A pneumatic disc brake

Abstract

The present invention relates to a pneumatic disc brake, comprising a caliper body, a brake disc, and a linkage device; the caliper body comprises a caliper body main body, and the caliper body main body is formed by connecting a box section and a bridge frame section; a first installation cavity is provided in the box section, and a first protrusion, a driving connection plate, a second protrusion, and a connection hole group are provided on the box section; a second protrusion, a third protrusion, a first groove, a second groove, and a fourth protrusion are provided on the bridge frame section; and an arc transition connection is adopted at the connection between the box section and the bridge frame section. The advantages of the present invention are: by improving the traditional caliper body structure, on the basis of meeting the overall structural strength of the caliper body, through the mutual cooperation between different structures such as different protrusion structures, arc segment structures, groove structures, and arc transition connection structures, the overall size of the caliper body is reduced as much as possible, the installation of the caliper body is facilitated, and the caliper body is prevented from interfering with the installation of other parts of the automobile.

Description

Technical Field

[0001] The invention relates to an automobile brake, in particular to an air pressure disc brake. Background Art

[0002] Disc brakes have been widely used in cars, buses and dangerous goods vehicles. Most cars now use disc brakes on all wheels, and a few cars only use disc brakes on the front wheels, which are used in conjunction with drum brakes on the rear wheels to give the car a higher directional stability during braking. In commercial vehicles, disc brakes are gradually being adopted in new and high-end models.

[0003] Disc brakes are pneumatic, controlled by air pressure, and their main components include brake discs, air chambers, brake calipers, brackets, etc. Disc brakes have fast heat dissipation, light weight, simple structure, and easy adjustment. Especially when under high load, they have good high temperature resistance, stable braking effect, and are not afraid of muddy water invasion. In winter and driving under bad road conditions, many cars use disc brakes with flat brake discs, perforated brake discs, and ventilated brake discs. Among them, ventilated brake discs have better braking effect and ventilation and heat dissipation capacity.

[0004] For example, patent CN108779818A mentions a disc brake, which includes a brake caliper and a brake actuating mechanism, wherein the brake caliper overlaps with at least one brake disc, and the brake actuating mechanism is arranged in the brake caliper and has: - an amplification mechanism, which includes a brake rod, which can rotate around a pivot bearing to introduce a clamping force from an actuator; - a thrust element, which transfers the amplified clamping force to the brake disc, and is characterized in that a force redirection device for transferring the input force from the actuator to the brake rod is arranged between the actuator and the brake caliper.

[0005] As another example, patent CN105822701A mentions a disc brake for heavy vehicles, which includes: first and second brake pads arranged to face a brake rotor; a caliper for applying a clamping load to the brake pads to hinder the rotor from rotating, the caliper further including: a radial opening, the size of which is determined so as to facilitate assembly and removal of the brake pads therefrom; and a pad strip, which is arranged to extend across the opening and releasably constrain the brake pads at least radially outwardly relative to the caliper; wherein the disc brake further includes at least one support member for supporting the rear of at least one of the brake pads, the support member being provided with a guide structure, the guide structure being configured to engage with the pad strip and thereby limit the rotation of the brake pad around a radial axis.

[0006] The above two disc brakes both have certain defects: for the structure of their brake calipers, the outer surfaces of the brake calipers are all single arc-shaped surfaces, which results in the entire brake caliper being made larger in appearance, and the corresponding brake caliper being heavier in weight. In addition, when the brake caliper is larger in appearance, the corresponding required installation space will also be larger. In the actual installation process, the brake caliper will be affected by factors such as the installation space inside the car and the structure of adjacent components, resulting in the installation space of the brake caliper being smaller. In such a case, the brake caliper cannot be installed.

[0007] In addition, the disc brakes used in the existing market usually include several main components, including a caliper body, a brake disc, a brake disc, a friction plate, and a linkage device. The linkage device usually includes a pair of linkage shafts. The two linkage shafts are linked by a chain. When working, the two linkage shafts simultaneously drive the friction plate to move closer to the brake disc through a linkage method, thereby achieving braking. In the above structure, a linkage chain that matches the chain needs to be installed on the end of the linkage shaft, and usually the linkage chain and the linkage chain are installed on the outside of the caliper body, even if they are exposed to the outside. Therefore, in view of this phenomenon, a protective cover needs to be installed on the outside of the linkage chain and the linkage chain to protect the linkage chain and the linkage chain. The structure of the existing protective cover usually adopts an arc-shaped cover structure, and its overall appearance is relatively large, and the corresponding installation space required is also relatively large. In the actual installation process, the brake caliper will be affected by factors such as the installation space inside the car and the structure of adjacent components, resulting in a relatively small installation space for the entire brake caliper. In such a case, after installing such a protective cover with a relatively large appearance, it is easy to affect the installation of other parts of the car. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a pneumatic disc brake which is light in weight and easy to install.

[0009] In order to solve the above technical problems, the technical solution of the present invention is: a pneumatic disc brake, the innovation of which is: comprising a caliper body, a brake disc, and a linkage device;

[0010] The clamp body comprises a clamp body main body, and the clamp body main body is formed by connecting a box section and a bridge section;

[0011] The box section is rectangular in shape, with a first installation cavity in the box section, and a first protrusion protruding upward is provided in the middle of the upper end surface of the box section, so that the entire box section is in the shape of a convex letter, and arc-shaped transition connections are adopted between the two sides of the first protrusion and the box section, and a driving connecting plate is provided on the side of the box section away from the bridge section, and an arc-shaped transition connection is adopted between the driving connecting plate and the box section, and the upper end surface of the first protrusion is an arc surface, and the height of the side of the first protrusion close to the driving connecting plate is higher than the height of the side of the first protrusion close to the bridge section, and a pair of symmetrically distributed protrusions are also provided at both ends of the side of the first protrusion close to the bridge section, and an arc-shaped transition connection is adopted between the protrusion and the first protrusion, and a second installation cavity is also opened on the first protrusion, and one side of the second installation cavity extends out of the first protrusion, and the other side is connected to the first installation cavity;

[0012] The driving connecting plate is stepped, including a first arc segment, a second arc segment, and a third arc segment, wherein the first arc segment is connected to the first protrusion, the second arc segment and the third arc segment each have two segments, and are symmetrically connected in sequence, and the first arc segment, the second arc segment, and the third arc segment are distributed in sequence from the middle of the driving connecting plate to the outer position of the driving connecting plate, and the heights of the first arc segment, the second arc segment, and the third arc segment decrease in sequence, and the two adjacent arc segments are connected by arc transitions, and the second arc segment is far away from the bridge segment. One side is flush with the end of the first arc segment, the other side of the second arc segment extends out of the first arc segment, a horizontally distributed first reinforcing rib plate is further provided between a section of the second arc segment extending out of the first arc segment and the first protrusion, and the connections between the first reinforcing rib plate and the second arc segment, the first arc segment, and the first protrusion are all connected by arc transition, both sides of the horizontal direction of the side where the second arc segment is connected to the third arc segment are extended out of the third arc segment, and the connection between the third arc segment and the second arc segment is all connected by arc transition;

[0013] The driving connecting plate is also provided with a first connecting hole group and a second connecting hole group, wherein the first connecting hole group is composed of two first connecting holes symmetrically arranged on both sides of the first protrusion, and the two first connecting holes are respectively arranged on the two second arc segments, and the second connecting hole group is composed of two second connecting holes symmetrically arranged on both sides of the first protrusion and located outside the first connecting hole group, and the two second connecting holes are respectively arranged on the two third arc segments, and the height of the first connecting hole is higher than the height of the second connecting hole;

[0014] The side of the box section away from the bridge section extends out of the driving connection plate, and the side of the driving connection plate is transitionally connected to the box section via an inclined plate, and the middle position of the side where the driving connection plate is connected to the box section is an arc section, and the opening of the arc section faces upward;

[0015] The cross section of the bridge frame section is in an arc shape, and a third installation cavity is provided in the middle position of the bridge frame section, which is used to install a brake disc and runs through the entire bridge frame section from top to bottom, and the third installation cavity is connected to the first installation cavity. At the same time, a cutout is provided in the upper position of the bridge frame section, and a second protrusion protruding upward is provided in the middle position of the cutout of the bridge frame section, which is located close to the box section. The second protrusion is connected to the first protrusion in an arc shape, and an embedding groove is provided on the side of the second protrusion away from the box section, and the friction plate of the brake disc is embedded and installed;

[0016] A pair of symmetrically distributed third protrusions are provided at the cutouts on both sides of the second protrusion, a downwardly concave first groove is also provided at the third protrusion on the bridge section, and an arc-shaped transition is formed between the third protrusion and the first groove, and a second groove is also provided on a side of the first groove away from the third protrusion and concave toward the inside of the bridge section, the second groove is located on a side of the first groove away from the second protrusion, and the height of the bottom end point of the second groove is lower than the height of the bottom end point of the first groove;

[0017] A fourth protrusion protruding upward is also provided at the middle position of the side of the bridge section away from the box section, the fourth protrusion is L-shaped, and a mounting hole is provided on the fourth protrusion and horizontally penetrates the fourth protrusion, and the mounting hole cooperates with the embedding groove to realize the installation of the brake disc friction plate;

[0018] The connection between the box section and the bridge section adopts an arc transition connection;

[0019] The brake disc is installed in the third installation cavity, and a brake disc friction plate is installed on the upper end of the brake disc, one side of the brake disc friction plate is embedded in the embedding groove of the second protrusion, and the other side of the brake disc friction plate is fixed to the fourth protrusion through a pin shaft;

[0020] The linkage device includes a pair of linkage shafts extending horizontally into the caliper body, which are respectively a driving shaft and a driven shaft. The end of the caliper body is also provided with a through hole for embedding and installing the driving shaft and the driven shaft. The driving shaft and the driven shaft are connected to the brake disc.

[0021] One side of the driving shaft and the driven shaft extends out of the caliper body, and a driving sprocket and a driven sprocket are respectively mounted on the driving shaft and the driven shaft extending out of the caliper body, and the driving sprocket and the driven sprocket are linked by a linkage chain;

[0022] A protective cover is mounted on the outer side of the driving sprocket, the driven sprocket and the linkage chain, the protective cover includes a base fixed to the end of the caliper body by bolts, the base has a first cavity for installing the driving sprocket, the driven sprocket and the linkage chain, and the base has a driving sprocket protective cover, a driven sprocket protective cover, an upper chain protective cover and a lower chain protective cover extending outward on the side of the base away from the caliper body, and the driving sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover and the lower chain protective cover respectively have a driving sprocket installation cavity, a driven sprocket installation cavity, an upper chain installation cavity and a lower chain installation cavity connected to the first cavity, and The driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity are interconnected, the upper chain protection cover and the upper chain installation cavity are in a V-shape corresponding to each other, and the height of the upper end point of the upper chain installation cavity is lower than the height of the upper end point of the driving sprocket installation cavity and the driven sprocket installation cavity, the lower chain protection cover and the lower chain installation cavity are in a corresponding straight shape, and the two sides of the lower chain protection cover are respectively connected to the driving sprocket protection cover and the driven sprocket protection cover in an arc-shaped transition, and the height of the lower end point of the lower chain installation cavity is higher than the height of the lower end point of the driving sprocket installation cavity and the driven sprocket installation cavity;

[0023] The driving sprocket protective cover is also provided with a through hole for allowing the driving shaft to pass through. After the driving shaft passes through the through hole, a torque protector is connected to the end of the driving shaft on this side, and a dust cap is also mounted on the outer side of the torque protector.

[0024] Furthermore, both sides of the upper end surface of the bridge section close to the box section are respectively provided with an avoidance groove.

[0025] Furthermore, the cross-section of the embedding groove is in the shape of a right-angled trapezoid, and the right angles of the embedding groove are all located on the upper side, and the size of the bottom edge of the embedding groove located on the inner side is smaller than the size of the bottom edge of the embedding groove located on the outer side.

[0026] Furthermore, the bridge section is provided with a first weight reducing groove and a second weight reducing groove on the upper and lower sides of one side away from the box section, respectively. There are two first weight reducing grooves, which are symmetrically distributed on both sides of the fourth protrusion. The cross-section of the second weight reducing groove is arc-shaped. A reinforcing rib is also installed in the second weight reducing groove. A pair of symmetrically distributed positioning grooves are also provided on both sides of the second weight reducing groove on the bottom surface of the bridge section.

[0027] Furthermore, an avoidance hole is respectively provided on both sides of the bridge section away from the box section, and the avoidance hole is in a triangular shape.

[0028] Furthermore, the outer side of the base is also provided with a plurality of first reinforcing ribs protruding outward, and the first reinforcing ribs extend along the outer edge of the base. On the base, a plurality of second reinforcing ribs are also provided between the first reinforcing ribs and the active sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover, and the lower chain protective cover. At least one third reinforcing rib is also provided between the upper chain protective cover and the lower chain protective cover.

[0029] Furthermore, a weight-reducing groove is provided on the base.

[0030] Furthermore, a sealing ring is arranged between the base and the caliper body, and a second cavity for embedding and installing the sealing ring is provided in the base, and the second cavity is located outside the first cavity.

[0031] Furthermore, a partition plate is installed in the first cavity on the base, and the partition plate is located between the driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity.

[0032] The advantages of the present invention are as follows: the caliper body structure of the present invention improves the traditional caliper body structure. On the basis of satisfying the overall structural strength of the caliper body, different structures such as protrusion structures, arc segment structures, groove structures, arc transition connection structures and the like cooperate with each other, thereby reducing the overall size of the caliper body as much as possible, facilitating the installation of the caliper body, avoiding the caliper body interfering with the installation of other parts of the automobile, and correspondingly reducing the weight of the caliper body.

[0033] By improving the traditional protective cover, through the base, the active sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover and the lower chain protective cover, and the mutual cooperation among the active sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover and the lower chain protective cover, the volume of the entire protective cover is greatly reduced on the basis of realizing the protection of the sprocket and the chain, and correspondingly the installation space of the protective cover is also reduced, which facilitates the smooth installation of other components.

[0034] For the design of the embedded groove, a right-angled trapezoidal design is adopted, so that when the brake disc friction plate is installed, its side end can be guided and positioned and fixed. In this way, the installation of the brake disc friction plate can be completed by only fixing the other side of the brake disc friction plate, without the need to fix both sides, which is very convenient.

[0035] The design of the first and second weight-reducing grooves on the upper and lower sides of the bridge section reduces the overall weight of the bridge section while ensuring the structural strength of the bridge section, thereby further reducing the weight of the clamp body. The setting of the reinforcing ribs is to enhance the structural strength of the second weight-reducing groove.

[0036] The avoidance grooves and avoidance holes on the bridge section are provided to leave installation space for other parts of the car as much as possible when the clamp body is installed, so as to facilitate the installation of other parts.

[0037] The upper end point of the upper chain installation cavity and the lower end point of the lower chain installation cavity are controlled to achieve the tensioning of the linkage chain and ensure the linkage of the linkage chain to the driving shaft and the driven shaft.

[0038] The first reinforcing rib plate, the second reinforcing rib plate and the third reinforcing rib plate are provided to reinforce the structure of the protective cover and improve the structural strength of the protective cover.

[0039] The design of the weight-reducing groove on the base reduces the overall weight of the base while ensuring the structural strength of the base, providing a good foundation for reducing the weight of the entire brake.

[0040] The avoidance grooves and avoidance holes on the bridge section are provided to leave installation space for other parts of the car as much as possible when the clamp body is installed, so as to facilitate the installation of other parts.

[0041] The sealing ring between the base and the caliper body plays a role of sealing protection, preventing external dust from entering the base through the gap between the base and the caliper body and affecting the operation of the linkage device.

[0042] The design of the partition plate is to separate the upper and lower layers of the linkage chain to avoid mutual influence between the upper and lower chains during operation, thereby ensuring the smooth operation of the linkage chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] Figure 1 It is a schematic diagram of the air disc brake of the present invention.

[0045] Figure 2 It is a schematic diagram of a caliper body in a pneumatic disc brake of the present invention.

[0046] Figure 3 It is a front view of the caliper body in the pneumatic disc brake of the present invention.

[0047] Figure 4 It is a side view of the caliper body in the pneumatic disc brake of the present invention.

[0048] Figure 5 It is a top view of the caliper body in the pneumatic disc brake of the present invention.

[0049] Figure 6It is a rear view of the caliper body in the pneumatic disc brake of the present invention.

[0050] Figure 7 It is a bottom view of the caliper body in the pneumatic disc brake of the present invention.

[0051] Figure 8 It is a schematic diagram of the coordination of the linkage device in the pneumatic disc brake of the present invention.

[0052] Fig. 9 It is a schematic diagram of a protective cover in a pneumatic disc brake of the present invention.

[0053] Fig.10 It is a rear view of the protective cover in the air disc brake of the present invention. DETAILED DESCRIPTION

[0054] The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0055] like Figure 1-Figure 10 The pneumatic disc brake shown includes a caliper body 3, a brake disc 4, and a linkage device 5.

[0056] like Figure 2-Figure 7 As shown in the schematic diagram, the clamp body includes a clamp body main body, which is formed by connecting a box section 1 and a bridge section 2. The connection between the box section 1 and the bridge section 2 adopts an arc transition connection, and the box section 1 and the bridge section 2 are distributed in a convex shape as a whole.

[0057] The box section 1 is rectangular in shape and has a first mounting cavity 101 therein for facilitating the installation of other components. A first protrusion 102 protruding upward is provided in the middle of the upper end surface of the box section 1, so that the entire box section 1 is in the shape of a convex letter.

[0058] An arc-shaped transition connection is adopted between the two sides of the first protrusion 102 and the box section 1. The upper end face of the first protrusion 102 is an arc-shaped surface, and the height of the side of the first protrusion 102 close to the driving connecting plate 104 is higher than the height of the side of the first protrusion 102 close to the bridge section 2. The opening direction of the arc-shaped surface of the first protrusion 102 is downward, and a pair of symmetrically distributed protrusions 105 are also provided at both ends of the side of the first protrusion 102 close to the bridge section 2. An arc-shaped transition connection is adopted between the protrusion 105 and the first protrusion 102. A second installation cavity 106 is also opened on the first protrusion 102, and one side of the second installation cavity 106 extends out of the first protrusion 102, and the other side of the second installation cavity 106 is connected to the first installation cavity 101.

[0059] A driving connection plate 104 is provided on the side of the box section 1 away from the bridge section 2 , and an arc-shaped transition connection is adopted between the driving connection plate 104 and the box section 1 .

[0060] The driving connecting plate 104 is stepped, including a first arc segment 107, a second arc segment 108, and a third arc segment 109, wherein the first arc segment 107 is connected to the first protrusion 102, and the second arc segment 108 and the third arc segment 109 each have two sections, which are symmetrically connected to the two sides of the second arc segment 107 in sequence, and the first arc segment 107, the second arc segment 108, and the third arc segment 109 are distributed in sequence from the middle of the driving connecting plate 104 to the outer position of the driving connecting plate 104, and the heights of the top ends of the first arc segment 107, the second arc segment 108, and the third arc segment 109 are reduced in sequence, and in the above-mentioned arc segments, any two adjacent arc segments are connected by an arc transition, the side of the second arc segment 108 away from the bridge frame segment 2 is flush with the end of the first arc segment 107, and the second arc segment 108 is flush with the end of the first arc segment 107. The other side of the segment 108 extends out of the other end of the first arc segment 107, so that the second arc segment 108 and the first arc segment 107 form an L-shaped structure, and a horizontally distributed first reinforcing rib plate 110 is also arranged between a section of the second arc segment 108 extending out of the first arc segment 107 and the first protrusion 102, and the connection between the first reinforcing rib plate 110 and the second arc segment 108, the first arc segment 107, and the first protrusion 102 all adopts an arc-shaped transition connection method, and the two sides of the horizontal direction of the side where the second arc segment 108 is connected to the third arc segment 109 both extend out of the two sides of the third arc segment 109, so that the second arc segment 108 and the third arc segment 109 form a convex-shaped structure, and the connection between the third arc segment 109 and the second arc segment 108 adopts an arc-shaped transition connection method.

[0061] The driving connecting plate 104 also has a group of first connecting hole groups and a group of second connecting hole groups, wherein the first connecting hole group is composed of two first connecting holes 111 symmetrically arranged on both sides of the first protrusion 102, and the two first connecting holes 111 are respectively arranged on the two second arc segments 108, and the second connecting hole group is composed of two second connecting holes 112 symmetrically arranged on both sides of the first protrusion 102 and located on the outside of the first connecting hole group, and the two second connecting holes 112 are respectively arranged on the two third arc segments 109, and the height of the first connecting hole 111 is higher than the height of the second connecting hole 112, and the aperture of the first connecting hole 111 is larger than the aperture of the second connecting hole 112.

[0062] The side of the box section 1 away from the bridge section 2 extends out of the driving connecting plate 104, and this side of the driving connecting plate 104 is transitionally connected to the box section 1 through an inclined plate 113, and the middle position of the side where the driving connecting plate 104 is connected to the box section 1 is an arc section 114, and the opening of the arc section 114 faces upward.

[0063] A pair of through holes 120 for receiving the linkage shafts are provided on the side of the box section 1 away from the bridge section 2, and a through hole 121 for receiving the plug cover is provided on a side of the box section 1 adjacent to the bridge section 2.

[0064] The cross-section of the bridge frame section 2 is in an arc shape, and a third installation cavity 201 is provided in the middle position of the bridge frame section 2 for accommodating the installation of a brake disc and penetrating the entire bridge frame section from top to bottom, and the third installation cavity 201 is communicated with the first installation cavity 101, and at the same time, a cutout 202 is provided in the upper position of the bridge frame section 2 for accommodating the installation of a brake disc friction plate, and a second protrusion 203 protruding upward is provided at the middle position of the cutout 202 of the bridge frame section 2 located on the side close to the box section 1, and the second protrusion 203 is connected to the first protrusion 102 in an arc-shaped transition, and an embedding groove 204 is provided on the side of the second protrusion 203 away from the box section 1 for accommodating the embedding installation of the brake disc friction plate.

[0065] The cross section of the embedding groove 204 is in the shape of a right-angled trapezoid, and the right angles of the embedding groove 204 are all located on the upper side, and the size of the bottom edge of the embedding groove 204 located on the inner side is smaller than the size of the bottom edge of the embedding groove 204 located on the outer side. The design of the embedding groove 204 adopts a right-angled trapezoidal design, so that when the brake disc friction pad is installed, the side end of the brake disc friction pad is guided and positioned and fixed, so that the installation of the brake disc friction pad can be completed by only fixing the other side of the brake disc friction pad, without fixing both sides of the brake disc friction pad, which is very convenient.

[0066] A pair of symmetrically distributed third protrusions 205 are arranged at the incision 202 on both sides of the second protrusion 203, and a downwardly recessed first groove 206 is also arranged at the third protrusion 205 on the bridge section 2, and an arc-shaped transition is provided between the third protrusion 205 and the first groove 206, and a second groove 207 recessed toward the inside of the bridge section 2 is provided on the side of the first groove 206 away from the third protrusion 205, and the second groove 207 is located on the side of the first groove 206 away from the second protrusion 203, and the height of the bottom end point of the second groove 207 is lower than the height of the bottom end point of the first groove 206.

[0067] There is also a fourth protrusion 208 protruding upward in the middle position of the side of the bridge section 2 away from the box section 1. The fourth protrusion 208 is L-shaped and has a mounting hole 209 that horizontally penetrates the fourth protrusion 208. The mounting hole 209 cooperates with the embedding groove 204 to realize the installation of the brake disc friction plate.

[0068] A first weight-reducing groove 210 and a second weight-reducing groove 211 are respectively provided on the upper and lower sides of the bridge section 2 away from the box section 1, wherein there are two first weight-reducing grooves 210, which are symmetrically distributed on both sides of the fourth protrusion 208, and the cross section of the second weight-reducing groove 211 is arc-shaped, and a reinforcing rib 212 is also installed in the second weight-reducing groove 211, and a pair of symmetrically distributed positioning grooves 213 are also provided on both sides of the second weight-reducing groove 211 on the bottom surface of the bridge section 2. The design of the first weight-reducing groove 210 and the second weight-reducing groove 211 on the upper and lower sides of the bridge section 2 is to reduce the overall weight of the bridge section 2 on the basis of ensuring the structural strength of the bridge section 2, and further reduce the weight of the clamp body, and the setting of the reinforcing rib 212 is to strengthen the structural strength of the second weight-reducing groove 211.

[0069] There is also an avoidance groove 213 on both sides of the upper end surface of the bridge section 2 on the side close to the box section 1. The first avoidance groove 213 is rectangular, and one side of the first avoidance groove 213 extends outside the bridge section 2, and the other three sides are connected to the upper end surface of the bridge section 2 by a bevel transition method.

[0070] A avoidance hole 214 is also provided on both sides of the bridge section 2 away from the box section 1. The avoidance hole 214 is triangular in shape. The avoidance groove 213 and the avoidance hole 214 on the bridge section 2 are provided to leave installation space for other parts of the car as much as possible when the caliper is installed, so as to facilitate the installation of other parts.

[0071] A first screw hole 221 and a second screw hole 222 for screw embedding and installation are provided on one side of the bridge section 2 close to the box section 1 , and the first screw hole 221 and the second screw hole 222 are located on both sides of the box section 1 .

[0072] The caliper body structure of the present invention improves the traditional caliper body structure. On the basis of satisfying the overall structural strength of the caliper body, the overall size of the caliper body is reduced as much as possible through the mutual cooperation between different structures such as different protrusion structures, arc segment structures, groove structures, arc transition connection structures, etc., which facilitates the installation of the caliper body and avoids the caliper body interfering with the installation of other parts of the automobile.

[0073] The brake disc 4 is installed in the third installation cavity 201, and a brake disc friction plate 41 is installed on the upper end of the brake disc 4. One side of the brake disc friction plate 41 has a protruding embedding block, and the embedding block is embedded in the embedding groove 204 of the second protrusion 203. A pair of limiting plates 43 are also arranged on both sides of the embedding block on the brake disc friction plate 41. The limiting plates 43 are L-shaped plates, and a gap is left between the limiting plates 43 and the embedding block. Therefore, after the embedding block is embedded in the embedding groove 204, the two limiting plates 43 are located on the two outer sides of the second protrusion 203, and the other side of the brake disc friction plate 41 is fixed to the fourth protrusion 20 by a pin shaft 42. 8, its fixing structure is specifically as follows: a fixing plate extending outward is provided on the other side of the brake disc friction plate 41, a through hole for allowing the fourth protrusion 208 to pass through is provided in the middle position of the fixing plate, and a groove for allowing the pin shaft 42 to be embedded in the middle position of the fixing plate and recessed in the direction of the bridge frame section 2. During installation, after the fourth protrusion 208 passes through the through hole on the fixing plate, the side end of the fixing plate is supported on the end of the fourth protrusion 208, and then the brake disc friction plate 41 is fixed by passing the pin shaft 42 through the mounting hole 209 on the fourth protrusion 208. At this time, the pin shaft 42 is just embedded in the groove on the fixing plate.

[0074] like Figure 8-Figure 10 As shown in the schematic diagram, the linkage device 5 includes

[0075] A pair of linkage shafts extending horizontally into the caliper body are respectively a driving shaft and a driven shaft. A through hole for embedding and installing the driving shaft and the driven shaft is provided at the end of the caliper body 3. A driving shaft mounting seat 504 and a driven shaft mounting seat 503 are provided between the driving shaft, the driven shaft and the through hole. The side of the driving shaft and the driven shaft extending into the caliper body 3 is connected to the brake disc 4.

[0076] The other side of the driving shaft and the driven shaft extends out of the caliper body 3, and a driving sprocket 502 and a driven sprocket 501 are respectively mounted on the section of the driving shaft and the driven shaft extending out of the caliper body, and the driving sprocket 502 and the driven sprocket 501 are linked by a linkage chain 503.

[0077] A protective cover is mounted on the outer side of the driving sprocket 502, the driven sprocket 501, and the linkage chain 503, and the protective cover includes a base 505 fixed to the end of the caliper body 3 by bolts, and a first cavity 506 for installing the driving sprocket 502, the driven sprocket 501, and the linkage chain 503 is provided in the base 505, and a driving sprocket protective cover 507, a driven sprocket protective cover 509, and an upper layer 501 extending outward on the side of the base 505 away from the caliper body 3. The chain protection cover 508 and the lower chain protection cover 510 respectively have a driving sprocket installation cavity, a driven sprocket installation cavity, an upper chain installation cavity, and a lower chain installation cavity connected to the first cavity 506 in the driving sprocket protection cover 507, the driven sprocket protection cover 509, the upper chain protection cover 508, and the lower chain protection cover 510, and the driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity are connected to each other.

[0078] The upper chain protection cover 508 and the upper chain installation cavity are in a corresponding V-shape, and the height of the upper end point of the upper chain installation cavity is lower than the height of the upper end points of the driving sprocket installation cavity and the driven sprocket installation cavity. The lower chain protection cover 510 and the lower chain installation cavity are in a corresponding straight shape, and the two sides of the lower chain protection cover 510 are respectively connected to the driving sprocket protection cover 507 and the driven sprocket protection cover 509 in an arc transition, and the height of the lower end point of the lower chain installation cavity is higher than the height of the lower end point of the driving sprocket installation cavity and the driven sprocket installation cavity. The upper end point of the upper chain installation cavity and the lower end point of the lower chain installation cavity are controlled to achieve the tensioning of the linkage chain 503, ensuring the linkage of the linkage chain 503 to the driving shaft and the driven shaft.

[0079] A plurality of first reinforcing ribs 511 protruding outward are also provided on the outside of the base 505, and the first reinforcing ribs 511 extend along the outer edge of the base 505. A plurality of second reinforcing ribs 512 are also provided on the base 505 between the first reinforcing ribs 511 and the driving sprocket protective cover 507, the driven sprocket protective cover 509, the upper chain protective cover 508, and the lower chain protective cover 510. At least one third reinforcing rib 513 is also provided between the upper chain protective cover 508 and the lower chain protective cover 510. The first reinforcing ribs 511, the second reinforcing ribs 512, and the third reinforcing ribs 513 are provided to strengthen the structure of the protective cover and improve the structural strength of the protective cover.

[0080] The base 505 is also provided with a weight-reducing groove 514, which is divided into a plurality of weight-reducing grooves by the second reinforcing rib plate 512. The design of the weight-reducing groove 514 on the base 505 reduces the overall weight of the base 505 while ensuring the structural strength of the base 505, thus providing a good foundation for reducing the weight of the entire brake.

[0081] A sealing ring 514 is also provided between the base 505 and the caliper body 3, and a second cavity 515 is provided in the base 505 for embedding and installing the sealing ring 514, and the second cavity 515 is located outside the first cavity 506. The sealing ring 514 provided between the base 505 and the caliper body 4 plays a role of sealing protection, preventing external dust from entering the base 505 through the gap between the base 505 and the caliper body 4, thereby affecting the operation of the linkage device.

[0082] A partition plate 516 is also installed in the first cavity 506 on the base 505, and the partition plate 516 is located between the driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity. The partition plate 516 is designed to separate the upper layer from the lower layer of the linkage chain 503 to avoid mutual influence between the upper chain and the lower chain during operation, thereby ensuring the smooth operation of the linkage chain 503.

[0083] The driving sprocket protective cover 507 is also provided with a through hole 517 for allowing the driving shaft to pass through. After the driving shaft passes through the through hole 517, a torque protector 518 is connected to the end of the driving shaft on this side. A dust cap 219 is also provided on the outer side of the torque protector 518. The dust cap 219 is also provided to protect the torque protector 518 to prevent external dust from adhering to the torque protector 518 and affecting the use of the torque protector 518.

[0084] The linkage device of the present invention improves the traditional protective cover by cooperating with the base 505, the driving sprocket protective cover 507, the driven sprocket protective cover 509, the upper chain protective cover 508, and the lower chain protective cover 510. While protecting the driving sprocket 502, the driven sprocket 501, and the linkage chain 503, the volume of the entire protective cover is greatly reduced, and the installation space of the protective cover is correspondingly reduced, which facilitates the smooth installation of other components.

[0085] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pneumatic disc brake, characterized in that: Including caliper body, brake disc, and linkage device; The clamp body comprises a clamp body main body, and the clamp body main body is formed by connecting a box section and a bridge section; The box section is rectangular in shape, with a first installation cavity in the box section, and a first protrusion protruding upward is provided in the middle of the upper end surface of the box section, so that the entire box section is in the shape of a convex letter, and arc-shaped transition connections are adopted between the two sides of the first protrusion and the box section, and a driving connecting plate is provided on the side of the box section away from the bridge section, and an arc-shaped transition connection is adopted between the driving connecting plate and the box section, and the upper end surface of the first protrusion is an arc surface, and the height of the side of the first protrusion close to the driving connecting plate is higher than the height of the side of the first protrusion close to the bridge section, and a pair of symmetrically distributed protrusions are also provided at both ends of the side of the first protrusion close to the bridge section, and an arc-shaped transition connection is adopted between the protrusion and the first protrusion, and a second installation cavity is also opened on the first protrusion, and one side of the second installation cavity extends out of the first protrusion, and the other side is connected to the first installation cavity; The driving connecting plate is stepped, including a first arc segment, a second arc segment, and a third arc segment, wherein the first arc segment is connected to the first protrusion, the second arc segment and the third arc segment each have two segments, and are symmetrically connected in sequence, and the first arc segment, the second arc segment, and the third arc segment are distributed in sequence from the middle of the driving connecting plate to the outer position of the driving connecting plate, and the heights of the first arc segment, the second arc segment, and the third arc segment decrease in sequence, and the two adjacent arc segments are connected by arc transitions, and the second arc segment is far away from the bridge segment. One side is flush with the end of the first arc segment, the other side of the second arc segment extends out of the first arc segment, a horizontally distributed first reinforcing rib plate is further provided between a section of the second arc segment extending out of the first arc segment and the first protrusion, and the connections between the first reinforcing rib plate and the second arc segment, the first arc segment, and the first protrusion are all connected by arc transition, both sides of the horizontal direction of the side where the second arc segment is connected to the third arc segment are extended out of the third arc segment, and the connection between the third arc segment and the second arc segment is all connected by arc transition; The driving connecting plate is also provided with a first connecting hole group and a second connecting hole group, wherein the first connecting hole group is composed of two first connecting holes symmetrically arranged on both sides of the first protrusion, and the two first connecting holes are respectively arranged on the two second arc segments, and the second connecting hole group is composed of two second connecting holes symmetrically arranged on both sides of the first protrusion and located outside the first connecting hole group, and the two second connecting holes are respectively arranged on the two third arc segments, and the height of the first connecting hole is higher than the height of the second connecting hole; The side of the box section away from the bridge section extends out of the driving connection plate, and the side of the driving connection plate is transitionally connected to the box section via an inclined plate, and the middle position of the side where the driving connection plate is connected to the box section is an arc section, and the opening of the arc section faces upward; The cross section of the bridge frame section is in an arc shape, and a third installation cavity is provided in the middle position of the bridge frame section, which is used to install a brake disc and runs through the entire bridge frame section from top to bottom, and the third installation cavity is connected to the first installation cavity. At the same time, a cutout is provided in the upper position of the bridge frame section, and a second protrusion protruding upward is provided in the middle position of the cutout of the bridge frame section, which is located close to the box section. The second protrusion is connected to the first protrusion in an arc shape, and an embedding groove is provided on the side of the second protrusion away from the box section, and the friction plate of the brake disc is embedded and installed; The cross section of the embedding groove is in the shape of a right-angled trapezoid, and the right angles of the embedding groove are all located on the upper side, and the size of the bottom edge of the embedding groove located on the inner side is smaller than the size of the bottom edge of the embedding groove located on the outer side; A pair of symmetrically distributed third protrusions are provided at the cutouts on both sides of the second protrusion, a downwardly concave first groove is also provided at the third protrusion on the bridge section, and an arc-shaped transition is formed between the third protrusion and the first groove, and a second groove is also provided on a side of the first groove away from the third protrusion and concave toward the inside of the bridge section, the second groove is located on a side of the first groove away from the second protrusion, and the height of the bottom end point of the second groove is lower than the height of the bottom end point of the first groove; A fourth protrusion protruding upward is also provided at the middle position of the side of the bridge section away from the box section, the fourth protrusion is L-shaped, and a mounting hole is provided on the fourth protrusion and horizontally penetrates the fourth protrusion, and the mounting hole cooperates with the embedding groove to realize the installation of the brake disc friction plate; The bridge section is provided with a first weight-reducing groove and a second weight-reducing groove on the upper and lower sides of the side away from the box section, respectively. There are two first weight-reducing grooves, which are symmetrically distributed on both sides of the fourth protrusion. The cross section of the second weight-reducing groove is arc-shaped. A reinforcing rib is installed in the second weight-reducing groove. A pair of symmetrically distributed positioning grooves are also provided on the bottom surface of the bridge section on both sides of the second weight-reducing groove. The connection between the box section and the bridge section adopts an arc transition connection; The brake disc is installed in the third installation cavity, and a brake disc friction plate is installed on the upper end of the brake disc, one side of the brake disc friction plate is embedded in the embedding groove of the second protrusion, and the other side of the brake disc friction plate is fixed to the fourth protrusion through a pin shaft; The linkage device includes a pair of linkage shafts extending horizontally into the caliper body, which are respectively a driving shaft and a driven shaft. The end of the caliper body is also provided with a through hole for embedding and installing the driving shaft and the driven shaft. The driving shaft and the driven shaft are connected to the brake disc. One side of the driving shaft and the driven shaft extends out of the caliper body, and a driving sprocket and a driven sprocket are respectively mounted on the driving shaft and the driven shaft extending out of the caliper body, and the driving sprocket and the driven sprocket are linked by a linkage chain; A protective cover is mounted on the outer side of the driving sprocket, the driven sprocket and the linkage chain, the protective cover includes a base fixed to the end of the caliper body by bolts, the base has a first cavity for installing the driving sprocket, the driven sprocket and the linkage chain, and the base has a driving sprocket protective cover, a driven sprocket protective cover, an upper chain protective cover and a lower chain protective cover extending outward on the side of the base away from the caliper body, and the driving sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover and the lower chain protective cover respectively have a driving sprocket installation cavity, a driven sprocket installation cavity, an upper chain installation cavity and a lower chain installation cavity connected to the first cavity, and The driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity are interconnected, the upper chain protection cover and the upper chain installation cavity are in a V-shape corresponding to each other, and the height of the upper end point of the upper chain installation cavity is lower than the height of the upper end point of the driving sprocket installation cavity and the driven sprocket installation cavity, the lower chain protection cover and the lower chain installation cavity are in a corresponding straight shape, and the two sides of the lower chain protection cover are respectively connected to the driving sprocket protection cover and the driven sprocket protection cover in an arc-shaped transition, and the height of the lower end point of the lower chain installation cavity is higher than the height of the lower end point of the driving sprocket installation cavity and the driven sprocket installation cavity; The driving sprocket protective cover is also provided with a through hole for allowing the driving shaft to pass through. After the driving shaft passes through the through hole, a torque protector is connected to the end of the driving shaft on this side, and a dust cap is also mounted on the outer side of the torque protector. A partition plate is also installed in the first cavity on the base, and the partition plate is located between the driving sprocket installation cavity, the driven sprocket installation cavity, the upper chain installation cavity, and the lower chain installation cavity; The outer side of the base is also provided with a plurality of first reinforcing ribs protruding outward, the first reinforcing ribs extend along the outer edge of the base, and a plurality of second reinforcing ribs are also provided on the base between the first reinforcing ribs and the active sprocket protective cover, the driven sprocket protective cover, the upper chain protective cover, and the lower chain protective cover, and at least one third reinforcing rib is also provided between the upper chain protective cover and the lower chain protective cover; A sealing ring is also arranged between the base and the pliers body, and a second cavity for embedding and installing the sealing ring is provided in the base, and the second cavity is located outside the first cavity.

2. The pneumatic disc brake according to claim 1, characterized in that: The bridge section also has an avoidance groove on both sides of the upper end surface of one side close to the box section.

3. The pneumatic disc brake according to claim 1, characterized in that: The two sides of the bridge section away from the box section are respectively provided with an avoidance hole, and the avoidance hole is in a triangular shape.

4. The pneumatic disc brake according to claim 1, characterized in that: The base is also provided with a weight-reducing groove.

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