Pressurizing device piston locking device
By designing a locking structure for the slide bar and clamping block, the problem that the piston of a traditional pressurizer can only be locked at a specific position is solved, and the piston can be effectively locked in the middle position of its stroke, thus improving the practicality and ease of operation of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional pressurizer piston locking devices can only restrict the movement of the piston at specific positions, and cannot lock it at the middle position of the stroke, which reduces the practicality of the device.
A locking structure including a slide bar and a clamping block is designed. The sliding slide bar causes the clamping block to clamp the piston rod. Rubber pads are used to increase friction and magnetic electromagnetic blocks to improve the clamping effect. Springs are used to enhance clamping stability, thereby locking the piston in the middle position of its stroke.
It achieves effective locking of the piston in the middle position of its stroke, avoiding the limitation of moving only in a specific position, improving the practicality and ease of operation of the device, and preventing damage to the rigid contact of the piston rod.
Smart Images
Figure CN224107402U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical pressure charging technical field especially, relate to a kind of pressure charger piston locking device. BACKGROUND
[0002] Medical pressure charger piston locking device is an important component of piston type medical pressure charger, and its main purpose is to prevent piston from moving accidentally in specific conditions (such as equipment transportation, storage or non-working state), to ensure the safety, reliability of medical pressure charger and maintain the good state of internal components.
[0003] During the use of the current pressure charger piston locking device, the staff often find that: some traditional pressure chargers use simple mechanical blocking structure to prevent piston from moving, for example, rigid stopper is arranged at the limit position of piston stroke, however, this way has obvious limitations, it can only limit the movement of piston at specific position (usually the end point of stroke), and it cannot realize the locking of piston at the intermediate position of stroke, which leads to the reduction of device practicability. UTILITY MODEL CONTENTS
[0004] The technical problem to be solved by the utility model is that only the movement of piston at specific position (usually the end point of stroke) can be limited, and the locking of piston at the intermediate position of stroke cannot be realized, which leads to the reduction of device practicability.
[0005] The technical scheme adopted by the utility model to solve its technical problem is: a pressure charger piston locking device, comprising a shell, a piston cylinder is fixedly connected in the shell, a piston rod is slidably inserted on the shell and the piston cylinder, one end of the piston rod is fixedly connected with a push handle, one end of the piston rod is fixedly connected with a piston, a pressure charging pipe is fixedly connected on the piston cylinder, a digital pressure gauge is fixedly connected on the shell, a locking structure is arranged on the shell, the locking structure mainly comprises two slide rods, the two slide rods are slidably inserted on the two sides of the shell, the slide rods are slidably inserted on the piston cylinder, one end of the slide rod is fixedly connected with a clamping block, the clamping block is fixedly connected with a rubber pad.
[0006] The effects achieved by the above components are that the pressurizing pipe is connected with the external medical equipment, the staff member drives the piston to move by sliding the piston rod to pressurize the equipment, and the pressure reading can be observed through the digital pressure gauge; when the piston needs to be locked at a certain position, the two slide rods are slid to enable the two clamping blocks to clamp the piston rod, thereby locking the piston; the rubber pad can increase the friction to improve the clamping effect, and can prevent the rigid contact between the clamping blocks and the piston rod from damaging the piston rod; the piston can be stopped at different positions by clamping different parts of the piston rod, thereby avoiding the situation that the piston can only be limited to move at a specific position and the locking of the piston at the intermediate position in the stroke cannot be achieved, and the practicability of the device is improved.
[0007] Preferably, two embedding grooves are formed in the clamping blocks, a magnetic metal block is fixedly connected in the embedding groove of one clamping block, and an electromagnetic block is fixedly connected in the embedding groove of the other clamping block.
[0008] The effects achieved by the above components are that the electromagnetic block is powered on during clamping, and the electromagnetic block is attracted to the magnetic metal block under the action of magnetic force, so that the clamping effect is improved.
[0009] Preferably, a cavity is formed in the clamping block, and a plurality of second springs are fixedly connected in the cavity, one end of each second spring being fixedly connected to the rubber pad.
[0010] The effects achieved by the above components are that the plurality of second springs are in a contracted state when the clamping blocks clamp the piston rod, so that the elastic force of the second springs acts on the rubber pad, further improving the clamping effect.
[0011] Preferably, a first spring is sleeved on the slide rod, one end of the first spring being fixedly connected to the slide rod, and the other end of the first spring being fixedly connected to the housing.
[0012] The effects achieved by the above components are that the two first springs are in a contracted state during clamping, so that the electromagnetic block is powered off when the piston rod starts to work, and the two clamping blocks slide to the two sides under the action of the elastic force of the first springs to release the locking state, so that the operation is more convenient.
[0013] Preferably, a limiting structure is arranged on the housing, the limiting structure mainly comprises a fixed plate, the fixed plate being fixedly connected to the housing, two slide rods being slidably inserted into the fixed plate, a clamping block being fixedly connected to each slide rod, and two clamping grooves being formed in the push handle.
[0014] The effects achieved by the above components are that when the piston rod is completely slid into the housing, the two slide rods can be slid to enable the clamping blocks to be clamped into the corresponding clamping grooves to limit the piston rod during transportation and storage.
[0015] Preferably, the two sliding rods are fixedly connected with a connecting rod.
[0016] The effect achieved by the above components is that the two sliding rods can be synchronously slid by the connecting rod.
[0017] Preferably, the connecting rod is provided with a threaded groove, the fixed plate is fixedly connected with a fixed block, and the fixed block is threadedly inserted with a bolt.
[0018] The effect achieved by the above components is that the bolt is threadedly connected with the threaded groove when limiting, and the connecting rod can be further limited.
[0019] Preferably, the connecting rod is fixedly connected with a third spring, and one end of the third spring is fixedly connected with the fixed plate.
[0020] The effect achieved by the above components is that when the clamping block is clamped into the clamping groove, the third spring is in a contracted state, so that when the connection between the bolt and the threaded groove is released, the connecting rod drives the sliding rod to slide downward under the elastic force of the third spring, preventing the clamping block from affecting the piston rod when limiting is not needed.
[0021] Compared with the prior art, the utility model has the advantages and positive effects that:
[0022] In the utility model, when the piston moves to a certain position and needs to be locked, the two sliding rods can be slid to make the two clamping blocks clamp the piston rod, thereby locking the piston. The rubber pad can increase the friction to improve the clamping effect, and can prevent the rigid contact between the clamping block and the piston rod from damaging the piston rod. The piston can be stopped at different positions by clamping different parts of the piston rod, thereby avoiding the problem that the piston can only be limited to move at a specific position, and the locking of the piston at an intermediate position in the stroke cannot be realized, which reduces the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS
[0023] The utility model will be further described in connection with the drawings and examples.
[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0025] Figure 2 It is a part schematic view of the locking structure of the utility model;
[0026] Figure 3 It is a part schematic view of the limiting structure of the utility model;
[0027] Figure 4 It is the utility model Figure 2A magnified three-dimensional structural diagram of point A.
[0028] Legend: 1. Housing; 2. Piston cylinder; 3. Piston rod; 4. Pressurization pipe; 5. Digital pressure gauge; 6. Locking structure; 61. Slide rod; 62. Clamping block; 63. Rubber pad; 64. Embedded groove; 65. Magnetic metal block; 66. Electromagnetic block; 67. First spring; 68. Cavity; 69. Second spring; 7. Limiting structure; 71. Fixing plate; 72. Slide rod; 73. Locking block; 74. Locking groove; 75. Connecting rod; 76. Third spring; 77. Fixing block; 78. Bolt; 79. Threaded groove; 8. Push handle. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Example 1, such as Figure 1 As shown, a pressurizer piston locking device includes a housing 1, a piston cylinder 2 fixedly connected in the housing 1, a piston rod 3 slidably inserted on the housing 1 and the piston cylinder 2, a push handle 8 fixedly connected to one end of the piston rod 3, a piston fixedly connected to one end of the piston rod 3, a pressurizing pipe 4 fixedly connected to the piston cylinder 2, and a digital pressure gauge 5 fixedly connected to the housing 1.
[0032] Reference Figure 2 and Figure 4As shown, the shell 1 is provided with a locking structure 6, which is mainly composed of two slide rods 61, which are respectively slidably inserted on both sides of the shell 1 and the piston cylinder 2. One end of the slide rod 61 is fixedly connected with a clamping block 62, and the clamping block 62 is fixedly connected with a rubber pad 63. The charging pipe 4 is connected with the external medical equipment. The staff drives the piston to move by sliding the piston rod 3 to charge the equipment, and can observe the pressure indication through the digital pressure gauge 5. When the piston moves to a certain position and needs to be locked, the two slide rods 61 are slid to clamp the piston rod 3 with the two clamping blocks 62, so as to lock the piston. The rubber pad 63 can increase the friction to improve the clamping effect, and can prevent the rigid contact between the clamping block 62 and the piston rod 3 from damaging the piston rod 3. The piston can be stopped at different positions by clamping different parts of the piston rod 3, thereby avoiding the situation that the piston can only be limited to move at a specific position, and the locking of the piston at the intermediate position of the stroke cannot be realized, thereby reducing the practicability of the device. The clamping block 62 is provided with two embedding grooves 64. The embedding groove 64 on one clamping block 62 is fixedly connected with a magnetic metal block 65, and the embedding groove 64 on the other clamping block 62 is fixedly connected with an electromagnetic block 66. When clamping, the electromagnetic block 66 is energized, and the electromagnetic block 66 is attracted together with the magnetic metal block 65 under the action of magnetic force, so as to improve the clamping effect. The clamping block 62 is provided with a cavity 68, and a plurality of second springs 69 are fixedly connected in the cavity 68. One end of the second spring 69 is fixedly connected to the rubber pad 63. When the clamping block 62 clamps the piston rod 3, the second spring 69 is in a contracted state, so that the rebounding force of the second spring 69 acts on the rubber pad 63, further improving the clamping effect. The slide rod 61 is sleeved with a first spring 67. One end of the first spring 67 is fixedly connected to the slide rod 61, and the other end of the first spring 67 is fixedly connected to the shell 1. When clamping, the two first springs 67 are in a contracted state. Therefore, when the piston rod 3 starts to work, the electromagnetic block 66 is de-energized, and the two clamping blocks 62 slide to the sides under the action of the rebounding force of the first spring 67 to release the locking state, so that the operation is more convenient.
[0033] Referring to Figure 1 and Figure 3As shown, the housing 1 is provided with a limiting structure 7, which is mainly composed of a fixed plate 71 fixedly connected to the housing 1, two sliding rods 72 slidingly inserted into the fixed plate 71, clamping blocks 73 fixedly connected to the sliding rods 72, and two clamping grooves 74 formed in the push handle 8. When the piston rod 3 is completely inserted into the housing 1, the two sliding rods 72 are slid to allow the clamping blocks 73 to be clamped into the corresponding clamping grooves 74, thereby limiting the piston rod 3 during transportation and storage. The two sliding rods 72 are fixedly connected to a connecting rod 75, which is used to synchronously slide the two sliding rods 72. The connecting rod 75 is provided with a threaded groove 79, and the fixed plate 71 is fixedly connected to a fixed block 77 provided with a bolt 78. When limiting, the bolt 78 is rotated to be screwed into the threaded groove 79, thereby further limiting the connecting rod 75. The connecting rod 75 is fixedly connected to a third spring 76, one end of which is fixedly connected to the fixed plate 71. When the clamping blocks 73 are clamped into the clamping grooves 74, the third spring 76 is in a contracted state, so that when the connection between the bolt 78 and the threaded groove 79 is released, the connecting rod 75 drives the sliding rods 72 to slide downward under the elastic force of the third spring 76, thereby preventing the clamping blocks 73 from affecting the piston rod 3 when not limiting.
[0034] The working principle is that the pressurizing pipe 4 is connected with an external medical device, an operator drives the piston to move through the piston rod 3, the device is pressurized, and the pressure display of the digital pressure gauge 5 can be observed; when the piston needs to be locked at a certain position, the two slide rods 61 are slid, so that the two clamping blocks 62 clamp the piston rod 3, and the piston is locked; the rubber pad 63 can increase the friction to improve the clamping effect, and the rubber pad 63 can prevent the rigid contact between the clamping block 62 and the piston rod 3 from damaging the piston rod 3; the piston can be stopped at different positions by clamping different parts of the piston rod 3, so that the movement of the piston at a specific position is limited, and the locking of the piston at the intermediate position in the stroke cannot be realized, which reduces the practicability of the device; when clamping, the electromagnetic block 66 is powered on, the electromagnetic block 66 is attracted to the magnetic metal block 65 under the action of the magnetic force, and the clamping effect is improved; when the clamping block 62 clamps the piston rod 3, the second springs 69 are in a contracted state, so that the elastic force of the second springs 69 acts on the rubber pad 63, and the clamping effect is further improved; when clamping, the two first springs 67 are in a contracted state, so that when the piston rod 3 starts to work, the electromagnetic block 66 is powered off, and the two clamping blocks 62 slide to the sides under the action of the elastic force of the first springs 67 to release the locking state, so that the operation is more convenient; when the piston rod 3 is completely slid into the shell 1, the clamping block 73 can be clamped into the corresponding clamping groove 74 by sliding the two slide rods 72 during the transportation and storage process, and the clamping block 73 can be positioned by connecting the two slide rods 72 to slide synchronously through the connecting rod 75; when positioning, the screw 78 is rotated to be screwed with the threaded groove 79, and the connecting rod 75 can be further positioned; when the clamping block 73 is clamped into the clamping groove 74, the third spring 76 is in a contracted state, so that when the connection between the screw 78 and the threaded groove 79 is released, the connecting rod 75 slides downward under the action of the elastic force of the third spring 76, so that the clamping block 73 does not affect the piston rod 3 when positioning is not needed.
[0035] Based on the above ideal embodiments of the present application, the related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.
Claims
1. A pressure-charger piston-locking device comprising a housing (1), characterised in that: The shell (1) is fixedly connected with a piston cylinder (2), the shell (1) and the piston cylinder (2) are slidably inserted with a piston rod (3), one end of the piston rod (3) is fixedly connected with a push handle (8), one end of the piston rod (3) is fixedly connected with a piston, the piston cylinder (2) is fixedly connected with a charging pipe (4), the shell (1) is fixedly connected with a digital pressure gauge (5), the shell (1) is provided with a locking structure (6), the locking structure (6) is mainly composed of two slide rods (61), the two slide rods (61) are slidably inserted on the two sides of the shell (1), the slide rod (61) is slidably inserted on the piston cylinder (2), one end of the slide rod (61) is fixedly connected with a clamping block (62), the clamping block (62) is fixedly connected with a rubber pad (63).
2. A pressure-charger piston-locking device according to claim 1, characterized in that: Two embedding grooves (64) are formed in the clamping block (62), a magnetic metal block (65) is fixedly connected in the embedding groove (64) on one clamping block (62), and an electromagnetic block (66) is fixedly connected in the embedding groove (64) on the other clamping block (62).
3. A pressure-charger piston-locking device according to claim 2, characterized in that: A cavity (68) is formed in the clamping block (62), a plurality of second springs (69) are fixedly connected in the cavity (68), and one end of the second spring (69) is fixedly connected to the rubber pad (63).
4. A pressure-charger piston-locking device according to claim 3, characterized in that: A first spring (67) is sleeved on the slide rod (61), one end of the first spring (67) is fixedly connected to the slide rod (61), and the other end of the first spring (67) is fixedly connected to the shell (1).
5. A pressure-charger piston-locking device according to claim 4, characterised in that: A limiting structure (7) is arranged on the shell (1), the limiting structure (7) is mainly composed of a fixed plate (71), the fixed plate (71) is fixedly connected to the shell (1), two sliding rods (72) are slidably inserted on the fixed plate (71), a clamping block (73) is fixedly connected to the sliding rod (72), and two clamping grooves (74) are formed in the push handle (8).
6. A pressure-charger piston-locking device according to claim 5, characterized in that: Two sliding rods (72) are fixedly connected with a connecting rod (75).
7. A pressure-charger piston-locking device according to claim 6, characterized in that: A threaded groove (79) is formed in the connecting rod (75), a fixed block (77) is fixedly connected to the fixed plate (71), and a bolt (78) is threadedly inserted in the fixed block (77).
8. A pressure-charger piston-locking device according to claim 7, characterized in that: A third spring (76) is fixedly connected to the connecting rod (75), and one end of the third spring (76) is fixedly connected to the fixed plate (71).