Synchronous control trundle locking device

Abstract

The utility model provides a synchronous control trundle locking device which comprises three transmission rods which are respectively marked as a first transmission rod, a second transmission rod and a third transmission rod, the first transmission rod and the third transmission rod are arranged in parallel, the cross section of the first transmission rod and the cross section of the third transmission rod are hexagonal, the first transmission rod and the third transmission rod are respectively connected with two trundles, and the trundles are universal trundles with central control full locks. The first transmission rod and the third transmission rod penetrate through hexagonal through holes in the central master locks of the corresponding trundles respectively, the trundles are assembled on a base plate, and the base plate is a part of equipment. The first transmission rod is fixedly connected with a straight gear, the three transmission rods conduct transmission through bevel gears, the second transmission rod is rotationally connected with a supporting block, the supporting block is fixed to the upper surface of the base plate, the straight gear is controlled by a driving mechanism to rotate so as to drive the first transmission rod to rotate, and synchronous rotation of the first transmission rod and the third transmission rod can be achieved through transmission of the bevel gears. Therefore, synchronous locking or unlocking of the four trundles is achieved. According to the device, locking / unlocking of the four trundles can be controlled at the same time through one driving mechanism, and operation steps are reduced.

Description

Technical Field

[0001] The utility model relates to a synchronous control caster locking device. Background Art

[0002] Universal casters are widely used in industrial production, hospitals, supermarkets and daily life. Due to their small size and high flexibility, vehicles equipped with universal casters are very convenient for short-distance movement. During the use of these vehicles equipped with universal casters, if braking or unlocking is required, most of them have to be operated one by one, which is cumbersome. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present application proposes a synchronously controlled caster locking device.

[0004] In order to achieve the above-mentioned purpose, the present application proposes a synchronously controlled caster locking device, including three transmission rods, which are respectively recorded as a first transmission rod, a second transmission rod and a third transmission rod. The first transmission rod and the third transmission rod are arranged in parallel, and the cross-sections of the two are hexagonal. Two casters are connected to the first transmission rod and the third transmission rod respectively. The casters adopt universal casters with central control full lock. The first transmission rod and the third transmission rod respectively pass through the hexagonal through holes at the central general lock of the corresponding casters, wherein each caster is assembled on a base plate, and the base plate is a part of the equipment. Through the action of each caster, the equipment can be moved or fixed; a spur gear is fixedly connected to the first transmission rod, and the first transmission rod, the second transmission rod and the third transmission rod are driven by a bevel gear. The second transmission rod is rotatably connected to a support block, and the support block is fixed on the upper surface of the base plate. The spur gear is controlled to rotate by a driving mechanism to drive the first transmission rod to rotate. Through the transmission of the bevel gear, the first transmission rod and the third transmission rod can be rotated synchronously to achieve synchronous locking or unlocking of four casters.

[0005] In some embodiments, a first bevel gear is connected to one end of the first transmission rod close to the second transmission rod, a second bevel gear meshing with the first bevel gear is connected to the second transmission rod, a third bevel gear is connected to one end of the second transmission rod close to the third transmission rod, and a fourth bevel gear meshing with the third bevel gear is connected to the third transmission rod.

[0006] In some embodiments, the structure of the driving mechanism is as follows: it includes a fixing seat fixed on the upper surface of the substrate, the fixing seat is hollow inside and has an opening on the top, a limiting block is fixedly connected to the inner side wall of the fixing seat, a limiting rod is rotatably connected to the limiting block, the limiting rod can only rotate compared to the limiting block and will not produce displacement in other directions, the limiting rod includes a vertical portion, a lower horizontal portion connected to the lower end of the vertical portion, and an upper horizontal portion connected to the upper end of the vertical portion, and the lower horizontal portion and the upper horizontal portion are arranged on both sides of the axis of the vertical portion, and the lower horizontal portion is rotatably connected to the limiting block;

[0007] The driving mechanism also includes a pedal button, a spring positioning groove is provided on the lower surface of the pedal button, one end of the return spring is connected to the spring positioning groove, and the other end is connected to the inner bottom plate of the fixing seat, the side surface of the pedal button is provided with a rack meshing with the spur gear along the vertical direction, and a slide groove is provided on the other side surface of the pedal button. When the pedal button is operated, the upper horizontal part can slide along the slide groove, and the groove point at the bottom of the slide groove is recorded as the lower positioning point. The slide groove includes a lateral slide at the top. The lower groove wall of the transverse groove is depressed downward to form a groove point, which is recorded as an upper positioning point. The upper groove wall of the transverse groove is respectively depressed upward to form two groove points, which are respectively recorded as a first guide point and a second guide point. The second guide point and the first guide point are respectively arranged on the left and right sides of the upper positioning point. Initially, the foot pedal button is in a reset state. When the foot pedal button is pressed downward, the upper horizontal part first slides from the lower positioning point to the first guide point. During this process, the reset spring is compressed. When the foot pedal button is released, , the pedal button will move upward by a preset distance. During this process, the upper horizontal part will slide from the first guide point to the upper positioning point, and finally be positioned at the upper positioning point. At this time, the pedal button is in a pressed state, and the switching of the pedal button from the reset state to the pressed state is completed. During this process, the rack drives the spur gear to rotate, and then drives the first transmission rod to rotate. Through the transmission of the bevel gear, the synchronous rotation of the first transmission rod and the third transmission rod can be achieved to achieve synchronous locking of the four casters; when the pedal button is pressed again, the upper horizontal part first slides from the upper positioning point to the second guide point. During this process, the reset spring is compressed. When the pedal button is released, the upper horizontal part slides from the second guide point to the lower positioning point, and finally is positioned at the lower positioning point. The switching of the pedal button from the pressed state to the reset state is completed. During this process, the rack drives the spur gear to rotate, and then drives the first transmission rod to rotate. Through the transmission of the bevel gear, the synchronous rotation of the first transmission rod and the third transmission rod can be achieved to achieve synchronous unlocking of the four casters.

[0008] The beneficial effect of the scheme of the present application is that the above-mentioned synchronous control caster locking device has the advantages of simple structure, reliable operation, low cost and easy interaction. Through a foot pedal button, the locking / unlocking of four casters can be controlled at the same time, reducing the operating steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic structural diagram of a synchronously controlled caster locking device in an embodiment is shown.

[0010] Figure 2 A partial structural schematic diagram of a synchronously controlled caster locking device in an embodiment is shown.

[0011] Figure 3 The exploded structural diagram of the driving mechanism in the embodiment is shown.

[0012] Figure 4 A schematic cross-sectional structure diagram of the driving mechanism in the embodiment is shown.

[0013] Figure 5 A schematic diagram of the structure of the foot pedal button in the embodiment is shown.

[0014] Figure markings: 1-base plate, 2-castor, 3-first transmission rod, 4-second transmission rod, 5-third transmission rod, 6-support block, 7-spur gear, 8-first bevel gear, 9-second bevel gear, 10-third bevel gear, 11-fourth bevel gear, 12-driving mechanism, 1201-fixed seat, 1202-limiting block, 12021-assembly groove, 1203-cylinder head screw, 1204-limiting rod, 12041-lower horizontal part, 12042-vertical part, 12043-upper horizontal part, 1205-hexagonal nut, 1206-foot button, 12061-spring positioning groove, 1207-reset spring, 1208-rack, 1209-slide groove, 12091-lower positioning point, 12092-upper positioning point, 12093-first guide point, 12094-second guide point. DETAILED DESCRIPTION

[0015] The specific implementation of the present application is further described below in conjunction with the accompanying drawings.

[0016] In the description of the present application, it should be understood that the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0017] like Figures 1 to 5 As shown, the synchronously controlled caster locking device involved in the present application includes three transmission rods, which are respectively denoted as the first transmission rod 3, the second transmission rod 4 and the third transmission rod 5. The first transmission rod 3 and the third transmission rod 5 are arranged in parallel, and the cross-sections of the two are hexagonal. Two casters 2 are respectively connected to the first transmission rod 3 and the third transmission rod 5. The casters 2 adopt universal casters with central control full lock. The first transmission rod 3 and the third transmission rod 5 respectively pass through the hexagonal through holes at the central general lock of the corresponding casters 2. By controlling the synchronous rotation of the first transmission rod 3 and the third transmission rod 5, each caster 2 can be synchronously controlled to switch between the locked and unlocked states, wherein each caster 2 is assembled on a base plate 1, and the base plate 1 is a part of the relevant equipment. The relevant equipment can be a hospital bed, medical equipment, etc., and the equipment can be moved or fixed through the action of each caster 2.

[0018] A spur gear 7 is fixedly connected to the first transmission rod 3, a first bevel gear 8 is connected to one end of the first transmission rod 3 close to the second transmission rod 4, a second bevel gear 9 meshing with the first bevel gear 8 is connected to the second transmission rod 4, the second transmission rod 4 is rotatably connected to a support block 6, the support block 6 is fixed to the upper surface of the base plate 1, the support block 6 is used to support the second transmission rod 4, a third bevel gear 10 is connected to one end of the second transmission rod 4 close to the third transmission rod 5, a fourth bevel gear 11 meshing with the third bevel gear 10 is connected to the third transmission rod 5, the spur gear 7 is controlled to rotate by a driving mechanism 12 to drive the first transmission rod 3 to rotate, and the first transmission rod 3 and the third transmission rod 5 can be rotated synchronously through the transmission of the bevel gears, so as to achieve synchronous locking or unlocking of the four casters 2.

[0019] In this embodiment, the structure of the driving mechanism 12 is as follows: it includes a fixing seat 1201 fixed on the upper surface of the substrate 1, the interior of the fixing seat 1201 is hollow and has an opening on the top, a limiting block 1202 is fixedly connected to the inner side wall of the fixing seat 1201, specifically, the limiting block 1202 is in contact with an inner side wall of the fixing seat 1201, and the two are fixedly connected by a cylindrical head screw 1203, the limiting block 1202 is rotatably connected to a limiting rod 1204, compared with the limiting block 1202, the limiting rod 1204 can only rotate and will not produce displacement in other directions, specifically, the limiting rod 1204 includes a vertical portion 12042, a lower horizontal portion 12041 connected to the lower end of the vertical portion 12042, And an upper horizontal portion 12043 connected to the upper end of the vertical portion 12042, and the lower horizontal portion 12041 and the upper horizontal portion 12043 are arranged on both sides of the axis of the vertical portion 12042, the lower horizontal portion 12041 is rotatably connected to the limit block 1202, for example, an external thread structure is provided on the lower horizontal portion 12041, and an assembly groove 12021 is provided on the surface of the limit block 1202 close to the inner wall of the fixed seat 1201, the lower horizontal portion 12041 passes through the limit block 1202, and a part of the lower horizontal portion 12041 is located at the assembly groove 12021, and a hexagonal nut 1205 is threadedly connected at the part of the lower horizontal portion 12041, so that the lower horizontal portion 12041 can only perform rotational movement.

[0020] The driving mechanism 12 also includes a pedal button 1206, a spring positioning groove 12061 is provided on the lower surface of the pedal button 1206, one end of the return spring 1207 is connected to the spring positioning groove 12061, and the other end is connected to the inner bottom plate of the fixing seat 1201, the side surface of the pedal button 1206 is provided with a rack 1208 meshing with the spur gear 7 along the vertical direction, and the other side surface of the pedal button 1206 is provided with a slide groove 1209. When the pedal button 1206 is operated, the upper horizontal portion 12043 can move along the slide groove 120 9 sliding, the groove point at the bottom of the slide groove 1209 is recorded as the lower positioning point 12091, the slide groove 1209 includes a transverse slide groove 1209 at the top, the lower groove wall of the transverse slide groove 1209 is recessed downward to form a groove point, recorded as the upper positioning point 12092, the upper groove wall of the transverse slide groove 1209 is recessed upward to form two groove points, the two groove points are respectively recorded as the first guide point 12093 and the second guide point 12094, the second guide point 12094 and the first guide point 12093 are respectively arranged on the left and right sides of the upper positioning point 12092. Initially, the pedal button 1206 is in a reset state. When the pedal button 1206 is pressed downward, the upper horizontal portion 12043 first slides from the lower positioning point 12091 to the first guide point 12093. During this process, the reset spring 1207 is compressed. When the pedal button 1206 is released, the pedal button 1206 moves upward by a preset distance due to the action of the reset spring 1207. During this process, the upper horizontal portion 12043 moves from the first guide point 12091 to the first guide point 12093. 2093 slides to the upper positioning point 12092 and is finally positioned at the upper positioning point 12092. At this time, the foot pedal button 1206 is in a pressed state, and the switching of the foot pedal button 1206 from a reset state to a pressed state is completed. During this process, the rack 1208 drives the spur gear 7 to rotate, and then drives the first transmission rod 3 to rotate. Through the transmission of the bevel gear, the synchronous rotation of the first transmission rod 3 and the third transmission rod 5 can be achieved, so as to achieve synchronous locking of the four casters 2.When the foot pedal button 1206 is pressed again, the upper horizontal portion 12043 first slides from the upper positioning point 12092 to the second guide point 12094. During this process, the reset spring 1207 is compressed. When the foot pedal button 1206 is released, due to the action of the reset spring 1207, the upper horizontal portion 12043 slides from the second guide point 12094 to the lower positioning point 12091, and is finally positioned at the lower positioning point 12091. At this point, the foot pedal button 1206 is switched from a pressed state to a reset state. During this process, the rack 1208 drives the spur gear 7 to rotate, and then drives the first transmission rod 3 to rotate. Through the transmission of the bevel gear, the first transmission rod 3 and the third transmission rod 5 can be rotated synchronously, so as to achieve synchronous unlocking of the four casters 2.

[0021] The distance between the upper positioning point 12092 and the lower positioning point 12091 is determined by the rotation angle of the first transmission rod 3 and the size of the spur gear 7 and the rack 1208, so as to ensure that when the upper horizontal portion 12043 of the limit rod 1204 falls on the two positioning points, the locking and unlocking of the caster can be completed. The setting of the first guide point 12093 can ensure that when the pedal button 1206 is pressed downward, the upper horizontal portion 12043 can be finally positioned at the upper positioning point 12092; the setting of the second guide point 12094 can ensure that when the pedal button 1206 is manipulated to transition to the reset state, the upper horizontal portion 12043 can be finally positioned at the lower positioning point 12091.

[0022] The synchronously controlled caster locking device involved in the present application has the advantages of simple structure, reliable operation, low cost and easy interaction. It can control the locking / unlocking of four casters at the same time through a foot pedal button, reducing the operating steps.

[0023] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A synchronous control caster locking device, characterized in that: The invention comprises three transmission rods, which are respectively denoted as the first transmission rod, the second transmission rod and the third transmission rod. The first transmission rod and the third transmission rod are arranged in parallel, and the cross-sections of the two are hexagonal. Two casters are respectively connected to the first transmission rod and the third transmission rod. The casters are universal casters with central control full lock. The first transmission rod and the third transmission rod respectively pass through the hexagonal through holes at the central general lock of the corresponding casters, wherein each caster is assembled on a base plate, and the base plate is a part of the equipment. Through the action of each caster, the equipment can be moved or fixed; a spur gear is fixedly connected to the first transmission rod, and the first transmission rod, the second transmission rod and the third transmission rod are driven by a bevel gear. The second transmission rod is rotatably connected to a support block, and the support block is fixed on the upper surface of the base plate. The spur gear is controlled to rotate by a driving mechanism to drive the first transmission rod to rotate. Through the transmission of the bevel gear, the first transmission rod and the third transmission rod can be rotated synchronously to achieve synchronous locking or unlocking of the four casters.

2. The synchronous control caster locking device according to claim 1, characterized in that: A first bevel gear is connected to one end of the first transmission rod close to the second transmission rod, a second bevel gear meshing with the first bevel gear is connected to the second transmission rod, a third bevel gear is connected to one end of the second transmission rod close to the third transmission rod, and a fourth bevel gear meshing with the third bevel gear is connected to the third transmission rod.

3. The synchronous control caster locking device according to claim 1, characterized in that: The structure of the driving mechanism is as follows: it includes a fixing seat fixed on the upper surface of the base plate, the fixing seat is hollow inside and has an opening on the top, a limiting block is fixedly connected to the inner side wall of the fixing seat, a limiting rod is rotatably connected to the limiting block, the limiting rod can only rotate compared to the limiting block and will not produce displacement in other directions, the limiting rod includes a vertical portion, a lower horizontal portion connected to the lower end of the vertical portion, and an upper horizontal portion connected to the upper end of the vertical portion, and the lower horizontal portion and the upper horizontal portion are arranged on both sides of the axis of the vertical portion, and the lower horizontal portion is rotatably connected to the limiting block; The driving mechanism also includes a pedal button, a spring positioning groove is provided on the lower surface of the pedal button, one end of the return spring is connected to the spring positioning groove, and the other end is connected to the inner bottom plate of the fixed seat, the side surface of the pedal button is provided with a rack meshing with the spur gear along the vertical direction, and a slide groove is provided on the other side surface of the pedal button. When the foot pedal button is operated, the upper horizontal part can slide along the slide groove, and the groove point at the bottom of the slide groove is recorded as the lower positioning point, and the slide groove includes a transverse slide groove at the top, and the lower groove wall of the transverse slide groove is recessed downward to form a groove point, which is recorded as the upper positioning point, and the upper groove wall of the transverse slide groove is recessed upward to form two groove points, which are respectively recorded as the first guide point and the second guide point, respectively, the second guide point and The first guide point is disposed on the left and right sides of the upper positioning point; initially, the foot pedal button is in a reset state, and when the foot pedal button is pressed downward, the upper horizontal part first slides from the lower positioning point to the first guide point, during which the reset spring is compressed, and when the foot pedal button is released, the foot pedal button will move upward by a preset distance, during which the upper horizontal part will slide from the first guide point to the upper positioning point, and finally be positioned at the upper positioning point, at which point the foot pedal button is in a pressed state, and the switching of the foot pedal button from the reset state to the pressed state is completed, during which the rack drives the spur gear to rotate, and then drives the first transmission rod to rotate, and through the transmission of the bevel gear, the first transmission rod and the third transmission rod can be rotated synchronously, so as to achieve synchronous locking of the four casters; When the foot pedal button is pressed again, the upper horizontal part first slides from the upper positioning point to the second guide point. During this process, the return spring is compressed. When the foot pedal button is released, the upper horizontal part slides from the second guide point to the lower positioning point, and is finally positioned at the lower positioning point. At this point, the foot pedal button is switched from a pressed state to a reset state. During this process, the rack drives the spur gear to rotate, and then drives the first transmission rod to rotate. Through the transmission of the bevel gear, the first transmission rod and the third transmission rod can be rotated synchronously, so as to achieve synchronous unlocking of the four casters.

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