Friction plate driving assembly

Abstract

The utility model provides a friction plate driving assembly which comprises a shell, a friction plate driving assembly and a friction plate driving assembly. A return mechanism; one end of the driving mechanism is arranged in the containing groove, the other end of the driving mechanism extends to the opening of the containing groove and is matched with one end of the return mechanism, the end, away from the driving mechanism, of the return mechanism is used for being connected with a friction plate, and the driving mechanism is used for driving the friction plate to extend out along the opening of the containing groove. And along with the return of the driving mechanism, the return mechanism can drive the friction plate to retract along the opening of the accommodating groove. According to the friction plate driving assembly provided by the embodiment of the utility model, the braked friction plate can be actively separated from the brake disc, and the problems of dragging and abrasion of parts are avoided, so that the energy consumption and the loss of a part structure are reduced.

Description

Technical Field

[0001] The utility model relates to the field of disc brakes, in particular to a friction plate driving assembly. Background Art

[0002] In current automotive disc brakes, the friction plate and the drive mechanism are mostly separated. After braking, the drive mechanism cannot drive the friction plate back to its position, and the friction plate and brake disc cannot be actively separated. The brake disc can only be separated from the two friction plates through the rotation and impact of the brake disc, which causes the friction plate and brake disc in the brake to drag and wear, easily causing unnecessary energy consumption and component loss. Utility Model Content

[0003] In view of this, the utility model provides a friction plate driving assembly, which can actively separate the friction plate from the brake disc after braking.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The friction plate drive assembly according to the embodiment of the utility model comprises:

[0006] A housing, wherein a receiving groove is formed on one side surface of the housing;

[0007] Return mechanism;

[0008] A driving mechanism, one end of the driving mechanism is arranged in the accommodating groove, and the other end extends to the opening of the accommodating groove and cooperates with one end of the return mechanism, and the end of the return mechanism away from the driving mechanism is used to connect the friction plate, and the driving mechanism is used to drive the friction plate to extend along the opening of the accommodating groove, and as the driving mechanism returns, the return mechanism can drive the friction plate to retract along the opening of the accommodating groove.

[0009] Furthermore, a pair of parallel piston grooves are formed at the bottom of the receiving groove.

[0010] The driving mechanism comprises a pair of pistons, and the pair of pistons are axially movably arranged in a pair of piston grooves, and one end of the pair of pistons close to the outlet of the piston groove is matched with one end of the return mechanism.

[0011] Furthermore, an oil inlet passage is provided inside the housing, and the oil inlet passage is connected to the bottom of a pair of piston grooves.

[0012] The oil is supplied / recovered into / from the pair of piston grooves through the oil inlet passage to drive the pair of pistons to extend / retract along the axial direction of the piston grooves.

[0013] Furthermore, a connecting oil passage is provided inside the housing, and the connecting oil passage is provided between the bottoms of the pair of piston grooves to connect the pair of piston grooves.

[0014] Furthermore, a first annular groove is formed on the inner side walls of the pair of piston grooves respectively.

[0015] A pair of sealing rings are respectively arranged in the first annular grooves, and each of the sealing rings is respectively sleeved on the outer side wall of the corresponding piston.

[0016] Further, the cross section of the first annular groove perpendicular to the axial direction is a trapezoid, and the width of the bottom edge of the first annular groove on one side close to the piston groove is greater than the width of the bottom edge on the other side away from the piston groove.

[0017] The pair of first annular grooves are respectively arranged at the same axial position in the pair of piston grooves.

[0018] Furthermore, a pair of pistons are respectively formed with connecting cavities opening in the same direction as the pair of piston grooves.

[0019] The return mechanism comprises a pair of spring plates, one end of the pair of spring plates is used to connect the friction plates respectively, and the other end is respectively embedded in the connecting cavities inside the pair of pistons.

[0020] Furthermore, one end of the connecting cavity close to the bottom of the piston groove is closed, and one end away from the bottom of the piston groove is open.

[0021] Furthermore, a second annular groove is formed on the inner side wall of the connecting cavity of the pair of pistons, and a limiting portion is formed at both axial ends of each second annular groove.

[0022] A pair of the spring sheets have one end away from the friction plate and is formed with a relatively inwardly turned folded edge, and the corners of the folded edges of the pair of the spring sheets are respectively abutted against the limiting portions in the corresponding second annular grooves close to the opening of the connecting cavity.

[0023] Furthermore, an exhaust pipeline is also provided inside the shell, and the exhaust pipeline is connected to the bottom of a pair of piston grooves.

[0024] The above technical solution of the utility model has at least one of the following beneficial effects:

[0025] According to the friction plate driving assembly of the utility model, a receiving groove opening toward one side is arranged inside one side of the housing, and a driving mechanism is arranged in the receiving groove, and one end of the driving mechanism close to the opening of the receiving groove is connected with a return mechanism, and the other end of the return mechanism is used to connect the friction plate. The driving mechanism controls the friction plate to extend along the opening of the receiving groove, and controls the drive mechanism to retract to drive the return mechanism to retract, and then the return mechanism drives the friction plate to retract along the opening of the receiving groove. In this way, the friction plate can be actively separated from the brake disc after braking, avoiding the problems of dragging and component wear, thereby reducing energy consumption and component structure loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural diagram of the friction plate driving assembly of the embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the exploded structure of the friction plate drive assembly of the embodiment of the utility model;

[0028] Figure 3 It is a front view of the housing in the friction plate drive assembly of the embodiment of the utility model;

[0029] Figure 4 for Figure 3 A three-dimensional structural diagram of the shell after cutting along the AA direction;

[0030] Figure 5 It is a schematic diagram of the assembly of the driving mechanism in the friction plate driving assembly of the embodiment of the utility model.

[0031] Reference numerals: 100. housing; 110. accommodating groove; 111. piston groove; 112. first annular groove; 120. oil inlet; 130. connecting oil passage; 140. exhaust pipe;

[0032] 200. driving mechanism; 210. piston; 211. connecting chamber; 212. second annular groove; 220. sealing ring;

[0033] 300. Return mechanism;

[0034] 400. Friction plate;

[0035] 500. Guide assembly; 510. Slide rail; 520. Slide plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0038] The friction plate drive assembly according to the embodiment of the utility model is first described in detail below with reference to the accompanying drawings.

[0039] According to the friction plate drive assembly of the embodiment of the utility model, Figure 1 , Figure 2 As shown, it may include: a housing 100 , a driving mechanism 200 and a return mechanism 300 .

[0040] A receiving groove 110 is formed on one side surface of the housing 100 .

[0041] One end of the driving mechanism 200 is disposed in the accommodating groove 110, and the other end extends to the opening of the accommodating groove 110 and cooperates with one end of the return mechanism 300. The end of the return mechanism 300 away from the driving mechanism 200 is used to connect the friction plate 400. The driving mechanism 200 is used to drive the friction plate 400 to extend along the opening of the accommodating groove 110, and as the driving mechanism 200 returns, the return mechanism 200 can drive the friction plate 400 to retract along the opening of the accommodating groove 110.

[0042] Specifically, according to the friction plate driving assembly of the embodiment of the utility model, a receiving groove 110 opening toward one side is provided inside a side surface of the housing 100, and a driving mechanism 200 is provided in the receiving groove 110, and one end of the driving mechanism 200 close to the opening of the receiving groove 110 is connected with a return mechanism 300, and the other end of the return mechanism 300 is used to connect the friction plate 400. The driving mechanism 200 controls and pushes the friction plate 400 to extend along the opening of the receiving groove 110, and controls the driving mechanism 200 to retract so as to drive the return mechanism 300 to retract, and then the return mechanism 300 drives the friction plate 400 to retract along the opening of the receiving groove 110.

[0043] This enables the friction pad to be actively separated from the brake disc after braking, avoiding problems such as dragging and component wear, thereby reducing energy consumption and component structure loss.

[0044] In some embodiments, Figure 2 As shown, a pair of parallel piston grooves 111 are formed at the bottom of the accommodating groove 110 .

[0045] The driving mechanism 200 includes a pair of pistons 210 , which are axially movable in a pair of piston grooves 111 , and one end of the pair of pistons 210 close to the outlet of the piston groove 111 cooperates with one end of the return mechanism 300 .

[0046] That is to say, a pair of piston grooves 111 are arranged at the bottom of the accommodating groove 110 to respectively arrange the piston 210, one end of the piston 210 is exposed from the piston groove 111 and cooperates with the return mechanism 300 to connect the friction plate 400, so that the piston 210 in the piston groove 111 is hydraulically driven to move axially in the piston groove 111 to drive the friction plate 400 to extend or retract in the accommodating groove 110. The structure is simple and compact, easy to disassemble and maintain, and the driving is stable and reliable.

[0047] In some embodiments, an oil inlet 120 is disposed inside the housing 100 , and the oil inlet 120 is connected to the bottom of the pair of piston grooves 111 .

[0048] The oil is supplied / recovered into / from the pair of piston grooves 111 through the oil inlet passage 120 to drive the pair of pistons 210 to extend / retract along the axial direction of the piston grooves 111 .

[0049] As an example, Figure 2 , Figure 3 as well as Figure 4As shown, an oil inlet 120 is provided on the housing 100 in a path direction from the outer wall of the housing 100 to the inside of the housing 100, and the oil inlet 120 is connected to the bottom of a pair of piston grooves 111 to supply oil to the bottom of the piston groove 111. When working, the oil applies pressure to the bottom of the piston 210 to push the piston 210 to move, thereby driving the friction plate 400 at the other end of the piston 210 to extend, and in the non-working state, the oil is recovered outward through the oil inlet 120 to reduce the pressure of the bottom space of the piston groove 111, and the piston 210 retracts to drive the return mechanism 300 and the friction plate 400 at the other end to return.

[0050] In some embodiments, a communication oil passage 130 is further disposed inside the housing 100 . The communication oil passage 130 is disposed between the bottoms of the pair of piston grooves 111 to connect the pair of piston grooves 111 .

[0051] As an example, Figure 4 As shown, a connecting oil path 130 connecting a pair of piston grooves 111 is provided between the bottoms of a pair of piston grooves 111, and the oil inlet path 120 is connected to the bottom of one of the piston grooves 111. Therefore, when supplying oil to the two piston grooves 111, it is only necessary to supply the piston groove 111 at one end through the oil inlet path, and the oil in the piston groove 111 at one end can flow into the piston groove 111 at the other end through the connecting oil path 130, thereby realizing the supply of oil to a pair of piston grooves 111 through a single oil inlet path. Compared with separately setting connecting oil inlets for each piston groove 111, the internal structure of the housing is effectively simplified, and the oil supply is more efficient.

[0052] In addition, the setting of the connecting oil path 130 makes the supply oil pressure in the two piston grooves 111 relatively flat, which effectively improves the relative stability of the pair of pistons 210 during movement, thereby ensuring the driving reliability of the friction plate 400.

[0053] In some embodiments, Figure 2 , Figure 4 and Figure 5 As shown, first annular grooves 112 are respectively formed on the inner side walls of a pair of piston grooves 111 .

[0054] A sealing ring 220 is disposed in each of the pair of first annular grooves 112 , and each sealing ring 220 is sleeved on the outer side wall of the corresponding piston 210 .

[0055] That is to say, a first annular groove 112 is respectively opened on the inner wall of a pair of piston grooves 111, and a sealing ring 220 is arranged in the first annular groove 112. The sealing ring 220 is sleeved on the outer wall of each corresponding piston 210, thereby sealing the oil in the piston groove 111 and improving the driving stability.

[0056] In some embodiments, a cross section of the first annular groove 112 perpendicular to the axial direction is trapezoidal, and a bottom width of the first annular groove 112 on one side close to the piston groove 111 is greater than a bottom width on the other side away from the piston groove 111 .

[0057] The pair of first annular grooves 112 are respectively disposed in the pair of piston grooves 111 at the same axial position.

[0058] That is to say, the opening of the first annular groove 112 gradually increases from the inside to the direction close to the piston groove 111, and the opening on the end close to the piston groove 111 is larger, so that when the piston 210 moves, there is space for the corresponding side of the sealing ring 220 (i.e., the side close to the piston groove 111) to deform.

[0059] In some embodiments, Figure 2 , Figure 5 As shown, a pair of pistons 210 are respectively formed with connecting cavities 211 opening in the same direction as the pair of piston grooves 111 .

[0060] The return mechanism 300 includes a pair of spring plates, one end of which is used to connect to the friction plate 400 respectively, and the other end of which is respectively embedded in the connecting cavity 211 inside the pair of pistons 210 .

[0061] That is to say, a connecting cavity 211 opening in the same direction as the piston groove 111 is set inside a pair of pistons 210, and a spring piece 230 is embedded inside the pair of connecting cavities 211 to connect the piston 210 and the friction plate 400, so that the connection between the piston 210 and the friction plate 400 is convenient and reliable, and easy to disassemble.

[0062] In some embodiments, Figure 2 As shown, one end of the connecting cavity 211 close to the bottom of the piston groove 111 is closed, and one end away from the bottom of the piston groove 111 is open.

[0063] Therefore, the spring piece 230 can be embedded in the piston 210 and stably connected to the piston 210 to prevent the spring piece 230 from moving.

[0064] In some embodiments, Figure 2 , Figure 5 As shown, a second annular groove 212 is formed on the inner side wall of the connecting cavity 211 of the pair of pistons 210, and a limiting portion is formed at both axial ends of each second annular groove 212.

[0065] A pair of spring sheets have one end away from the friction plate 400 formed with relatively inwardly turned edges, and the corners of the folded edges of the pair of spring sheets respectively abut against the limiting portions of the openings of the connecting cavity 211 in the corresponding second annular grooves 212 .

[0066] That is, when the pair of pistons 210 extend, the corners of the folded edges of the pair of spring sheets in the connecting chamber 211 abut against the ends of the second annular groove 212 away from the opening of the connecting chamber 211 to limit the position of the spring sheets. When the pair of pistons 210 are retracted, the corners of the folded edges of the pair of spring sheets in the connecting chamber 211 abut against the ends of the second annular groove 212 close to the opening of the connecting chamber 211 to reliably pull back the friction plate 400.

[0067] In some embodiments, an exhaust pipe 140 is further disposed inside the housing 100 , and the exhaust pipe 140 is connected to the bottom of the pair of piston grooves 111 .

[0068] As an example, Figure 4 , Figure 5 As shown, exhaust pipes 140 communicating with the bottom of the piston grooves 111 are respectively provided at both ends of the bottom of the pair of piston grooves 111 , so as to facilitate the exhaust of air inside the piston grooves 111 .

[0069] In addition, if Figure 1 , Figure 2 As shown, the friction plate driving assembly according to the embodiment of the utility model also includes a guide assembly 500, which may include a slide rail 510 and a slide plate 520. The slide rail 510 is connected to the two side ends inside the accommodating groove 110, and the slide plate 520 is used to be installed on the two side ends of the friction plate 400. The slide plate 520 is movably arranged inside the slide rail 510, thereby guiding the extension and retraction of the friction plate 400, thereby improving the reliability of braking.

[0070] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A friction plate drive assembly, characterized in that: include: A housing, wherein a receiving groove is formed on one side surface of the housing; Return mechanism; A driving mechanism, one end of the driving mechanism is arranged in the accommodating groove, and the other end extends to the opening of the accommodating groove and cooperates with one end of the return mechanism, and the end of the return mechanism away from the driving mechanism is used to connect the friction plate, and the driving mechanism is used to drive the friction plate to extend along the opening of the accommodating groove, and as the driving mechanism returns, the return mechanism can drive the friction plate to retract along the opening of the accommodating groove.

2. The friction plate drive assembly according to claim 1, characterized in that: A pair of parallel piston grooves are formed at the bottom of the accommodating groove. The driving mechanism comprises a pair of pistons, and the pair of pistons are axially movably arranged in a pair of piston grooves, and one end of the pair of pistons close to the outlet of the piston groove is matched with one end of the return mechanism.

3. The friction plate drive assembly according to claim 2, characterized in that: An oil inlet passage is provided inside the housing, and the oil inlet passage is connected to the bottom of a pair of piston grooves. The oil is supplied / recovered into / from the pair of piston grooves through the oil inlet passage to drive the pair of pistons to extend / retract along the axial direction of the piston grooves.

4. The friction plate drive assembly according to claim 3, characterized in that: A communication oil passage is also provided inside the housing, and the communication oil passage is provided between the bottoms of the pair of piston grooves to communicate with the pair of piston grooves.

5. The friction plate drive assembly according to claim 3, characterized in that: A first annular groove is formed on the inner side walls of the pair of piston grooves respectively. A pair of sealing rings are respectively arranged in the first annular grooves, and each of the sealing rings is respectively sleeved on the outer side wall of the corresponding piston.

6. The friction plate drive assembly according to claim 5, characterized in that: The cross section of the first annular groove perpendicular to the axial direction is a trapezoid, and the width of the bottom edge of the first annular groove on one side close to the piston groove is greater than the width of the bottom edge on the other side away from the piston groove. The pair of first annular grooves are respectively arranged at the same axial position in the pair of piston grooves.

7. The friction plate drive assembly according to claim 5, characterized in that: A pair of pistons are respectively formed with connecting cavities opening in the same direction as the pair of piston grooves. The return mechanism comprises a pair of spring plates, one end of the pair of spring plates is used to connect the friction plates respectively, and the other end is respectively embedded in the connecting cavities inside the pair of pistons.

8. The friction plate drive assembly according to claim 7, characterized in that: The connecting cavity is closed at one end close to the bottom of the piston groove, and is open at one end away from the bottom of the piston groove.

9. The friction plate drive assembly according to claim 8, characterized in that: A second annular groove is formed on the inner side wall of the connecting cavity of the pair of pistons, and each of the second annular grooves has a limiting portion formed at both axial ends. A pair of the spring sheets have one end away from the friction plate and is formed with a relatively inwardly turned folded edge, and the corners of the folded edges of the pair of the spring sheets are respectively abutted against the limiting portions in the corresponding second annular grooves close to the opening of the connecting cavity.

10. The friction plate drive assembly according to claim 3, characterized in that: An exhaust pipeline is also provided inside the shell, and the exhaust pipeline is connected to the bottom of a pair of piston grooves.

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