CN213199356U - Fork-pulling linkage type brake structure of universal caster - Google Patents
Fork-pulling linkage type brake structure of universal caster Download PDFInfo
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- CN213199356U CN213199356U CN202021936147.9U CN202021936147U CN213199356U CN 213199356 U CN213199356 U CN 213199356U CN 202021936147 U CN202021936147 U CN 202021936147U CN 213199356 U CN213199356 U CN 213199356U
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Abstract
The utility model relates to a shifting fork linkage type brake structure of a universal caster, which comprises a universal shaft assembly, wherein the universal shaft assembly comprises a rotary shaft sleeve, a gear disc is arranged at the bottom end of the rotary shaft sleeve, a main shaft moving along the axial direction is arranged in the rotary shaft sleeve in a penetrating way, and the bottom end of the rotary shaft sleeve passes through the center of the gear disc; the shifting fork type brake assembly comprises a first longitudinal sliding piece which is connected in the block mounting frame in a sliding mode, a second longitudinal sliding piece is butted below the first longitudinal sliding piece, a third longitudinal elastic piece is butted below the second longitudinal sliding piece, the shifting fork further comprises a shifting fork, the middle of the shifting fork is rotatably connected with the block mounting frame through a fixing pin, and the shifting fork is provided with three action parts which comprise a first action part and are matched with gear teeth of a gear disc through a first transverse sliding piece; the second action part is matched with the second longitudinal sliding piece to drive the shifting fork to rotate around the fixing pin; and the third acting part is matched with the rotating fluted disc on the wheel shaft through the second transverse sliding piece. The braking of the wheels and the main shaft can be completed by the axial movement of the main shaft, the structure is simple, the transmission efficiency is high, and the operation is convenient.
Description
Technical Field
The utility model belongs to the technical field of the truckle brake technique and specifically relates to a universal caster's pull out fork coordinated type brake structure.
Background
In the prior art, the universal caster usually adopts pedal brake structure to usually adopt "three shaft type" transmission structure, or gear drive structure to accomplish the transmission, the problem that exists is: in the "three-axis type" transmission structure, the shrapnel structure that is used for carrying out the brake to universal axis of rotation, the cooperation structure between its head and the universal axis of rotation tip is: brake shell fragment head is the lamellar structure, and it wears to establish in the axle head of universal axis of rotation, and after brake pedal stepped on, shell fragment jack-up universal axis of rotation to prevent its rotation, the problem that above-mentioned brake structure exists is: the elastic sheet moves up and down in the hole of the shaft end to easily generate a slipping phenomenon, and when the brake is performed, the elastic sheet is jacked up and then is matched with the shaft end to form 'line' contact, so that the contact area is small, the brake pad and the shaft end are easily abraded after long-term use, and the brake is failed seriously; in the gear transmission structure, although gear transmission is adopted between the pedals, the transmission efficiency can be improved, the brake wear is reduced, but two pedal structures still need to be arranged, and the operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art, and provides a shifting fork linkage type brake structure of a universal caster wheel with a reasonable structure.
The utility model discloses the technical scheme who adopts as follows:
a shifting fork linkage type brake structure of a universal caster comprises a left frame and a right frame, wherein the left frame and the right frame are buckled into a shell, a universal shaft assembly is mounted at the upper part of the shell, and a shifting fork type brake assembly matched with the universal shaft assembly is mounted in the shell through a block mounting frame; the universal shaft assembly structurally comprises a rotary shaft sleeve, a gear disc is mounted at the bottom end of the rotary shaft sleeve, a main shaft moving along the axial direction penetrates through the rotary shaft sleeve, and the bottom end of the main shaft penetrates through the center of the gear disc; the structure of the shifting fork type brake assembly comprises a first longitudinal sliding piece which is connected in the block mounting frame in a sliding mode, a second longitudinal sliding piece is butted below the first longitudinal sliding piece, and a third longitudinal elastic piece is butted below the second longitudinal sliding piece; still including pulling out the fork, pull out the fork middle part through the fixed pin with the chunk mounting bracket rotates to be connected, pulls out the fork and has three effect portion, include: the first action part is connected with one end of the first transverse sliding piece, and the other end of the first transverse sliding piece is matched with the gear teeth of the gear disc to lock or unlock the gear disc; the second action part is matched with the second longitudinal sliding piece and drives the shifting fork to rotate around the fixing pin; and the third acting part is matched with the second transverse sliding part, and the second transverse sliding part is matched with the rotating fluted disc on the wheel shaft to lock or release the rotating fluted disc.
As a further improvement of the above technical solution:
the structure of the first longitudinal sliding piece comprises a first sliding shell with an opening at the bottom, and a first longitudinal elastic piece connected in the first sliding shell, wherein the top surface of the first sliding shell is butted below the gear plate; the structure of the second longitudinal sliding piece comprises a second sliding shell with an opening on the side surface and a second longitudinal elastic piece connected in the second sliding shell; the top end of the first longitudinal elastic piece is connected with the top surface of the first sliding shell, and the bottom end of the first longitudinal elastic piece is connected with the top surface of the second longitudinal sliding piece; the top end of the second longitudinal elastic piece is connected with the top surface of the second sliding shell, and the bottom end of the second longitudinal elastic piece is matched with the second action part; the bottom end of the third longitudinal elastic piece is connected with the block mounting frame, and the top end of the third longitudinal elastic piece is connected with the bottom surface of the second sliding shell.
The second transverse sliding piece is of a symmetrical structure, a through hole used for containing the third longitudinal elastic piece is formed in the middle of the second transverse sliding piece, a clamping hole matched with the third acting part is formed in one side of the through hole, and clamping sections extend outwards from two ends of the second transverse sliding piece respectively.
The third acting part matched with the clamping hole is in a barb-shaped structure.
The frame at the left end and the right end is buckled into a shell body, the wheel shaft penetrates through the shell body, and two ends of the wheel shaft are respectively connected with a wheel body through the rotating fluted disc; the clamping sections on two sides of the first transverse sliding piece are respectively matched with the rotating fluted disc at two ends, and the thickness of each clamping section is smaller than the distance between two adjacent gear teeth on the rotating fluted disc.
The outer end of the wheel body is provided with a mounting end plate.
The second acting part is of a long rod-shaped structure, and the long rod-shaped structure extends into the second sliding shell from the side opening of the second sliding shell and is matched with the second longitudinal elastic piece.
The circumference side equipartition of gear disc has bellied teeth of a cogwheel, first transverse sliding piece is followed the gear disc radial direction sets up, and first transverse sliding piece's thickness is less than adjacent two the interval between the teeth of a cogwheel.
The rotary shaft sleeve is arranged in a shaft sleeve shell which is connected with the shell-shaped body into a whole, a cam is further arranged in the shaft sleeve shell, two bulges are arranged at the bottom of the cam, an inner concave part is formed between the two bulges, an outer convex part is arranged at the top end of the part of the main shaft extending out of the rotary shaft sleeve, and the outer convex part is accommodated in the inner concave part when the universal wheel is in a normal running state.
The utility model has the advantages as follows:
the utility model has the advantages of being compact and reasonable in structure, convenient operation, the utility model discloses first longitudinal sliding piece, second longitudinal sliding piece and the linkage of third longitudinal elastic component utilize the rotation characteristics of pulling out the fork, brake universal rotation and the rotation of wheel body through first transverse sliding piece, the horizontal sliding piece of second respectively, the utility model discloses simple structure, transmission efficiency height have improved the stability of brake structure.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic structural view of the wheel body shown in fig. 1 with one end of the mounting end plate and the wheel body removed.
FIG. 3 is a schematic view of the rotatable toothed disc shown in FIG. 2 with the rotatable toothed disc removed.
Fig. 4 is a structural view of the second sliding housing of the second longitudinal sliding member shown in fig. 3 with the second sliding housing removed.
Fig. 5 is a cross-sectional view of the present invention.
Fig. 6 is a schematic structural view of the fork of the present invention matching with the second lateral sliding member.
Wherein: 1. a shaft housing; 2. a wheel body; 3. mounting an end plate; 4. a frame; 5. a gear plate; 6. a first longitudinal slide; 7. a second longitudinal slide; 8. a second lateral slide; 81. a via hole; 82. a clamping hole; 83. a clamping section; 9. a third longitudinal elastic member; 10. rotating the fluted disc; 11. shifting a fork; 12. a first lateral slide; 13. a main shaft; 14. a second longitudinal elastic member; 15. rotating the shaft sleeve; 16. a block mounting frame; 17. a first longitudinal elastic member; 18. a fixing pin; 19. a wheel shaft; 20. a cam; 201. a protrusion; 111. a first acting part; 112. a second acting part; 113. a third acting part; 131. an outer convex portion.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-5, the shifting fork linkage type brake structure of the universal caster of the present embodiment includes a left and a right frame 4, the left and the right frames 4 are fastened into a shell, a universal shaft assembly is installed on the upper portion of the shell, and a shifting fork type brake assembly matched with the universal shaft assembly is installed in the shell through a block installation frame 16;
as shown in fig. 5, the structure of the universal shaft assembly includes a rotary shaft sleeve 15, a gear disc 5 is mounted at the bottom end of the rotary shaft sleeve 15, a main shaft 13 moving along the axial direction penetrates through the rotary shaft sleeve 15, and the bottom end of the main shaft 13 penetrates through the center of the gear disc 5;
as shown in FIG. 2, the construction of the fork brake assembly includes a first longitudinal slide 6 slidably connected within a block mounting bracket 16, under which a second longitudinal slide 7 abuts, under which the second longitudinal slide 7 abuts a third longitudinal spring 9; still include the fork 11, as shown in fig. 4, the middle part of the fork 11 is connected with the rotation of chunk mounting bracket 16 through the fixed pin 18, and the fork 11 has three effect portions, includes:
a first acting portion 111 connected to one end of the first transverse sliding member 12, and the other end of the first transverse sliding member 12 is engaged with the gear teeth of the gear plate 5 to lock or unlock the same;
a second action part 112, which is matched with the second longitudinal sliding piece 7 and drives the shifting fork 11 to rotate around the fixed pin 18;
the third acting portion 113 is engaged with the second lateral sliding member 8, and the second lateral sliding member 8 is engaged with the rotary toothed disc 10 of the wheel axle 19 to lock or unlock the same.
As shown in fig. 2 and 3, the first longitudinal sliding member 6 has a structure including a first sliding housing with an open bottom, a first longitudinal elastic member 17 connected inside the first sliding housing, and a top surface of the first sliding housing is abutted under the gear plate 5; the second longitudinal sliding member 7 has a structure comprising a second sliding housing with an opening at the side, a second longitudinal elastic member 14 connected in the second sliding housing; the top end of the first longitudinal elastic element 17 is connected with the top surface of the first sliding shell, and the bottom end is connected with the top surface of the second longitudinal sliding element 7; the top end of the second longitudinal elastic element 14 is connected with the top surface of the second sliding shell, and the bottom end is matched with the second acting part 112; the bottom end of the third longitudinal elastic element 9 is connected to the block mounting frame 16 and the top end is connected to the bottom surface of the second sliding housing.
As shown in fig. 6, the second transverse sliding member 8 is of a symmetrical structure, a through hole 81 for accommodating the third longitudinal elastic member 9 is formed in the middle of the second transverse sliding member, a locking hole 82 matched with the third acting portion 113 is formed in one side of the through hole 81, and locking sections 83 extend outwards from two ends of the second transverse sliding member 8.
The third acting portion 113 engaged with the catching hole 82 has a barb-like structure.
As shown in fig. 1 and 3, the frame 4 at the left and right ends is fastened into a shell, the wheel axle 19 is inserted into the shell, and two ends of the wheel axle 19 are respectively connected to a wheel body 2 through the rotary fluted disc 10;
the clamping sections 83 on both sides of the first transverse sliding member 12 are respectively matched with the rotating fluted disc 10 on both ends, and the thickness of the clamping section 83 is smaller than the distance between two adjacent teeth on the rotating fluted disc 10.
The outer end of the wheel body 2 is provided with a mounting end plate 3.
As shown in fig. 6, the second acting portion 112 has a long rod-like structure extending from the side opening of the second slide case into the interior thereof to cooperate with the second longitudinal elastic member 14.
The circumference side equipartition of toothed disc 5 has bellied teeth of a cogwheel, and first transverse sliding member 12 sets up along toothed disc 5 radial direction, and the thickness of first transverse sliding member 12 is less than the interval between two adjacent teeth of a cogwheel.
As shown in fig. 5, the rotary shaft sleeve 15 is installed in the shaft sleeve housing 1 integrally connected with the shell-shaped body, the cam 20 is further installed in the shaft sleeve housing 1, two protrusions 201 are formed at the bottom of the cam, an inner concave portion 201 is formed between the two protrusions, an outer convex portion 131 is arranged at the top end of the portion, extending out of the rotary shaft sleeve 15, of the main shaft 13, and the outer convex portion 131 is accommodated in the inner concave portion 201 when the universal wheel is in a normal operation state.
The utility model discloses an universal shaft subassembly brakes with the rotation of shifting out fork brake subassembly cooperation to the wheel body rotation and universal shaft subassembly simultaneously and accomplishes the brake.
The utility model discloses a working process:
when the universal wheel normally runs, the rotating shaft sleeve 15 and the main shaft 13 rotate synchronously. During braking, as shown in fig. 4-6, the cam 20 rotates, the protrusion 201 at the bottom thereof acts on the outward protrusion 131 to move the spindle 13 downward, the first sliding housing is pressed downward to slide downward, the first longitudinal elastic member 17 is compressed, the second sliding housing is driven to slide downward, the second longitudinal elastic member 14 and the third longitudinal elastic member 9 are compressed, the second acting portion 112 of the shift fork 11 is acted on by the elastic force of the second longitudinal elastic member 14 to rotate counterclockwise around the fixing pin 18, the first acting portion 111 drives the first transverse sliding member 12 to slide laterally leftward and extend into the gap between two adjacent gear teeth on the gear disc 5, so as to prevent the gear disc 5 from rotating to brake the rotating sleeve 15, and at the same time, the third acting portion 113 of the shift fork 11 drives the second transverse sliding member 8 to slide rightward through the engaging hole 82, so that the engaging segments 83 at both ends move rightward and are respectively engaged with the gear teeth 10 at both ends of the wheel axle 19, braking it, and stopping the rotation of the wheel body 2. When unlocking, the main shaft 13 moves upwards to release the compression of the first sliding shell, the third longitudinal elastic piece 9 resets, and the whole brake mechanism resets to complete unlocking.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (9)
1. The utility model provides a universal caster's fork coordinated type brake structure that pulls out, includes frame (4) of left and right ends, frame (4) lock into the shell-like body of left and right ends, its characterized in that: a universal shaft assembly is mounted at the upper part of the shell-shaped body, and a shifting fork type brake assembly matched with the universal shaft assembly is mounted in the shell-shaped body through a block mounting frame (16);
the universal shaft assembly structurally comprises a rotary shaft sleeve (15), a gear disc (5) is installed at the bottom end of the rotary shaft sleeve (15), a main shaft (13) moving along the axial direction penetrates through the rotary shaft sleeve (15), and the bottom end of the main shaft (13) penetrates through the center of the gear disc (5);
the structure of the shifting fork type brake assembly comprises a first longitudinal sliding piece (6) which is connected in the block mounting frame (16) in a sliding way, a second longitudinal sliding piece (7) is butted below the first longitudinal sliding piece, and a third longitudinal elastic piece (9) is butted below the second longitudinal sliding piece (7); still including shifting fork (11), shift fork (11) middle part through fixed pin (18) with chunk mounting bracket (16) rotate to be connected, shift fork (11) have three effect portion, include:
the first acting part (111) is connected with one end of a first transverse sliding piece (12), and the other end of the first transverse sliding piece (12) is matched with the gear teeth of the gear disc (5) to lock or unlock the gear disc;
a second action part (112) which is matched with the second longitudinal sliding piece (7) and drives the shifting fork (11) to rotate around the fixed pin (18);
and the third acting part (113) is matched with the second transverse sliding piece (8), and the second transverse sliding piece (8) is matched with the rotating fluted disc (10) on the wheel shaft (19) to lock or release the second transverse sliding piece.
2. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 1, wherein: the structure of the first longitudinal sliding piece (6) comprises a first sliding shell with an opening at the bottom, a first longitudinal elastic piece (17) connected in the first sliding shell, and the top surface of the first sliding shell is butted below the gear disc (5); the structure of the second longitudinal sliding piece (7) comprises a second sliding shell with an opening on the side surface, and a second longitudinal elastic piece (14) connected in the second sliding shell;
the top end of the first longitudinal elastic piece (17) is connected with the top surface of the first sliding shell, and the bottom end of the first longitudinal elastic piece is connected with the top surface of the second longitudinal sliding piece (7); the top end of the second longitudinal elastic piece (14) is connected with the top surface of the second sliding shell, and the bottom end of the second longitudinal elastic piece is matched with the second acting part (112); the bottom end of the third longitudinal elastic piece (9) is connected with the block mounting frame (16), and the top end of the third longitudinal elastic piece is connected with the bottom surface of the second sliding shell.
3. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 1, wherein: the second transverse sliding piece (8) is of a symmetrical structure, a through hole (81) used for containing the third longitudinal elastic piece (9) is formed in the middle of the second transverse sliding piece, a clamping hole (82) matched with the third acting part (113) is formed in one side of the through hole (81), and clamping sections (83) extend outwards from two ends of the second transverse sliding piece (8) respectively.
4. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 3, wherein: the third acting part (113) matched with the clamping hole (82) is in a barb-shaped structure.
5. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 3, wherein: the wheel shaft (19) penetrates through the shell, and two ends of the wheel shaft (19) are respectively connected with a wheel body (2) through the rotating fluted disc (10);
clamping sections (83) on two sides of the first transverse sliding piece (12) are respectively matched with the rotating fluted disc (10) at two ends, and the thickness of each clamping section (83) is smaller than the distance between two adjacent gear teeth on the rotating fluted disc (10).
6. The fork linkage type brake structure of the universal caster as claimed in claim 5, wherein: the outer end of the wheel body (2) is provided with a mounting end plate (3).
7. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 2, wherein: the second acting part (112) is a long rod-shaped structure, and the long rod-shaped structure extends into the second sliding shell from the side opening of the second sliding shell and is matched with the second longitudinal elastic piece (14).
8. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 1, wherein: the circumference side equipartition of toothed disc (5) has bellied teeth of a cogwheel, first horizontal slider (12) are followed toothed disc (5) radial direction sets up, and the thickness of first horizontal slider (12) is less than adjacent two interval between the teeth of a cogwheel.
9. The fork-pulling linkage type brake structure of the universal caster as claimed in claim 1, wherein: the universal wheel is characterized in that the rotary shaft sleeve (15) is installed in a shaft sleeve housing (1) connected with the shell-shaped body into a whole, a cam (20) is further installed in the shaft sleeve housing (1), two protrusions (201) are arranged at the bottom of the cam, an inner concave part is formed between the two protrusions, an outer convex part (131) is arranged at the top end of the part, extending out of the rotary shaft sleeve (15), of the main shaft (13), and the outer convex part (131) is contained in the inner concave part when the universal wheel is in a normal running state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021936147.9U CN213199356U (en) | 2020-09-07 | 2020-09-07 | Fork-pulling linkage type brake structure of universal caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021936147.9U CN213199356U (en) | 2020-09-07 | 2020-09-07 | Fork-pulling linkage type brake structure of universal caster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213199356U true CN213199356U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021936147.9U Active CN213199356U (en) | 2020-09-07 | 2020-09-07 | Fork-pulling linkage type brake structure of universal caster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213199356U (en) |
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2020
- 2020-09-07 CN CN202021936147.9U patent/CN213199356U/en active Active
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Address after: 214000 Yanyu Road, Qianzhou supporting area, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee after: Wuxi Zhongguan Medical Equipment Co.,Ltd. Address before: 214000 Yanyu Road, Qianzhou supporting area, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: WUXI ZHONGGUAN LOGISTICS EQUIPMENT Co.,Ltd. |