Dry-type fixed calipers

Abstract

The utility model relates to the field of brakes, and discloses a dry-type fixed caliper which comprises a caliper body, a brake driving mechanism drives a brake block to brake, a first mounting cavity is formed in the outer end face of the first caliper body, a second mounting cavity is formed in the inner side end face of the first caliper body, and the brake driving mechanism comprises a driving motor and a transmission mechanism. The driving motor is mounted in the second mounting cavity, the transmission mechanism is mounted in the first mounting cavity, the driving motor is connected with the transmission mechanism to drive the transmission mechanism to move, and the transmission mechanism drives the brake block to axially move; a top cover is arranged at the upper end of the mounting cavity I, and the transmission mechanism is mounted in a space formed by the top cover and the mounting cavity II; the transmission mechanism comprises a driving shaft and further comprises a guide cavity, the guide cavity is located around the second installation cavity, the axes of the guide cavity are parallel, the guide cavity extends from the outer end to the jaw direction, the driving shaft can act on the brake block through the guide cavity, and the brake caliper has the advantages of being compact in structure and reliable in braking force and cannot affect existing vehicle design.

Description

Technical Field

[0001] This invention relates to the field of brakes, and mainly to a dry fixed caliper. Background Technology

[0002] Traditional fixed brakes typically use hydraulic actuation, offering advantages such as reliable braking, a clean appearance, and small overall size, and are generally used in high-end vehicles. With the increasing prevalence of electrification, electronic vehicle control is becoming the norm, and electronic braking has seen numerous technological breakthroughs and trials in the field of parking brakes. For example, the applicant's prior patent CN214325076U describes an electronic parking brake control system for motor vehicles; however, this type of parking brake is a separate solution from fixed brakes and cannot be directly replaced. Existing technologies also lack electronic actuation methods for fixed brakes. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a dry-type fixed caliper.

[0004] A dry-type fixed caliper includes a caliper body, which includes a brake port in the middle region, a first caliper body outside the brake port, and a second caliper body inside the brake port. The brake port has a slot structure, and brake blocks are provided on both the upper and lower sides of the brake port. The direction of movement of the brake blocks is defined as the axial direction. A brake drive mechanism is provided in the first caliper body and / or the second caliper body. The brake drive mechanism drives the brake blocks to brake. A first mounting cavity is provided on the outer end face of the first caliper body, and a second mounting cavity is provided on the inner end face of the first caliper body. The brake drive mechanism includes a drive motor and a transmission mechanism. The drive motor is installed in the second mounting cavity, and the transmission mechanism is installed in the first mounting cavity. The drive motor is connected to the transmission mechanism and drives the transmission mechanism to move. The transmission mechanism drives the brake blocks to move axially. A top cover is provided at the upper end of the first mounting cavity, and the transmission mechanism is installed in the space formed by the top cover and the second mounting cavity. The transmission mechanism includes a drive shaft and a guide cavity. The guide cavity is located around the second mounting cavity and its axes are parallel to each other. The guide cavity extends from the outer end towards the caliper jaw, and the drive shaft can act on the brake block through the guide cavity.

[0005] Preferably, the mounting cavity one includes a first slot chamber in the middle and second slot chambers on both sides of the first slot chamber. The first slot chamber is connected to the mounting cavity two. An output component is installed in the first slot chamber. The output shaft of the drive motor is connected to the output component and drives the output component to move. A transmission gear is installed in the second slot chamber. The output component and the transmission gear mesh. An internal thread is provided in the middle of the transmission gear. The transmission mechanism also includes a drive shaft. An external thread is provided on the outer side of the drive shaft. The drive shaft meshes with the internal thread of the transmission gear. The rotation of the transmission gear drives the drive shaft to move axially.

[0006] The guide cavity is located on the end face of the upper clamp body jaw side. The guide cavity is connected to the second groove. The drive shaft extends into the guide cavity and can act on the brake block.

[0007] Preferably, the output component is a planetary reduction gear mechanism, including a first gear connected to the drive motor in the middle, multiple second gears meshing with the outer ring of the first gear, and a gear ring meshing with the outer ring of each second gear. Both the inner and outer rings of the gear ring are provided with transmission teeth. The first gear and the second gear are both located inside the gear ring. The inner ring of the gear ring meshes with the second gear, and the outer ring of the gear ring meshes with the transmission gear. A fixing groove is provided on the bottom surface of the mounting cavity one. A planetary carrier is installed in the fixing groove. The second gear is installed on the planetary carrier. A through hole is provided on the bottom surface of the fixing groove to connect to the mounting cavity two. The output shaft of the drive motor passes through the through hole and connects to the first gear.

[0008] Preferably, the upper end of the toothed ring is provided with a mounting seat, which is fixedly connected to the toothed ring and coaxially arranged. The inner side of the top cover is provided with a mounting post, and the mounting seat is mounted on the mounting post through a bearing.

[0009] Preferably, the inner side of the top cover is provided with a guide groove, the upper end of the drive shaft is inserted into the guide groove and can move up and down along the guide groove; a piston sleeve is provided in the guide cavity, and the drive shaft is slidably connected in the piston sleeve to push the piston sleeve to move.

[0010] Preferably, there are two second slots, with each drive shaft corresponding to one of the second slots.

[0011] Preferably, the device also includes a support bearing for supporting the transmission gear. The support bearing is mounted on the bottom surface of the second groove, and the top cover is provided with a mounting groove for mounting the support bearing. The support bearing is a needle roller bearing.

[0012] Preferably, a stepped groove is provided at the opening of the second mounting cavity, and the mounting seat of the drive motor is fixed in the stepped groove by bolts, with the mounting seat flush with the end face around the second mounting cavity.

[0013] Preferably, a plug is provided on the side of the first clamp body near the jaws, and the plug is connected to the drive motor; the first clamp body and the second clamp body are integrally formed.

[0014] Preferably, a limiting structure is provided on the circumferential side of the drive shaft to restrict its circumferential rotation. The limiting structure cooperates with the guide cavity or the top cover to achieve circumferential limiting.

[0015] Compared with existing technologies, this solution has the following advantages: the overall shape of the designed brake is basically the same as that of existing fixed brakes, with a simple shape and a high degree of integration. Moreover, the inner and outer slotted structure design facilitates later maintenance. At the same time, the transmission mechanism can be selected according to actual needs, with large braking force and fast response speed. In addition, the clamp body of this solution can be designed as an integrated unit, which greatly improves the strength of the clamp body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the clamp body.

[0017] Figure 2 for Figure 1 Rear view.

[0018] Figure 3 yes Figure 2 A sectional view.

[0019] Figure 4 yes Figure 1 Top view.

[0020] Figure 5 yes Figure 4 A sectional view.

[0021] Figure 6 This is a schematic diagram of the transmission mechanism.

[0022] The technical names of the reference numerals in the figure are as follows: 1—clamp body, 2—brake port, 3—first clamp body, 4—second clamp body, 5—brake drive mechanism, 6—mounting cavity one, 7—mounting cavity two, 8—drive motor, 9—transmission mechanism, 10—top cover, 11—first slot, 12—second slot, 13—output component, 29—transmission gear, 14—drive shaft, 15—guide cavity, 16—first gear, 17—second gear, 18—gear ring, 19—fixed groove, 20—bracket, 21—mounting seat, 22—mounting post, 23—guide groove, 24—piston sleeve, 25—support bearing, 26—mounting groove, 27—plug, 28—limiting groove, 30—brake block. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] A dry-type fixed caliper includes a caliper body 1. The caliper body 1 includes a brake opening 2 in the middle region, a first caliper body 3 outside the brake opening 2, and a second caliper body 4 inside the brake opening 2. The brake opening 2 has a slotted structure. Brake blocks 30 are located in the brake opening 2. Brake blocks 30 are provided on both the upper and lower sides of the brake opening 2. In this embodiment, the caliper body 1 is a one-piece molded structure. The brake opening 2 is the central caliper jaw. During installation, the brake disc is located inside the brake opening 2, i.e., between the two brake blocks 30 of the brake opening 2. The terms "inner side" and "outer side" refer to the usage state. The specific inner and outer sides are determined by the design of the installation part and do not affect the protection scope of this solution. Figure 1 The upper-middle clamp 1 is defined as the first clamp 3, and its orientation (up, down, left, right, front, back) is also defined as follows: Figure 1 For reference only.

[0026] The axial direction of movement along the brake block 30 is defined as the axial direction. A brake drive mechanism 5 is provided in the first caliper 3 and / or the second caliper 4, which drives the brake block 30 to brake. In this scheme, the first caliper 3 and the second caliper 4 are provided with the same braking structure, so that both sides of the brake disc can be braked simultaneously during braking. For ease of description, this scheme is described using the braking structure of the first caliper 3.

[0027] The outer end face of the first clamp body 3 is provided with a mounting cavity 6, and the inner end face of the first clamp body 3 is provided with a mounting cavity 7. The brake drive mechanism 5 is installed in the mounting cavity 6 and the mounting cavity 7. The shape of the mounting cavity is adapted to the transmission structure to be assembled. The brake drive mechanism 5 is connected to the brake block 30, and the brake drive mechanism 5 can drive the brake block 30 to perform a braking action.

[0028] The braking drive mechanism 5 includes a drive motor 8 and a transmission mechanism 9. The drive motor 8 is installed in the second mounting cavity 7, and its output shaft extends upward into the first mounting cavity 6. The transmission mechanism 9 is installed in the first mounting cavity 6. The drive motor 8 is connected to the transmission mechanism 9, which drives the transmission mechanism 9 to move. The transmission mechanism 9 drives the brake block 30 to move axially. A top cover 10 is provided at the upper end of the first mounting cavity 6, and the transmission mechanism 9 is installed in the space formed by the top cover 10 and the second mounting cavity 7.

[0029] The mounting cavity 6 includes a first slot 11 in the middle and second slots 12 on both sides of the first slot 11. The first slot 11 is connected to the mounting cavity 7. An output component 13 is installed in the first slot 11. In this embodiment, the output component 13 plays the role of decelerating and increasing torque. The output shaft of the drive motor 8 is connected to the output component 13 and drives the output component 13 to move. A transmission gear 29 is installed in the second slot 12. The output component 13 and the transmission gear 29 mesh. The transmission gear 29 has an internal thread in the middle. The transmission mechanism 9 also includes a drive shaft 14. The outer side of the drive shaft 14 has an external thread. The drive shaft 14 meshes with the internal thread of the transmission gear 29. The rotation of the transmission gear 29 drives the drive shaft 14 to move axially.

[0030] The guide cavity 15 is disposed on the end face of the jaw side of the upper clamp body 1. The guide cavity 15 is connected to the second groove. The drive shaft 14 extends into the guide cavity 15 and can act on the brake block 30.

[0031] In this design, the output component 13 is a planetary reduction gear mechanism, including a first gear 16 connected to the drive motor 8 in the middle, multiple second gears 17 meshing with the outer ring of the first gear 16, and a gear ring 18 meshing with the outer ring of each second gear 17. Both the inner and outer rings of the gear ring 18 are provided with transmission teeth. The first gear 16 and the second gears 17 are located inside the gear ring 18, with the inner ring of the gear ring 18 meshing with the second gear 17, and the outer ring of the gear ring 18 meshing with the transmission gear 29. A fixing groove 19 is provided on the bottom surface of the mounting cavity 1 6, and a planetary carrier is installed in the fixing groove 19. The second gears 17 are mounted on the planetary carrier. A through hole is provided on the bottom surface of the fixing groove 19, connecting to the mounting cavity 2 7. The output shaft of the drive motor 8 passes through the through hole and connects to the first gear 16. Specifically, in this design, there are three second gears 17. Both the first gear 16 and the second gear 17 are mounted on the planetary carrier, and the gear ring 18 and the first gear 16 are arranged coaxially.

[0032] In this design, a mounting base 21 is provided at the upper end of the toothed ring 18. The mounting base 21 is fixedly connected to the toothed ring 18 and coaxially arranged. A mounting post 22 is provided on the inner side of the top cover 10, and the mounting base 21 is mounted on the mounting post 22 via bearings. The mounting base 21 can be completely sealed to the upper end of the toothed ring 18. However, in this embodiment, to reduce weight, the mounting base 21 and the toothed ring 18 are connected by three connecting wings.

[0033] The top cover 10 has a guide groove 23 on its inner side. The upper end of the drive shaft 14 is inserted into the guide groove 23 and can move up and down along the guide groove 23. A piston sleeve 24 is provided in the guide cavity 15. The drive shaft 14 is slidably connected in the piston sleeve 24 to push the piston sleeve 24 to move. The guide groove 23 is coated with grease, and the drive shaft 14 can slide up and down.

[0034] In this embodiment, there are two second slots, and each drive shaft 14 corresponds to one of the second slots. That is, each brake block 30 is driven by two drive shafts 14, located on the left and right sides of the brake block 30 respectively, thereby ensuring that the brake block 30 can brake smoothly and ensuring braking stability.

[0035] Since the braking force is transmitted to the transmission gear 29 through the drive rod during braking, the requirements for the bearings that mount the transmission gear 29 are very high. In this design, the bearing used to support the transmission gear 29 is defined as a support bearing 25. The support bearing 25 is mounted on the bottom surface of the second groove, and the top cover 10 is provided with a mounting groove 26 for mounting the support bearing 25. The support bearing 25 is a needle roller bearing, which can bear greater braking force axially to ensure the safety of the components.

[0036] In this design, a stepped groove is provided at the opening of the mounting cavity 7 for a flush design. The mounting base 21 of the drive motor 8 is fixed in the stepped groove with bolts, and the mounting base 21 is flush with the end face around the mounting cavity 7. Of course, the design of other structures should also be within the scope of this design. The innovation of this design is that the drive motor 8 can be inserted into the mounting cavity 7 through the brake port 2 and then fixed in that position, which greatly reduces the overall size axially and provides a basis for the design of a fixed caliper.

[0037] Secondly, a plug 27 is provided on the side of the first clamp body 3 near the jaws, and the plug 27 is connected to the drive motor 8; the first clamp body 3 and the second clamp body 4 are integrally formed. This structural design eliminates the need for extra wiring harnesses for the motor, facilitating bus integration design, and also provides greater safety due to its proximity to the jaws.

[0038] The overall working process of this brake is as follows:

[0039] The drive motor 8 drives the first gear 16 to rotate, and the planetary reduction mechanism reduces the speed and increases the torque. Then, the gear ring 18 drives the transmission gear 29 to rotate through meshing. The transmission gear 29 drives the threaded drive shaft 14 to move axially. The drive shaft 14 pushes the piston sleeve 24 and brake block 30 to brake. After the brake is released, the motor reverses. Then, the drive shaft 14 disengages from applying force to the piston sleeve 24. The brake block 30 and the piston return to their original positions under the action of the return spring.

[0040] Example 2

[0041] The difference between this embodiment and embodiment 1 is that the output component 13 drives the transmission gear 29 to rotate through other transmission structures.

[0042] Example 3

[0043] This embodiment refines Embodiment 1: A limiting structure is provided on the circumferential side of the drive shaft 14 to restrict its circumferential rotation. The limiting structure cooperates with the guide cavity 15 or the top cover 10 to achieve circumferential limiting. Specifically, in this embodiment, a limiting groove 28 is formed on the upper side of the drive shaft 14, and a limiting block matching the limiting groove 28 is formed in the guide groove 23. The limiting groove 28 cooperates with the limiting block, and the limiting groove 28 is axially positioned.

Claims

1. A dry fixed calliper caliper characterised in that: The utility model provides a kind of clamp body (1), the clamp body (1) includes the brake mouth (2) of middle area, and the first clamp body (3) outside brake mouth (2) and the second clamp body (4) inside brake mouth (2), brake mouth (2) is notch structure, brake mouth (2) upper side and lower side are provided with brake block (30), define as axial along brake block (30) movement direction, brake driving mechanism (5) is provided in the first clamp body (3) or / and the second clamp body (4), brake driving mechanism (5) drives brake block (30) to brake, first clamp body (3) outer end surface is provided with installation cavity one (6), first clamp body (3) inner side end surface is provided with installation cavity two (7), brake driving mechanism (5) includes driving motor (8) and transmission mechanism (9), driving motor (8) is installed in installation cavity two (7), transmission mechanism (9) is installed in installation cavity one (6), driving motor (8) is connected with transmission mechanism (9) and drives transmission mechanism (9) to move, transmission mechanism (9) drives brake block (30) to move axially;The upper end of installation cavity one (6) is provided with top cover (10), transmission mechanism (9) is installed in the space formed by top cover (10) and installation cavity two (7);Transmission mechanism (9) includes driving shaft (14), further including guide cavity (15), guide cavity (15) is located around installation cavity two (7) and the axis is parallel with each other, guide cavity (15) extends from outer end to the direction of clamp mouth, driving shaft (14) can act on brake block (30) by guide cavity (15).

2. A dry-type stationary caliper according to claim 1, characterized in that: Installation cavity one (6) includes first slot chamber (11) of middle position and second slot chamber (12) on both sides of first slot chamber (11), first slot chamber (11) is communicated with installation cavity two (7), output assembly (13) is installed in first slot chamber (11), the output shaft of driving motor (8) is connected with output assembly (13) and drives output assembly (13) to move, transmission gear (29) is installed in second slot chamber (12), output assembly (13) and transmission gear (29) are engaged, the middle part of transmission gear (29) is provided with internal thread, transmission mechanism (9) further includes driving shaft (14), the outer side of driving shaft (14) is provided with external thread, driving shaft (14) is engaged with the internal thread of transmission gear (29), transmission gear (29) rotates and drives driving shaft (14) to move axially; Guide cavity (15) is arranged on the end face of the upper clamp body (1) on the side of the clamp mouth, the guide cavity (15) is communicated with the second slot, the driving shaft (14) extends into the guide cavity (15) and can act on the brake block (30).

3. A dry-type stationary caliper according to claim 2, characterized in that: The output assembly (13) is a planetary reduction gear mechanism, comprising a first gear (16) connected with the driving motor (8), a plurality of second gears (17) engaged with the outer ring of the first gear (16), and a gear ring (18) engaged with the outer ring of each second gear (17), the inner and outer rings of the gear ring (18) are provided with transmission teeth, the first gear (16) and the second gear (17) are located on the inner side of the gear ring (18), the inner ring of the gear ring (18) is engaged with the second gear (17), and the outer ring of the gear ring (18) is engaged with the transmission gear (29); a fixing groove (19) is arranged on the bottom surface of the mounting cavity one (6), a planet carrier is mounted in the fixing groove (19), the second gear (17) is mounted on the planet carrier, and the bottom surface of the fixing groove (19) is provided with a through hole communicating with the mounting cavity two (7), and the output shaft of the driving motor (8) passes out of the through hole and is connected with the first gear (16).

4. A dry-type stationary caliper according to claim 3, characterized in that: The upper end of the gear ring (18) is provided with a mounting seat (21), the mounting seat (21) is fixedly connected with the gear ring (18) and coaxially arranged, the inner side of the top cover (10) is provided with a mounting column (22), and the mounting seat (21) is mounted on the mounting column (22) through a bearing.

5. A dry-type stationary caliper according to claim 2, wherein: The inner side of the top cover (10) is provided with a guide groove (23), the upper end of the driving shaft (14) is inserted into the guide groove (23) and can move up and down along the guide groove (23); a piston sleeve (24) is arranged in the guide cavity (15), and the driving shaft (14) is slidingly connected in the piston sleeve (24) for pushing the piston sleeve (24) to move.

6. A dry-type stationary caliper according to claim 2 or 3 or 4 or 5, characterized in that: The number of the second grooves is two, and the driving shaft (14) corresponds to the second grooves one by one.

7. A dry-type stationary caliper according to claim 3, wherein: Further comprising a supporting bearing (25) for supporting the transmission gear (29), the supporting bearing (25) is mounted on the bottom surface of the second groove, and the top cover (10) is provided with a mounting groove (26) for mounting the supporting bearing (25); the supporting bearing (25) is a needle bearing.

8. A dry-type stationary caliper according to claim 1 or 2 or 3 or 4 or 5, characterized in that: A stepped groove is arranged at the opening of the mounting cavity two (7), the mounting seat (21) of the driving motor (8) is fixed in the stepped groove through bolts, and the mounting seat (21) is flush with the end face around the mounting cavity two (7).

9. A dry-type stationary caliper according to claim 1 or 2 or 3 or 4 or 5, characterized in that: A plug (27) is arranged on the side surface of the first jaw body (3) close to the jaw side, the plug (27) is connected with the driving motor (8); the first jaw body (3) and the second jaw body (4) are an integral molding structure.

10. The dry-type stationary caliper according to claim 1, wherein: A limiting structure for limiting the circumferential rotation of the driving shaft (14) is arranged on the circumferential side surface of the driving shaft (14), and the limiting structure cooperates with the guide cavity (15) or the top cover (10) to realize circumferential limiting.

Images