Air cylinder with locking structure

Abstract

The utility model relates to the technical field of air cylinders, and discloses an air cylinder with a locking structure, which comprises an air cylinder body, a locking component is arranged on the front side surface of the air cylinder body, a connecting plate is arranged on the back surface of the locking component, and a locking key is fixedly mounted on the back surface of the connecting plate. An anti-blocking assembly is arranged in the locking key. According to the air cylinder with the locking structure, through cooperation of an inclined groove, a groove, an anti-blocking elastic piece, a moving block and an L-shaped exhaust hole, dust and impurities accumulated at the bottom end of the interior of a key groove can be blown and cleaned before the locking key enters the key groove, and the situation that the dust and impurities are accumulated in the key groove, consequently, entering of the locking key is hindered, and the locking effect is affected is avoided; and meanwhile, through cooperation of a thick hole, a thin hole, a circular plate, an exhaust elastic piece and a sealing plate, when the locking key needs to be separated from the interior of the key groove for unlocking, resistance borne by the locking key when the locking key is separated from the interior of the key groove is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a cylinder with a locking structure. Background Art

[0002] A cylinder refers to a cylindrical metal part that guides a piston to perform linear reciprocating motion in the cylinder. Existing cylinders are connected to operating hand valves, which can be directly operated to realize the ejection and retraction of the cylinder. If the operation is improper, the cylinder will retract, which may cause harm to the staff. Therefore, a locking structure needs to be set on the cylinder to avoid the above situation.

[0003] According to a publicly disclosed cylinder with a safety locking structure (publication number: CN217002471U), in the above application, a locking mechanism is added without changing the cylinder body. The locking block is manually moved by turning the knurled bolt, and the locking key is connected or separated from the keyway on the synchronous locking rod, thereby controlling the locking of the cylinder body. It is simple and convenient, and at the same time highly safe.

[0004] However, during the actual use of the above-mentioned equipment, due to the complexity of the working environment, dust and impurities in the air will enter the keyway and accumulate on the bottom surface of the keyway. As a result, when the locking key needs to enter the keyway for locking operation, the accumulated dust and impurities will hinder the locking key from fully entering the keyway, resulting in the locking key being unable to achieve full locking performance, thereby affecting the locking effect. In view of this, we propose a cylinder with a locking structure. Utility Model Content

[0005] The purpose of the utility model is to provide a cylinder with a locking structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylinder with a locking structure, comprising a cylinder body, a synchronous locking rod is arranged inside the cylinder body, a key groove is arranged on the front side surface of the synchronous locking rod, a locking assembly is arranged on the front side surface of the cylinder body, a connecting plate is arranged on the back side of the locking assembly, a locking key is fixedly installed on the back side of the connecting plate, an anti-blocking assembly is arranged inside the locking key, and the anti-blocking assembly comprises:

[0007] An inclined groove, the inclined groove being provided on the inner bottom surface of the keyway;

[0008] A groove, wherein the groove is provided on the back of the locking key, an anti-blocking elastic member is fixedly installed on the front inner wall surface of the groove, a moving block is fixedly installed on the back of the anti-blocking elastic member, and the moving block will squeeze the anti-blocking elastic member when moving backward, and an L-shaped exhaust hole is provided on the inner top surface of the groove, and the air inside the groove can be discharged through the L-shaped exhaust hole;

[0009] A coarse hole is provided on the front inner wall surface of the groove, and fine holes are provided on the front inner wall surface of the coarse hole. The interior of the groove is connected with the outside air through the coarse hole and the fine holes. A circular plate is fixedly installed inside the coarse hole, and an air vent is provided on the front surface of the circular plate. An exhaust elastic member is fixedly installed on the front surface of the circular plate, and a sealing plate is fixedly installed on the front end of the exhaust elastic member. When the sealing plate moves to the rear side, the exhaust elastic member is squeezed.

[0010] Preferably, the interior of the groove is connected to the outside air through an L-shaped exhaust hole, and the outer wall of the moving block fits with the inner wall of the groove. The groove limits the movement of the moving block so that the moving block can only perform linear motion in the forward and backward directions.

[0011] Preferably, one end of the fine hole away from the coarse hole passes through the inner wall of the locking key and the connecting plate and is connected to the outside air.

[0012] Preferably, the size of the sealing plate matches the size of the pore, and the sealing plate is located inside the pore. When the sealing plate enters the pore, it seals the pore.

[0013] Preferably, a limiting ring is fixedly installed inside the fine hole, and a rubber ring is fixedly installed on the back side of the limiting ring.

[0014] Preferably, the back surface of the rubber ring is in contact with the front surface of the sealing plate.

[0015] Compared with the prior art, the utility model provides a cylinder with a locking structure, which has the following beneficial effects:

[0016] 1. The cylinder with a locking structure can blow and clean the dust and impurities accumulated at the bottom of the keyway before the locking key enters the keyway through the cooperation of the arranged inclined groove, groove, anti-blocking elastic member, moving block and L-shaped exhaust hole, so as to avoid the accumulation of dust and impurities in the keyway and hinder the entry of the locking key and affect the locking effect. At the same time, through the cooperation of the arranged coarse hole, fine hole, circular plate, exhaust elastic member and sealing plate, when the locking key needs to be separated from the keyway to release the lock, the outside air can enter the gap between the keyway and the locking key, thereby reducing the resistance encountered by the locking key when it is separated from the keyway, and extending the service life of the locking assembly. In addition, the arranged air vent can reduce the obstruction of the arranged circular plate to the flow of air in the coarse hole.

[0017] 2. The cylinder with a locking structure can limit the sealing plate by means of a limit ring, so as to avoid pushing the sealing plate when the moving block enters the groove to squeeze the air, resulting in partial air loss and affecting the exhaust cleaning effect. At the same time, the rubber ring can reduce the impact force of the sealing plate on the limit ring when the sealing plate moves and resets, thereby extending the service life of the anti-blocking component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the cylinder body of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the synchronous locking rod, connecting plate and locking key of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure inside the connecting plate and the locking key of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the utility model at A;

[0023] Figure 6 It is a schematic diagram of the structure of B of the utility model.

[0024] In the figure: 1. cylinder body; 2. synchronous locking rod; 3. keyway; 4. locking assembly; 5. connecting plate; 6. locking key; 701. inclined groove; 702. groove; 703. anti-blocking elastic member; 704. moving block; 705. L-shaped exhaust hole; 706. coarse hole; 707. fine hole; 708. round plate; 709. air vent; 710. exhaust elastic member; 711. sealing plate; 801. limit ring; 802. rubber ring. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6As shown, the utility model provides a technical solution: a cylinder with a locking structure, including a cylinder body 1, a synchronous locking rod 2 is arranged inside the cylinder body 1, a key slot 3 is opened on the front side surface of the synchronous locking rod 2, a locking assembly 4 is arranged on the front side surface of the cylinder body 1, a connecting plate 5 is arranged on the back side of the locking assembly 4, a locking key 6 is fixedly installed on the back side of the connecting plate 5, the connecting plate 5 can drive the locking key 6 to perform a straight line movement forward and backward, the locking key 6 runs through the front side surface of the cylinder body 1 and is plugged into the key slot 3, the locking assembly 4 includes: a guide rod, a bearing, a bolt and a locking block, etc., the screw The bolt passes through the bearing, the locking block and is threaded with the guide block in sequence. The bearing can ensure that the knurled bolt is smoothly tightened. The bolt is manually turned to push the locking block backward along the guide rod until the locking key 6 enters the key slot 3. At this time, the synchronous locking rod 2 is limited, and then the piston rod of the cylinder body 1 is fixed. The above-mentioned locking assembly 4 is similar to the locking member principle mentioned in the Chinese patent with announcement number CN217002471U (a cylinder with a safety locking structure), and the effect is the same. It is an existing technical means in this field and will not be described in detail here. An anti-blocking assembly is arranged inside the locking key 6.

[0026] The anti-blocking component includes: an inclined groove 701, a groove 702 and a coarse hole 706. The inclined groove 701 is opened on the inner bottom surface of the key groove 3. Dust and impurities entering the key groove 3 will fall downward onto the inclined groove 701 due to gravity and slide outward along the inclined surface of the inclined groove 701.

[0027] The groove 702 is provided on the back side of the locking key 6, and an anti-blocking elastic member 703 is fixedly installed on the front inner wall surface of the groove 702, and a moving block 704 is fixedly installed on the back side of the anti-blocking elastic member 703. When the moving block 704 is squeezed and moves forward, it will squeeze the anti-blocking elastic member 703, so that the anti-blocking elastic member 703 is compressed to generate elastic potential energy, and the outer wall of the moving block 704 fits with the inner wall of the groove 702. The interior of the groove 702 can limit the movement of the moving block 704, so that the moving block 704 can only perform a linear motion in the front and rear directions. An L-shaped exhaust hole 705 is provided on the inner top surface of the groove 702, and the interior of the groove 702 is connected with the outside air through the L-shaped exhaust hole 705. When the moving block 704 moves toward the inside of the groove 702, the air inside the groove 702 will be compressed, so that the air is ejected into the key slot 3 through the L-shaped exhaust hole 705.

[0028] When the locking key 6 enters the key slot 3 for the locking operation, the moving block 704 will first contact the inner wall of the key slot 3 and be squeezed by the inner wall of the key slot 3 to enter the interior of the groove 702. At this time, the air inside the groove 702 is squeezed and sprayed into the interior of the key slot 3 through the L-shaped exhaust hole 705, and the dust and impurities accumulated on the surface of the inclined groove 701 are sprayed out to avoid accumulation on the upper surface of the inclined groove 701, which would hinder the locking key 6 from entering the key slot 3 to achieve the locking operation.

[0029] The coarse hole 706 is provided on the front inner wall surface of the groove 702, and a fine hole 707 is provided on the front inner wall surface of the coarse hole 706. The end of the fine hole 707 away from the coarse hole 706 penetrates the inner wall of the locking key 6 and the connecting plate 5 and is connected with the outside air. A circular plate 708 is fixedly installed inside the coarse hole 706, and an air vent 709 is provided on the front surface of the circular plate 708. The outside air can enter the groove 702 through the fine hole 707, the air vent 709 and the coarse hole 706. An exhaust elastic member 710 is fixedly installed on the front surface of the circular plate 708, and a sealing plate 711 is fixedly installed at the front end of the exhaust elastic member 710. The size of the sealing plate 711 is consistent with that of the fine hole 707. The sizes are adapted to each other, and the sealing plate 711 is located inside the fine hole 707. In the initial state, the sealing plate 711 seals the inside of the fine hole 707 to prevent the squeezed air inside the groove 702 from being discharged from the coarse hole 706 and the fine hole 707 to the outside, affecting the blowing and cleaning effect of the gas on the inside of the key groove 3. When the sealing plate 711 is subjected to a pulling force from the rear, it will be pulled into the coarse hole 706, thereby squeezing the exhaust elastic member 710, so that the exhaust elastic member 710 is compressed to generate elastic potential energy. After the pulling force disappears, the sealing plate 711 will move and reset under the action of the elastic potential energy of the exhaust elastic member 710, enter the fine hole 707 and re-seal.

[0030] When the locking key 6 completely enters the key slot 3, the back side of the locking key 6 fits tightly against the rear inner wall of the key slot 3 to exhaust the air in the gap. At this time, the atmospheric pressure between the locking key 6 and the inner wall of the key slot 3 increases. When the locking key 6 needs to leave the key slot 3, the atmospheric pressure between the locking key 6 and the inner wall of the key slot 3 will pull the sealing plate 711 to move backward, so that the fine hole 707 opens, and the outside air enters the gap between the key slot 3 and the locking key 6 through the fine hole 707, the coarse hole 706 and the L-shaped exhaust hole 705, thereby reducing the resistance encountered by the locking key 6 when moving out of the key slot 3 and extending the service life of the locking assembly 4.

[0031] A limit ring 801 is fixedly installed inside the fine hole 707, and a rubber ring 802 is fixedly installed on the back of the limit ring 801. The back of the rubber ring 802 fits with the front surface of the sealing plate 711. The set limit ring 801 can limit the sealing plate 711 to prevent the sealing plate 711 from moving toward the fine hole 707 and consuming part of the compressed air when the moving block 704 moves the compressed air toward the groove 702, thereby affecting the jet cleaning effect. At the same time, the set rubber ring 802 can buffer the impact force of the sealing plate 711 when the sealing plate 711 is reset by the elastic potential energy of the exhaust elastic member 710 and hits the limit ring 801, thereby preventing the sealing plate 711 from directly hitting the limit ring 801, causing damage to both, and affecting the service life of the anti-blocking component.

[0032] In the present invention, when in use, when dust and impurities enter the key slot 3, they will fall downward onto the inclined slot 701 due to the influence of gravity, some of the dust and impurities will slide outward along the inclined surface of the inclined slot 701, and some of the dust and impurities will remain on the inclined slot 701. When the locking key 6 moves backward into the key slot 3 to perform the locking operation under the action of the locking assembly 4, the moving block 704 will contact the inner wall of the key slot 3 first, and enter the interior of the groove 702 under the compression of the key slot 3. At this time, the air inside the groove 702 will be squeezed and compressed by the moving block 704 and will be ejected to the key through the L-shaped exhaust hole 705. Inside the groove 3, the dust and impurities remaining on the inclined groove 701 are blown away and cleaned to prevent the dust and impurities from accumulating inside the key groove 3 and hindering the entry of the locking key 6, affecting the locking effect. When the locking key 6 needs to be released from the key groove 3, the sealing plate 711 will enter the coarse hole 706 under the pull of the atmospheric pressure between the key groove 3 and the locking key 6, and release the seal of the fine hole 707. At this time, the outside air enters the gap between the key groove 3 and the locking key 6 through the fine hole 707, the coarse hole 706 and the L-shaped exhaust hole 705, which can reduce the resistance encountered by the locking key 6 when moving out of the key groove 3.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A cylinder with a locking structure, comprising a cylinder body (1), a synchronous locking rod (2) is arranged inside the cylinder body (1), a key groove (3) is provided on the front side surface of the synchronous locking rod (2), a locking assembly (4) is arranged on the front side surface of the cylinder body (1), a connecting plate (5) is arranged on the back side of the locking assembly (4), and a locking key (6) is fixedly installed on the back side of the connecting plate (5), characterized in that: An anti-blocking component is arranged inside the locking key (6), and the anti-blocking component comprises: An inclined groove (701), wherein the inclined groove (701) is provided on the inner bottom surface of the key groove (3); A groove (702), the groove (702) being provided on the back side of the locking key (6), an anti-blocking elastic member (703) being fixedly mounted on the front inner wall surface of the groove (702), a moving block (704) being fixedly mounted on the back side of the anti-blocking elastic member (703), and an L-shaped exhaust hole (705) being provided on the inner top surface of the groove (702); A coarse hole (706), wherein the coarse hole (706) is provided on the front inner wall surface of the groove (702), and a fine hole (707) is provided on the front inner wall surface of the coarse hole (706). A circular plate (708) is fixedly installed inside the coarse hole (706), and a vent hole (709) is provided on the front surface of the circular plate (708). An exhaust elastic member (710) is fixedly installed on the front surface of the circular plate (708), and a sealing plate (711) is fixedly installed at the front end of the exhaust elastic member (710).

2. The cylinder with a locking structure according to claim 1, characterized in that: The interior of the groove (702) is connected to the outside air via the L-shaped exhaust hole (705), and the outer wall of the moving block (704) is in contact with the inner wall of the groove (702).

3. The cylinder with a locking structure according to claim 1, characterized in that: One end of the fine hole (707) away from the coarse hole (706) penetrates the inner wall of the locking key (6) and the connecting plate (5) and is in communication with the outside air.

4. The cylinder with a locking structure according to claim 1, characterized in that: The size of the sealing plate (711) matches the size of the pore (707), and the sealing plate (711) is located inside the pore (707).

5. The cylinder with a locking structure according to claim 1, characterized in that: A limit ring (801) is fixedly installed inside the fine hole (707), and a rubber ring (802) is fixedly installed on the back side of the limit ring (801).

6. The cylinder with a locking structure according to claim 5, characterized in that: The back surface of the rubber ring (802) is in contact with the front surface of the sealing plate (711).

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