device for an automobile wiper rod head further includes a hole enlarging component 6 installed on the third installation seat 2231 and used for enlarging a hole of the wiper rod head, the third installation seat 2231 is provided with a first through hole 2231a, the jig installation plate 2233 is provided with a second through hole 2233a, the wiper rod head jig 2234 is provided with a third through hole 2234a, the first through hole 2231a, the second through hole 2233a and the third through hole 2234a are concentrically arranged, and one end of the hole enlarging component 6 sequentially passes through the first through hole 2231a, the second through hole 2233a and the third through hole 2234a to enlarge the wiper rod head placed on the wiper rod head jig 2234.
In this embodiment, the hole enlarging component 6 is used for reshaping the positions of the wiper blade head where holes need to be formed, one end of the hole enlarging component 6 sequentially passes through the first through hole 2231a, the second through hole 2233a and the third through hole 2234a, when the first driving member 31 drives the reshaping jig 322 to press down the wiper blade head placed on the wiper blade head jig 2234, the pressed wiper blade head jig 2234 compresses the spring, the hole enlarging component 6 contacts the hole of the wiper blade head and reshapes the hole, after the pressing down, the wiper blade head jig 2234 receives the elastic force of the elastic member 222, after the spring back is in place, the hole enlarging component 6 leaves the hole where the holes are reshaped, and reshaping operation of the hole is completed.
In some embodiments, referring to fig. 3, the reaming assembly 6 comprises a reaming member 61 and a retaining member 62, wherein:
the second mounting base 221 is provided with a fourth through hole 2212, one end of the limiting member 62 passes through the fourth through hole 2212 and is connected to the third mounting base 2231, and the other end of the limiting member is provided with a clamping portion 2212, the clamping portion 2212 is used for limiting the vertical displacement of the third mounting base 2231 under the action of the elastic member 222;
the hole enlarging member 61 is used for enlarging one end of the wiper head to pass through the fourth through hole 2212, the first through hole 2231a, the second through hole 2233a and the third through hole 2234a in sequence to act on the wiper head, and the other end is connected to the stopper 62.
In this embodiment, the hole enlarging member 61 is an axle with one end for processing a hole on the wiper rod head being in a frustum shape, the frustum shape is favorable for entering the hole to be processed to enlarge the hole, the other end of the hole enlarging member is connected with the limiting member 62, and the limiting member 62 supports the hole enlarging member 61, so that the hole enlarging member 61 is kept still when the first driving member 31 drives the shaping jig 322 to press down.
In some embodiments, referring to fig. 1, the reshaping apparatus for a wiper head of an automobile according to the present invention further includes a detecting member 7 disposed on the base 1 and located on one side of the carrying device 2, wherein the detecting member 7 is used for detecting the presence or absence of the wiper head on the carrying device 2.
In this embodiment, the detecting member 7 is used for detecting whether there is a wiper head on the object carrying device 2, when there is a wiper head, the shaping device 3 will carry out shaping processing on the object carrying device 2, the detecting member 7 can select an inductor, and detecting elements of different detecting modes such as an optical fiber can be used as long as the effect of detecting the wiper head can be achieved. The detecting member 7 is a mistake-proofing device, and its core purpose is to avoid that the shaping device 3 can not press down the object carrying device 2 when the object carrying device 2 has no wiper head, and to avoid that the two are directly contacted to cause damage under the condition that there is no wiper head.
The above description is only a part of or preferred embodiments of the present invention, and neither the text nor the drawings should be construed as limiting the scope of the present invention, and all equivalent structural changes, which are made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An automotive wiper head shaping device, comprising:
a base;
the carrying device is arranged on the base and used for placing the windshield wiper rod head;
the shaping device comprises a first driving part and a compression molding mechanism, wherein the first driving part is arranged on the base and positioned on one side of the object carrying device, the compression molding mechanism is arranged on the first driving part, the first driving part is used for driving the compression molding mechanism to contact with or leave the windshield wiper rod head, and the compression molding mechanism is used for shaping and processing the windshield wiper rod head.
2. The shaping device of claim 1, wherein the molding mechanism comprises a first mounting seat mounted on the first driving member and a shaping fixture disposed on the first mounting seat, and a receiving cavity for receiving the wiper rod is opened on a side of the shaping fixture facing away from the first mounting seat.
3. The shaping device of claim 2, further comprising a first connecting unit for smoothing the movement of the shaping jig, wherein the first connecting unit comprises a first linear bearing and a first optical axis, the first linear bearing is mounted on the base, and one end of the first optical axis passes through the first linear bearing and is connected to the first mounting seat.
4. The device according to claim 1, further comprising a second driving member disposed on the base, wherein the carrier device comprises a mounting plate mounted on the second driving member and a plurality of carrier mechanisms disposed on the mounting plate, and wherein the second driving member is configured to drive the mounting plate to rotate so that each of the carrier mechanisms moves below the shaping device or away from the shaping device.
5. The apparatus according to claim 4, wherein each of said carrier mechanisms comprises a second mounting base mounted on said mounting plate and a carrier member resiliently coupled to said second mounting base by a resilient member, said second mounting base having a first mounting groove for receiving one end of said resilient member, said carrier member having a second mounting groove for receiving the other end of said resilient member, said carrier member being adapted to receive and support said wiper blade head.
6. The shaping device of claim 5, wherein the carrier assembly includes a third mounting seat, a second connecting unit, a jig mounting plate and a wiper head jig, the jig mounting plate is slidably connected to the third mounting seat through the second connecting unit, the wiper head jig is detachably mounted on the jig mounting plate, and the second mounting groove is opened on a side of the third mounting seat facing away from the wiper head jig.
7. The reshaping apparatus for a head of a windshield wiper of claim 6, wherein the second connecting unit comprises a second optical axis and a second linear bearing, the third mounting seat has a mounting hole formed therethrough, the second linear bearing is mounted in the mounting hole, one end of the second optical axis is connected to the jig mounting plate, and the other end of the second optical axis passes through the second linear bearing and is exposed to the outside.
8. The reshaping device for a wiper blade head of an automobile of claim 7, further comprising a hole enlarging component mounted on the third mounting seat for enlarging a hole of the wiper blade head, wherein the third mounting seat has a first through hole, the jig mounting plate has a second through hole, the wiper blade head jig has a third through hole, the first through hole, the second through hole and the third through hole are concentrically arranged, and one end of the hole enlarging component sequentially passes through the first through hole, the second through hole and the third through hole to enlarge a hole of the wiper blade head placed on the wiper blade head jig.
9. The automotive wiper head shaping device of claim 8 wherein the reaming assembly comprises a reaming member and a retaining member, wherein:
the second mounting seat is provided with a fourth through hole, one end of the limiting piece penetrates through the fourth through hole to be connected with the third mounting seat, and the other end of the limiting piece is provided with a clamping portion which is used for limiting the displacement of the third mounting seat along the vertical direction under the action of the elastic piece;
the reaming piece is used for reaming processing the one end of the wiper rod head sequentially passes through the fourth through hole, the first through hole, the second through hole and the third through hole to act on the wiper rod head, and the other end of the wiper rod head is connected with the limiting piece.
10. The shaping device for a wiper blade head of an automobile according to any one of claims 1 to 9, further comprising a detecting member provided on the base on a side of the carrier device, the detecting member being configured to detect the presence or absence of a wiper blade head on the carrier device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220476399.0U CN216993042U (en) | 2022-03-04 | 2022-03-04 | Automobile windshield wiper pole head shaping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220476399.0U CN216993042U (en) | 2022-03-04 | 2022-03-04 | Automobile windshield wiper pole head shaping device |
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| Publication Number | Publication Date |
|---|---|
| CN216993042U true CN216993042U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220476399.0U Active CN216993042U (en) | 2022-03-04 | 2022-03-04 | Automobile windshield wiper pole head shaping device |
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| Country | Link |
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| CN (1) | CN216993042U (en) |
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- 2022-03-04 CN CN202220476399.0U patent/CN216993042U/en active Active
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