Locking assembly and locking air cylinder

Abstract

The invention discloses a locking assembly and a locking air cylinder, and relates to the technical field of material conveying, and the locking assembly comprises a base, a lever, a locking piece and an elastic assembly; the base is provided with two bracket walls which are oppositely arranged; the lever is rotationally connected between the two bracket walls; a first limiting groove, an unlocking position and a second limiting groove are sequentially formed in one side face of the lever. The locking piece movably penetrates through the bracket wall, and one end close to the lever is exposed out of the bracket wall; the locking piece responds to rotation of the lever and is inserted into the first limiting groove or the second limiting groove so as to prevent the lever from rotating. The elastic assembly is connected with the locking piece and the base and provides reset acting force enabling the locking piece to be far away from the lever, so that the locking piece is separated from the first limiting groove or the second limiting groove and abuts against the unlocking position. According to the scheme, the single lever with the double limiting grooves is adopted to be matched with the single locking piece, the locking function in the forward direction and the reverse direction is achieved, the step of adjusting a locking device to adapt to different locking directions is omitted, and the overall mechanical structure is simplified.

Description

Technical Field

[0001] This application relates to the field of material conveying technology, and in particular to a locking component and a stop cylinder. Background Technology

[0002] As a pneumatic actuator, the stop cylinder is widely used in automated production lines, assembly stations, and material handling systems. Its core function is to position and lock moving parts. Common stop cylinders typically employ a mechanical structure that combines a lever and a locking pin. When a moving part (such as a pallet) triggers the lever, the locking pin engages with a limiting structure on the lever under the force of a spring, thereby achieving unidirectional mechanical locking to ensure the stability of the moving part in a preset position.

[0003] However, the aforementioned existing technical solutions still have shortcomings in practical applications. When the operating conditions require the stop cylinder to have locking capability in both forward and reverse motion directions, it is usually necessary to manually adjust or replace the position of key locking components such as the locking pin to adapt to different locking directions. This not only makes the overall structure of the stop cylinder more complex, but also brings inconvenience to equipment debugging, maintenance, and rapid production changeover, thus adversely affecting the operating efficiency and applicability of automated equipment. Therefore, there is an urgent need for a stop cylinder solution with a more streamlined structure that can adaptively achieve reliable bidirectional locking. Summary of the Invention

[0004] The main purpose of this application is to propose a locking component that aims to solve the technical problem that current stop cylinders require adjustment or replacement of the locking device to achieve bidirectional locking, resulting in a complex structure, inconvenient operation and maintenance, and hindering rapid production changeover.

[0005] To achieve the above objectives, this application proposes a locking component, comprising:

[0006] The base has two support walls that are arranged opposite each other; A lever is rotatably connected between the two support walls; one side of the lever has a first limiting groove and a second limiting groove spaced apart, and an unlocking position is formed between the first limiting groove and the second limiting groove; A locking member is movably mounted on one of the support walls, with one end of the locking member protruding from the support wall near the lever; the locking member is inserted into the first limiting groove or the second limiting groove in response to the rotation of the lever to prevent the lever from rotating; An elastic component is connected to the locking member and the base; the elastic component is used to provide a reset force to move the locking member away from the lever, so that the locking member disengages from the first limiting groove or the second limiting groove and abuts against the unlocking position, thereby releasing the lever from the locked state.

[0007] In one embodiment, the end of the locking member near the lever constitutes a locking portion, the locking portion being configured as a cone structure, and the diameter of the locking portion gradually decreasing along the direction close to the lever; The edge of the first limiting groove is provided with a first chamfer, and / or the edge of the second limiting groove is provided with a second chamfer.

[0008] In one embodiment, the depth of the first limiting groove is less than or equal to the length of the locking portion, and / or the depth of the second limiting groove is less than or equal to the length of the locking portion.

[0009] In one embodiment, the length of the first limiting groove is greater than or equal to the maximum end face diameter of the locking part, and / or the length of the second limiting groove is greater than or equal to the maximum end face diameter of the locking part.

[0010] In one embodiment, the shortest distance between the first limiting groove and the second limiting groove is greater than or equal to the minimum end face diameter of the locking part.

[0011] In one embodiment, the support wall has a first side and a second side disposed opposite to each other, the support wall has a guide through hole, and the lever is disposed opposite to the first side; The locking member includes a locking pin, which passes through the guide hole. One end of the locking pin near the lever constitutes a locking part, and the other end of the locking pin constitutes an actuating part. The elastic component is connected to the second side and the actuating part; the locking pin responds to the rotation of the lever so that the locking part selectively engages with the unlocking position, the first limiting groove or the second limiting groove.

[0012] In one embodiment, the elastic component includes a transmission member and an elastic member; the transmission member is rotatably connected to the base, and the transmission member has a connecting portion connected to the actuating portion; the elastic member is connected to the base and the transmission member. The elastic element is used to apply an elastic force to the transmission element to drive the transmission element to rotate in a first direction, thereby pushing the locking pin to move in a direction closer to the lever through the connecting part.

[0013] In one embodiment, the actuating part is provided with a transmission slot; the connecting part is configured as a fork-shaped structure, and the fork-shaped structure engages with the transmission slot.

[0014] In one embodiment, the transmission member has a first end and a second end disposed opposite to each other, the first end constituting the connecting portion and the second end constituting the actuating arm body, and the middle portion of the transmission member is rotatably connected to the base; the actuating arm body responds to an external reset force to drive the transmission member to overcome the elastic force and rotate in a second direction, so as to pull the locking pin to move away from the lever through the connecting portion.

[0015] In one embodiment, the transmission component is formed by bending a sheet metal structural component, and the transmission component has a first bent arm, a second bent arm, and a bent lug. The first bending arm and the second bending arm have a preset bending angle. One end of the first bending arm is connected to one end of the second bending arm. The other end of the first bending arm constitutes the connecting part, and the other end of the second bending arm constitutes the actuating arm. The bending lug has a preset bending angle with the first bending arm. One end of the bending lug is connected to the middle of the first bending arm, and the other end of the bending lug is rotatably connected to the base.

[0016] In one embodiment, the second side is provided with a connecting seat; the transmission member has a bent lug; the elastic member is a torsion spring; The elastic component further includes a connecting pin, one end of which forms a limiting shoulder, and the other end of which is connected to the connecting seat; the bent ear and the spring coil of the torsion spring are rotatably sleeved on the connecting pin; the movable arm of the torsion spring abuts against the side of the connecting portion facing away from the second side to apply the elastic force to the connecting portion.

[0017] In one embodiment, the elastic component further includes a sleeve; the connecting pin passes through and engages in the inner cavity of the sleeve, and the spring coil of the torsion spring is sleeved on the outer periphery of the sleeve.

[0018] In one embodiment, the lever is a triangular prism structure, the lever has a first side edge, a second side edge and a third side edge, the side between the first side edge and the second side edge forms a first side surface, the side between the second side edge and the third side edge forms a second side surface, and the side between the third side edge and the first side edge forms a third side surface. The first side edge is rotatably connected between the two support walls; the first limiting groove and the second limiting groove are arranged at intervals around the rotation axis of the first side edge on the edge of the first side edge.

[0019] This application also proposes a stop cylinder; please refer to [reference needed]. Figure 1The stop cylinder includes a cylinder body and a locking assembly as described above; The cylinder body has a cylinder body and a piston body; the piston body is connected to the base to drive the locking assembly to move closer to or away from the cylinder body.

[0020] In one embodiment, the elastic component has an actuating arm; during the process of the piston portion driving the locking component closer to the cylinder portion, the cylinder portion is used to abut against the actuating arm to drive the elastic component to apply the reset force to the locking member.

[0021] In one embodiment, the stop cylinder further includes an adjusting member, which is movably connected to the cylinder body in a direction toward or away from the actuating arm. During the process of the piston driving the locking assembly closer to the cylinder, the adjusting member is used to abut against the actuating arm.

[0022] The locking assembly proposed in this application integrates a first limiting groove, a second limiting groove, and an unlocking position located between them on the same lever's rotation path, and works in conjunction with a locking member continuously driven by an elastic component to construct a compact bidirectional mechanical locking mechanism. The locking member can be positioned in the unlocking position under normal conditions in response to the elastic force applied by the elastic component, so that the lever is in a freely rotatable unlocked state. When the lever is subjected to an external force from a moving part and rotates in the forward or reverse direction, the corresponding limiting groove on the lever will rotate to be opposite to the locking member. At this time, the locking member can be inserted into the corresponding limiting groove to prevent the lever from continuing to rotate and keep it in the current locked state, thereby realizing the mechanical locking of the locking assembly in two directions.

[0023] This solution uses a single lever with dual limiting grooves in conjunction with a single locking component to achieve locking functions in both forward and reverse directions. This eliminates the need to adjust or replace the locking device to adapt to different locking directions, simplifies the overall mechanical structure of the locking assembly, reduces operational complexity and maintenance costs, and facilitates rapid production changeover. Thus, it provides a reliable and efficient solution for applications in automated equipment requiring bidirectional positioning. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1A three-dimensional structural diagram of the stop cylinder provided in this application when it is in the unlocked state; Figure 2 for Figure 1 A partial structural diagram; Figure 3 A front view of the structure of the stop cylinder provided in this application when it is in the unlocked state; Figure 4 A three-dimensional structural diagram of the stop cylinder provided in this application when it is in the first locking state (positive locking); Figure 5 for Figure 4 A partial structural diagram; Figure 6 A front view of the structure of the stop cylinder provided in this application when it is in the first locking state (positive locking); Figure 7 A three-dimensional structural diagram of the stop cylinder provided in this application when it is in the second locking state (reverse locking); Figure 8 for Figure 7 A partial structural diagram; Figure 9 A front view of the structure of the stop cylinder provided in this application when it is in the second locking state (reverse locking); Figure 10 A front view of the piston portion of the cylinder body in a retracted state in one embodiment of the stop cylinder provided in this application. Figure 11 This is an exploded structural diagram of an embodiment of the locking component provided in this application; Figure 12 A schematic diagram of the lever structure in one embodiment of the locking component provided in this application; Figure 13 A schematic diagram of the locking pin in one embodiment of the locking assembly provided in this application.

[0026] Explanation of icon numbers: 100. Moving parts; 1. Base; 1a. First side; 1b. Second side; 11. Connecting seat; 12. Bracket wall; 111. Mounting hole; 2. Lever; 2a. First side edge; 2b. Second side edge; 2c. Third side edge; 2d. First side surface; 2e. Second side surface; 2f. Third side surface; 21. First limiting groove; 22. Second limiting groove; 23. Unlocking position; 24. Pivot connection hole; 211. First chamfer; 221. Second chamfer; 3. Locking components; 3a. Locking pin; 31. Locking part; 32. Actuating part; 321. Transmission slot; 4. Flexible components; 41. Transmission component; 41a. First bending arm body; 41b. Second bending arm body; 42. Elastic component; 42a. Torsion spring; 43. Connecting pin; 44. Elastic retaining ring; 45. Sleeve; 411. Connecting part; 411a. Fork-shaped structure; 412. Actuating arm body; 413. Bending ear; 431. Limiting shoulder; 432. Snap ring groove; 4131. Connecting through hole; 5. Cylinder body; 51. Cylinder block; 52. Piston section; 6. Adjusting components; 7. Rollers.

[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] As a pneumatic actuator, the stop cylinder is widely used in automated production lines, assembly stations, and material handling systems. Its core function is to position and lock moving parts. Common stop cylinders typically employ a mechanical structure that combines a lever and a locking pin. When a moving part (such as a pallet) triggers the lever, the locking pin engages with a limiting structure on the lever under the force of a spring, thereby achieving unidirectional mechanical locking to ensure the stability of the moving part in a preset position.

[0032] However, the aforementioned existing technical solutions still have shortcomings in practical applications. When the operating conditions require the stop cylinder to have locking capability in both forward and reverse motion directions, it is usually necessary to manually adjust or replace the position of key locking components such as the locking pin to adapt to different locking directions. This not only makes the overall structure of the stop cylinder more complex, but also brings inconvenience to equipment debugging, maintenance, and rapid production changeover, thus adversely affecting the operating efficiency and applicability of automated equipment. Therefore, there is an urgent need for a stop cylinder solution with a more streamlined structure that can adaptively achieve reliable bidirectional locking.

[0033] To address the aforementioned issues, this application proposes a locking assembly that uses a single lever with dual limiting grooves in conjunction with a single locking element to achieve locking functions in both forward and reverse directions. This eliminates the need to adjust or replace the locking device's position to accommodate different locking directions and simplifies the overall mechanical structure of the locking assembly.

[0034] Please see Figures 1 to 9 One embodiment of this application provides a locking component, including: The base 1 has two support walls 12 arranged opposite to each other; Lever 2 is rotatably connected between two support walls 12; one side of lever 2 has a first limiting groove 21 and a second limiting groove 22 spaced apart, and an unlocking position 23 is formed between the first limiting groove 21 and the second limiting groove 22. The locking member 3 is movably mounted on a support wall 12, with one end of the locking member 3 near the lever 2 protruding from the support wall 12; the locking member 3 is inserted into the first limiting groove 21 or the second limiting groove 22 in response to the rotation of the lever 2 to prevent the lever 2 from rotating. The elastic component 4 is connected to the locking member 3 and the base 1. The elastic component 4 is used to provide a reset force to move the locking member 3 away from the lever 2, so that the locking member 3 disengages from the first limiting groove 21 or the second limiting groove 22 and abuts against the unlocking position 23, thereby releasing the lever 2 from the locked state.

[0035] To facilitate the explanation of the solution in this embodiment, the following is now established: Figures 1 to 11 The coordinate system shown is used to visually represent each axis, movement path, and direction; this coordinate system can be used to describe the relevant schemes in subsequent embodiments, and will not be repeated here.

[0036] In this embodiment, the base 1 serves as the mounting foundation and support structure for the entire locking assembly, and the base 1 has two support walls 12 spaced apart along the X-axis. In practical applications, the base 1 can be used as follows: Figure 1 , Figure 4 and Figure 7 The movable part installed on the cylinder is shown to drive the locking assembly to move up and down along the Z-axis via the cylinder; the moving parts 100, such as the pallet, are usually above the cylinder for material conveying, transfer and other operations; when the cylinder drives the locking assembly to move up along the Z-axis to the high position, the lever 2 of the locking assembly will be located on the movement path of the moving part 100; when the cylinder drives the locking assembly to move down along the Z-axis to the low position, the lever 2 of the locking assembly will leave the movement path of the moving part 100.

[0037] Lever 2 can be set as follows Figure 2 , Figure 5 , Figure 8 The triangular prism structure shown has three side edges forming a first side edge 2a, a second side edge 2b, and a third side edge 2c. The lower first side edge 2a is rotatably connected between two support walls 12 by means of a pin, and its axis of rotation is parallel to the X-axis. The upper second side edge 2b and third side edge 2c are arranged sequentially along the positive Y-axis. In the initial state, the second side edge 2b is higher than the third side edge 2c on the Z-axis. The side surface between the first side edge 2a and the second side edge 2b forms a first side surface 2d, the side surface between the second side edge 2b and the third side edge 2c forms a second side surface 2e, and the side surface between the third side edge 2c and the first side edge 2a forms a third side surface 2f.

[0038] When the locking assembly is in the high position and lever 2 is in the movement path of moving part 100, such as Figure 4 and Figure 6 As shown, when the moving part 100 moves along the positive Y-axis and approaches the lever 2, the moving part 100 will contact the first side 2d and apply a first directional force to the lever 2. This first directional force can push the lever 2 to rotate counterclockwise relative to the base 1; Figure 7 and Figure 9 As shown, when the moving part 100 moves in the opposite direction along the Y-axis and approaches the lever 2, the moving part 100 will contact the second side 2e and apply a second directional force to the lever 2. This second directional force can push the lever 2 to rotate clockwise relative to the base 1.

[0039] A roller 7 can be installed on the second side ridge 2b, and the rotation axis of the roller 7 is parallel to the X-axis. During the contact between the moving part 100 and the lever 2, the rolling engagement between the roller 7 and the moving part 100 can reduce the direct wear caused by sliding friction between the moving part 100 and the lever 2.

[0040] The first limiting groove 21 and the second limiting groove 22 can be arranged at intervals around the rotation axis of the lever 2; specifically, as shown in the figure Figure 2 , Figure 5 and Figure 8 As shown, the first limiting groove 21 and the second limiting groove 22 can be disposed on the first side edge 2a and distributed below the rotation axis of the lever 2. The interval area between the first limiting groove 21 and the second limiting groove 22 constitutes the unlocking position 23.

[0041] In this embodiment, the locking member 3 can be set at any position on the support wall 12, and the corresponding first limiting groove 21 and second limiting groove 22 can also be set at any position on one side of the lever 2, as long as the movement range of the locking member 3 corresponds to at least part of the first limiting groove 21 and the second limiting groove 22. The specific position can be designed according to the actual situation, and this embodiment does not limit it.

[0042] The locking component 3 can be a pin, a locking block, a locking tongue, a limiting rod, or other devices with locking functions. The locking component 3 can be movably connected to one of the support walls 12 through shaft hole fitting, guide rail slider fitting, hinge fitting, etc. The movement direction of the locking component 3 should have at least a movement component pointing in the depth direction of the first limiting groove 21 and the second limiting groove 22, so as to ensure that the locking component 3 can be inserted into the first limiting groove 21 or the second limiting groove 22 when moving closer to the lever 2, and to ensure that the locking component 3 can be disengaged from the first limiting groove 21 or the second limiting groove 22 when moving away from the lever 2.

[0043] In some specific embodiments, a closed-loop through-hole or similar through-hole structure may be provided on the support wall 12. This through-hole structure extends from the side of the support wall 12 away from the lever 2 to the side of the support wall 12 facing the lever 2, and the through-hole structure faces the active areas of the first limiting groove 21, the second limiting groove 22, and the unlocking position 23. The locking member 3 can be movably connected to the through-hole structure through sliding fit, rotation fit, screw fit, etc., so that the end of the locking member 3 near the lever 2 can move closer to or away from the lever 2 as the locking member 3 moves relative to the support wall 12, thereby allowing the end of the locking member 3 near the lever 2 to correspondingly fit into the first limiting groove 21, the second limiting groove 22, or the unlocking position 23.

[0044] In some other specific embodiments, an open recessed structure such as a groove or cavity can be provided on the outer wall of the support wall 12. The recessed structure extends inward from the outer wall of the support wall 12 in the depth direction to a position on the support wall 12 opposite to the active areas of the first limiting groove 21, the second limiting groove 22, and the unlocking position 23. The recessed structure is connected to the side of the support wall 12 facing away from the lever 2 and the side of the support wall 12 facing the lever 2 in the length direction, respectively. The locking member 3 can be movably connected to the recessed structure by means of a corresponding guide mechanism in the form of sliding engagement, rotational engagement, hinge engagement, etc., so that the end of the locking member 3 near the lever 2 can approach or move away from the lever 2 as the locking member 3 moves relative to the support wall 12, thereby making the end of the locking member 3 near the lever 2 corresponding to the first limiting groove 21, the second limiting groove 22, or the unlocking position 23.

[0045] It should be noted that, for the specific structural form in which the locking member 3 is movably inserted into the support wall 12, in practical applications it is only necessary to ensure that the locking member 3 can pass through from the side of the support wall 12 away from the lever 2 to the side of the support wall 12 facing the lever 2, and that the end of the locking member 3 near the lever 2 protrudes from the support wall 12, so that the end of the locking member 3 near the lever 2 can move closer to or away from the lever 2 as the locking member 3 moves relative to the support wall 12. This embodiment does not make specific limitations on this.

[0046] In this embodiment, the end of the locking member 3 near the lever 2 can be cone-shaped, hemispherical, cylindrical, cuboid, etc. The specific structural form can be designed according to the actual situation, and this embodiment does not limit it.

[0047] In this embodiment, the elastic component 4 is connected to the locking member 3. The elastic component 4 provides a force to the locking member 3 in a direction orthogonal to the first direction, so that the locking member 3 moves away from the lever 2 and disengages from the first limiting groove 21 or the second limiting groove 22; or the elastic component 4 applies an elastic force toward the lever 2 to the locking member 3, so that the end of the locking member 3 near the lever 2 can be stably fixed at the corresponding position (first limiting groove 21, second limiting groove 22, or unlocking position 23). The elastic component 4 may include springs, sheet springs, elastic colloids, and other devices for providing elastic force, as well as matching adapters, transmission devices, etc. Any implementation of the elastic component 4 that can achieve the above objectives should be included within the scope of protection of this application. The specific implementation of the elastic component 4 can be determined according to the actual situation, and the embodiments in this specification do not limit it.

[0048] In this embodiment, the fixed portion of the elastic component 4 can be connected to the base 1, and the movable portion of the elastic component 4 can be connected to the locking member 3. The elastic component 4 can continuously apply an elastic force pointing towards the lever 2 to the locking member 3, so as to drive the locking member 3 to move in the direction close to the area where the first limiting groove 21, the second limiting groove 22, and the unlocking position 23 are located, so that the locking member 3 continuously abuts against the surface of the lever 2; based on this, when the lever 2 rotates to the point where the first limiting groove 21 is opposite to the locking member 3, the locking member 3 will be inserted into the first limiting groove 21 under the elastic force provided by the elastic component 4; when the lever 2 rotates to the point where the second limiting groove 22 is opposite to the locking member 3, the locking member 3 will be inserted into the second limiting groove 22 under the elastic force provided by the elastic component 4.

[0049] The elastic component 4 can also provide a reset force to the locking member 3 in response to an external driving action. For example, it can provide a reset force to the locking member 3 when the operator manually drives it or when the elastic component 4 is driven to move in the opposite direction by a driving component such as a cylinder. The direction of the reset force is opposite to the direction of the elastic force applied by the elastic component 4 to the locking member 3, so that the locking member 3 can overcome the elastic force and move away from the lever 2, thereby disengaging the locking member 3 from the first limiting groove 21 or the second limiting groove 22 and releasing the lever 2 from the locked state.

[0050] Furthermore, a reset mechanism can be provided on the base 1, and the reset mechanism is connected to the lever 2. The reset mechanism can provide a reset force to the lever 2 so that the lever 2 can be rotated to the unlocked state when it is not subjected to other forces, so that the unlocked position 23 is stably facing the locking member 3. The above-mentioned reset operation of the reset mechanism can be achieved by a spring, a damping member, a reset power cylinder, etc., which are not limited here.

[0051] Specifically, when lever 2 rotates forward to the first locked state in response to the first directional force, locking member 3 is opposite to the first limiting groove 21, and locking member 3 is inserted into the first limiting groove 21 in response to the elastic force applied by elastic component 4 to prevent lever 2 from rotating; when lever 2 rotates backward to the second locked state in response to the second directional force, locking member 3 is opposite to the second limiting groove 22, and locking member 3 is inserted into the second limiting groove 22 in response to the elastic force applied by elastic component 4 to prevent lever 2 from rotating.

[0052] Based on the above settings, refer to Figures 1 to 9 In this embodiment, the specific switching process for the locking component to achieve bidirectional locking is as follows: In the initial state, lever 2 is in the unlocked state under the action of the reset mechanism. At this time, the unlocked position 23 is opposite to the locking member 3. The locking member 3 will abut against the unlocked position 23 under the elastic force applied by the elastic component 4, so that lever 2 is stably held in the position as shown. Figures 1 to 3 The unlocked state is shown; when the moving part 100 moves along the positive Y-axis and approaches the lever 2, the moving part 100 will contact the first side 2d of the lever 2 and apply a first directional force to the lever 2. This first directional force can push the lever 2 to rotate counterclockwise relative to the base 1, that is, drive the lever 2 to rotate in the positive direction, so that the unlocking position 23 gradually moves away from the locking member 3 in the circumferential direction as the lever 2 rotates in the positive direction; Figures 4 to 6 As shown, when lever 2 rotates forward to the first locking state, locking member 3 is opposite to the first limiting groove 21. At this time, locking member 3 will move closer to lever 2 and insert into the first limiting groove 21 under the elastic force applied by elastic component 4. Through the snap-fit ​​between locking member 3 and first limiting groove 21, lever 2 can be prevented from continuing to rotate, thereby realizing the forward locking of the locking component. At this time, the first side 2d of lever 2 can be used to block the moving part 100 from continuing to move along the positive Y-axis.

[0053] When lever 2 is in the position as Figures 4 to 6 In the first locked state shown, if it is necessary to release the moving part 100, the elastic component 4 can be driven in the reverse direction by manual drive, cylinder drive, etc., so that the elastic component 4 provides a reset force to the locking member 3. The direction of this reset force is opposite to the direction of the elastic force of the elastic component 4, which can drive the locking member 3 to overcome the elastic force and move in the opposite direction, causing the locking member 3 to separate from the first limiting groove 21, so that the lever 2 can rotate clockwise under the action of the reset mechanism and reset to the position shown. Figures 1 to 3 The unlocked state is shown, and then the reset force of the elastic component 4 can be removed, allowing the locking member 3 to re-abut against the unlocked position 23 under the elastic force applied by the elastic component 4; at this time, the lever 2 will no longer block the moving part 100, and the moving part 100 can pass over the second side 2e of the lever 2 and continue to move along the positive Y-axis.

[0054] Reset lever 2 to its original position. Figures 1 to 3 In the unlocked state shown, when the moving part 100 moves in the opposite direction along the Y-axis and approaches the lever 2, the moving part 100 will contact the second side 2e of the lever 2 and apply a second directional force to the lever 2. This second directional force can push the lever 2 to rotate clockwise relative to the base 1, that is, drive the lever 2 to rotate in the opposite direction, so that the unlocking position 23 gradually moves away from the locking member 3 in the circumferential direction as the lever 2 rotates in the opposite direction; Figures 7 to 9 As shown, when lever 2 rotates in the reverse direction to the second locking state, locking member 3 is opposite to the second limiting groove 22. At this time, locking member 3 will move closer to lever 2 and insert into the second limiting groove 22 under the elastic force applied by elastic component 4. Through the snap-fit ​​between locking member 3 and second limiting groove 22, lever 2 can be prevented from continuing to rotate, thereby realizing the reverse locking of the locking component. At this time, lever 2 will not block the moving part 100. The moving part 100 can pass over the second side 2e of lever 2 and continue to move in the reverse direction along the Y axis.

[0055] When lever 2 is in the position as Figures 7 to 9 In the second locked state shown, if it is necessary to reset the lever 2, the elastic component 4 can be driven in the opposite direction by manual drive, cylinder drive, etc., so that the elastic component 4 provides a reset force to the locking member 3. The direction of this reset force is opposite to the direction of the elastic force of the elastic component 4, which can drive the locking member 3 to overcome the elastic force and move in the opposite direction, causing the locking member 3 to separate from the second limiting groove 22, so that the lever 2 can rotate counterclockwise under the action of the reset mechanism and reset to the position shown. Figures 1 to 3 The lock is in the unlocked state shown. Then the reset force of the elastic component 4 can be removed, allowing the locking member 3 to re-abut against the unlock position 23 under the elastic force applied by the elastic component 4.

[0056] Therefore, the locking assembly provided in this embodiment integrates a first limiting groove 21, a second limiting groove 22, and an unlocking position 23 located between the two on the same rotation path of the lever 2, and cooperates with the locking member 3 continuously driven by the elastic component 4 to construct a compact bidirectional mechanical locking mechanism. The locking member 3 can be positioned at the unlocking position 23 in normal state in response to the elastic force applied by the elastic component 4, so that the lever 2 is in an unlocked state that can rotate freely. When the lever 2 is subjected to the external force of the moving part 100 and rotates in the forward or reverse direction, the corresponding limiting groove on the lever 2 will rotate to be opposite to the locking member 3. At this time, the locking member 3 can be inserted into the corresponding limiting groove to prevent the lever 2 from continuing to rotate and keep it in the current locked state, thereby realizing the mechanical locking of the locking assembly in two directions.

[0057] This solution uses a single lever 2 with double limit grooves in conjunction with a single locking component 3 to achieve locking functions in both forward and reverse directions. This eliminates the need to adjust or replace the position of the locking device to adapt to different locking directions, simplifies the overall mechanical structure of the locking assembly, reduces operational complexity and maintenance costs, and facilitates rapid production changeover. Thus, it provides a reliable and efficient solution for applications in automated equipment requiring bidirectional positioning.

[0058] In one embodiment, refer to Figure 2 , Figure 5 , Figure 8 and Figure 12 The lever 2 has a triangular prism structure and has a first side edge 2a, a second side edge 2b and a third side edge 2c. The side between the first side edge 2a and the second side edge 2b forms the first side edge 2d, the side between the second side edge 2b and the third side edge 2c forms the second side edge 2e, and the side between the third side edge 2c and the first side edge 2a forms the third side edge 2f. The first side edge 2a is rotatably connected between the two support walls 12; the first limiting groove 21 and the second limiting groove 22 are arranged at intervals around the rotation axis of the first side edge 2a at the edge of the first side edge 2a.

[0059] Specifically, such as Figure 2 , Figure 5 and Figure 8 As shown, the first side ridge 2a is located below the second side ridge 2b and the third side ridge 2c. The first side ridge 2a can be provided with a pivot hole 24 that runs through the X-axis. The two ends of a rotating pin are respectively connected to the two support walls 12. The middle part of the rotating pin is located between the two support walls 12 and is fitted into the pivot hole 24. This allows the lever 2 to rotate relative to the base 1 through the rotating pin, and the rotation axis of the lever 2 is parallel to the X-axis. The first limiting groove 21 and the second limiting groove 22 are provided on the first side ridge 2a and distributed below the pivot hole 24. That is, the first limiting groove 21 and the second limiting groove 22 are distributed on the side of the pivot hole 24 away from the second side ridge 2e, and the first limiting groove 21 and the second limiting groove 22 both pass through the lower edge of the first side ridge 2a.

[0060] Based on the above settings, the distribution areas of the first limiting groove 21, the second limiting groove 22, and the unlocking position 23 can be staggered from the area on the lever 2 that is in direct contact with the moving part 100, ensuring that there is sufficient reserved space between them. This ensures that the linkage action between the moving part 100 and the lever 2, and the locking and unlocking actions between the locking member 3 and the lever 2 do not interfere with each other, thereby improving the reliability and stability of the locking assembly in completing the preset actions.

[0061] In one embodiment, refer to Figure 12 and Figure 13 The locking part 3 is formed by the end of the locking member 3 near the lever 2. The locking part 31 can be set as a cone structure, and the diameter of the locking part 31 can gradually decrease along the direction close to the lever 2.

[0062] In this embodiment, the locking part 31 can refer to the portion of the locking member 3 that is inserted into the first limiting groove 21 or the second limiting groove 22 when it is in the locked state. Of course, it is understood that in some embodiments, when the locking part 31 is partially inserted into the first limiting groove 21 or the second limiting groove 22, the locking part 31 may also be partially exposed in the first limiting groove 21 or the second limiting groove 22. The specific details can be determined according to the actual situation, and this embodiment does not limit this.

[0063] The structures of the first limiting groove 21 and the second limiting groove 22 can be configured to correspond to the aforementioned structure of the locking part 31. Specifically, in the first embodiment, the edge of the first limiting groove 21 is provided with a first chamfer 211; in the second embodiment, the edge of the second limiting groove 22 is provided with a second chamfer 221; and in the third embodiment, the edge of the first limiting groove 21 is provided with a first chamfer 211, and the edge of the second limiting groove 22 is also provided with a second chamfer 221.

[0064] Specifically, with Figure 1 , Figure 4 and Figure 7 Taking the orientation shown as an example, the diameter of the locking part 31 gradually decreases along the positive X-axis to form a cone structure. Correspondingly, the depth directions of the first limiting groove 21 and the second limiting groove 22 are both parallel to the X-axis. The edge of the first limiting groove 21 (i.e., the edge where the opening of the first limiting groove 21 intersects with the corresponding side of the lever 2) forms a first chamfer 211, and the edge of the second limiting groove 22 (i.e., the edge where the opening of the second limiting groove 22 intersects with the corresponding side of the lever 2) forms a second chamfer 221. The first chamfer 211 and the second chamfer 221 can be set as bevels or arc surfaces, which are used to eliminate sharp right-angle edges.

[0065] Based on the above configuration, when the edge of the first limiting groove 21 is provided with a first chamfer 211, the lever 2 is in the position as shown in the image. Figures 4 to 6In the first locking state shown, the locking part 31 is engaged in the first limiting groove 21. If the lever 2 is subjected to a force in the second direction, for example, if another moving component 100 moves in the opposite direction along the Y-axis and collides with the second side 2e of the lever 2, the lever 2 will rotate clockwise, causing the conical surface of the locking part 31 to engage with the first chamfer 211 of the first limiting groove 21. At this time, the contact pair formed by the conical surface of the locking part 31 and the first chamfer 211 will form a wedge-shaped engagement interface. On this wedge-shaped engagement interface, the force exerted by the lever 2 on the locking part 31 can be decomposed into a component force in the opposite direction along the X-axis. When this component force is sufficient to overcome the elastic force exerted by the elastic component 4 on the locking pin 3a, this component force can drive the locking pin 3a to move in the opposite direction along the X-axis, causing the locking part 31 to disengage from the first limiting groove 21, causing the lever 2 to rotate clockwise and return to its original position. Figures 1 to 3 The unlocked state shown indicates that the locking component can be automatically unlocked.

[0066] Similarly, when the edge of the second limiting groove 22 is provided with a second chamfer 221, the lever 2 is in the position as follows: Figures 7 to 9 In the second locking state shown, the locking part 31 is engaged in the second limiting groove 22. If the lever 2 is subjected to a force in the first direction, for example, if another moving component 100 moves along the positive Y-axis and collides with the first side 2d of the lever 2, the lever 2 will rotate counterclockwise, causing the conical surface of the locking part 31 to engage with the second chamfer 221 of the second limiting groove 22. At this time, the contact pair formed by the conical surface of the locking part 31 and the second chamfer 221 will form a wedge-shaped engagement interface. On this wedge-shaped engagement interface, the force exerted by the lever 2 on the locking part 31 can be decomposed into a component force in the opposite direction along the X-axis. When this component force is sufficient to overcome the elastic force exerted by the elastic component 4 on the locking pin 3a, this component force can drive the locking pin 3a to move in the opposite direction along the X-axis, causing the locking part 31 to disengage from the second limiting groove 22, causing the lever 2 to rotate counterclockwise and return to its original position. Figures 1 to 3 The unlocked state shown indicates that the locking component can be automatically unlocked.

[0067] It is understandable that when the edge of the first limiting groove 21 is provided with a first chamfer 211 and the edge of the second limiting groove 22 is provided with a second chamfer 221, when the locking part 31 is inserted into the first limiting groove 21, the locking part 31 can disengage from the first limiting groove 21 under the action of external load based on the wedge-shaped mating interface, thereby realizing the automatic unlocking of the locking part 31 from the first limiting groove 21; when the locking part 31 is inserted into the second limiting groove 22, the locking part 31 can also disengage from the second limiting groove 22 under the action of external load based on the wedge-shaped mating interface, thereby realizing the automatic unlocking of the locking part 31 from the second limiting groove 22.

[0068] Based on the above settings, the locking component can be automatically unlocked when the lever 2 in the locked state is subjected to a huge external load opposite to the locking direction. This effectively prevents the lever 2 and locking pin 3a from bending or breaking due to overload, thus playing a role in overload protection.

[0069] In one embodiment, refer to Figure 12 and Figure 13 The depth of the first limiting groove 21 can be less than or equal to the length of the locking part 31.

[0070] In one embodiment, refer to Figure 12 and Figure 13 The depth of the second limiting groove 22 can be less than or equal to the length of the locking part 31.

[0071] Specifically, such as Figure 12 As shown, the depth of the first limiting groove 21 refers to the dimension of the first limiting groove 21 in the direction of movement of the locking pin 3a, that is, the distance between the opening and the bottom of the first limiting groove 21 on the X-axis; similarly, the depth of the second limiting groove 22 refers to the dimension of the second limiting groove 22 in the direction of movement of the locking pin 3a, that is, the distance between the opening and the bottom of the second limiting groove 22 on the X-axis.

[0072] The length of the locking part 31 can refer to the height of the cone-shaped structure formed by the locking part 31. Specifically, when the locking part 31 refers to the portion of the locking member 3 inserted into the first limiting groove 21 and the second limiting groove 22 when it is in the locked state, the length of the locking part 31 can refer to the height of the cone-shaped portion of the cone-shaped structure formed by the locking part 31 that is inserted into the first limiting groove 21 and the second limiting groove 22 (excluding the portion of the locking part 31 exposed in the first limiting groove 21 and the second limiting groove 22).

[0073] In this embodiment, the depth of the first limiting groove 21 is set to be less than or equal to the length of the locking part 31. This ensures that the locking part 31 can fully contact the groove wall of the first limiting groove 21 to provide good load-bearing capacity. Furthermore, the large contact area between the locking part 31 and the first limiting groove 21 ensures the stability of their engagement, thereby improving the locking stability in the first locking state. Similarly, in this embodiment, the depth of the second limiting groove 22 is set to be less than or equal to the length of the locking part 31. This ensures that the locking part 31 can fully contact the groove wall of the second limiting groove 22 to provide good load-bearing capacity. Furthermore, the large contact area between the locking part 31 and the second limiting groove 22 ensures the stability of their engagement, thereby improving the locking stability in the second locking state.

[0074] In one embodiment, refer to Figure 12 and Figure 13 The length of the first limiting groove 21 is greater than or equal to the maximum end face diameter of the locking part 31.

[0075] In one embodiment, refer to Figure 12 and Figure 13 The length of the second limiting groove 22 is greater than or equal to the maximum end face diameter of the locking part 31.

[0076] Specifically, such as Figure 12 As shown, both the first limiting groove 21 and the second limiting groove 22 can extend circumferentially with the rotation axis of the lever 2 as the axis. The length of the first limiting groove 21 refers to the maximum distance of the first limiting groove 21 on the circumferential path, and the length of the second limiting groove 22 also refers to the maximum distance of the second limiting groove 22 on the circumferential path.

[0077] The maximum end face diameter of the locking part 31 can refer to the diameter of the end face of the cone structure formed by the locking part 31 away from the lever 2. Specifically, referring to the description in the above embodiment, when the locking part 31 refers to the part of the locking member 3 inserted into the first limiting groove 21 and the second limiting groove 22 when it is in the locked state, the maximum end face diameter of the locking part 31 can refer to the maximum diameter of the cone structure formed by the locking part 31 inserted into the first limiting groove 21 and the second limiting groove 22 (excluding the part of the locking part 31 exposed in the first limiting groove 21 and the second limiting groove 22).

[0078] In this embodiment, the length of the first limiting groove 21 is set to be greater than or equal to the maximum end face diameter of the locking part 31. This ensures that the locking part 31 can be accommodated in the first limiting groove 21, thereby ensuring the locking stability in the first locking state and preventing the locking part 31 from getting stuck at the opening of the first limiting groove 21 due to insufficient groove length. Similarly, in this embodiment, the length of the second limiting groove 22 is set to be greater than or equal to the maximum end face diameter of the locking part 31. This ensures that the locking part 31 can be accommodated in the second limiting groove 22, thereby ensuring the locking stability in the second locking state and preventing the locking part 31 from getting stuck at the opening of the second limiting groove 22 due to insufficient groove length.

[0079] The length of the first limiting groove 21 and the length of the second limiting groove 22 can be set to be equal or unequal, which is not limited here.

[0080] In one embodiment, refer to Figure 12 and Figure 13 The shortest distance between the first limiting groove 21 and the second limiting groove 22 is greater than or equal to the minimum end face diameter of the locking part 31.

[0081] In this embodiment, the shortest distance between the first limiting groove 21 and the second limiting groove 22 can be the minimum dimension of the unlocking position 23 in the moving direction of the locking part 31, or it can refer to the straight-line distance between two adjacent edges of the first limiting groove 21 and the second limiting groove 22.

[0082] The minimum end face diameter of the locking part 31 can refer to the diameter of the end face of the cone structure formed by the locking part 31 near the lever 2. Specifically, when the locking part 31 refers to the part of the locking member 3 inserted into the first limiting groove 21 and the second limiting groove 22 when it is in the locked state, the minimum end face diameter of the locking part 31 can refer to the minimum diameter of the cone structure formed by the locking part 31 inserted into the first limiting groove 21 and the second limiting groove 22 (excluding the part of the locking part 31 exposed in the first limiting groove 21 and the second limiting groove 22).

[0083] In this embodiment, the shortest distance between the first limiting groove 21 and the second limiting groove 22 is set to be greater than or equal to the minimum end face diameter of the locking part 31. When the lever 2 is in the unlocked state and the locking part 31 abuts against the unlocking position 23, it can ensure that the locking part 31 can stay stably in the unlocking position 23, avoiding the locking part 31 from accidentally sliding into any limiting groove due to insufficient contact area. This improves the stability and reliability in the unlocked state and can effectively prevent the occurrence of accidental locking action.

[0084] In one embodiment, refer to Figure 11 and Figure 12 The support wall 12 has a first side 1a and a second side 1b that are disposed opposite to each other, and the support wall 12 has a guide through hole. The lever 2 is disposed opposite to the first side 1a. The locking member 3 includes a locking pin 3a, which is inserted into the guide hole. The end of the locking pin 3a near the lever 2 constitutes the locking part 31, and the other end of the locking pin 3a constitutes the actuating part 32. The elastic component 4 is connected to the second side 1b and the actuating part 32; the locking pin 3a responds to the rotation of the lever 2 so that the locking part 31 selectively engages with the unlocking position 23, the first limiting groove 21 or the second limiting groove 22.

[0085] Specifically, with Figure 11 As shown in the example, the base 1 has two support walls 12 spaced apart along the X-axis. The right side of the support wall 12 on the left side forms the first side 1a, and the left side forms the second side 1b. A lever 2 is disposed between the two support walls 12 and can be rotated relative to the base 1 by means of a pin passing through the lever 2 and the two support walls 12. The support wall 12 on the left side has a guide hole that extends from the first side 1a to the second side 1b. The middle part of the locking pin 3a is inserted into the guide hole and can move linearly relative to the base 1 along the X-axis. The end of the locking pin 3a extending out of the first side 1a forms a locking part 31, which faces the area where the first limiting groove 21, the second limiting groove 22, and the unlocking position 23 are located. The end of the locking pin 3a extending out of the second side 1b forms an actuating part 32.

[0086] The elastic component 4 may include springs, sheet metal, elastic colloids and other devices for providing elastic force, as well as matching adapters, transmission devices and other devices; the elastic component 4 may be connected to the second side 1b and the actuating part 32 by direct or indirect connection, so as to apply an elastic force along the positive X-axis to the actuating part 32, so that the locking pin 3a will have a tendency to move along the positive X-axis.

[0087] Based on the above settings, when lever 2 is in the following position... Figures 1 to 3 In the unlocked state, the locking part 31 will abut against the unlocked position 23 under the elastic force provided by the elastic component 4. Figures 4 to 6 As shown, when lever 2 is pushed by the moving part 100 moving in the positive direction along the Y-axis and rotates to the first locking state, the locking part 31 is opposite to the first limiting groove 21. At this time, the locking pin 3a will move in the positive direction along the X-axis under the elastic force provided by the elastic component 4, causing the locking part 31 to extend further out of the first side 1a and insert into the first limiting groove 21. Through the snap-fit ​​between the locking part 31 and the first limiting groove 21, the lever 2 can be prevented from continuing to rotate, thereby realizing the positive locking of the locking component. Figures 7 to 9 As shown, when lever 2 is pushed by the moving part 100 moving in the opposite direction along the Y-axis and rotates in the opposite direction to the second locking state, the locking part 31 is opposite to the second limiting groove 22. At this time, the locking pin 3a will move in the positive direction along the X-axis under the elastic force provided by the elastic component 4, causing the locking part 31 to extend further out of the first side part 1a and insert into the second limiting groove 22. Through the snap-fit ​​between the locking part 31 and the second limiting groove 22, the lever 2 can be prevented from continuing to rotate, thereby realizing the reverse locking of the locking component.

[0088] When the locking part 31 is engaged with the first limiting groove 21 or the second limiting groove 22, the elastic component 4 can be driven in the opposite direction of the elastic force by manual drive, cylinder drive, or other means. This causes the locking pin 3a to overcome the elastic force and move in the opposite direction along the X-axis, causing the locking part 31 to disengage from the first limiting groove 21 and the second limiting groove 22. This allows the lever 2 to be reset to its original position under the action of the reset mechanism. Figures 1 to 3 The lock is in the unlocked state shown. Then the reset force of the elastic component 4 can be removed, allowing the locking part 31 to move again along the positive X-axis and abut against the unlock position 23 under the elastic force applied by the elastic component 4.

[0089] Based on the scheme of this embodiment, the shaft hole matching method between the locking pin 3a and the guide through hole can provide a precise and reliable linear motion guide for the locking pin 3a, effectively preventing jamming and uneven wear during the movement process, and ensuring the smoothness and accuracy of the locking and unlocking actions. Secondly, based on the functional differentiation of the locking part 31 and the actuating part 32, the locking part 31 can be optimized for the performance and parameters involved in the locking operation (such as wear resistance, fitting accuracy, etc.), while the actuating part 32 can be set to a structure that facilitates connection with the elastic component 4, thereby further improving the reliability of the locking component in completing the locking and unlocking actions. In addition, by distributing the locking part 31 and the actuating part 32 on two sides of the base 1, the linkage action between the elastic component 4 and the actuating part 32 can be prevented from interfering with the locking and unlocking operations of the locking part 31.

[0090] In one embodiment, refer to Figure 1 , Figure 4 , Figure 7 and Figure 11 The elastic component 4 includes a transmission member 41 and an elastic member 42; the transmission member 41 is rotatably connected to the base 1, and the transmission member 41 has a connecting part 411, which is connected to the actuating part 32; the elastic member 42 is connected to the base 1 and the transmission member 41. The elastic element 42 is used to apply an elastic force to the transmission element 41 to drive the transmission element 41 to rotate in the first direction, thereby pushing the locking pin 3a to move in the direction close to the lever 2 through the connecting part 411.

[0091] In this embodiment, the transmission component 41 can be configured as a sheet metal part; the transmission component 41 can be rotatably connected to the corresponding position on the base 1 via pivoting connectors such as rivets.

[0092] The connecting part 411 is a structural part on the transmission member 41 specifically used to establish a power connection with the actuating part 32 of the locking pin 3a. The specific connection method between the connecting part 411 and the actuating part 32 can be flexibly set according to the actual situation; for example, the connecting part 411 can be set as a pin, a claw, a paddle, or other structural form, so as to cooperate with the groove, hole, shoulder, or other structures on the actuating part 32 through insertion, snapping, or abutment, thereby realizing the force transmission between the two, so that the rotational motion of the transmission member 41 can be effectively converted into the linear motion of the locking pin 3a.

[0093] The elastic element 42 is a device that provides the original elastic force, and can be a spring, sheet metal, elastic colloid, etc. The elastic element 42 is connected to the base 1 and the transmission element 41 in a specific manner, and its installation and operation are configured to continuously apply torque to the transmission element 41, which can cause the transmission element 41 to tend to rotate in a first direction.

[0094] In actual operation, the torque applied by the elastic element 42 causes the transmission element 41 to always have a tendency to rotate in the first direction. Since the connecting part 411 of the transmission element 41 is connected to the actuating part 32 of the locking pin 3a, the transmission element 41 will apply a driving force to the actuating part 32 through the connecting part 411. This driving force has at least a component force along the axial direction of the locking pin 3a. This component force can drive the locking pin 3a to move in the direction close to the lever 2. In this case, when the locking part 31 is opposite to any limiting groove or unlocking position 23, the locking part 31 can be inserted into the corresponding limiting groove or abut against the unlocking position 23 under the action of the above-mentioned component force, so that the lever 2 enters the corresponding locking state or unlocking state.

[0095] by Figure 11 As shown in the example, the transmission member 41 is rotatably connected to the second side 1b of the base 1. The rotation axis of the transmission member 41 can be parallel to the Y-axis. The transmission member 41 can generate a tendency to rotate in the clockwise direction under the elastic force of the elastic member 42. The connecting part 411 can be set at the highest point of the transmission member 41 and connected to the actuating part 32. In this way, the rotation tendency of the transmission member 41 can drive the connecting part 411 to apply a tangential force along the positive X-axis to the actuating part 32, thereby driving the locking pin 3a to move along the positive X-axis to realize the locking or unlocking operation of the lever 2.

[0096] In this embodiment, by setting the transmission component 41, the elastic force provided by the elastic component 42 can be converted into a driving force for the axial movement of the locking pin 3a. By changing the direction of the force, the force transmission path is optimized, which provides flexibility for arranging the devices for driving the locking pin 3a in a limited space. It is not necessary to stack all the driving components on the movement path of the locking pin 3a, which is conducive to achieving a compact overall structural layout.

[0097] In one embodiment, refer to Figure 1 , Figure 4 , Figure 7 , Figure 11 and Figure 13 The actuator 32 is provided with a transmission slot 321; the connecting part 411 is configured as a fork-shaped structure 411a, which engages with the transmission slot 321.

[0098] Specifically, such as Figure 12 and Figure 13As shown, the transmission groove 321 can be configured as an annular groove surrounding the locking pin 3a in the circumferential direction. The fork-shaped structure 411a can be disposed at the highest point of the transmission member 41; the fork-shaped structure 411a includes two arm-shaped portions spaced apart along the Y-axis, and an upward-opening receiving groove is formed between the two arm-shaped portions; the fork-shaped structure 411a can be engaged with the lower half of the transmission groove 321 from bottom to top, so that the portion of the actuating part 32 corresponding to the transmission groove 321 is accommodated in the receiving groove of the fork-shaped structure 411a, so as to conveniently lock the transmission member 41 and the locking pin 3a in the axial direction of the locking pin 3a.

[0099] Based on the above configuration, taking the rotation axis of the transmission component 41 as parallel to the Y-axis as an example, the transmission component 41 can generate a tendency to rotate in the clockwise direction under the elastic force of the elastic component 42. This can drive the fork-shaped structure 411a to move in the positive direction of the X-axis, so that the fork-shaped structure 411a abuts against the groove wall of the transmission slot 321 and applies a force in the positive direction of the X-axis to the actuating part 32. This can drive the locking pin 3a to move in the positive direction of the X-axis, so as to realize the locking or unlocking operation of the lever 2.

[0100] In this embodiment, the rotational motion of the transmission component 41 can be directly converted into the linear movement of the locking pin 3a along its axis through the snap-fit ​​engagement between the fork-shaped structure 411a and the transmission slot 321, thus realizing the conversion of motion form and efficient force transmission. Moreover, this snap-fit ​​engagement method allows the fork-shaped structure 411a to reliably complete the force transmission even with slight misalignment with the transmission slot 321, exhibiting good fault tolerance. In addition, this snap-fit ​​engagement method improves the connection convenience between the transmission component 41 and the locking pin 3a, and also facilitates subsequent disassembly, maintenance, and replacement.

[0101] In one embodiment, refer to Figure 1 , Figure 4 , Figure 7 and Figure 11 The transmission member 41 has a first end and a second end that are arranged opposite to each other. The first end forms a connecting part 411 and the second end forms an actuating arm 412. The middle part of the transmission member 41 is rotatably connected to the base 1. The actuating arm 412 responds to the external reset force and drives the transmission member 41 to overcome the elastic force and rotate in the second direction, so as to pull the locking pin 3a to move away from the lever 2 through the connecting part 411. The second direction is opposite to the first direction.

[0102] Specifically, such as Figure 11As shown, the transmission component 41 can be configured as a sheet metal part. The middle part of the transmission component 41 constitutes its main body. This main body can be rotatably connected to the second side 1b of the base 1 by means of pivoting connectors such as rivets. The upper side of the main body constitutes the first end. The first end is bent upward to form a connecting part 411. The connecting part 411 can be connected to the actuating part 32 based on the snap-fit ​​engagement between the fork-shaped structure 411a and the transmission slot 321 in the previous embodiment. The lower side of the main body constitutes the second end. The second end can be bent to the bottom of the base 1 to form an actuating arm 412.

[0103] Based on the above configuration, taking the rotation axis of the transmission component 41 as parallel to the Y-axis as an example, under normal conditions, the transmission component 41 can generate a clockwise rotation tendency under the elastic force of the elastic component 42. The rotation tendency of the transmission component 41 can drive the connecting part 411 to apply a force along the positive X-axis to the actuating part 32, thereby driving the locking pin 3a to move along the positive X-axis to realize the locking or unlocking operation of the lever 2. When the actuating arm 412 is subjected to an external reset force, such as Figure 1 , Figure 4 , Figure 7 and Figure 11 As shown, taking the actuator arm 412 being subjected to an external reset force along the Z-axis as an example, this external reset force can drive the actuator arm 412 to move upward, thereby causing the transmission component 41 to overcome the elastic force of the elastic component 42 and rotate in the counterclockwise direction. This, in turn, causes the connecting part 411 to apply a force in the opposite direction along the X-axis to the actuator part 32. For example, when the connecting part 411 is set as a fork-shaped structure 411a and is engaged with the transmission slot 321, the fork-shaped structure 411a can be driven to abut against the slot wall of the transmission slot 321 and apply a force in the opposite direction along the X-axis to the actuator part 32. This can drive the locking pin 3a to move in the opposite direction along the X-axis, causing the locking part 31 of the locking pin 3a to disengage from the first limiting slot 21 or the second limiting slot 22, so that the lever 2 is reset to the unlocked state, thereby realizing the unlocking operation of the locking component.

[0104] Based on the above unlocking principle, in practical applications, such as Figure 6 and Figure 10As shown, when the base 1 is installed on the movable part of the cylinder, the cylinder can drive the locking assembly to move up and down along the Z-axis. When the movable part of the cylinder is fully extended and the locking assembly is in a high position, if it is necessary to unlock the lever 2, the cylinder can drive the locking assembly to move downward, so that the actuating arm 412 located below the base 1 first contacts the fixed part of the cylinder. As the locking assembly continues to move downward, the fixed part of the cylinder will apply an external reset force along the Z-axis to the actuating arm 412, thereby resetting the lever 2 to the unlocked state. At the same time, for the lever 2 which is in the first locked state before unlocking, the lever 2 also leaves the movement path of the moving part 100 as the locking assembly moves downward during the above unlocking process, thereby making way for the moving part 100 while completing the unlocking operation, so that the moving part 100 can continue to move along the positive Y-axis above the lever 2.

[0105] Based on the above configuration, the transmission component 41 essentially forms a lever structure with the central main body as the fulcrum. This allows the actuating arm 412 to be forced by the retraction action of the cylinder and other supporting mechanisms. Based on the lever principle of the transmission component 41, automatic unlocking can be achieved by overcoming a large elastic force with a relatively small external reset force. This solution naturally combines the unlocking action with the standard reciprocating motion of the cylinder, eliminating the need for an additional independent drive source or complex control device, simplifying the system configuration and improving action coordination. Furthermore, the lever structure design of the transmission component 41 optimizes the spatial layout, allowing the actuating arm 412 to extend to the area below the base 1. This not only makes full use of space but also provides a convenient and direct contact point for applying the external reset force.

[0106] In one embodiment, refer to Figure 11 The transmission component 41 is formed by bending sheet metal structural parts, and the transmission component 41 has a first bent arm 41a, a second bent arm 41b and a bent ear 413. The first bending arm 41a and the second bending arm 41b have a preset bending angle. One end of the first bending arm 41a is connected to one end of the second bending arm 41b. The other end of the first bending arm 41a forms a connecting part 411, and the other end of the second bending arm 41b forms an actuating arm 412. The bent ear 413 and the first bent arm 41a have a preset bending angle. One end of the bent ear 413 is connected to the middle of the first bent arm 41a, and the other end of the bent ear 413 is rotatably connected to the base 1.

[0107] Specifically, the first bending arm 41a extends along the Z-axis, and the second bending arm 41b extends along the X-axis. The preset bending angle between the first bending arm 41a and the second bending arm 41b can be set to 90° so that the first bending arm 41a and the second bending arm 41b form an L-shaped structure. The end of the first bending arm 41a away from the second bending arm 41b forms a connecting part 411, and the end of the second bending arm 41b away from the first bending arm 41a forms an actuating arm 412. A bendable sheet structure can be provided in the middle of the first bending arm 41a. After bending, the sheet structure forms a bending ear 413. The bending ear 413 extends along the X-axis and is located above the second bending arm 41b. The end of the bending ear 413 away from the first bending arm 41a is rotatably connected to the base 1 about a rotation axis parallel to the Y-axis, so that the transmission component 41 as a whole can rotate about the base 1.

[0108] Based on the above structural design, the transmission component 41 can be formed by simply bending the sheet metal structural parts, thereby simplifying the manufacturing process of the transmission component 41.

[0109] In one embodiment, refer to Figure 11 The second side 1b is provided with a connecting seat 11; the transmission component 41 has a bent ear 413; the elastic component 42 is a torsion spring 42a; The elastic component 4 also includes a connecting pin 43, one end of which forms a limiting shoulder 431, and the other end of which is connected to the connecting seat 11; the bent ear 413 and the spring ring of the torsion spring 42a are rotatably sleeved on the connecting pin 43; the movable arm of the torsion spring 42a abuts against the side of the connecting part 411 facing away from the second side 1b to apply an elastic force to the connecting part 411.

[0110] Specifically, refer to Figure 11 The connecting seat 11 can refer to a boss or ear plate integrally formed on the base 1, and the connecting seat 11 can have a mounting hole 111 that runs through the Y-axis.

[0111] The bent ear portion 413 is provided with a connecting through hole 4131 that runs through along the Y-axis. The central axis of the connecting through hole 4131 is coaxial with the central axis of the mounting hole 111 of the connecting seat 11.

[0112] The elastic element 42 is specifically configured as a torsion spring 42a; the torsion spring 42a is a helical spring that stores and releases elastic potential energy through torsion, and has a hollow spring coil and an outwardly extending arm from the spring coil.

[0113] To facilitate the assembly of the aforementioned components, the elastic component 4 also includes a connecting pin 43. The connecting pin 43 can be configured as a stepped shaft-shaped pin, with its larger diameter end forming a limiting shoulder 431. During assembly, the smaller diameter end of the connecting pin 43 can pass sequentially along the positive Y-axis through the connecting through hole 4131 of the bent ear 413, the spring ring of the torsion spring 42a, and finally connect with the mounting hole 111 of the connecting seat 11. This allows the transmission component 41 and the torsion spring 42a to be axially limited between the limiting shoulder 431 and the connecting seat 11, ensuring that both the transmission component 41 and the torsion spring 42a can rotate around the connecting pin 43. The connection between the connecting pin 43 and the mounting hole 111 can be achieved through threaded connection, interference fit, or other methods. Figure 11 As shown, a retaining ring groove 432 can be provided at one end of the connecting pin 43 away from the limiting shoulder 431. The retaining ring groove 432 extends out of the connecting seat 11, and an elastic retaining ring 44 is installed in the retaining ring groove 432 so as to achieve axial limiting of the connecting pin 43 by the abutting cooperation between the elastic retaining ring 44 and the side wall of the connecting seat 11.

[0114] The torsion spring 42a typically has a fixed arm and a movable arm. The fixed arm can be fixed or abutted against a fixed position on the base 1 in a specific manner, such as by inserting it into a hole in the base 1 or by engaging it with a protrusion on the base 1; this is not limited here. The movable arm abuts against the side of the connecting portion 411 of the transmission member 41 facing away from the second side 1b. For example, the movable arm can abut against the side of the fork-shaped structure 411a facing away from the second side 1b. In this way, the movable arm can apply an elastic force along the positive X-axis to the fork-shaped structure 411a, thereby using the engagement between the fork-shaped structure 411a and the transmission slot 321 to move the locking pin 3a along the positive X-axis, achieving the locking or unlocking operation of the lever 2.

[0115] In this embodiment, by setting the connecting pin 43, the transmission component 41 and the torsion spring 42a can be conveniently installed on the base 1, and a stable rotational support is provided for the transmission component 41. This makes it easier to complete the alignment and fixing of all related components in the elastic component 4 at one time during the assembly process, making the assembly benchmark more uniform and improving the assembly efficiency. In addition, by setting the elastic component 42 as a torsion spring 42a sleeved on the connecting pin 43, the radial space of the connecting pin 43 can be fully utilized, which is conducive to achieving a more compact overall spatial layout.

[0116] In one embodiment, refer to Figure 11 The elastic component 4 also includes a sleeve 45; a connecting pin 43 is inserted into the inner cavity of the sleeve 45, and the spring ring of the torsion spring 42a is sleeved on the outer periphery of the sleeve 45.

[0117] Specifically, sleeve 45 is a hollow cylindrical component, with its inner cavity for the connecting pin 43 to pass through and engage. The coil of torsion spring 42a is directly sleeved on the outer periphery of sleeve 45. By adding sleeve 45, on the one hand, the gap between the coil of torsion spring 42a and connecting pin 43 can be filled, improving the positional stability of torsion spring 42a on connecting pin 43; on the other hand, it can effectively reduce the direct friction between torsion spring 42a and connecting pin 43 during repeated torsion, thereby reducing the direct wear of torsion spring 42a and connecting pin 43 caused by this friction, and improving the smoothness and durability of the related components.

[0118] This application also provides a stop cylinder; please refer to [link / reference]. Figures 1 to 10 The stop cylinder includes a cylinder body 5 and a locking component in any of the above embodiments; The cylinder body 5 has a cylinder body portion 51 and a piston portion 52; the piston portion 52 is connected to the base 1 to drive the locking assembly to move closer to or away from the cylinder body portion 51.

[0119] In this embodiment, the moving parts 100, such as the pallet, typically perform material conveying and transfer operations above the stop cylinder. The cylinder body 5 can drive the locking assembly to move up and down along the Z-axis through the extension and retraction of the piston part 52; when the piston part 52 is fully extended and the locking assembly moves upward along the Z-axis to the high position, the lever 2 of the locking assembly will be located on the movement path of the moving part 100; when the piston part 52 is fully retracted and the locking assembly moves downward along the Z-axis to the low position, the lever 2 of the locking assembly will leave the movement path of the moving part 100.

[0120] Reference Figures 1 to 9 In the initial state, lever 2 is in the unlocked state under the action of the reset mechanism. At this time, the unlocked position 23 is opposite to the locking member 3. The locking member 3 will abut against the unlocked position 23 under the elastic force applied by the elastic component 4, so that lever 2 is stably held in the unlocked position 23. Figures 1 to 3 The unlocked state is shown; when the moving part 100 moves along the positive Y-axis and approaches the lever 2, the moving part 100 will contact the first side 2d of the lever 2 and apply a first directional force to the lever 2. This first directional force can push the lever 2 to rotate counterclockwise relative to the base 1, so that the unlocking position 23 gradually moves away from the locking member 3 in the circumferential direction as the lever 2 rotates positively; Figures 4 to 6As shown, when lever 2 rotates forward to the first locked state, locking member 3 is opposite to the first limiting groove 21. At this time, under the elastic force applied by elastic component 4, locking member 3 will further approach lever 2 and insert into the first limiting groove 21. Through the snap-fit ​​between locking member 3 and the first limiting groove 21, lever 2 can be prevented from continuing to rotate, thus achieving forward locking of the locking component. At this time, the first side 2d of lever 2 can be used to block the moving part 100 from continuing to move along the positive Y-axis. If it is necessary to release the moving part 100 later, such as... Figure 10 As shown, the piston portion 52 of the cylinder body 5 can be retracted to drive the entire locking assembly to move downward along the Z-axis, causing the lever 2 to leave the movement path of the moving part 100, thereby enabling the moving part 100 to be released, allowing it to pass over the lever 2 and continue moving in the positive direction along the Y-axis; if it is necessary to continue to block the moving part 100, the piston portion 52 of the cylinder body 5 can be extended to drive the entire locking assembly to move upward along the Z-axis, causing the lever 2 to return to the movement path of the moving part 100, and then the corresponding positive locking operation or reverse locking operation can be performed.

[0121] For the specific structure of the locking assembly, please refer to the description of the above embodiments. Since the stop cylinder in this embodiment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments. That is, by using a single lever 2 with double limit grooves to cooperate with a single locking component 3, locking functions in both positive and negative directions are realized. This eliminates the step of adjusting or changing the position of the locking device to adapt to different locking directions, simplifies the overall mechanical structure of the locking assembly, reduces operational complexity and maintenance costs, and facilitates rapid production changeover. Thus, it provides a reliable and efficient solution for applications in automated equipment requiring bidirectional positioning.

[0122] This application also provides a stop cylinder; please refer to [link / reference]. Figures 1 to 10 The elastic component 4 has an actuating arm 412; during the process of the piston portion 52 driving the locking component to approach the cylinder portion 51, the cylinder portion 51 is used to abut against the actuating arm 412 to drive the elastic component 4 to apply a reset force to the locking member 3.

[0123] Specifically, such as Figure 11As shown, the transmission component 41 can be configured as a sheet metal part. The middle part of the transmission component 41 constitutes its main body. This main body can be rotatably connected to the second side 1b of the base 1 by means of pivoting connectors such as rivets. The upper side of the main body constitutes the first end. The first end is bent upward to form a connecting part 411. The connecting part 411 can be connected to the actuating part 32 based on the snap-fit ​​engagement between the fork-shaped structure 411a and the transmission slot 321 in the above embodiment. The lower side of the main body constitutes the second end. The second end can be bent to the area between the base 1 and the cylinder part 51 to form the actuating arm 412.

[0124] Reference Figures 1 to 9 Under normal conditions, the piston part 52 of the cylinder body 5 is fully extended, so that the locking assembly is in a high position. At this time, the lever 2 is located on the moving path of the moving part 100. The transmission part 41 can generate a tendency to rotate in the clockwise direction under the elastic force of the elastic part 42. The rotation tendency of the transmission part 41 can drive the connecting part 411 to apply a force along the positive X-axis to the actuating part 32, thereby driving the locking pin 3a to move along the positive X-axis to realize the locking operation of the lever 2.

[0125] When lever 2 is in the position as follows Figures 4 to 6 In the first locked state shown, the locking part 31 of the locking pin 3a engages with the first limiting groove 21; if it is necessary to unlock the lever 2, such as Figure 10 As shown, the piston portion 52 of the cylinder body 5 can retract to drive the locking assembly to move downward along the Z-axis. During this process, the actuator arm 412 moves downward along the Z-axis simultaneously and gradually approaches the cylinder body portion 51 of the cylinder body 5. When the actuator arm 412 contacts the cylinder body portion 51, as the locking assembly continues to move downward, the cylinder body portion 51 will apply an external reset force upward along the Z-axis to the actuator arm 412. This external reset force can drive the actuator arm 412 to move upward, thereby causing the transmission member 41 to overcome the elastic force of the elastic member 42 and rotate counterclockwise. This, in turn, causes the connecting portion 411 to apply a force in the opposite direction along the X-axis to the actuating portion 32. For example, in the connecting portion 32... When part 411 is configured as a fork-shaped structure 411a and engages with the transmission slot 321, the fork-shaped structure 411a can be driven to abut against the slot wall of the transmission slot 321 and apply a force in the opposite direction along the X-axis to the actuating part 32. This drives the locking pin 3a to move in the opposite direction along the X-axis, causing the locking part 31 of the locking pin 3a to disengage from the first limiting slot 21, and the lever 2 to return to the unlocked state. At the same time, the lever 2 also leaves the movement path of the moving part 100 as the locking component moves down during the unlocking process. Thus, while completing the unlocking operation, the moving part 100 is moved aside, allowing the moving part 100 to continue to move in the positive direction along the Y-axis above the lever 2.

[0126] Similarly, when lever 2 is in such a state Figures 7 to 9In the second locked state shown, the locking part 31 of the locking pin 3a engages with the second limiting groove 22; if it is necessary to unlock the lever 2, such as Figure 10 As shown, the piston portion 52 of the cylinder body 5 can retract to drive the locking assembly to move downward along the Z-axis. During this process, the actuator arm 412 moves downward along the Z-axis simultaneously and gradually approaches the cylinder body portion 51 of the cylinder body 5. When the actuator arm 412 contacts the cylinder body portion 51, as the locking assembly continues to move downward, the cylinder body portion 51 will apply an external reset force upward along the Z-axis to the actuator arm 412. This external reset force can drive the actuator arm 412 to move upward, thereby driving the transmission member 41 to overcome the elasticity of the elastic member 42. The lever 2 rotates counterclockwise due to the force of the action, thereby driving the connecting part 411 to apply a force in the opposite direction along the X-axis to the actuating part 32. For example, when the connecting part 411 is configured as a fork-shaped structure 411a and is engaged with the transmission groove 321, the fork-shaped structure 411a can be driven to abut against the groove wall of the transmission groove 321 and apply a force in the opposite direction along the X-axis to the actuating part 32. This can drive the locking pin 3a to move in the opposite direction along the X-axis, causing the locking part 31 of the locking pin 3a to disengage from the second limiting groove 22, and the lever 2 to return to the unlocked state.

[0127] Based on the above configuration, the transmission component 41 essentially forms a lever 2 structure with the central main body as the fulcrum. This allows the unlocking operation to be performed without manually driving the locking pin 3a to move in the reverse direction. Instead, the piston part 52 of the cylinder body 5 can retract to apply force to the actuating arm 412. Thus, based on the lever 2 principle of the transmission component 41, automatic unlocking can be achieved by overcoming a large elastic force with a small external reset force. This solution naturally combines the unlocking action with the standard reciprocating motion of the cylinder body 5, eliminating the need for an additional independent drive source or complex control device, simplifying the system configuration and improving the coordination of actions. Furthermore, the lever 2 structure design of the transmission component 41 optimizes the spatial layout, allowing the actuating arm 412 to extend to the area below the base 1 and contact the cylinder part 51 before the base 1. This not only makes full use of space but also provides a convenient and direct contact point for applying the external reset force.

[0128] In one embodiment, refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, the stop cylinder also includes an adjusting member 6, which is movably connected to the cylinder body 51 in the direction of approaching or moving away from the actuating arm 412; During the process of the piston section 52 driving the locking assembly to approach the cylinder section 51, the adjusting member 6 is used to abut against the actuating arm body 412.

[0129] Specifically, the adjusting member 6 can be configured as an adjustable bolt that is locked to the top surface of the cylinder body 51. By adjusting the screwing depth of the bolt, the distance between its head and the actuator arm 412 on the Z-axis can be conveniently adjusted.

[0130] Based on the above configuration, during the retraction of the piston portion 52 of the cylinder body 5, the actuator arm 412 will first contact the adjusting member 6, thereby completing the unlocking operation based on the external reset force applied by the adjusting member 6 to the actuator arm 412. Since the initial distance between the adjusting member 6 and the actuator arm 412 is adjustable, the trigger point of the unlocking action can be precisely set and flexibly adjusted according to the actual application, thereby better adapting to different assembly requirements and working conditions.

[0131] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A locking component, characterized in that, The locking component includes: The base has two support walls that are arranged opposite each other; A lever is rotatably connected between the two support walls; one side of the lever has a first limiting groove and a second limiting groove spaced apart, and an unlocking position is formed between the first limiting groove and the second limiting groove; A locking member is movably mounted on one of the support walls, with one end of the locking member protruding from the support wall near the lever; the locking member is inserted into the first limiting groove or the second limiting groove in response to the rotation of the lever to prevent the lever from rotating; An elastic component is connected to the locking member and the base; the elastic component is used to provide a reset force to move the locking member away from the lever, so that the locking member disengages from the first limiting groove or the second limiting groove and abuts against the unlocking position, thereby releasing the lever from the locked state.

2. The locking assembly according to claim 1, characterized in that, The locking member has a locking portion at one end near the lever, and the locking portion is configured as a cone structure with a diameter that gradually decreases in the direction close to the lever. The edge of the first limiting groove is provided with a first chamfer, and / or the edge of the second limiting groove is provided with a second chamfer.

3. The locking assembly according to claim 2, characterized in that, The depth of the first limiting groove is less than or equal to the length of the locking part, and / or the depth of the second limiting groove is less than or equal to the length of the locking part.

4. The locking assembly according to claim 2, characterized in that, The length of the first limiting groove is greater than or equal to the maximum end face diameter of the locking part, and / or the length of the second limiting groove is greater than or equal to the maximum end face diameter of the locking part.

5. The locking assembly according to claim 2, characterized in that, The shortest distance between the first limiting groove and the second limiting groove is greater than or equal to the minimum end face diameter of the locking part.

6. The locking assembly according to claim 1, characterized in that, The support wall has a first side and a second side that are disposed opposite to each other, and the support wall has a guide hole. The lever is disposed opposite to the first side. The locking member includes a locking pin, which passes through the guide hole. One end of the locking pin near the lever constitutes a locking part, and the other end of the locking pin constitutes an actuating part. The elastic component is connected to the second side and the actuating part; the locking pin responds to the rotation of the lever so that the locking part selectively engages with the unlocking position, the first limiting groove or the second limiting groove.

7. The locking assembly according to claim 6, characterized in that, The elastic component includes a transmission element and an elastic element; the transmission element is rotatably connected to the base, and the transmission element has a connecting portion that is connected to the actuating portion; the elastic element is connected to the base and the transmission element. The elastic element is used to apply an elastic force to the transmission element to drive the transmission element to rotate in a first direction, thereby pushing the locking pin to move in a direction closer to the lever through the connecting part.

8. The locking assembly according to claim 7, characterized in that, The actuating part is provided with a transmission slot; the connecting part is configured as a fork-shaped structure, and the fork-shaped structure engages with the transmission slot.

9. The locking assembly according to claim 7, characterized in that, The transmission component has a first end and a second end that are disposed opposite to each other. The first end constitutes the connecting part, and the second end constitutes the actuating arm. The middle part of the transmission component is rotatably connected to the base. The actuating arm responds to an external reset force and drives the transmission component to overcome the elastic force and rotate in a second direction, so as to pull the locking pin to move away from the lever through the connecting part. The second direction is opposite to the first direction.

10. The locking assembly according to claim 9, characterized in that, The transmission component is formed by bending sheet metal structural parts, and the transmission component has a first bent arm, a second bent arm, and a bent lug. The first bending arm and the second bending arm have a preset bending angle. One end of the first bending arm is connected to one end of the second bending arm. The other end of the first bending arm constitutes the connecting part, and the other end of the second bending arm constitutes the actuating arm. The bending lug has a preset bending angle with the first bending arm. One end of the bending lug is connected to the middle of the first bending arm, and the other end of the bending lug is rotatably connected to the base.

11. The locking assembly according to claim 7, characterized in that, The second side is provided with a connecting seat; the transmission component has a bent ear; the elastic component is a torsion spring; The elastic component further includes a connecting pin, one end of which forms a limiting shoulder, and the other end of which is connected to the connecting seat; the bent ear and the spring coil of the torsion spring are rotatably sleeved on the connecting pin; the movable arm of the torsion spring abuts against the side of the connecting portion facing away from the second side to apply the elastic force to the connecting portion.

12. The locking assembly according to claim 11, characterized in that, The elastic component also includes a sleeve; the connecting pin passes through and fits into the inner cavity of the sleeve, and the spring coil of the torsion spring is sleeved on the outer periphery of the sleeve.

13. The locking assembly according to any one of claims 1 to 12, characterized in that, The lever has a triangular prism structure, and the lever has a first side edge, a second side edge, and a third side edge. The side between the first side edge and the second side edge forms a first side surface, the side between the second side edge and the third side edge forms a second side surface, and the side between the third side edge and the first side edge forms a third side surface. The first side edge is rotatably connected between the two support walls; the first limiting groove and the second limiting groove are arranged at intervals around the rotation axis of the first side edge on the edge of the first side edge.

14. A stop cylinder, characterized in that, The stop cylinder includes a cylinder body and a locking assembly as described in any one of claims 1 to 13; The cylinder body has a cylinder body and a piston body; the piston body is connected to the base to drive the locking assembly to move closer to or away from the cylinder body.

15. The stop cylinder according to claim 14, characterized in that, The elastic component has an actuating arm; during the process of the piston portion driving the locking component closer to the cylinder portion, the cylinder portion is used to abut against the actuating arm to drive the elastic component to apply the reset force to the locking member.

16. The stop cylinder according to claim 15, characterized in that, The stop cylinder also includes an adjusting member, which is movably connected to the cylinder body in a direction that is close to or away from the actuating arm. During the process of the piston driving the locking assembly closer to the cylinder, the adjusting member is used to abut against the actuating arm.

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