Mechanical transmission unit structure for simultaneously driving two pistons to brake and clamp

Abstract

The utility model discloses a mechanical transmission unit structure capable of simultaneously driving two pistons for braking and clamping. Comprising a differential mechanism and two piston transmission mechanisms, the two ends of the differential mechanism are each connected with one piston transmission mechanism, the two piston transmission mechanisms are symmetrically arranged at the two ends of the differential mechanism, and the differential mechanism is connected with an external motor; each piston transmission mechanism comprises a lead screw piston, a lead screw gear, a worm and a bearing, one end of the worm is connected with the bearing and supported and installed through the bearing, the other end of the worm is coaxially connected with a differential mechanism, the worm is meshed with the lead screw gear, the lead screw gear is coaxially connected with one end of the lead screw piston, and the two ends of the differential mechanism are symmetrical in structure, so that transmission of the lead screw pistons on the two sides is consistent. Original oil pressure braking can be replaced in a braking system, pipeline arrangement of the braking system is removed, the two pistons are driven at the same time, the response speed is higher, and the braking performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of simultaneously drive two pistons for brake clamping mechanical transmission unit structure, which can be applied in brake and other fields. BACKGROUND

[0002] Traditional brake clamping system needs brake fluid as brake force transmission medium, and this mechanical clamping transmission structure does not need brake fluid, has the advantages of simple structure, short response time, etc. Meanwhile, the utility model relates to the function of simultaneously driving two pistons, which can be applied in mechanical structures such as double-cylinder caliper or four-cylinder, six-cylinder fixed caliper. UTILITY MODEL CONTENTS

[0003] In view of the problems of existing oil pressure brake clamping system, including brake pipeline, complex structure, requiring intermediate medium, long response line, complex assembly process, heavy weight, etc., the utility model provides a kind of simultaneously drive two pistons for brake clamping mechanical transmission unit structure, which can remove complex and long brake pipeline structure, achieve faster response speed and higher clamping brake performance.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model includes differential and two groups of piston transmission mechanism, one group of piston transmission mechanism is connected to the both ends of differential, two groups of piston transmission mechanism are symmetrically arranged at the both ends of differential, and differential is connected with external motor;Each group of piston transmission mechanism includes screw rod piston, screw rod gear, worm and bearing, one end of worm is connected with bearing and supported and installed through bearing, the other end is coaxially connected with differential, worm and screw rod gear are meshed and connected, and screw rod gear and one end of screw rod piston are coaxially connected.

[0006] The differential is synchronously rotatably sleeved on the shaft of worm, and the worm is sleeved in the bearing.

[0007] The bearing is a deep groove ball bearing, one end of the worm is sleeved with a deep groove ball bearing, and the worm is positioned on the external housing through the deep groove ball bearing.

[0008] The screw rod gear acts as worm of worm and gear pair, and the screw rod gear and worm are meshed to form worm and gear pair.

[0009] The screw rod piston includes screw rod nut sliding pair and piston, one end of the screw rod nut sliding pair is fixedly connected with the screw rod gear in a coaxial manner, the end of the screw rod nut sliding pair is axially positioned and positioned by the clamp after passing through the screw rod gear, and the other end of the screw rod nut sliding pair is contact-connected with the piston.

[0010] The screw rod piston and the screw rod gear are press-fitted, and the bearing and the worm are press-fitted.

[0011] The utility model discloses a beneficial effect is:

[0012] The utility model discloses can drive two pistons simultaneously, reduce the overall cost of brake system, simplify complex brake pipeline system, promote the clamping brake response rate, and will assemble efficiency, system weight reduction, the overall brake performance comprehensive improvement. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 For the utility model discloses a kind of simultaneously drive two pistons for brake clamping mechanical transmission unit structure perspective view;

[0014] Figure 2 For the utility model discloses a kind of simultaneously drive two pistons for brake clamping mechanical transmission unit structure explosion view;

[0015] Figure 1 And Figure 2 In it: screw rod piston (1), screw rod gear (2), worm (3), bearing (4), differential (5);

[0016] Figure 3 For the utility model's piston screw rod assembly structure explosion view;

[0017] Figure 3 In it: screw rod (1.1), piston (1.2), clamp (6). DETAILED DESCRIPTION

[0018] The transmission structure of the utility model is further explained as follows in combination with the drawings of the specification.

[0019] As Figure 1 And Figure 2 As shown, the structure includes differential 5 and two groups of piston transmission mechanisms, and one group of piston transmission mechanisms is connected to the two ends of differential 5, the two groups of piston transmission mechanisms are symmetrically arranged at the two ends of differential 5, and differential 5 is connected to an external motor; the external motor drives differential 5 to rotate, and then drives the two groups of piston transmission mechanisms to move synchronously.

[0020] Each group of piston transmission mechanisms includes screw rod piston 1, screw rod gear 2, worm 3 and bearing 4, one end of worm 3 is connected to bearing 4 and is supported and installed through bearing 4, the rotation of worm 3 is supported through bearing 4, the other end is coaxially and synchronously connected to differential 5, worm 3 and screw rod gear 2 are engagedly connected, and one end of screw rod gear 2 and screw rod piston 1 is coaxially and synchronously connected.

[0021] The structure of the two ends of differential 5 is symmetrical, the worm 3 of the piston transmission mechanism of the two ends is also symmetrically connected and simultaneously driven, so that the screw rod pistons on both sides are driven consistently.

[0022] The transmission mechanism adopts a differential gear 5 connected with a worm 3, the teeth of the worm 3 are connected with the teeth of a screw gear 2, and the screw gear 2 is coaxially connected with a screw rod piston 1.

[0023] The transmission mechanism comprises the differential gear 5 and the worm 3, the differential gear 5 is synchronously rotatably sleeved on the shaft of the worm 3, the worm 3 is sleeved in a bearing 4, the worm 3 is connected with the screw gear 2, and the screw gear 2 is connected with the screw rod piston 1.

[0024] The bearing 4 is a deep groove ball bearing, the worm 3 is sleeved with the deep groove ball bearing at one end, and the worm 3 is positioned on the external shell through the deep groove ball bearing.

[0025] The screw gear 2 is a worm wheel of the worm and gear pair, the screw gear 2 and the worm 3 are engaged to form the worm and gear pair.

[0026] As shown in the figure, Figure 3 The screw rod piston 1 comprises a screw nut sliding pair 1.1 and a piston 1.2, one end of the screw nut sliding pair 1.1 is fixedly connected with the screw gear 2 in a coaxial mode, the end of the screw nut sliding pair 1.1 passes through the screw gear 2 and is axially limited and positioned by a clamp 6, and the other end of the screw nut sliding pair 1.1 is in contact with the piston 1.2, more specifically, the screw nut sliding pair 1.1 is sleeved in the piston 1.2, so as to form a screw rod piston assembly.

[0027] In the specific implementation, the screw nut sliding pair 1.1 comprises a screw rod and a nut sleeve sleeved on the screw rod through threads, and an axial limiting structure is further arranged, the nut sleeve is limited to move only in the axial direction by the axial limiting structure, and the screw rod rotation drives the nut sleeve to move axially due to the effect of the axial limiting structure.

[0028] The screw rod piston 1 is connected with the screw gear 2 in a press-fit mode, the bearing 4 is connected with the worm 3 in a press-fit mode, and all the gears are straight gears or helical gears.

[0029] The differential gear 5 structure is arranged in the middle of the two worms 3, the rotation speeds of the two worms 3 can be balanced, the driving speeds are consistent, and the movements of the two pistons are consistent.

[0030] The worm and gear pairs and the bearings on the two sides are arranged in the external shell, and the end portions of the two pistons can be connected with friction plates and other structures for clamping and braking functions.

[0031] The utility model drives the worm and gear pair shaft by the differential gear, drives the screw rod piston assembly gear by the worm and gear pair gear, drives the piston screw rod by the screw rod piston gear, drives the piston by the piston screw rod, and the piston movement drives the friction plate, realizes the clamping and braking function.

[0032] When the transmission mechanism works, the differential 5 is driven to rotate by an external motor, the worm gear 3 rotates synchronously with the differential 5, the worm gear 3 drives the screw gear 2 to rotate, the screw gear 2 drives the screw rod 1.1 to rotate and converts the rotary motion into linear motion to push the piston 1.2, the piston 1.2 is connected with the friction plate at the other end, and the contact clamping force is generated.

[0033] The screw rod sleeve at one end of the worm gear 3 is provided with the deep groove ball bearing 4, and the worm gear 3 is positioned on the external housing through the deep groove ball bearing 4; the screw rod sleeve at the other end of the worm gear 3 is provided with the differential 5, and the differential 5 is provided with the worm gear 3 structure on both sides, and the structures on both sides are generally symmetrical.

[0034] As shown in Figure 1 The worm gear 3 and the differential 5 change the transmission direction through the worm gear transmission, and the worm gear transmission is beneficial to the stability of torque transmission and can effectively reduce the working noise.

[0035] As shown in Figure 1 The differential 5 changes the transmission direction through the differential transmission, and the differential transmission is beneficial to balancing the rotary speeds of the worm gears 3 on both sides, so that the movements on both sides are consistent, and the clamping and releasing of the pistons 1.2 on both sides are synchronized.

[0036] Therefore, the structure of the utility model can replace the original oil pressure brake in the brake system, remove the pipeline arrangement of the brake system, drive two pistons at the same time, respond faster, and improve the braking performance.

[0037] The preferred embodiments of the utility model are specifically described above, but the utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and the equivalent modifications or replacements are all included in the range defined by the claims of the application. In the specific implementation, the differential 5 and the worm gears 4 on both sides are combined.

Claims

1. A simultaneous drive of two pistons for a brake clamping mechanical transmission unit structure, characterized by: The differential (5) is connected with two groups of piston transmission mechanisms, one group of piston transmission mechanism is connected with the two ends of the differential (5), the two groups of piston transmission mechanisms are symmetrically arranged at the two ends of the differential (5), and the differential (5) is connected with an external motor; each group of piston transmission mechanism comprises a screw rod piston (1), a screw rod gear (2), a worm (3) and a bearing (4), one end of the worm (3) is connected with the bearing (4) and is supported and installed through the bearing (4), the other end is coaxially connected with the differential (5), the worm (3) and the screw rod gear (2) are engagedly connected, and one end of the screw rod gear (2) and the screw rod piston (1) are coaxially connected.

2. A structure of a brake clamping mechanical transmission unit simultaneously driving two pistons according to claim 1, characterized in that: The differential (5) is synchronously rotatably sleeved on the shaft of the worm (3), and the worm (3) is sleeved in the bearing (4).

3. A structure of a brake clamping mechanical transmission unit simultaneously driving two pistons according to claim 1, characterized in that: The bearing (4) is a deep groove ball bearing, one end of the worm (3) is sleeved with the deep groove ball bearing, and the worm (3) is positioned on the external housing through the deep groove ball bearing.

4. A structure for a brake-clamp mechanical transmission unit that simultaneously drives two pistons according to claim 1, characterized in that: The screw rod gear (2) is a worm wheel of the worm and gear pair, the screw rod gear (2) and the worm (3) are engaged to form the worm and gear pair.

5. A structure for a brake-clamp mechanical transmission unit that simultaneously drives two pistons according to claim 1, characterized in that: The screw rod piston (1) comprises a screw rod nut sliding pair (1.1) and a piston (1.2), one end of the screw rod nut sliding pair (1.1) is fixedly connected with the screw rod gear (2) in a coaxial mode, the end of the screw rod nut sliding pair (1.1) passes through the screw rod gear (2) and is axially limited and positioned by the clamp (6), and the other end of the screw rod nut sliding pair (1.1) is in contact with the piston (1.2).

6. A two-piston simultaneous drive for a brake clamping mechanical transmission unit structure according to claim 4, characterized in that: The screw rod piston (1) and the screw rod gear (2) are press-connected, and the bearing (4) and the worm (3) are press-connected.

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