Locking mechanism

Abstract

The utility model discloses a locking mechanism, which belongs to the technical field of mechanical locking, can be used for devices such as medical equipment, industrial instruments and the like, and aims to solve the problems of inconvenience in operation, instability in locking and easiness in damage of a trundle in the brake type locking of the traditional trundle, and the locking mechanism consists of an electric push rod, a connecting rod and the like. Universal trundles are installed at the bottom of the supporting frame, supporting assemblies are arranged on the universal trundles, and an electric push rod stretches out and draws back to drive a main connecting rod and a small connecting rod to achieve lifting of a supporting rod and switching of moving and locking states. The mechanism is convenient to operate, and locking can be completed through one key; during locking, the trundles leave the ground and are supported by the rubber bottom plate, so that the stability is high; the trundles can be protected, and the service life of the trundles is prolonged. In addition, the structure is compact, and the overall appearance of equipment is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical locking technical field especially relates to a locking mechanism. BACKGROUND

[0002] In the use process of medical equipment, industrial equipment and various mobile devices, the locking mechanism is an important part to ensure the stability of the equipment during work. For example, in the medical field, such as surgical trolley, diagnostic instrument and other equipment, when in use, the position needs to be fixed to avoid affecting the accuracy of diagnosis or treatment due to displacement. However, at present, most products on the market use brake casters for pushing and locking. When the equipment reaches the specified working area, the staff needs to step on the brake pedal to complete the locking operation. This traditional locking method has obvious defects in different scenarios:

[0003] Convenient operation: the brake pedal of the universal caster wheel cannot be determined when the equipment stops, and the staff often needs to rotate the caster wheel to adjust the position of the brake pedal before locking. This process not only wastes time, but also may delay the treatment opportunity in the medical field, and also increases the labor intensity of the staff.

[0004] Locking instability: after braking, the bearing form of the upper part of the caster wheel limits the stability of the locking. During the use of the equipment, it is easy to shake. In the medical field, this may cause deviation of the detection data; in industrial production, it may affect the machining precision, reduce the work efficiency, and even cause safety hazards to the equipment and operators.

[0005] Caster damage: frequent use of casters for locking will accelerate the wear of casters and shorten the service life of casters. Whether it is the high maintenance cost of medical equipment or the loss caused by maintenance of industrial equipment, it will bring great economic burden to the user. INVENTION CONTENTS

[0006] To solve the technical problems in the background art, the utility model provides a locking mechanism to solve the problems of inconvenient operation, unstable locking and easy damage of casters in the existing locking method, so that stable locking can be completed through simple key operation after the equipment reaches the specified working area, which is suitable for medical, industrial and other fields.

[0007] The utility model provides a locking mechanism, which comprises a support frame provided with four groups of universal wheels on the bottom, a plurality of groups of support assemblies are arranged on the support frame, the support assembly comprises a push rod support, a main connecting rod, two groups of support rods, two groups of small connecting rods, two groups of linear bearings and two groups of hinge pins;

[0008] The push rod support is used to fix the electric push rod, and its tail end is hinged to the support frame; two sets of linear bearings and hinge pins are respectively installed at both ends of the support frame, wherein the two sets of hinge pins are located above the two ends of the main connecting rod, and the two sets of linear bearings are located below the two ends of the main connecting rod.

[0009] The two sets of support rods can slide longitudinally within their respective linear bearings, and each set of linear bearings has a base plate fixedly installed at its bottom; the top of the electric actuator is hinged to the middle of the main connecting rod; there are two sets of small connecting rods, namely the first connecting rod and the second connecting rod, the two ends of the first connecting rod are respectively hinged to the hinge pin and one end of the main connecting rod, and the two ends of the second connecting rod are respectively hinged to one end of the main connecting rod and the top of the support rod.

[0010] Preferably, through the extension and retraction of the electric actuator, the main connecting rod and the small connecting rod can synchronously drive the two sets of support rods to rise and fall, thereby realizing the switching of the locking mechanism between the moving state and the locked state:

[0011] When the electric actuator retracts, the locking mechanism is in the moving state. At this time, the support rod drives the base plate to rise, the casters contact the ground, and the base plate leaves the ground. When the electric actuator extends, the locking mechanism is in the locked state. At this time, the support rod drives the base plate to descend, the base plate contacts the ground, and the casters leave the ground.

[0012] Preferably, the bottom of the base plate is provided with an anti-slip rubber pad.

[0013] Preferably, the number of support components is two sets, with their four base plates located at the four corners of the support frame.

[0014] Preferably, the electric actuator is connected to an external control system, which can control the extension and retraction of the electric actuator.

[0015] Preferably, the main connecting rod, support rod, and small connecting rod are all made of high-strength alloy steel.

[0016] The locking mechanism proposed in this utility model has the following beneficial effects:

[0017] Easy to operate: Operators only need to press the lock button to lock the equipment, without having to adjust the position of the caster brake pedal as in the traditional way. This greatly improves operating efficiency and reduces the labor intensity of staff, making it especially suitable for medical scenarios where timely operation is required.

[0018] Stable locking: In the locked state, all casters are off the ground and supported by the wear-resistant rubber base plate of the locking mechanism, which effectively increases the friction between the equipment and the ground, making the locking more secure and preventing the equipment from shaking during use. This ensures the stable operation of the equipment and guarantees the accuracy of medical testing data and the precision of industrial processing.

[0019] Extending caster life: This invention avoids using casters for locking, reduces caster wear, effectively protects casters, extends their service life, and lowers equipment maintenance costs. It has significant economic benefits for both expensive medical equipment and large-scale industrial equipment.

[0020] Compact structure: The overall structure of this mechanism is relatively compact and can be well hidden in the bottom support frame. It provides a good locking effect without affecting the overall appearance of the equipment and can be adapted to the appearance design requirements of various equipment.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0023] Fig. 2 This is a schematic diagram of the first partial structure of the present invention;

[0024] Fig. 3 This is a schematic diagram of the second partial structure of the present invention;

[0025] The following are the labels in the diagram: 1. Electric actuator; 2. Actuator support; 3. Support frame; 4. Main connecting rod; 5. Small connecting rod; 51. First connecting rod; 52. Second connecting rod; 6. Linear bearing; 7. Hinge pin; 8. Support rod; 9. Base plate. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] like Figs. 1-3 The locking mechanism shown is mainly composed of components such as an electric push rod 1, a push rod support 2, casters and a mechanism support frame 3, a main connecting rod 4, a small connecting rod 5, a linear bearing 6, a hinge pin 7, a support rod 8, and a wear-resistant rubber base plate 9.

[0028] Overall structure: The bottom of the support frame 3 is equipped with four sets of omnidirectional casters to provide mobility for the equipment. The support frame 3 is equipped with several sets of support components, each set of support components including push rod support 2, main connecting rod 4, two sets of support rods 8, two sets of small connecting rods 5, two sets of linear bearings 6 and two sets of hinge pins 7.

[0029] Connection and Movement Relationship: The push rod support 2 is used to fix the electric push rod 1, and its tail end is hinged to the support frame 3. Two sets of linear bearings 6 and hinge pins 7 are respectively installed at both ends of the support frame 3, with the two sets of hinge pins 7 located above the ends of the main connecting rod 4 and the two sets of linear bearings 6 located below the ends of the main connecting rod 4. The two sets of support rods 8 can slide longitudinally within the corresponding linear bearings 6, and a wear-resistant rubber base plate 9 is fixedly installed at the bottom of each set of linear bearings 6. The top end of the electric push rod 1 is hinged to the middle of the main connecting rod 4. The two sets of small connecting rods 5 are the first connecting rod 51 and the second connecting rod 52, respectively. The two ends of the first connecting rod 51 are hinged to the hinge pins 7 and one end of the main connecting rod 4, respectively, and the two ends of the second connecting rod 52 are hinged to one end of the main connecting rod 4 and the top end of the support rod 8, respectively.

[0030] Working Principle: When the equipment reaches the designated working area, the operator presses the locking button, and the electric actuator 1 begins to operate. The extension and retraction of the electric actuator 1 synchronously drives the two sets of support rods 8 to rise and fall through the main connecting rod 4 and the small connecting rod 5, realizing the switching of the locking mechanism between the moving and locked states. When the electric actuator 1 retracts, the locking mechanism is in the moving state. At this time, the support rods 8 drive the wear-resistant rubber base plate 9 to rise, the swivel casters contact the ground, and the wear-resistant rubber base plate 9 leaves the ground, allowing the equipment to move freely. When the electric actuator 1 extends, the locking mechanism is in the locked state. At this time, the support rods 8 drive the wear-resistant rubber base plate 9 to descend, the wear-resistant rubber base plate 9 contacts the ground, the swivel casters leave the ground, and the equipment is stably locked.

[0031] Movement state: When the equipment needs to be moved, the electric actuator 1 is in the retracted state, the support rod 8 drives the wear-resistant rubber base plate 9 to rise, the swivel casters contact the ground, and the equipment can move freely.

[0032] Locked State: When the equipment reaches the designated work area, the operator presses the lock button, the electric push rod 1 extends, and through the main connecting rod 4 and the small connecting rod 5, it drives the support rod 8 to descend, the wear-resistant rubber base plate 9 contacts the ground, the swivel casters leave the ground, and the equipment is stably locked.

[0033] Unlocking and Moving: When the equipment needs to be moved again, the operator presses the unlock button, the electric push rod 1 retracts, the support rod 8 drives the wear-resistant rubber base plate 9 to rise, the swivel casters contact the ground, and the equipment resumes its moving state.

[0034] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A locking mechanism, comprising a support frame (3) with four sets of casters mounted on its bottom, characterized in that: The support frame (3) is provided with several sets of support components, which include push rod support (2), main connecting rod (4), two sets of support rods (8), two sets of small connecting rods (5), two sets of linear bearings (6) and two sets of hinge pins (7). The push rod support (2) is used to fix the electric push rod (1), and its tail end is hinged to the support frame (3); two sets of linear bearings (6) and hinge pins (7) are respectively installed at both ends of the support frame (3), wherein the two sets of hinge pins (7) are located above the two ends of the main connecting rod (4), and the two sets of linear bearings (6) are located below the two ends of the main connecting rod (4). The two sets of support rods (8) can slide longitudinally in the corresponding linear bearings (6), and each set of linear bearings (6) is fixedly mounted with a base plate (9); the top of the electric actuator (1) is hinged to the middle of the main connecting rod (4); there are two sets of small connecting rods (5), namely the first connecting rod (51) and the second connecting rod (52). The two ends of the first connecting rod (51) are respectively hinged to the hinge pin (7) and one end of the main connecting rod (4), and the two ends of the second connecting rod (52) are respectively hinged to one end of the main connecting rod (4) and the top of the support rod (8).

2. The locking mechanism according to claim 1, characterized in that, Through the extension and retraction of the electric actuator (1), the main connecting rod (4) and the small connecting rod (5) can synchronously drive the two sets of support rods (8) to rise and fall, thereby realizing the switching of the locking mechanism between the moving state and the locking state: When the electric push rod (1) retracts, the locking mechanism is in a moving state. At this time, the support rod (8) drives the base plate (9) to rise, the caster wheel contacts the ground, and the base plate (9) leaves the ground. When the electric push rod (1) extends, the locking mechanism is in a locked state. At this time, the support rod (8) drives the base plate (9) to fall, the base plate (9) contacts the ground, and the caster wheel leaves the ground.

3. A locking mechanism according to claim 1, characterized in that, The bottom of the base plate (9) is provided with an anti-slip rubber pad.

4. A locking mechanism according to claim 1, characterized in that, The number of support components is two sets, with their four base plates (9) located at the four corners of the support frame (3).

5. A locking mechanism according to claim 1, characterized in that, The electric actuator (1) is connected to an external control system, and the extension and retraction of the electric actuator (1) can be controlled by the control system.

6. A locking mechanism according to claim 1, characterized in that, The main connecting rod (4), support rod (8) and small connecting rod (5) are all made of high-strength alloy steel.

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