A brake caster

Abstract

The utility model discloses a brake type caster, comprising a caster support frame, a connecting seat is provided at the top of the caster support frame, a wheel axle is rotatably provided at the bottom of the caster support frame, a brake disc coaxial with the wheel axle is provided on one side of the annular brake pad, a connecting rod group that can press the brake disc against the annular brake pad is provided between the drive ring and the brake disc, and a pedal that can rotate the drive ring is provided on the caster support frame. The utility model can fix the wheel by two methods: a first brake group and a first brake group are tightly clamped and a brake pad and a brake disc are tightly clamped. The above two braking methods replace the method of clamping the brake pad and the wheel surface, which can prevent the wheel from being unable to be fixed by the brake mechanism due to insufficient friction, and the two brake groups can provide greater friction for the wheel, so that the wheel is fixed more stably.

Description

Technical Field

[0001] The utility model relates to the field of casters, in particular to a brake caster. Background Art

[0002] A caster generally includes a connection base connected to the bottom of the furniture or equipment, a support frame rotatably connected to the bottom of the connection base via a first rotating shaft arranged in the vertical direction, and a roller rotatably connected to the support frame via a second rotating shaft arranged in the horizontal direction. The caster generally has a brake mechanism. When the furniture or equipment is moved to a certain specified position, the brake mechanism is activated to fix the roller so that it cannot roll. In the prior art, casters with brakes generally adopt a brake pad structure and achieve braking through multiple rotating shafts. However, the brake mechanism of this structure has certain disadvantages, namely, the number of rotating shafts is large and the structure is complex.

[0003] For example, the Chinese patent application number is 201410227971X, and the patent name is a caster with brake, which "includes a connecting seat, a support frame rotatably connected to the connecting seat below through a first rotating shaft arranged in the vertical direction, a roller rotatably connected to the support frame through a second rotating shaft arranged in the horizontal direction, and a brake mechanism for limiting the movement of the roller is arranged on the support frame, and the brake mechanism includes a brake pad rotatably connected to the support frame and having elasticity, and a pedal rotatably connected to the support frame and connected to the brake pad. The brake mechanism has a release state and a brake state. When the brake mechanism When the brake mechanism is in a released state, the brake pad is disengaged from the roller, and when the brake mechanism is in a braking state, the brake pad is against the roller, and a first limiting mechanism is provided between the brake pad and the pedal for limiting the downward rotation of the pedal relative to the brake pad when the brake mechanism is in a braking state. In the above technology, the friction between the brake pad and the wheel is used to fix the wheel so that it cannot rotate, but the wheel will wear out, and the wheel surface will be covered with dust when rolling on the ground. Whether the wheel is worn out or covered with dust, the friction between the wheel and the brake pad will be reduced, so that the wheel is difficult to be fixed and cannot rotate. Utility Model Content

[0004] The purpose of the utility model is to provide a brake type caster.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A brake caster according to claim 1, wherein the caster support frame has a connecting seat at the top of the caster support frame, a wheel axle is rotatably provided at the bottom of the caster support frame, a wheel is provided on the wheel axle, conical brake blocks are provided at both ends of the wheel axle, a driving ring coaxial with the wheel axle is rotatably provided on the inner wall of the caster support frame, a first brake group capable of holding the conical brake block is provided on the inner wall of the driving ring, annular brake pads are inlaid on both sides of the wheel, a brake disc coaxial with the wheel axle is provided on one side of the annular brake pad, a connecting rod group capable of pressing the brake disc against the annular brake pad is provided between the driving ring and the brake disc, and a pedal capable of rotating the driving ring is provided on the caster support frame. The utility model can fix the wheel by holding the first brake group and the first brake group tightly and holding the brake pad and the brake disc tightly. The above two braking methods replace the method of holding the brake pad and the wheel surface tightly, which can prevent the wheel from being fixed by the brake mechanism due to insufficient friction, and the two brake groups can provide greater friction for the wheel, so that the wheel is fixed more stably.

[0007] As a preferred solution of the utility model, the driving ring includes annular grooves arranged on both sides of the inner wall of the caster support frame and coaxial with the wheel axle, a circular ring is rotatably provided on the annular groove, the first brake group is arranged on the inner wall of the circular ring, an arc groove is provided on the side of the circular ring close to the annular brake pad, and the connecting rod group is connected to the arc groove.

[0008] As a further solution of the utility model, the first brake group includes rectangular guide grooves arranged in sequence on both sides of the inner wall of the caster support frame along the circumference of the wheel axle, an arc-shaped brake block that can hold the conical brake block is provided on the rectangular guide groove, and a plurality of arc-shaped extrusion blocks that can squeeze the arc-shaped brake block are arranged in sequence along the circumference on the inner wall of the circular ring, a first arc-shaped guide groove is provided on the arc-shaped brake block, and a first arc-shaped guide block that can cooperate with the first arc-shaped guide groove is provided on the arc-shaped extrusion block.

[0009] As a further solution of the utility model, the connecting rod group includes connecting rods arranged in sequence along the circumference on the side of the brake disc close to the circular ring, a round ball that can cooperate with the arc groove is fixed at one end of the connecting rod, a second arc guide groove is provided on the arc groove, and a second arc guide block that cooperates with the second arc guide groove is provided on the ball.

[0010] As a further solution of the utility model, a plurality of guide cylinders are provided on the side of the brake disc close to the inner wall of the caster support frame, and guide rods capable of cooperating with the guide cylinders are provided on the inner wall of the caster support frame.

[0011] As a further solution of the utility model, annular embedding grooves are respectively provided on both sides of the wheel, and the annular brake pads are embedded in the annular embedding grooves.

[0012] As a preferred solution of the utility model, the pedal includes through grooves symmetrically arranged on the caster support frame, fixing rods extending out of the through grooves are fixed on the circular ring, and a pressure plate is provided between the fixing rods.

[0013] As a preferred solution of the utility model, a fixed shaft is provided on the top of the caster support frame, a mounting groove is provided on the top of the fixed shaft, a bearing is embedded in the mounting groove, and the connecting seat is rotatably arranged on the bearing.

[0014] To sum up, the utility model has the following beneficial effects compared with the prior art: the utility model can fix the wheel by two methods: the first brake group is clamped tightly against the first brake group and the brake pad is clamped tightly against the brake disc. The above two braking methods replace the method of clamping the brake pad against the wheel surface, which can prevent the wheel from being unable to be fixed by the brake mechanism due to insufficient friction, and the two brake groups can provide greater friction for the wheel, making the wheel fixed more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional view of the utility model.

[0016] Figure 2 This is an exploded view of the utility model.

[0017] Figure 3 It is a cross-sectional view of the utility model.

[0018] Figure 4 This is a structural view of the first brake group in the utility model.

[0019] Figure 5 This is a structural view of the caster support frame of the utility model.

[0020] Figure 6 For this utility model Figure 3 Magnified view at A in the middle.

[0021] Figure 7 For this utility model Figure 3 Magnified view at B.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. caster support frame; 2. connecting seat; 3. axle; 4. wheel; 5. conical brake block; 20. drive ring; 40. first brake group; 6. annular brake pad; 7. brake disc; 60. connecting rod group: 80. pedal: 21. annular groove; 22. circular ring; 23. arc groove; 41. rectangular guide groove; 42. arc brake block; 43. arc extrusion block; 44. first arc guide groove; 45. first arc guide block; 61. connecting rod; 62. sphere: 63. second arc guide groove: 64. second arc guide block; 11. guide cylinder; 12. guide rod; 91. annular inlay groove: 81. through groove: 82. fixing rod; 83. pressure plate; 92. fixing shaft: 93. mounting groove: 94. bearing. DETAILED DESCRIPTION

[0023] The following specific implementation content provides a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0024] In addition, space-related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatial relative words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotations or other orientations, and the space-related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 7A brake caster shown in the figure includes a caster support frame 1, a connecting seat 2 is provided on the top of the caster support frame 1, a wheel axle 3 is rotatably provided at the bottom of the caster support frame 1, a wheel 4 is provided on the wheel axle 3, conical brake blocks 5 are provided on both ends of the wheel axle 3, a driving ring 20 coaxial with the wheel axle 3 is rotatably provided on the inner wall of the caster support frame 1, a first brake group 40 capable of holding the conical brake block 5 is provided on the inner wall of the driving ring 20, annular brake pads 6 are inlaid on both sides of the wheel 4, a brake disc 7 coaxial with the wheel axle 3 is provided on one side of the annular brake pad 6, a connecting rod group 60 capable of pressing the brake disc 7 against the annular brake pad 6 is provided between the driving ring 20 and the brake disc 7, and a pedal 80 capable of rotating the driving ring 20 is provided on the caster support frame 1.

[0026] A further embodiment of the drive ring 20 in the present invention: the drive ring 20 includes an annular groove 21 arranged on both sides of the inner wall of the caster support frame 1 and coaxial with the wheel axle 3, a circular ring 22 is rotatably provided on the annular groove 21, the first brake group 40 is arranged on the inner wall of the circular ring 22, an arc groove 23 is provided on the side of the circular ring 22 close to the annular brake pad 6, and the connecting rod group 60 is connected to the arc groove 23.

[0027] A further embodiment of the first brake group 40 in the utility model: the first brake group 40 includes a rectangular guide groove 41 which is sequentially arranged on both sides of the inner wall of the caster support frame 1 along the circumference of the wheel axle 3, an arc-shaped brake block 42 which can hold the conical brake block 5 is provided on the rectangular guide groove 41, and a plurality of arc-shaped extrusion blocks 43 which can squeeze the arc-shaped brake block 42 are sequentially arranged along the circumference on the inner wall of the circular ring 22, a first arc-shaped guide groove 44 is provided on the arc-shaped brake block 42, and a first arc-shaped guide block 45 which can cooperate with the first arc-shaped guide groove 44 is provided on the arc-shaped extrusion block 43; when the driving ring 20 is driven to rotate, the arc-shaped extrusion block 43 will squeeze the arc-shaped brake block 42, so that the arc-shaped brake block 42 moves along the rectangular guide groove 41, and holds the conical brake block 5 and the wheel axle 3 to fix the wheel.

[0028] A further embodiment of the connecting rod group 60 in the utility model: the connecting rod group 60 includes connecting rods 61 arranged in sequence along the circumference on the side of the brake disc 7 close to the ring 22, a ball 62 that can cooperate with the arc groove 23 is fixed at one end of the connecting rod 61, a second arc guide groove 63 is provided on the arc groove 23, and a second arc guide block 64 that cooperates with the second arc guide groove 63 is provided on the ball 62. When the driving ring 20 rotates, the annular groove 21 on the driving ring 20 will squeeze the ball 62 to make the ball 62 move along the second arc guide groove 63, and at this time the brake disc 7 will also move and hold the annular brake pad 6 tightly together, thereby further fixing the wheel.

[0029] A further embodiment of the brake disc 7 in the present invention is as follows: a plurality of guide cylinders 11 are provided on the brake disc 7 close to the inner wall of the caster support frame 1 , and a guide rod 12 capable of cooperating with the guide cylinder 11 is provided on the inner wall of the caster support frame 1 .

[0030] A further embodiment of the wheel 4 in the present invention is as follows: annular embedding grooves 91 are respectively provided on both sides of the wheel 4 , and the annular brake pad 6 is embedded in the annular embedding grooves 91 .

[0031] A further embodiment of the pedal 80 in the utility model: the pedal 80 includes a through slot 81 symmetrically arranged on the caster support frame 1, a fixing rod 82 extending out of the through slot 81 is fixed on the circular ring 22, and a pressure plate 83 is provided between the fixing rods 82. When the user needs to fix the wheel so that the brake mechanism holds the wheel, he only needs to step on the pressure plate 83 to make the fixing rod 82 drive the driving ring 20 to rotate, and the conical brake block 5 and the first brake group 40 and the annular brake pad 6 and the brake disc 7 will hold each other tightly so that the wheel cannot rotate.

[0032] A further embodiment of the caster support frame 1 in the utility model: a fixed shaft 92 is provided at the top of the caster support frame 1, a mounting groove 93 is provided at the top of the fixed shaft 92, a bearing 94 is embedded in the mounting groove 93, the connecting seat 2 is rotatably set on the bearing 94, the bearing 94 is the existing technology, the bearing 94 can make the connecting seat 2 rotate more smoothly, and the connecting seat 2 is connected to the electrical equipment.

[0033] During use: when the user needs to fix the wheel so that the brake mechanism holds the wheel, he only needs to step on the pressure plate 83 to make the fixing rod 82 drive the driving ring 20 to rotate, and the conical brake block 5 and the first brake group 40 and the annular brake pad 6 and the brake disc 7 will hold each other tightly so that the wheel cannot rotate. When the driving ring 20 is driven to rotate, the arc-shaped extrusion block 43 will squeeze the arc-shaped brake block 42, so that the arc-shaped brake block 42 moves along the rectangular guide groove 41, and hold the conical brake block 5 and the axle 3 to fix the wheel. The annular groove 21 on the driving ring 20 will squeeze the ball 62 so that the ball 62 moves along the second arc-shaped guide groove 63, and at this time the brake disc 7 will also move and hold together with the annular brake pad 6, thereby further fixing the wheel. The bearing 94 is a prior art. The bearing 94 can make the connecting seat 2 rotate more smoothly, and the connecting seat 2 is connected to the electrical equipment.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A brake caster, comprising a caster support frame (1), a connecting seat (2) is provided at the top of the caster support frame (1), a wheel axle (3) is rotatably provided at the bottom of the caster support frame (1), and a wheel (4) is provided on the wheel axle (3), characterized in that: Conical brake blocks (5) are provided at both ends of the wheel axle (3); a driving ring (20) coaxial with the wheel axle (3) is rotatably provided on the inner wall of the caster support frame (1); a first brake group (40) capable of holding the conical brake block (5) is provided on the inner wall of the driving ring (20); annular brake pads (6) are inlaid on both sides of the wheel (4); a brake disc (7) coaxial with the wheel axle (3) is provided on one side of the annular brake pad (6); a connecting rod group (60) capable of pressing the brake disc (7) against the annular brake pad (6) is provided between the driving ring (20) and the brake disc (7); and a pedal (80) capable of rotating the driving ring (20) is provided on the caster support frame (1).

2. A brake caster according to claim 1, characterized in that: The driving ring (20) comprises an annular groove (21) which is arranged on both sides of the inner wall of the caster support frame (1) and is coaxial with the wheel axle (3); a circular ring (22) is rotatably arranged on the annular groove (21); the first brake group (40) is arranged on the inner wall of the circular ring (22); an arc groove (23) is arranged on one side of the circular ring (22) close to the annular brake pad (6); and the connecting rod group (60) is connected to the arc groove (23).

3. A brake caster according to claim 2, characterized in that: The first brake group (40) comprises a rectangular guide groove (41) arranged in sequence on both sides of the inner wall of the caster support frame (1) along the circumference of the wheel axle (3); an arc-shaped brake block (42) capable of holding the conical brake block (5) is arranged on the rectangular guide groove (41); a plurality of arc-shaped extrusion blocks (43) capable of extruding the arc-shaped brake block (42) are arranged in sequence along the circumference on the inner wall of the ring (22); a first arc-shaped guide groove (44) is arranged on the arc-shaped brake block (42); and a first arc-shaped guide block (45) capable of cooperating with the first arc-shaped guide groove (44) is arranged on the arc-shaped extrusion block (43).

4. A brake caster according to claim 2, characterized in that: The connecting rod assembly (60) includes connecting rods (61) arranged in sequence along the circumference on one side of the brake disc (7) close to the ring (22); a round ball (62) that can cooperate with the arc groove (23) is fixed to one end of the connecting rod (61); a second arc guide groove (63) is provided on the arc groove (23); and a second arc guide block (64) that cooperates with the second arc guide groove (63) is provided on the round ball (62).

5. The brake caster according to claim 1, characterized in that: A plurality of guide cylinders (11) are provided on the side of the brake disc (7) close to the inner wall of the caster support frame (1), and a guide rod (12) capable of cooperating with the guide cylinders (11) is provided on the inner wall of the caster support frame (1).

6. The brake caster according to claim 1, characterized in that: Annular embedding grooves (91) are respectively provided on both sides of the wheel (4), and the annular brake pad (6) is embedded in the annular embedding grooves (91).

7. The brake caster according to claim 2, characterized in that: The pedal (80) comprises a through slot (81) symmetrically arranged on the caster support frame (1), a fixing rod (82) extending out of the through slot (81) is fixed on the ring (22), and a pressing plate (83) is arranged between the fixing rods (82).

8. The brake caster according to claim 1, characterized in that: A fixed shaft (92) is provided at the top of the caster support frame (1), a mounting groove (93) is provided at the top of the fixed shaft (92), a bearing (94) is embedded in the mounting groove (93), and the connecting seat (2) is rotatably arranged on the bearing (94).

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