Brake device and bedside table

Abstract

A brake device and a bedside table, for use in reducing the complexity of the structure of a brake device. The brake device comprises a brake assembly and a brake release assembly. The brake assembly comprises a first trigger member and a brake member. The brake member is located at the vertical bottom of the first trigger member; the first trigger member is fixedly provided with a first matching member; the first trigger member can vertically move downwards, so that the brake member comes into contact with the ground to brake, and the first trigger member can also vertically move upwards, so that the brake member leaves the ground to release braking. The brake release assembly comprises a second matching member. The second matching member can transversely move in the backward direction to the position where the second matching member matches the first matching member, so as to stop the first matching member from vertically moving upwards, so that the brake member is kept in contact with the ground to brake, and the second matching member can transversely move in the forward direction to release the matching with the first matching member, so as to allow the first matching member to vertically move upwards, so that the brake member leaves the ground to release braking.

Description

Brake device and bedside table Technical Field

[0001] The present invention relates to the field of machinery, and in particular to a brake device and a bedside table. Background Art

[0002] Bedside tables are equipped with casters for easy mobility. Caster brakes are available in wheel brakes and floor brakes. Wheel brakes achieve braking by limiting the rotation of the caster. Casters with wheel brakes have a larger diameter, resulting in a higher bedside table base and preventing use with beds with lower bases. Floor brakes achieve braking by direct friction with the ground. Caster diameters can be smaller, lowering the height of the bedside table base and making it easier to use with beds with lower bases. Floor brakes that utilize a linkage mechanism include multiple rotating parts and are complex in structure.

[0003] Summary of the Invention

[0004] The object of the present invention is to provide a brake device and a bedside table, so as to improve the complex structure of the brake device.

[0005] In a first aspect, the present invention provides a brake device, comprising a brake assembly and a brake release assembly;

[0006] The brake assembly includes a first trigger and a brake member, wherein the brake member is located at the vertical bottom of the first trigger. The first trigger is fixedly provided with a first mating member. The first trigger can move vertically downward to make the brake member contact the ground to brake, and the first trigger can also move vertically upward to make the brake member leave the ground to release the brake.

[0007] The brake release assembly includes a second mating part, which can move laterally in the opposite direction to a position mating with the first mating part to block the vertical upward movement of the first mating part and keep the brake part in contact with the ground to brake. The second mating part can move laterally in the forward direction to release the mating with the first mating part to allow the first mating part to move vertically upward and make the brake part leave the ground to release the brake.

[0008] In one or more embodiments, the brake assembly further includes a first elastic element, which vertically supports the first trigger member so that the first trigger member can move vertically upward and vertically downward.

[0009] In one or more embodiments, the brake release assembly also includes a second trigger member and a transmission member, the second matching member is fixedly arranged on the transmission member, the second trigger member and the transmission member form a first inclined sliding pair, and the second trigger member can move vertically to drive the transmission member to move forward laterally.

[0010] In one or more embodiments, the brake release assembly further includes a second elastic element, which laterally supports the transmission member to drive the transmission member to move in a laterally reverse direction.

[0011] In one or more embodiments, the second trigger member includes a third inclined surface, which is inclined downward, and the transmission member includes a fourth inclined surface, which is inclined upward. The third inclined surface and the fourth inclined surface are fitted together to form the first inclined surface sliding pair, and the second trigger member moves vertically downward to drive the transmission member to move forward laterally.

[0012] In one or more embodiments, the first matching member includes a first inclined surface, the first inclined surface is inclined upward, the second matching member includes a second inclined surface, the second inclined surface is inclined downward, and the first inclined surface and the second inclined surface are used to fit together to form a second inclined surface sliding pair;

[0013] The second matching piece moves in the opposite direction laterally, and the second inclined surface abuts against the first inclined surface to lock the second inclined surface sliding pair, thereby preventing the first matching piece from moving vertically upward;

[0014] The second matching piece moves forward in the transverse direction, and the second inclined surface loosens the first inclined surface to unlock the second inclined surface sliding pair. The first inclined surface can slide relative to the second inclined surface, allowing the first matching piece to move vertically upward.

[0015] In one or more embodiments, the first matching member further includes a first vertical surface, the first vertical surface continuing vertically below the first inclined surface, and the second matching member further includes a second vertical surface, the second vertical surface continuing vertically above the second inclined surface, and the first vertical surface and the second vertical surface are used to fit together to form a vertical surface sliding pair;

[0016] The first vertical surface can be in contact with and block the second vertical surface, the second matching piece stops laterally, and the first vertical surface can slide relative to the second vertical surface, allowing the first matching piece to move vertically.

[0017] In one or more embodiments, the transmission member supports the second trigger member through the first inclined sliding pair.

[0018] In one or more embodiments, the second triggering member is located between the first inclined sliding pair and the second matching member in the transverse direction.

[0019] In one or more embodiments, the transmission member includes a first longitudinal rod, a second longitudinal rod, a first cross rod and a second cross rod, the first longitudinal rod, the second longitudinal rod, the first cross rod and the second cross rod are interconnected to enclose a center hole, the first longitudinal rod provides the second mating member, the second longitudinal rod and the second trigger member form the first inclined sliding pair, and the second trigger member is located in the center hole.

[0020] In a second aspect, the present invention provides a bedside table, comprising a movable base frame and the above-mentioned brake device, wherein the brake device is mounted on the movable base frame.

[0021] The embodiments of the present invention have at least the following beneficial effects:

[0022] The brake device realizes braking and releasing of the floor brake device through a slider device composed of a first matching part that moves vertically and a second matching part that moves laterally. Compared with the floor brake device using a connecting rod mechanism, it avoids the design of the rotation trajectory of the connecting rod structure and the conversion structure between rotation and linear motion. The structure is simpler and more reliable and occupies less space.

[0023] Summary of the Figures

[0024] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0025] Figure 1 is an oblique view of the brake device in the released state;

[0026] FIG2 is a front view of the brake device in the released state;

[0027] FIG3 is an oblique view of the brake device in a braking state;

[0028] FIG4 is a front view of the brake device in a braking state;

[0029] FIG5 is an oblique view of the brake assembly;

[0030] FIG6 is an oblique view of the second trigger member;

[0031] FIG7 is an oblique view of the transmission member and the second elastic element;

[0032] FIG8 is an oblique view of the movable chassis on which the brake device is installed.

[0033] Reference numerals: 1-brake assembly; 2-brake release assembly; 3-first trigger member; 4-braking member; 5-first elastic element; 6-movable chassis; 7-rod portion of first trigger member; 8-flat plate portion; 9-cylinder portion of first trigger member; 10-second trigger member; 11-transmission member; 12-second elastic element; 13-rod portion of second trigger member; 14-first inclined plane sliding pair; 15-third inclined plane; 16-fourth inclined plane; 17-vertical plate portion; 18-second longitudinal rod; 19-first cross rod; 20-second cross rod; 21-cylinder portion of transmission member; 22-first matching member; 23-first inclined plane; 24-first vertical plane; 25-second matching member; 26-second inclined plane; 27-second vertical plane; 28-second inclined plane sliding pair; 29-vertical plane sliding pair; 30-first longitudinal rod; 31-center hole; 32-tubular frame; 33-roller; 34-wheel arch; 35-limiting rod.

[0034] Specific embodiments of the present invention

[0035] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0036] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0037] The terms "first," "second," and the like may be used interchangeably to distinguish one feature from another and are not intended to imply that each feature must be located as shown in each embodiment.

[0038] As shown in FIG. 1 to FIG. 4 , the brake device includes a brake assembly 1 and a brake release assembly 2 .

[0039] As shown in FIG. 1 to FIG. 5 , the brake assembly 1 includes a first triggering member 3 and a brake member 4 .

[0040] As shown in Figures 1 to 5, the first trigger member 3 can be triggered by an operator to brake. The first trigger member 3 is fixed in the horizontal direction and can move vertically. The first trigger member 3 may include a rod portion 7 extending vertically.

[0041] As shown in Figures 1 to 5, the brake member 4 can be actuated by the first trigger member 3 to rub against the ground to brake. As shown in Figure 4, the first trigger member 3 can move vertically downward and remain in a low position, so that the brake member 4 contacts the ground to brake. The first trigger member 3 can move vertically upward and remain in a high position, so that the brake member 4 leaves the ground to release the brake. The brake member 4 can be a rubber pad with good elasticity. The brake member 4 is located at the vertical bottom of the first trigger member 3. As shown in Figures 2 and 4, the brake member 4 can be fixed to the vertical bottom of the first trigger member 3 by a screw (not shown in the figure). The screw enters from the brake member 4, passes through the brake member 4, and is screwed into the threaded hole of the first trigger member 3. The screw head presses the brake member 4 and is located in the countersunk groove of the brake member 4.

[0042] As shown in Figures 1 to 5, the first trigger member 3 includes a first matching member 22. The first matching member 22 can be a block-shaped member and can be fixed on the transverse end surface of the rod portion 7 and protrude from the transverse end surface of the rod portion 7.

[0043] As shown in Figures 1 to 4, the brake release assembly 2 includes a second matching member 25. The second matching member 25 can be a block-shaped member, which is fixed vertically and can move laterally.

[0044] As shown in Figure 4, the brake device is in the braking state. The first trigger member 3 is in the low position, the brake member 4 contacts the ground to brake, and the second mating member 25 is located vertically above the first mating member 22, blocking the vertical upward movement of the first mating member 22 and restricting the first trigger member 3 to remain in the low position. The brake device remains in the braking state.

[0045] As shown in Figure 2, the brake device is in the released state. The first trigger member 3 is in a high position, the brake member 4 is off the ground to release the brake, and the second matching member 25 is located laterally to the first matching member 22, allowing the first matching member 22 to move vertically upward and downward.

[0046] From Figure 2 to Figure 4, the brake device transitions from the released state to the braked state. Under the action of a downward triggering force (e.g., a downward pedaling motion described below), the first trigger member 3 moves vertically downward, causing the brake member 4 to contact the ground. The first engaging member 22 moves vertically downward along with the first trigger member 3, while the second engaging member 25 moves laterally in the opposite direction. "Laterally in the opposite direction" refers to movement laterally toward the first engaging member 22, vertically above the first engaging member 22, thereby blocking the first engaging member 22 from moving upward.

[0047] From Figure 4 to Figure 2 , the brake device changes from the braking state to the released state. Under the action of the operator's triggering force, the second mating member 25 moves in a positive lateral direction, where "positive lateral direction" refers to a direction away from the first mating member 22, moving away from the vertical upper side of the first mating member 22 to the side of the first mating member 22, allowing the first mating member 22 to move vertically upward. The first trigger member 3 then moves vertically upward, lifting the brake member 4 off the ground.

[0048] The brake device realizes the braking and releasing of the ground brake device through a slider device composed of a first matching member 22 that moves vertically and a second matching member 25 that moves laterally. Compared with the ground brake device using a connecting rod mechanism, it avoids the design of the rotation trajectory of the connecting rod structure and the conversion structure between rotation and linear motion. The structure is simpler and more reliable and occupies less space.

[0049] As shown in Figures 1 to 5, the brake assembly 1 may also include a first elastic element 5. The first trigger member 3 is vertically supported by the first elastic element 5 so as to be movable vertically. One vertical end of the first elastic element 5 is vertically supported by the mounting base (such as the movable chassis 6 described later), and the other vertical end of the first elastic element 5 supports the first trigger member 3. When the operator applies a downward trigger force to the first trigger member 3 (such as stepping down as described later), the first trigger member 3 can overcome the elastic force of the first elastic element 5 and move vertically downward. When the operator removes the trigger force applied to the first trigger member 3, the first trigger member 3 can move vertically upward under the elastic force of the first elastic element 5, so that the first trigger member 3 can automatically move vertically upward without the operator applying another trigger force.

[0050] As shown in Figures 1 to 5 , the first elastic element 5 can be a vertically extending coil spring. The first trigger member 3 can also include a flat plate portion 8 and a cylindrical portion 9. The flat plate portion 8 protrudes outward from the rod portion 7 and is connected to the cylindrical portion 9 on both sides, with its opening facing downward. The vertical upper end of the first elastic element 5 extends into and supports the cylindrical portion 9, thereby vertically supporting the first trigger member 3.

[0051] As shown in FIG. 1 to FIG. 4 , the brake release assembly 2 may further include a second trigger member 10 and a transmission member 11 .

[0052] As shown in Figures 2 and 4, the second trigger member 10 can be triggered by the operator to cause the second engaging member 25 to move laterally and positively, releasing the brake. The second trigger member 10 is laterally fixed and vertically movable. The second trigger member 10 may include a vertically extending rod portion 13. The second trigger member 10 includes a third inclined surface 15.

[0053] As shown in Figures 2, 4 and 6, the second trigger member 10 may include a vertical plate portion 17, which is fixed on both sides of the rod portion 13 of the second trigger member 10 and extends laterally. The lateral end of each vertical plate portion 17 has an inclined edge, and the inclined edges of the two vertical plate portions 17 together constitute a third inclined surface 15.

[0054] As shown in Figures 2 and 4, the transmission member 11 is fixed vertically and can move laterally. The transmission member 11 includes a fourth inclined surface 16. The third inclined surface 15 and the fourth inclined surface 16 are in contact and can slide relative to each other. The second trigger member 10 and the transmission member 11 form a first inclined surface sliding pair 14.

[0055] As shown in FIG. 2 and FIG. 4 , the transmission member 11 may include a second longitudinal rod 18 , the second longitudinal rod 18 extending in the longitudinal direction, and the fourth inclined surface 16 is located on one side of the second longitudinal rod 18 in the transverse direction.

[0056] 1 to 4 and 7 , the second engaging member 25 may be fixed to the transmission member 11. The second engaging member 25 may be located at a transverse end of the transmission member 11 and may be provided by a first longitudinal rod 30 extending longitudinally.

[0057] As shown in Figures 1 to 4, when an operator applies a trigger force to the second trigger member 10 (e.g., by pressing downward, as described below), the second trigger member 10 moves vertically and, through the first inclined sliding pair 14, pushes against the transmission member 11, causing the transmission member 11 to move in a positive lateral direction, thereby causing the second mating member 25 fixed to the transmission member 11 to move in a positive lateral direction. The vertically moving second trigger member 10 and the laterally moving transmission member 11 form a slider assembly that enables the second mating member 25 to move in a positive lateral direction, thereby releasing the brake. Compared to a linkage mechanism, this eliminates the need for a rotational trajectory design for the linkage structure and the need for a conversion mechanism between rotation and linear motion, resulting in a simpler, more reliable structure and a smaller footprint.

[0058] As shown in Figures 1 to 4 and Figure 7, the brake release assembly 2 may also include a second elastic element 12. The transmission member 11 is laterally supported by the second elastic element 12. One lateral end of the second elastic element 12 is laterally supported by the mounting base (such as the movable chassis 6 described later), and the other lateral end of the second elastic element 12 supports the transmission member 11. The operator applies a trigger force to the second trigger member 10 (such as stepping down to be described later), and the second trigger member 10 moves vertically and pushes the transmission member 11 through the first inclined sliding pair 14. The transmission member 11 overcomes the elastic force of the second elastic element 12 and moves forward laterally. When the operator removes the trigger force applied to the second trigger member 10, the elastic force of the second elastic element 12 can push the transmission member 11 to move in the opposite direction laterally, thereby causing the second matching member 25 fixed on the transmission member 11 to move in the opposite direction laterally, so that the transmission member 11 can automatically move in the opposite direction laterally without the operator applying another trigger force to the second trigger member 10. When the transmission member 11 moves in the opposite direction laterally, it also pushes the second trigger member 10 through the first inclined sliding pair 14, and the second trigger member 10 moves in the vertical direction.

[0059] As shown in Figures 1 to 4 and 7, the second elastic element 12 can be a coil spring extending in the transverse direction. The transmission member 11 can also include a first crossbar 19 and a second crossbar 20. The first crossbar 19 and the second crossbar 20 extend in the transverse direction and have a transversely extending cylindrical portion 21 at the transverse end. The transverse end of the second elastic element 12 extends into and supports the cylindrical portion 21, thereby laterally supporting the transmission member 11.

[0060] As shown in Figures 2 and 4, the third inclined surface 15 of the second trigger member 10 can be tilted downward, and the fourth inclined surface 16 of the transmission member 11 can be tilted upward. The third inclined surface 15 and the fourth inclined surface 16 are attached to form a first inclined surface sliding pair 14. The second trigger member 10 moves vertically downward under the action of the trigger force, driving the transmission member 11 to move horizontally forward to release the brake. The operator applies a downward trigger force to the first trigger member 3 and the second trigger member 10 to brake and release the brake. The brake device in the form of a ground brake is installed in a position close to the ground and is relatively low. The downward trigger force makes it convenient for the operator to use the foot to press down on the first trigger member 3 and the second trigger member 10 to trigger. If the operator needs to apply an upward trigger force to brake and release the brake, it is inconvenient to use the foot to hook the trigger, and using the hand to trigger requires bending over, which is not suitable for use by the elderly or patients who are unable to bend over.

[0061] As shown in Figures 2 and 4, the transmission member 11 can support the second trigger member 10 through the first inclined surface sliding pair 14. The third inclined surface 15 of the second trigger member 10 is supported on the fourth inclined surface 16 of the transmission member 11 to form the first inclined surface sliding pair 14, which has a simple and reliable structure.

[0062] As shown in Figures 1 to 5 , the first mating member 22 may be provided with a first inclined surface 23 at its transverse end. As shown in Figures 1 to 4 and 7 , the second mating member 25 may be provided with a second inclined surface 26 at its transverse end. As shown in Figures 2 and 4 , the first inclined surface 23 of the first mating member 22 may be inclined upward, while the second inclined surface 26 of the second mating member 25 may be inclined downward. The first inclined surface 23 and the second inclined surface 26 may abut against each other and slide relative to each other, forming a second inclined surface sliding pair 28 as shown in Figure 4 . The second mating member 25 moves laterally to lock / unlock the second inclined surface sliding pair 28, thereby preventing / allowing the first mating member 22 from moving vertically upward. This structure is simple and reliable.

[0063] As shown in Figure 4, the brake device is in the braking state. The first elastic element 5 vertically supports the first trigger member 3 to the low position, and the brake member 4 contacts and rubs against the ground. The elastic force of the second elastic element 12 pushes the transmission member 11 laterally, so that the second inclined surface 26 of the second matching member 25 presses against the first inclined surface 23 of the first matching member 22. The second inclined surface sliding pair 28 is locked, and the first inclined surface 23 and the second inclined surface 26 cannot slide relative to each other. The elastic force of the first elastic element 5 cannot push the first trigger member 3 to the high position. The first trigger member 3 is restricted to remain in the low position, and the brake device remains in the braking state.

[0064] As shown in Figure 2, the brake device is in the released state. The first elastic element 5 vertically supports the first trigger member 3 to a high position, and the brake member 4 is off the ground, free from friction. The second inclined surface 26 of the second mating member 25 is disengaged from the first inclined surface 23 of the first mating member 22, and no second inclined surface sliding pair 28 is formed. The second mating member 25 is positioned laterally to the first mating member 22, allowing the first mating member 22 to move vertically.

[0065] From Figure 2 to Figure 4 , the brake device transitions from the released state to the braked state. Referring first to Figure 2 , under the action of a downward triggering force applied by the operator, the first trigger member 3 overcomes the elastic force of the first elastic element 5 and moves vertically downward. Referring again to Figure 4 , as the first trigger member 3 moves vertically downward, the first inclined surface 23 of the first mating member 22 abuts the second inclined surface 26 of the second mating member 25, forming a second inclined surface sliding pair 28. The elastic force of the second elastic element 12 laterally pushes against the second mating member 25, causing the second inclined surface 26 of the second mating member 25 to slide horizontally in the opposite direction on the first inclined surface 23 of the first mating member 22 via the second inclined surface sliding pair 28. As the first mating member 22 continues to move vertically downward with the first trigger member 3, the second inclined surface 26 of the second mating member 25 slides diagonally upward relative to the first inclined surface 23 of the first mating member 22 via the second inclined surface sliding pair 28. The transmission member 11 moves laterally in the opposite direction, pushing the second trigger member 10 vertically upward via the first inclined surface sliding pair 14.

[0066] Referring to FIG4 , the brake device changes from a braking state to a released state. Referring first to FIG4 , under the action of a downward triggering force applied by the operator, the second trigger member 10 moves vertically downward and, through the first inclined sliding pair 14, pushes the transmission member 11 to overcome the elastic force of the second elastic element 12, causing the second mating member 25 to move horizontally and positively. The second mating member 25 then moves horizontally and positively along with the transmission member 11. The second inclined surface 26 of the second mating member 25 no longer pushes against the first inclined surface 23 of the first mating member 22. The second inclined sliding pair 28 is unlocked, and the first elastic element 5 vertically pushes the first trigger member 3 to move vertically upward. The first mating member 22 moves vertically upward along with the first trigger member 3. The first inclined surface 23 of the first mating member 22 slides upward on the second inclined surface 26 of the second mating member 25. Combined with the horizontal positive movement of the second inclined surface 26 of the second mating member 25, the first inclined surface 23 of the first mating member 22 slides obliquely upward relative to the second inclined surface 26 of the second mating member 25 via the second inclined sliding pair 28. 2 , as the transmission member 11 continues to move in the lateral positive direction, the first trigger member 3 continues to move vertically upward, the first inclined surface 23 of the first matching member 22 disengages from the second inclined surface 26 of the second matching member 25 , and the first matching member 22 moves to the lateral side of the first matching member 22 .

[0067] As shown in Figures 1 to 5 , the first mating member 22 may also be provided with a first vertical surface 24 at its transverse end. As shown in Figures 1 to 4 and 7 , the second mating member 25 may also be provided with a second vertical surface 27 at its transverse end. The first vertical surface 24 and the second vertical surface 27 may abut against and slide relative to each other, forming a vertical surface sliding pair 29 as shown in Figure 2 . This restrains the transmission member 11 from maintaining its transverse position when the brake is released, resulting in a simple and reliable structure.

[0068] As shown in Figure 2, the brake device is in the released state. The elastic force of the second elastic element 12 pushes the transmission member 11 in the opposite direction in the transverse direction, and the second vertical surface 27 of the second matching member 25 can abut the first vertical surface 24 of the first matching member 22, thereby limiting the transmission member 11 to remain in the transverse position.

[0069] As shown in FIG4 , the brake device is in a braking state, and the second vertical surface 27 of the second matching member 25 is separated from the first vertical surface 24 of the first matching member 22 , and no vertical surface sliding pair 29 is formed.

[0070] From Figure 2 to Figure 4 , the brake device changes from the released brake state to the brake state. Referring first to Figure 2 , under the action of the operator's trigger force (e.g., the aforementioned downward pedaling), the first trigger member 3 overcomes the elastic force of the first elastic element 5 and moves vertically downward. The first vertical surface 24 of the first mating member 22 abuts the second vertical surface 27 of the second mating member 25. The first vertical surface 24 slides vertically downward relative to the second vertical surface 27, and the first mating member 22 slides vertically downward relative to the second mating member 25 via the vertical surface sliding pair 29. Referring again to Figure 4 , as the first trigger member 3 continues to move vertically downward, the first vertical surface 24 of the first mating member 22 disengages from the second vertical surface 27 of the second mating member 25. The first inclined surface 23 of the first mating member 22 abuts the second inclined surface 26 of the second mating member 25, forming the second inclined surface sliding pair 28 of the first mating member 22 and the second mating member 25 as shown in Figure 4 .

[0071] From Figure 4 to Figure 2 , the brake device changes from the braking state to the released state. Referring to Figure 2 , as the transmission member 11 continues to move in the horizontal forward direction, the first trigger member 3 continues to move vertically upward, the first inclined surface 23 of the first mating member 22 disengages the second inclined surface 26 of the second mating member 25, and the first vertical surface 24 of the first mating member 22 abuts the second vertical surface 27 of the second mating member 25. The first mating member 22 and the second mating member 25 form a vertical surface sliding pair 29. The first mating member 22 continues to move vertically upward along with the first trigger member 3, and the first vertical surface 24 of the first mating member 22 slides vertically upward relative to the second mating member 25 via the vertical surface sliding pair 29.

[0072] As shown in Figures 2 and 4 , the first vertical surface 24 of the first mating component 22 can continue vertically below the first inclined surface 23, and the second vertical surface 27 of the second mating component 25 can continue vertically above the second inclined surface 26. This allows the contact between the first mating component 22 and the second mating component 25 to seamlessly transition between the vertical surface sliding pair 29 and the second inclined surface sliding pair 28 without stopping. The first mating component 22 and the second mating component 25 always maintain contact through the vertical surface sliding pair 29 or the second inclined surface sliding pair 28.

[0073] As shown in Figures 1 to 4, the second trigger member 10 can be located laterally between the first inclined sliding pair 14 and the second matching member 25. Compared with the method in which the second trigger member 10 and the second matching member 25 are respectively located on the lateral sides of the first inclined sliding pair 14, the lateral length is shorter and the space occupied is smaller.

[0074] As shown in Figures 1 to 4, the first longitudinal rod 30, the second longitudinal rod 18, the first cross rod 19, and the second cross rod 20 can be connected to each other to form a transmission member 11 with a center hole 31. The plane where the transmission member 11 is located can be perpendicular to the vertical direction, and the second trigger member 10 can be arranged in the center hole 31. The structure is compact and occupies little horizontal and vertical space.

[0075] As shown in Figure 8, a bedside table includes the aforementioned brake device and a movable base 6. The brake device is mounted on the movable base 6 to brake and release the bedside table. The movable base 6 may include a hollow tubular frame 32 and rollers 33 mounted on the tubular frame 32. The main body of the brake device may be mounted within the tubular frame 32. The vertical bottom portion of the rod portion 7 of the first trigger member 3 may pass through the bottom wall of the tubular frame 32. The brake member 4 connected thereto is located outside the bottom wall of the tubular frame 32 to provide frictional contact with the floor. The vertical top portion of the rod portion 7 of the first trigger member 3 may pass through the top wall of the tubular frame 32, protruding from the top wall of the tubular frame 32 to be triggered by the operator. The vertical top and bottom portions of the rod portion 7 of the first trigger member 3 extend through openings in the top and bottom walls of the tubular frame 32. These openings restrict the first trigger member 3 to a fixed position in both the horizontal and vertical directions, allowing it to move only in the vertical direction. The vertical bottom end of the first elastic element 5 can be supported on the inner side of the bottom wall of the tubular frame 32. When the brake is released, the flat portion 8 of the first trigger member 3 can be supported by the elastic force of the first elastic element 5 and abut against the inner side of the top wall of the tubular frame 32, restricting the first trigger member 3 to remain in the vertical position.

[0076] As shown in FIG8 , the vertical top portion of the rod portion 13 of the second trigger member 10 can pass through the top wall of the tubular frame 32, protruding from the top wall of the tubular frame 32 to be triggered by the operator. The vertical bottom portion of the rod portion 13 of the second trigger member 10 can pass through the bottom wall of the tubular frame 32. The vertical top and vertical bottom portions of the rod portion 13 of the second trigger member 10 pass through the holes in the top and bottom walls of the tubular frame 32. The holes can restrict the second trigger member 10 to be fixed in the horizontal and vertical directions, allowing the second trigger member 10 to move only in the vertical direction. The holes in the top and bottom walls of the tubular frame 32 also support the second trigger member 10. The second trigger member 10 is supported on one side by the transmission member 11 and on the other side by leaning against the holes in the top and bottom walls of the tubular frame 32.

[0077] As shown in Figure 8 , one transverse end of the second elastic element 12 can be laterally supported on the wall of the wheel arch 34 of the tubular frame 32. The wheel arch 34 can provide space for the roller 33 to move. For example, if the roller 33 is a universal wheel, the wheel arch 34 provides physical space that the roller 33 may occupy. The two longitudinal walls of the tubular frame 32 can respectively abut the two longitudinal walls of the transmission member 11, thereby restricting the transmission member 11 from being fixed in the longitudinal direction. The two longitudinal walls of the transmission member 11 can be the outer walls of the first crossbar 19 and the outer walls of the second crossbar 20, respectively. A limiting rod 35 can be disposed between the two longitudinal walls of the tubular frame 32. The limiting rod 35 is located vertically upward from the top wall of the transmission member 11 and abuts against the top wall of the transmission member 11. The limiting rod 35 restricts the transmission member 11 from vertical upward movement. The limiting rod 35 can extend longitudinally. The two limiting rods 35 can be located vertically above the first crossbar 19 and the second crossbar 20 and abut against the top walls of the first crossbar 19 and the second crossbar 20. The bottom wall of the transmission member 11 can be supported on the inner side of the bottom wall of the tubular frame 32 and can slide laterally on the bottom wall of the tubular frame 32. The bottom wall of the transmission member 11 can be composed of the bottom walls of the first crossbar 19, the second crossbar 20, the second longitudinal rod 18, and the first longitudinal rod 30.

[0078] FIG8 only illustrates the application of the brake device to a bedside table having a movable base 6 as shown in FIG8 . The brake device can also be applied to bedside tables having other types of movable bases, or to other movable equipment that requires braking and releasing the brakes, such as a wheelchair, a bed with casters, etc.

[0079] Although the present invention is disclosed above with reference to the embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention.

Claims

1. A brake device, characterized in that include: The brake assembly includes a first trigger and a brake, wherein the brake is located at the vertical bottom of the first trigger, and the first trigger is fixedly provided with a first matching member, the first trigger can move vertically downward to make the brake contact the ground to brake, and the first trigger can also move vertically upward to make the brake leave the ground to release the brake; as well as The brake release assembly includes a second mating piece, which can move laterally in the opposite direction to a position mating with the first mating piece to block the vertical upward movement of the first mating piece and keep the brake piece in contact with the ground to brake. The second mating piece can move laterally in the positive direction to release the mating with the first mating piece to allow the first mating piece to move vertically upward and make the brake piece leave the ground to release the brake.

2. The brake device according to claim 1, characterized in that: The brake assembly further includes a first elastic element, which vertically supports the first trigger member so that the first trigger member can move vertically upward and vertically downward.

3. The brake device according to claim 1, characterized in that: The brake release assembly also includes a second trigger member and a transmission member. The second matching member is fixedly arranged on the transmission member. The second trigger member and the transmission member form a first inclined sliding pair. The second trigger member can move vertically to drive the transmission member to move forward horizontally.

4. The brake device according to claim 3, characterized in that: The brake release assembly further comprises a second elastic element, which laterally supports the transmission member to drive the transmission member to move in a reverse lateral direction.

5. The brake device according to claim 3, characterized in that: The second trigger member includes a third inclined plane, which is inclined downward. The transmission member includes a fourth inclined plane, which is inclined upward. The third inclined plane and the fourth inclined plane are fitted together to form the first inclined plane sliding pair. The second trigger member moves vertically downward to drive the transmission member to move horizontally forward.

6. The brake device according to claim 1, characterized in that: The first matching piece includes a first inclined surface, the first inclined surface is inclined upward, the second matching piece includes a second inclined surface, the second inclined surface is inclined downward, and the first inclined surface and the second inclined surface are used to fit together to form a second inclined surface sliding pair; The second matching piece moves in the opposite direction laterally, and the second inclined surface abuts against the first inclined surface to lock the second inclined surface sliding pair, thereby preventing the first matching piece from moving vertically upward; The second matching piece moves forward transversely, and the second inclined surface relaxes the first inclined surface to unlock the second inclined surface sliding pair. The first inclined surface can slide relative to the second inclined surface, allowing the first matching piece to move vertically upward.

7. The brake device according to claim 6, characterized in that: The first matching member further includes a first vertical surface, which is vertically continued below the first inclined surface, and the second matching member further includes a second vertical surface, which is vertically continued above the second inclined surface, and the first vertical surface and the second vertical surface are used to fit together to form a vertical surface sliding pair; The first vertical surface can be in contact with and block the second vertical surface, the second matching piece stops laterally, and the first vertical surface can slide relative to the second vertical surface, allowing the first matching piece to move vertically.

8. The brake device according to claim 3, characterized in that: The transmission member supports the second trigger member through the first inclined sliding pair.

9. The brake device according to claim 3, characterized in that: The second triggering member is located between the first inclined sliding pair and the second matching member in the transverse direction.

10. The brake device according to claim 3, characterized in that: The transmission member includes a first longitudinal rod, a second longitudinal rod, a first cross rod and a second cross rod. The first longitudinal rod, the second longitudinal rod, the first cross rod and the second cross rod are interconnected to enclose a center hole. The first longitudinal rod provides the second matching member. The second longitudinal rod and the second trigger member form the first inclined sliding pair. The second trigger member is located in the center hole.

11. A bedside table, characterized in that include: Removable chassis; as well as The brake device according to any one of claims 1 to 10, wherein the brake device is mounted on the movable chassis.

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