Patent Application
20240401917
The present disclosure relates to the technical field of shooting equipment, in particular to a target paper changing machine capable of collecting and releasing paper rolls front and back and accurately feeding paper, and a shooting system.
Currently, the target paper changing modes for military and police live-fire shooting training
mainly include erecting and falling target paper changing, slide-rail-type target paper changing, manual target paper changing and the like. However, the above-described target paper changing modes have the following shortcomings and disadvantages:
For the above reasons, Chinese patent CN114562911A discloses a target paper changing machine capable of being remotely controlled and realizing flexible target paper changing, a system and a target paper changing method, wherein a target paper backing plate of the target paper changing machine is arranged on an upper front wall of a frame, target paper moves along a front surface of the target paper backing plate under the control of a covering layer control mechanism, with the end being wound around a reel arranged inside the frame to realize releasing and collecting of the target paper. The solution of this patent has the following disadvantages: 1) devices for collecting and releasing the target paper are arranged at the back, and the layout mode that devices such as collecting and releasing reels and motors are arranged at the same side is not conducive to the smooth collection and release of the target paper, and there is a tendency for the target paper to become entangled at the collecting end and the releasing end; 2) the target paper is directly wound around the reel, and there is no structure for positioning and accuracy control over paper feeding, so that the accuracy of the target paper feeding cannot be realized, which easily leads to the looseness of the target paper and affects the shooting performance.
Therefore, it is necessary to address the shortcomings of the prior art with a target paper changing machine capable of collecting and releasing paper rolls front and back and accurately feeding paper, and a shooting system, so as to solve or alleviate one or more of the above problems.
In view of the above, the present disclosure provides a target paper changing machine capable of collecting and releasing paper rolls front and back and accurately feeding paper, and a shooting system, and solves the problems of inconvenient paper collecting and releasing and inaccurate feeding of target paper in the prior art by using a front-back arrangement and an accurate paper feeding mechanism.
In one aspect, the present disclosure provides a target paper changing machine capable of collecting and releasing paper rolls front and back and accurately feeding paper, including a paper releasing box, a paper collecting box, paper releasing equipment, paper collecting equipment, a backing plate assembly, target paper, an accurate paper feeding mechanism and a system control unit; wherein
the paper releasing box and the paper collecting box are arranged in parallel front and back; the backing plate assembly is arranged between the paper releasing box and the paper collecting box and arranged above the paper releasing box and the paper collecting box; the paper releasing equipment is arranged in the paper releasing box, and the paper collecting equipment is arranged in the paper collecting box; one end of the target paper is connected with the paper releasing equipment, and the other end of the target paper bypasses a front side and a rear side of the backing plate assembly and is connected with the paper collecting equipment; preferably, the target paper in front of and behind the backing plate assembly is arranged in parallel to the backing plate assembly.
the accurate paper feeding mechanism is arranged on the paper releasing equipment and/or the paper collecting equipment, and is configured to limit feeding process of the target paper in collecting and releasing processes, and collect feeding data;
the system control unit is connected to the paper releasing equipment, the paper collecting equipment and the accurate paper feeding mechanism.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the paper releasing equipment and the paper collecting equipment each include a reel, an adjustable speed motor and a steering drum; wherein the reel is in linkage connection with the adjustable speed motor, and the adjustable speed motor drives the reel to rotate; the target paper to be released or collected is wound around the reel and is released or collected along with the rotation of the reel.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the accurate paper feeding mechanism includes a plurality of rivets, a counting disk and a through-beam laser sensor;
the rivets are uniformly and fixedly arranged at a periphery of an end portion of the steering drum of the paper releasing equipment and/or the paper collecting equipment, and the rivets are matched with rivet holes formed in an edge of the target paper in diameter and spacing;
the counting disk is arranged outside the steering drum, is arranged in parallel to an end surface of the steering drum, and is fixedly connected with the steering drum;
a plurality of counting slits are uniformly formed in an outer edge of the counting disk, and the counting slits are in one-to-one correspondence to the rivets; the through-beam laser sensor is arranged at the outer edge of the counting disk and is configured to count the counting slits;
the through-beam laser sensor is connected to the system control unit and is configured to transmit counting data to the system control unit.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the through-beam laser sensor includes a U-shaped probe;
the outer edge of the counting disk is inserted into an opening of the U-shaped probe; the U-
shaped probe is fixedly connected to the paper releasing box and/or the paper collecting box;
the opening of the U-shaped probe is provided with a laser emitter on one side and a laser receiver on the other side; when any of the counting slits of the counting disk rotates to the U-shaped probe, the laser receiver receives a laser signal so as to realize counting.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the backing plate assembly includes a backing plate support frame, two quick-detachable support rods, a backing plate and a guide shaft;
the two quick-detachable support rods are arranged at two sides of the backing plate respectively and are fixedly connected with the backing plate; the guide shaft is arranged at a top of the backing plate, and two ends of the guide shaft are rotatably connected with the quick-detachable support rods at the corresponding ends respectively;
the backing plate support frame includes two vertical support rods and one horizontal support rod; the two vertical support rods are arranged at and fixedly connected with two ends of the horizontal support rod respectively; bottoms of the two vertical support rods are fixedly connected with upper surfaces of the paper releasing box and the paper collecting box, and top ends of the two vertical support rods are provided with longitudinal insertion holes; the two quick-detachable support rods are respectively inserted into the longitudinal insertion holes.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the target paper changing machine further includes a target paper roll changing and adjusting mechanism arranged at the reel;
the target paper roll changing and adjusting mechanism includes a first movable gear, a second movable gear, a first target paper roll mounting and dismounting structure, a second target paper roll mounting and dismounting structure, a beveled target paper support frame, and a third target paper roll mounting and dismounting structure; wherein
the first movable gear and the second movable gear are respectively inserted into two ends of a hollow target paper roll to play a role in fixing the target paper roll;
the second target paper roll mounting and dismounting structure is arranged below the first movable gear, and drives the movable gear to horizontally move leftward and rightward, so as to realize combination and complete separation of the movable gear and the hollow target paper roll;
the first target paper roll mounting and dismounting structure is arranged outside the first movable gear, and drives the movable gear to horizontally move slightly leftward and rightward, thereby adjusting a degree of combination between the movable gear and the hollow target paper roll;
the third target paper roll mounting and dismounting structure is arranged between the first movable gear and the second movable gear, is fixedly connected with the beveled target paper support frame, and drives the beveled target paper support frame to horizontally move forward and backward; the beveled target paper support frame is arranged below the target paper roll.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the first target paper roll mounting and dismounting structure includes a first adjusting knob, a vertical strong spring, a horizontal strong spring and a force steering assembly; a lower end of the first adjusting knob is connected with the vertical strong spring, a bottom of the vertical strong spring is connected with one end of the force steering assembly, the other end of the force steering assembly is connected with one end of the horizontal strong spring, and the other end of the horizontal strong spring is connected with the first movable gear.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the second target paper roll mounting and dismounting structure includes a first movable block, a first horizontal adjusting rod, two first positioning rods, a second adjusting knob, a first adjusting rod supporting block and a second adjusting rod supporting block; the first movable gear is arranged on the first movable block; the first movable block is internally provided with three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls; the first horizontal adjusting rod provided with an external thread is threadably inserted into the threaded hole, and the two first positioning rods with smooth surfaces are respectively inserted into the two positioning holes; an inner end of the first horizontal adjusting rod and inner ends of the two first positioning rods are connected with the first adjusting rod supporting block, the other ends of the two first positioning rods are connected with the second adjusting rod supporting block, and the other end of the first horizontal adjusting rod passes through the second adjusting rod supporting block and is then fixedly connected with the second adjusting knob.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the third target paper roll mounting and dismounting structure includes a second movable block, a second horizontal adjusting rod, two second positioning rods, a third adjusting knob, a third adjusting rod supporting block and a fourth adjusting rod supporting block;
the beveled target paper support frame is arranged on the second movable block; the second movable block is internally provided with three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls; the second horizontal adjusting rod provided with an external thread is threadably inserted into the threaded hole, and the two second positioning rods with smooth surfaces are respectively inserted into the two positioning holes; an inner end of the second horizontal adjusting rod and inner ends of the two second positioning rods are connected with the third adjusting rod supporting block, the other ends of the two second positioning rods are connected with the fourth adjusting rod supporting block, and the other end of the second horizontal adjusting rod passes through the fourth adjusting rod supporting block and is then fixedly connected with the third adjusting knob.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the target paper changing machine further includes a bullet collecting box arranged at a back side of the backing plate.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the bullet collecting box is a closed rectangular box, and two sides of a front wall are each provided with an outward-turned plate-shaped insertion lug; the back side of the backing plate is provided with two vertical insertion grooves arranged in parallel, which are open at the top and inward; the insertion lugs are inserted into the insertion grooves on the corresponding sides from top to bottom;
the front wall is made of a material that bullets can easily penetrate, and a back wall is made of a bulletproof material;
the bulletproof material is of a layered structure including a bullet-absorbing rubber material on the inner layer and a bulletproof steel plate on the outer layer.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the target paper changing machine further includes a lightweight bulletproof plate;
the lightweight bulletproof plate is arranged on a front wall of the paper releasing box and is made of a bulletproof material.
According to the above aspects and any possible implementation, there is further provided an implementation, wherein the bulletproof material includes a rubber bullet-absorbing plate and a bulletproof steel plate that are sequentially stacked in a direction of bullet firing.
In another aspect, the present disclosure provides a shooting system, including any one of the target paper changing machines capable of collecting and releasing paper rolls front and back and accurately feeding paper described above, an image acquisition device arranged in front of the target paper changing machine, and a sound generating device arranged on the target paper changing machine; the image acquisition device acquires a real-time shooting image and transmits the real-time shooting image to the system control unit of the target paper changing machine for processing to obtain a real-time shooting score, and the score is reported by the sound generating device.
Compared with the prior art, one of the above technical solutions has the following advantages or beneficial effects: the present disclosure adopts the design of the separated target paper collecting and releasing boxes arranged front and back, so that the complexity of winding and feeding the target paper is reduced, and the operating space is simpler and more convenient;
another one of the above technical solutions has the following advantages or beneficial effects: the present disclosure adopts a high-accuracy feeding control structure, so that accurate feeding can be achieved during each target paper changing, and in combination with a variable-speed adjusting motor, the tensioning degree of the target paper can be adjusted, so that the accuracy of paper feeding can be ensured, and at the same time, the target paper can be prevented from being loose or over-tensioned;
another one of the above technical solutions has the following advantages or beneficial effects: the bulletproof rubber plate and the bulletproof steel plate are combined to form a lightweight bulletproof plate, so as to achieve simple, effective and light protection for the boxes; another one of the above technical solutions has the following advantages or beneficial
effects: the present disclosure adopts a unique target paper roll changing and adjusting mechanism, which can adapt to target paper rolls of different diameters, realizing fast and accurate target paper roll changing, and can also adjust the assembling tension of the target paper roll to adapt to the optimal pulling force of the adjustable speed motor, and guarantee the flatness of the target paper; the means of fixing the target paper roll is exquisitely designed, so that the process of target paper changing is greatly simplified, and the winding is simpler;
another one of the above technical solutions has the following advantages or beneficial effects: the present disclosure adopts a portable frame design and lightweight materials, so that the target paper changing machine may be installed on a fixed target lane, and can meet the need for carrying by single soldier or organizations going out for training; the products may cover a wide range of domestic and foreign military shooting training activities, personal entertainment training, shooting competitive activities and other application scenarios, and have a broad market economic prospect.
Of course, it is not necessary for any product implementing the present disclosure to achieve all of the technical effects described above at the same time.
In order to illustrate the technical solutions of the embodiments of the present disclosure clearer, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained from these drawings for a person having ordinary skill in the art without inventive labor.
roll changing and adjusting mechanism according to an embodiment of the present disclosure;
Wherein, in the figures:
1, backing plate; 2, quick-detachable support rod; 3, backing plate support frame; 4, box top plate; 5, target paper roll releasing box; 6, target paper roll collecting box; 7, target paper roll changing and adjusting mechanism; 8, first reel; 9, lightweight bulletproof plate; 10, front adjustable speed motor; 11, first steering drum; 12, second steering drum; 13, back adjustable speed motor; 14, second reel; 15, system control unit; 16, target paper changing machine bottom wheel; 17, target paper; 18, guide shaft; 19, bullet collecting box;
a, rivet; b, counting disk; c, counting slit; d, through-beam laser sensor;
A, first adjusting knob; B, second adjusting knob; C, third adjusting knob; D, movable gear; E, beveled target paper support frame; F, hollow target paper roll.
For better understanding of the technical solutions of the present disclosure, detailed description will be made below to the embodiments of the present disclosure in conjunction with the accompanying drawings.
It should be clear that the described embodiments are only some, but not all, embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person having ordinary skill in the art without making inventive labor belong to the protection scope of the present disclosure.
As shown in
The paper releasing equipment is arranged in the target paper roll releasing box 5 and includes a first reel 8, a front adjustable speed motor 10 and a first steering drum 11, wherein the first reel 8 is in linkage connection with the front adjustable speed motor 10, and the front adjustable speed motor 10 drives the first reel 8 to rotate. A target paper roll to be released winds around the first reel 8, and rotates along with the first reel 8 for realizing the releasing of the target paper. The first steering drum 11 is arranged at the bottom of the target paper roll releasing box 5, and is close to one end of the backing plate support frame 3, and the released target paper bypasses the first steering drum 11, then passes through paper releasing slits formed in the target paper roll releasing box 5 and the box top plate 4, covers the front wall of the backing plate 1 from bottom to top, and is then connected to the paper collecting equipment.
The paper collecting equipment is arranged in the target paper roll collecting box 6 and includes a second reel 14, a back adjustable speed motor 13 and a second steering drum 12, wherein the second reel 14 is in linkage connection with the back adjustable speed motor 13, and the back adjustable speed motor 13 drives the second reel 14 to rotate. A target paper roll to be collected winds around the second reel 14, and rotates along with the second reel 14 for realizing the collecting of the target paper. The second steering drum 12 is arranged at the bottom of the target paper roll collecting box 6, and is close to one end of the backing plate support frame 3, and the target paper on the back wall of the backing plate passes through paper collecting slits formed in the target paper roll collecting box 6 and the box top plate 4 into the collecting box, bypasses the second steering drum 12, is then connected with the target paper roll to be collected, and is wound around the target paper roll under the rotation of the second reel 14.
The system control unit 15 is arranged at the back side of the target paper roll collecting box 6, corresponding to the right side of the target paper roll collecting box 6 in
The front and back ends of the first steering drum 11 are each provided with a plate-like internally-hollow body for guiding the target paper, the plate-like internally-hollow body is in a rectangular plate shape as a whole, is internally provided with a cavity having a rectangular section, and is open at two ends; the width of the plate-like internally-hollow body is slightly greater than the width of the target paper, and the thickness of the internally-hollow cavity is slightly greater than the thickness of the target paper. One end of the plate-like internally-hollow body at the front end of the first steering drum 11 is arranged adjacent to the target paper roll to be released (without affecting the rotation of the target paper roll), and the other end is arranged adjacent to the first steering drum 11 (without affecting the rotation of the first steering drum); one end of the plate-like internally-hollow body at the back end of the first steering drum 11 is arranged adjacent to the first steering drum 11 (without affecting the rotation of the first steering drum), and the other end is connected to the paper releasing slits formed in the target paper roll releasing box 5 and the box top plate 4. After the target paper roll is replaced with a new one, the released target paper passes through the box under the guiding action of the plate-like internally-hollow bodies at the two ends to facilitate subsequent operations.
The accurate paper feeding mechanism is arranged at the first steering drum, as shown in
The accurate paper feeding of the present disclosure is controlled in such a way that: by the design of the strap-type target paper 17, in combination with the use of the accurate paper feeding mechanism and the steering drum, the counting slits correspond to the rivets of the steering drum, the rivets a are driven to rotate when the steering drum rotates, when the rivets a pass through the rivet holes formed in the edge of the strap-type target paper, the counting disc b rotates synchronously, when the laser receiver of the through-beam laser sensor located on the right side of the counting disc receives the laser signal from the opposite side through the counting slit, a counting signal will be sent to the system control unit 15, and when the counting signals received by the system control unit 15 reach the number required for a target paper changing, accurate paper feeding control for single-time target paper changing is completed, and replacing for a new target roll or changing the moving direction of the target paper 17 is prompted.
In addition, the rivets and the rivet holes designed in the present disclosure can provide a certain power for the releasing of the target paper when the target paper is replaced with new target paper, and in combination with the above-mentioned plate-like internally-hollow body for guiding the target paper, the target paper guiding function can be further reinforced.
As a preferred embodiment, the accurate paper feeding mechanisms of the present disclosure may also be arranged at the first steering drum and the second steering drum at the same time, with the system control unit 15 recording the time point of each counting while counting. Since the distance of the target paper from the first steering drum to the front and back of the backing plate and then to the second steering drum is fixed under the same tension, the counting time interval of the two accurate paper feeding mechanisms is ideally fixed and, when the time interval gradually varies, it is indicated that the tension of the target paper bypassing the front and back of the backing plate has changed. Specifically, when the time difference between the counting time point at the first steering drum and the counting time point at the second steering drum becomes smaller, it is indicated that the tension of the target paper increases, on the contrary, when the time difference becomes larger, it is indicated that the target paper is loose, two judgment thresholds are set empirically, when the time difference becomes smaller and reaches the corresponding judgment threshold or when the time difference becomes larger and reaches the corresponding judgment threshold, then the system control unit 15 implements the adjustment of the tension of the target paper by controlling the rotation speeds of the two motors. By such judgment and adjustment, the accuracy of the target paper feeding is further ensured.
As a preferred embodiment, in the present disclosure, a bullet collecting box 19 is arranged on the back side of the backing plate, is specifically positioned between the backing plate and the target paper and is detachably assembled with the backing plate, and is a closed rectangular box, the left and right side of a front wall (i.e., a side wall adjacent to the backing plate) are provided with outwards-turned plate-shaped insertion lugs, respectively, and the back side of the backing plate is provided with two vertically and parallel insertion grooves which are open at the top and inward. In assembly, the insertion lugs are inserted into the insertion grooves on the corresponding sides from top to bottom, for realizing the quick assembly and quick disassembly of the bullet collecting box 19. The front wall (also referred to as the bullet-facing surface) of the bullet collecting box 19 is made of a rubber material through which a bullet can easily penetrate, and the back wall (also referred to as the bullet-blocking surface) of the bullet collecting box 19 is made of a bulletproof material. The bullet penetrates through the front wall, enters the bullet collecting box and is blocked by the back wall to complete the collection of the bullet. The bulletproof material of the back wall is of a two-layer structure, the first layer is a bullet-absorbing rubber material, and the second layer is a bulletproof steel plate, the first layer is an inner layer, and the second layer is an outer layer; the bullet is decelerated by the rubber material before the bullet is further intercepted and blocked by the bulletproof steel plate. Since the amount of bullets used in the shooting training is huge, the arranged bullet collecting box can efficiently collect the rejected bullets, and has a certain economic benefit. In addition, the bullet collecting box has functions of blocking the bullet to prevent the target paper that has been shot and overturned to the back side being hit by the bullet to destroy the performance, and realizing the verification and commemorative retention of the performance on the target paper. Under special circumstances, such as when the target paper is accidentally damaged, the verification function under special circumstances can be realized by disassembling and collecting the bullet collecting box used by a specific person or at a specific period of time, and comparing information such as the number and position of bullet holes in the front wall of the bullet collecting box, and the number of the collected bullets with the initial shooting information and the target paper information. Due to the collecting of the bullets, the shot bullets will not cause damage to things behind the target paper changing machine, which greatly improves the safety of the shooting range and broadens the application scene of the target paper changing machine.
The number of the target paper changing machine bottom wheels 16 is 4, 6 or 8, and the target paper changing machine bottom wheels are arranged at the bottom of the paper collecting and releasing box, including the four corners of the bottom of the box and other intermediate positions where the overall balance can be ensured. By means of the target paper changing machine bottom wheels, the movement of the entire target paper changing machine is achieved by thrust. The target paper changing machine bottom wheels 16 are universal wheels with locking mechanisms, after the target paper changing machine bottom wheels are pushed to a predetermined position, the rotational performance of the wheels is controlled by means of the locking mechanisms, so that the whole target paper changing machine can be locked in this position. The locking mechanism is a conventional prior art, which is not limited by the present disclosure and can be realized by any existing locking structure.
The target paper roll changing and adjusting mechanism 7, as shown in
As a preferred embodiment, in the present disclosure, a lightweight bulletproof plate 9 is arranged on the front wall of the box, that is, the front wall of the target paper roll releasing box 5, and consists of a rubber bullet-absorbing plate and a bulletproof steel plate, wherein the rubber plate can decelerate the bullet for effectively preventing ricocheting of the bullet from accidentally injuring the shooting trainee, and the bulletproof steel plate on the inner layer can perform effective protection for the box of the target paper changing machine. This arrangement has the advantage of light weight, compared with enabling the box to be made of a bulletproof material having the required rigidity, and avoids the problem that the whole target paper changing machine is too heavy and inconvenient to move and transport due to the weight of the bulletproof steel plate.
As a preferred embodiment, a wireless communication assembly is arranged in the system control unit 15 of the present disclosure, so as to enable the system control unit 15 to be remotely controlled, a remote terminal can receive the operating parameters of the motors in the target paper changing machine, the tension of the target paper on the front and back of the backing plate, and other operating parameters, and can transmit commands input by the remote terminal to the system control unit 15 to further adjust the operating parameters of the motors. This long-distance wireless remote control target paper changing enables users to change target paper in shooting training at different distances through a remote controller, and cooperate to more quickly dismount old target paper and mount new target paper, thus improving shooting training efficiency and management and maintenance efficiency.
The present disclosure also provides a flexible target paper appearance form, which facilitates the improvement of shooting training level. The various target paper changing forms designed by the present disclosure include, but are not limited to:
different types of shooting scenes can be experienced within one shooting training period, thus boosting the richness of shooting training;
As an application of the above-described target paper changing machine of the present disclosure, the present disclosure also provides a shooting system, including the target paper changing machine of the present disclosure, an image acquisition device arranged in front of the target paper changing machine, and a sound generating device arranged on the target paper changing machine, wherein the image acquisition device acquires a real-time shooting image and transmits the real-time shooting image to the system control unit of the target paper changing machine for processing to obtain a real-time shooting score, and the score is reported by the sound generating device.
The target paper changing machine capable of collecting and releasing paper rolls front and back and accurately feeding paper provided by the embodiment of this application has been introduced in detail above. The description of the above embodiments is only used to help understand the method of the present application and its core idea; in the meantime, a person having ordinary skill in the art may make changes in the specific implementation and application scope according to the idea of this application. To sum up, the content of this description should not be understood as limitations to this application.
It should also be noted that the terms “including”, “includes” or any other variation thereof are intended to cover non-exclusive inclusion, so that an article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or system. Without more restrictions, the element defined by the sentence “including one . . . ” does not exclude that there are other identical elements in the article or system including the element. “roughly” means that within the acceptable error range, those skilled in the art can solve the technical problems within a certain error range to basically achieve the technical effects.
The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms “a”, “said” and “the” used in embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates other meaning. In this application, the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, “center”, “horizontal”, “vertical” and the like indicate an orientation or positional relationship based on that shown in the drawings. Some of the above terms may be used to indicate other meanings than orientation or position, for example, the term “upper” may also be used to indicate a certain attachment or connection in some cases. The specific meaning of these terms in the present application may be understood on a case-by-case basis to a person having ordinary skill in the art. As used herein, the term “and/or” is merely a kind of association that describes an associated object and indicates that three kinds of relationships may exist, for example, A and/or B may indicate that A exists alone, both A and B exist, and B exists alone. In addition, the character “/” herein generally indicates that a contextual object is an “OR” relationship.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202310657074.1 | Jun 2023 | CN | national |
