Ejection system

Abstract

The invention discloses an ejection system which comprises a base, an ejection mechanism, a control mechanism and a motor driving mechanism, and the motor driving mechanism is connected with and used for driving the control mechanism. The motor driving mechanism is composed of a driving source, the control mechanism comprises an incomplete gear and a ratchet wheel assembly, the incomplete gear comprises a gear part and a toothless part, and the incomplete gear and the ratchet wheel assembly are coaxially installed and connected to the output end of the driving source so that the driving source can drive the incomplete gear and the ratchet wheel assembly to rotate in the first direction at the same time. The ratchet wheel assembly is used for achieving locking when the incomplete gear rotates in the second direction, and the second direction is opposite to the first direction. The ejection mechanism comprises a rack assembly and an ejection assembly, the rack assembly is connected to the ejection assembly in a linear movement mode, the rack assembly is meshed with the gear part, and ejection potential energy is provided through the ejection assembly so that ejection can be triggered when the rack assembly is matched with the toothless part. The high-load requirement can be met, and a driving source and a control mechanism can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of ejection devices, and in particular to an ejection system. Background Art

[0002] With the continuous advancement of modern engineering technology and the rapid growth of demand in multiple fields, catapults, as a key technology for efficient power release, have been widely used in multiple industries such as aerospace, military equipment, unmanned systems, and rescue. The core function of the catapult is to achieve rapid startup or deployment of objects or systems through rapid energy release, which has extremely high application value. Whether it is in the launch of spacecraft, the rapid deployment of military weapons, or the rapid deployment of rescue equipment in emergency rescue missions, catapults play a vital role. With the continuous development of technology, the requirements of these application scenarios are gradually developing towards higher efficiency, higher precision, and higher reliability. Especially when dealing with complex environments and high-load operations, the performance, reliability, and energy efficiency requirements of the catapult are becoming more stringent, which has promoted the continuous research and development of more efficient and stable catapult technologies.

[0003] Existing traditional ejection devices mostly rely on pneumatic, hydraulic, or electric drive systems. Pneumatic and hydraulic systems are widely used in the military and aerospace fields because they can provide large thrust, and they perform particularly well in tasks that require heavy loads or rapid launch. However, these systems are usually complex in structure, difficult to maintain, and have high requirements for the working environment. Factors such as temperature, humidity, and environmental pollution may affect their stability and safety. In addition, pneumatic and hydraulic systems also have the problem of high energy consumption. Especially during long-term use or high-frequency operation, there may be a risk of efficiency degradation and system failure.

[0004] Electric ejection systems have obvious advantages in terms of control accuracy and response speed, and are particularly suitable for scenarios with high precision requirements. Electric drive can accurately control the release of ejection force, adapt to different operating conditions, and can be adjusted more flexibly through the electronic control system. However, due to the low energy density of the electric system, its power output is limited by the battery and power system, making it difficult to meet the needs of high-load and high-frequency ejection. Especially in some high-load environments that require long-term, rapid and repeated ejections, existing electric ejection devices often face performance bottlenecks and cannot fully utilize their advantages.

[0005] In addition, traditional ejection device designs often require the coordinated work of multiple drive sources, including a main drive source for the ejection function and a drive source for locking. These multiple drive sources not only increase the complexity and overall cost of the system, but also make coordinated control more difficult. In some high-frequency and high-load application scenarios, the drive source used for locking is subject to extremely high load pressure and its performance requirements are extremely high. How to design an ejection device that can meet high load requirements while simplifying the drive source and control system has become an urgent problem to be solved in the current technical field.

[0006] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention proposes an ejection system that can meet high load requirements while simplifying the drive source and control mechanism.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The present invention discloses an ejection system, comprising a base, an ejection mechanism, a control mechanism and a motor drive mechanism, wherein the ejection mechanism, the control mechanism and the motor drive mechanism are respectively mounted on the base, and the motor drive mechanism is connected to and used to drive the control mechanism; wherein the motor drive mechanism is composed of a driving source, the control mechanism comprises an incomplete gear and a ratchet assembly, the incomplete gear comprises a gear portion and a toothless portion, the incomplete gear and the ratchet assembly are coaxially mounted and connected to the output end of the driving source, so that the driving source can simultaneously drive the incomplete gear and the ratchet assembly to rotate about a first direction, the ratchet assembly is used to achieve locking when the incomplete gear rotates about a second direction, the second direction being opposite to the first direction; the ejection mechanism comprises a rack assembly and an ejection assembly, the rack assembly is linearly movably connected to the ejection assembly, the rack assembly is meshed with the gear portion of the incomplete gear and provides ejection potential energy through the ejection assembly, so as to trigger ejection when the rack assembly cooperates with the toothless portion of the incomplete gear.

[0010] Preferably, the control mechanism also includes a first rotating shaft and a second rotating shaft, the ratchet assembly includes a ratchet and a ratchet lock, the ratchet and the incomplete gear are coaxially mounted and connected on the first rotating shaft, the first rotating shaft is connected to the output end of the driving source, the ratchet lock and the ratchet are mounted in a coaxial plane, the ratchet lock is mounted and connected to the second rotating shaft, and the center distance between the first rotating shaft and the second rotating shaft is less than the sum of the length of the ratchet lock itself and the radius of the pitch circle of the ratchet.

[0011] Preferably, the control mechanism also includes a first side plate, a second side plate and a top fixed plate, the first side plate and the second side plate are fixed on the base parallel to each other, the first rotating shaft and the second rotating shaft are respectively rotatably connected between the first side plate and the second side plate, and the cross-sections of the first rotating shaft and the second rotating shaft are both non-circular structures; the top fixed plate is connected between the top of the first side plate and the top of the second side plate.

[0012] Preferably, the ratchet assembly further comprises a first elastic member, one end of the first elastic member is connected to the ratchet lock, and the other end is connected to the top fixing plate.

[0013] Preferably, the ejection assembly includes an elastic potential energy unit and a linear guide unit, the linear guide unit is fixedly connected to the base, the rack assembly is linearly movably connected to the linear guide unit, the elastic potential energy unit is fixedly connected to the rack assembly, and the elastic potential energy unit and the linear guide unit are elastically connected.

[0014] Preferably, the linear guide rail unit includes a first base plate and a linear guide rail, the first base plate is fixedly connected to the base, the linear guide rail is fixedly connected to the first base plate, and the rack assembly is linearly movably connected to the linear guide rail.

[0015] Preferably, the elastic potential energy unit includes a second base plate, a first fixed column, a second fixed column and a second elastic member, the second base plate is fixedly connected to the rack assembly, the first fixed column is fixedly connected to the linear guide unit, the second fixed column is fixedly connected to the second base plate, and the two ends of the second elastic member are respectively connected to the first fixed column and the second fixed column.

[0016] Preferably, there are two of each of the first fixing column, the second fixing column and the second elastic member, the two first fixing columns are symmetrically connected to the two sides of the linear guide rail unit, the two second fixing columns are symmetrically connected to the two sides of the second base plate, and the two ends of each second elastic member are respectively connected to the first fixing column and the second fixing column on the same side.

[0017] Preferably, the second elastic member is an annular elastic band, the two ends of which are respectively sleeved on the first fixing column and the second fixing column, and the end of the second fixing column is provided with an axial hoop, which abuts against the outside of the annular elastic band.

[0018] Preferably, the rack assembly includes a rack connector and a rack, the rack is fixedly connected to the rack connector, the rack connector is linearly movably connected to the ejection assembly, and a module connecting portion is provided on the rack connector for connecting a functional module.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the ejection system disclosed in the present invention combines the unidirectional rotation of the ratchet assembly and the incomplete gear drive, is driven by a single drive source, and uses the ratchet assembly to assist when locking, thereby reducing the burden on the drive source. At the same time, the incomplete gear is disengaged from the meshing of the rack assembly, and the ejection operation is realized under the elastic potential energy of the ejection assembly, thereby realizing the combination of energy storage, locking and ejection work of a single drive source, reducing the burden on the drive source and simplifying the structure, and can also meet high load requirements.

[0020] In a further embodiment, the present invention also has the following beneficial effects:

[0021] (1) The passive locking method of the first elastic member, the ratchet lock and the ratchet is used to achieve self-locking, so that the force of the driving source of the ejection system is reduced when it is locked, thereby reducing damage to the driving source and the overall energy consumption of the system.

[0022] (2) The ejection assembly uses a second elastic member that is easily replaceable, and the ejection force and speed can be adjusted according to mission requirements.

[0023] (3) A modular connection part is provided at the end of the rack assembly, which can modularly install different components to adapt to different task requirements and has generalization. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a schematic structural diagram of an ejection system according to a preferred embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Schematic diagram of the explosion structure of the control mechanism of the ejection system;

[0026] Figure 3 yes Figure 1 A schematic diagram of the structure of the ejection mechanism of the ejection system;

[0027] Figure 4 It is a schematic diagram of the cooperation relationship between the ratchet and the ratchet lock;

[0028] Figure 5 yes Figure 1 Schematic diagram of the structure of the incomplete gear before the toothless part and the rack are matched in the ejection system;

[0029] Figure 6 yes Figure 5 A magnified schematic diagram of point A in the middle;

[0030] Figure 7 yes Figure 5 A magnified schematic diagram of point B in the middle;

[0031] Figure 8 yes Figure 1 Schematic diagram of the motor drive mechanism of the ejection system;

[0032] Figure 9 yes Figure 1 Schematic diagram of the structure of the base of the ejection system.

[0033] Description of Figure Numbers:

[0034] 10. Base; 11. Aluminum profile; 12. Fiberglass board;

[0035] 20. Ejection mechanism; 21. Rack assembly; 211. Rack connector; 2111. Module connector; 212. Rack; 22. Ejection assembly; 221. First base plate; 2211. Gasket; 222. Linear guide rail; 223. Second base plate; 224. First fixing post; 225. Second fixing post; 2251. Shaft hoop; 226. Second elastic member;

[0036] 30. Control mechanism; 31. Incomplete gear; 311. Gear portion; 312. Toothless portion; 32. Ratchet assembly; 321. Ratchet; 322. Ratchet lock; 323. First elastic member; 33. First side plate; 34. Second side plate; 35. Top fixing plate; 36. First rotating shaft; 37. Second rotating shaft; 38. Bearing seat;

[0037] 40. Motor drive mechanism; 41. Brush motor; 42. Coupling; 43. Copper column; 44. Motor support. DETAILED DESCRIPTION

[0038] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope of the present invention and its application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit / signal communication.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] The existing ejection system that uses elastic potential energy parts to store energy, if driven by a single drive source, needs to withstand a large force for a long time when locking. If two drive sources are used, it will lead to problems such as an increase in overall volume and increased costs. The preferred embodiment of the present invention combines the unidirectional rotation of the ratchet assembly with the incomplete gear drive, and is driven by a single motor drive source. The ratchet assembly is used to assist when locking, which reduces the burden on the motor drive source. At the same time, the incomplete gear is disengaged from the meshing of the rack, and the ejection operation is achieved under the elastic potential energy of the second elastic part, realizing the combination of energy storage, locking and ejection work of a single drive source, reducing the burden on the motor and simplifying the structure. On the other hand, the ejection part adopts a modular design, and different components can be installed at the end of the ejection part to adapt to different application scenarios. Compared with existing ejection devices, it has a wider range of applications.

[0043] like Figure 1 As shown, the preferred embodiment of the present invention discloses an ejection system, including a base 10, an ejection mechanism 20, a control mechanism 30 and a motor drive mechanism 40. The ejection mechanism 20, the control mechanism 30 and the motor drive mechanism 40 are respectively installed on the base 10, the control mechanism 30 is arranged above the ejection mechanism 20, and the motor drive mechanism 40 is connected to and used to drive the control mechanism 30; the motor drive mechanism 40 is composed of a motor drive source, combined with Figure 2The control mechanism 30 includes an incomplete gear 31 and a ratchet assembly 32. The incomplete gear 31 includes a gear portion 311 and a toothless portion 312. The incomplete gear 31 and the ratchet assembly 32 are coaxially mounted and connected to the output end of the motor drive source so that the motor drive source can simultaneously drive the incomplete gear 31 and the ratchet assembly 32 to rotate in a first direction. The ratchet assembly 32 is used to achieve locking when the incomplete gear 31 rotates in a second direction, which is opposite to the first direction. Figure 3 The ejection mechanism 20 includes a rack assembly 21 and an ejection assembly 22. The rack assembly 21 is connected to the ejection assembly 22 in a linearly movable manner. The rack assembly 21 is engaged with the gear portion 311 of the incomplete gear 31 and provides ejection potential energy through the ejection assembly 22 to trigger the ejection when the rack assembly 21 cooperates with the toothless portion 312 of the incomplete gear 31.

[0044] refer to Figure 2 The control mechanism 30 further includes a first side plate 33, a second side plate 34, a top fixing plate 35, a first rotating shaft 36, and a second rotating shaft 37. The first side plate 33 and the second side plate 34 are fixed to the base 10 in parallel with each other, and the top fixing plate 35 is connected between the top of the first side plate 33 and the top of the second side plate 34. The ratchet assembly 32 includes a ratchet 321, a ratchet lock 322, and a first elastic member 323. The ratchet 321 and the incomplete gear 31 are coaxially mounted on the first rotating shaft 36. The first rotating shaft 36 is connected to the output end of the motor drive source. The ratchet lock 322 and the ratchet 321 are mounted in a coaxial plane. The ratchet lock 322 is mounted on the second rotating shaft 37. Figure 4 The center distance d between the first rotating shaft 36 and the second rotating shaft 37 is less than the sum of the length b of the ratchet lock 322 and the radius a of the pitch circle of the ratchet wheel 321 (i.e., d < b + a). This prevents the ratchet wheel 321 from breaking through the ratchet lock 322 when engaged with the ratchet lock 322, thereby achieving self-locking. The first rotating shaft 36 and the second rotating shaft 37 are rotatably connected between the first side plate 33 and the second side plate 34, respectively. Both the first rotating shaft 36 and the second rotating shaft 37 have non-circular cross-sections. One end of the first elastic member 323 is connected to the ratchet lock 322, and the other end is connected to the top fixing plate 35.

[0045] In this embodiment, the first rotating shaft 36 and the second rotating shaft 37 are each square shaft, i.e., both have square cross-sections, so that the ratchet 321 and the partial gear 31 rotate with the rotation of the first rotating shaft 36, and the ratchet lock 322 rotates with the rotation of the second rotating shaft 37. The ends of the first rotating shaft 36 and the second rotating shaft 37 are respectively inserted into holes in the first side plate 33 and the second side plate 34 but do not contact the first side plate 33 and the second side plate 34. Bearing blocks 38 are respectively installed on the outer sides of the first side plate 33 and the second side plate 34 to ensure the rotation of the first rotating shaft 36 and the second rotating shaft 37. The top fixing plate 35 is connected between the top ends of the first side plate 33 and the second side plate 34 to fix the distance between the first side plate 33 and the second side plate 34. The second rotating shaft 37 is installed on the upper side of the first rotating shaft 36 so that the ratchet lock 322 can contact the deepest part of the tooth profile of the ratchet 321. The first elastic member 323 is a rubber tube, one end of which is connected to the top fixing plate 35 and the other end is connected to the U-shaped groove on the ratchet lock 322. Figure 5 and Figure 6 The ratchet lock 322 is under the tensile force of the rubber tube contraction (the tensile force direction is as follows Figure 6 Under the direction of the pulling force F), the second rotating shaft 37 rotates, and the front end of the ratchet lock 322 keeps a certain pressure on the ratchet 321 (the direction of the pressure is as shown in FIG. Figure 6 The ratchet lock 322 and the ratchet 321 are locked together at a position C where the front end of the ratchet lock 322 contacts the ratchet 321. Figure 4 The contact position between the ratchet lock 322 and the ratchet 321 is position C. The angle θ between the first line a connecting the axis of the first rotating shaft 36 and position C and the second line b connecting the axis of the second rotating shaft 37 and position C is an obtuse angle. When the ratchet 321 rotates along the second direction, the ratchet lock 322 and the ratchet 321 are locked with each other. The second direction refers to Figure 6The first direction is the direction opposite to direction D. During operation, the incomplete gear 31 and the ratchet 321 rotate in the first direction, i.e., the motor drive source can only drive the incomplete gear 31 and the ratchet 321 to rotate in the first direction. If the incomplete gear 31 and the ratchet 321 rotate in the second direction, the ratchet lock 322 will form a self-locking state with the ratchet 321, preventing the incomplete gear 31 from rotating in the second direction. During operation, the incomplete gear 31 continues to rotate in the first direction until the toothless portion 312 engages with the rack assembly 21. The incomplete gear 31 and the rack assembly 21 are no longer engaged. At this point, the ejection assembly 22 will eject and continue to rotate in the first direction until the gear portion 311 of the incomplete gear 31 re-engages with the rack assembly 21, thereby performing the next energy storage-ejection operation. In this embodiment, the self-locking action of the ratchet lock 322 and the ratchet 321 prevents the incomplete gear 31 from rotating in the second direction.

[0046] In this embodiment, the angle of the gear portion 311 of the incomplete gear 31 is 300°, the angle of the toothless portion 312 is 60°, and the diameter of the toothless portion 312 is the diameter of the root circle of the gear portion 311. When the rack assembly 21 is engaged with the toothless portion 312, the control mechanism 30 and the ejection mechanism 20 are disengaged, achieving ejection. In other embodiments, the angles of the gear portion 311 and the toothless portion 312 can also be adjusted according to actual needs. For example, the angle of the gear portion 311 is 270° to 315°, and the corresponding angle of the toothless portion 312 is 45° to 90°.

[0047] The ejection assembly 22 includes an elastic potential energy unit and a linear guide unit. The linear guide unit is fixedly connected to the base. The rack assembly 21 is linearly movably connected to the linear guide unit. The elastic potential energy unit is fixedly connected to the rack assembly, and the elastic potential energy unit and the linear guide unit are elastically connected. Among them, the rack assembly 21 includes a rack connector 211 and a rack 212. The rack 212 is fixedly connected to the rack connector 211. The linear guide unit includes a first base plate 221 and a linear guide 222. The first base plate 221 is fixedly connected to the base 10. The linear guide 222 is fixedly connected to the first base plate 221. The rack connector 211 is linearly movably connected to the linear guide 222. The rack connector 211 is provided with a module connection portion 2111 for connecting the functional module. The elastic potential energy unit includes a second base plate 223, a first fixed column 224, a second fixed column 225 and a second elastic member 226. The second base plate 223 is fixedly connected to the rack assembly 21, the first fixed column 224 is fixedly connected to the first base plate 221, the second fixed column 225 is fixedly connected to the second base plate 223, and the two ends of the second elastic member 226 are respectively connected to the first fixed column 224 and the second fixed column 225.

[0048] Specifically, there are two first fixing posts 224, two second fixing posts 225, and two second elastic members 226. The two first fixing posts 224 are symmetrically connected to the two sides of the first base plate 221, and the two second fixing posts 225 are symmetrically connected to the two sides of the second base plate 223. The two ends of each second elastic member 226 are respectively connected to the first fixing post 224 and the second fixing post 225 located on the same side. The second elastic member 226 is an annular elastic band, the two ends of which are respectively sleeved on the first fixing post 224 and the second fixing post 225. The end of the second fixing post 225 is provided with a shaft hoop 2251, which abuts against the outside of the annular elastic band 226 to prevent it from falling off. The second elastic member 226 can also be specifically made of a rubber tube.

[0049] There are four racks 212, which are installed in a straight line on the upper side of the rack connector 211. The rack connector 211 is installed on the upper end of the linear guide 222 and can move linearly with the linear guide 222. The linear guide 222 is installed on the first base plate 221, and the second base plate 223 is installed on the bottom side of the rack connector 211. Among them, the second elastic member 226 is used to provide tension to move the rack connector 211. When the rack 212 fixed to the rack connector 211 moves toward the rear side, the second elastic member 226 is stretched and has elastic potential energy, such as Figure 7 As shown, when the rack 212 rotates to engage the toothless portion 312 of the incomplete gear 31, the incomplete gear 31 disengages from the rack 212, thereby enabling rapid ejection under the action of the second elastic member 226. The rearward direction refers to the direction from the second base plate 223 relative to the first base plate 221. The end of the rack connector 211 away from the second base plate 223 is a module connection portion 2111, which can be connected to different modules to achieve different task requirements. For example, connecting it to a shovel can achieve high-speed and high-force scooping, and connecting it to a flat shell can achieve ejection and pushing.

[0050] In this embodiment, the linear guide rail 222 adopts a three-fold structure, which can improve the stability of the linear rapid movement of the ejection member, and realize rapid movement by using a bistable mechanism through the ratchet 321 and the first elastic member 323.

[0051] A spacer 2211 is provided below the first base plate 221. The spacer 2211 allows the height of the rack assembly 21 to be adjusted to ensure a sufficient distance between the incomplete gear 31 and the rack 212 for meshing engagement. In this embodiment, the first side plate 33 and the second side plate 34 are also secured to the first base plate 221 in parallel with each other via fasteners, thereby indirectly securing the base 10.

[0052] like Figure 8As shown, the motor drive mechanism 40 consists of a motor drive source, which includes a brushed motor 41, a coupling 42, a copper column 43, and a motor support 44. The coupling 42 is mounted on the output shaft of the brushed motor 41 and locked with a jackscrew. The other end of the coupling 42 is connected to the first rotating shaft 36 of the control mechanism 30. The brushed motor 41 is mounted on the upper side of the motor support 44 and connected to the motor stator via six threads. There are two copper columns 43 mounted on the lower side of the motor support 44, and the other ends of the copper columns 43 are connected to the base 10. This motor drive source is mainly used to provide driving force for the control mechanism 30 and requires reliable stability when connected to the base 10.

[0053] like Figure 9 As shown, the base 10 comprises an aluminum profile 11 and a fiberglass board 12. Four aluminum profiles 11 are arranged in a square shape and connected to light holes in the fiberglass board 12 via screws. The fiberglass board 12 is mounted on the upper side of the square formed by the aluminum profiles 11 and serves as the primary support plane for the entire ejection system. Therefore, fiberglass is used to ensure its strength and reliability. Multiple light holes are provided in the fiberglass board 12 for modular connection with the other three modules (ejection mechanism 20, control mechanism 30, and motor drive mechanism 40).

[0054] The ejection system disclosed in the preferred embodiment of the present invention only requires a motor drive source to simultaneously achieve the two requirements of ejection energy storage and self-locking. The second elastic member 226 is used to provide the ejection assembly 22 with the energy required for ejection. The design of the second elastic member 226 can be easily replaced and can provide a balanced and stable thrust for the linear movement of the ejection mechanism 20. The control mechanism 30 and the ejection mechanism 20 are modularly designed and can cooperate with each other stably and reliably to ensure the distance between the two. The self-locking ability of the ratchet assembly 32 in the control mechanism 30 is passive and self-provided, and does not require an external active drive source. The design of the ejection mechanism 20 ensures its linear motion ability, stability and impact resistance, and can withstand ejection operations with large impact forces. In summary, the ejection system has the characteristics of tight integration, overall fixed stability, and is lightweight and highly integrated while reducing the number of components.

[0055] The ejection system disclosed in the preferred embodiment of the present invention has the following advantages:

[0056] (1) The ejection system is divided into four parts: control mechanism, ejection mechanism, motor drive mechanism and base, which can be connected modularly. The simplicity of the connection improves the stability of the structure.

[0057] (2) A design scheme in which locking and ejection are driven by the same drive source is adopted, and only a single motor is used as the drive source. The ejection energy reserve and locking are controlled by a single motor drive source, which reduces the use of the motor drive source and reduces the cost.

[0058] (3) The ratchet assembly and the incomplete gear are arranged coaxially, wherein the ratchet assembly is self-locking by a mechanical device, rather than providing a continuous torque by a motor drive source to maintain the stretched state of the second elastic member, that is, the maximum energy storage state, because if it is maintained by a motor, there will be problems such as instability, serious heating of the motor due to long-term stalling, and easy damage to the motor; therefore, the unidirectional rotation of the ratchet is used to achieve energy storage self-locking, which can reduce the burden on the motor drive source and the impact force required to be carried during locking.

[0059] (3) Modular design allows different functional parts to be installed at the end of the ejection mechanism to realize ejection operations in different scenarios, achieving wide-range universality and generalization.

[0060] (4) The second elastic member is connected between the two fixed columns, realizing a convenient and quick-change energy storage member design, which can adjust the ejection speed and ejection force according to needs.

[0061] (5) The ejection design based on incomplete gears and racks can achieve high-frequency ejection operations.

[0062] The background section of the present invention may contain background information about the problem or environment of the present invention rather than describing prior art by others. Therefore, the inclusion of content in the background section is not an admission by the applicant that the prior art is available.

[0063] The above description further details the present invention in conjunction with specific / preferred embodiments, and the specific implementation of the present invention should not be construed as being limited to these descriptions. Persons skilled in the art will appreciate that, without departing from the spirit of the present invention, they may make various substitutions or modifications to the described embodiments, and these substitutions or modifications should be considered to fall within the scope of protection of the present invention. Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples" indicates that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and assemble the different embodiments or examples described in this specification, as well as features from different embodiments or examples, without conflicting opinions. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications may be made herein without departing from the scope of the appended claims.

Claims

1. A ejection system, characterized in that: It includes a base, an ejection mechanism, a control mechanism and a motor drive mechanism, wherein the ejection mechanism, the control mechanism and the motor drive mechanism are respectively installed on the base, and the motor drive mechanism is connected to and used to drive the control mechanism; wherein, The motor drive mechanism is composed of a drive source, and the control mechanism includes an incomplete gear and a ratchet assembly. The incomplete gear includes a gear portion and a toothless portion. The incomplete gear and the ratchet assembly are coaxially mounted and connected to the output end of the drive source so that the drive source can simultaneously drive the incomplete gear and the ratchet assembly to rotate in a first direction. The ratchet assembly is used to achieve locking when the incomplete gear rotates in a second direction, which is opposite to the first direction. The ejection mechanism includes a rack assembly and an ejection assembly. The rack assembly is connected to the ejection assembly in a linearly movable manner. The rack assembly is engaged with the gear portion of the incomplete gear and provides ejection potential energy through the ejection assembly to trigger ejection when the rack assembly cooperates with the toothless portion of the incomplete gear.

2. The ejection system according to claim 1, characterized in that: The control mechanism also includes a first rotating shaft and a second rotating shaft, the ratchet assembly includes a ratchet and a ratchet lock, the ratchet and the incomplete gear are coaxially mounted and connected on the first rotating shaft, the first rotating shaft is connected to the output end of the driving source, the ratchet lock and the ratchet are mounted in a coaxial plane, the ratchet lock is mounted and connected to the second rotating shaft, and the center distance between the first rotating shaft and the second rotating shaft is less than the sum of the length of the ratchet lock itself and the radius of the pitch circle of the ratchet.

3. The ejection system according to claim 2, characterized in that: The control mechanism also includes a first side plate, a second side plate and a top fixed plate, the first side plate and the second side plate are fixed on the base in parallel with each other, the first rotating shaft and the second rotating shaft are respectively rotatably connected between the first side plate and the second side plate, and the cross-sections of the first rotating shaft and the second rotating shaft are both non-circular structures; the top fixed plate is connected between the top of the first side plate and the top of the second side plate.

4. The ejection system according to claim 3, characterized in that: The ratchet assembly further includes a first elastic member, one end of which is connected to the ratchet lock, and the other end of which is connected to the top fixing plate.

5. The ejection system according to claim 1, characterized in that: The ejection assembly includes an elastic potential energy unit and a linear guide unit. The linear guide unit is fixedly connected to the base. The rack assembly is linearly movably connected to the linear guide unit. The elastic potential energy unit is fixedly connected to the rack assembly, and the elastic potential energy unit and the linear guide unit are elastically connected.

6. The ejection system according to claim 5, characterized in that: The linear guide rail unit includes a first base plate and a linear guide rail, the first base plate is fixedly connected to the base, the linear guide rail is fixedly connected to the first base plate, and the rack assembly is linearly movably connected to the linear guide rail.

7. The ejection system according to claim 5, characterized in that: The elastic potential energy unit includes a second base plate, a first fixed column, a second fixed column and a second elastic member. The second base plate is fixedly connected to the rack assembly, the first fixed column is fixedly connected to the linear guide unit, the second fixed column is fixedly connected to the second base plate, and the two ends of the second elastic member are respectively connected to the first fixed column and the second fixed column.

8. The ejection system according to claim 7, characterized in that: There are two of the first fixed column, the second fixed column and the second elastic member respectively. The two first fixed columns are symmetrically connected to the two sides of the linear guide rail unit, and the two second fixed columns are symmetrically connected to the two sides of the second base plate. The two ends of each second elastic member are respectively connected to the first fixed column and the second fixed column on the same side.

9. The ejection system according to claim 7, characterized in that: The second elastic member is an annular elastic band, the two ends of which are respectively sleeved on the first fixing column and the second fixing column, and the end of the second fixing column is provided with an axial hoop, which abuts against the outside of the annular elastic band.

10. The ejection system according to claim 1, characterized in that: The rack assembly includes a rack connector and a rack, the rack is fixedly connected to the rack connector, the rack connector is linearly movably connected to the ejection assembly, and a module connecting portion is provided on the rack connector for connecting a functional module.

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