Lubricating device and piston lubricating equipment of brake

Abstract

The utility model relates to the technical field of automobile parts, and provides a lubricating device and piston lubricating equipment of a brake. The lubricating device comprises a limiting seat which is connected with a rotation driving mechanism through a gear transmission assembly and operates along with the rotation driving mechanism, and the gear transmission assembly can drive the limiting seat to rotate forwards and backwards; and the lubricating tool is connected with the movable driving mechanism, and the movable driving mechanism can drive the lubricating tool to move towards the limiting seat. According to the lubricating device, the lubricating tool is driven by the movable driving mechanism to move towards the limiting seat, so that the lubricating tool is in contact with a workpiece arranged on the limiting seat, and the workpiece is lubricated; the gear transmission assembly is in transmission connection with the rotation driving mechanism and the limiting base, when the rotation driving mechanism operates, the gear transmission assembly drives a workpiece arranged on the limiting base to rotate forwards and backwards to make contact with the lubricating tool, and uniform lubricating of the workpiece is achieved; and the rotation driving mechanism always operates in the same direction, so that the driving design is simplified, and the stability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a lubricating device and a brake piston lubricating device. Background Art

[0002] In the production process of automobile parts, there are many scenarios where lubrication is required. For example, the piston is one of the core components of the hydraulic disc brake, and the piston needs to be lubricated during the assembly process.

[0003] Currently, there are two main ways to lubricate the workpiece to be lubricated. One is to apply oil manually with a handheld machine, which is inefficient and the amount of lubrication cannot be guaranteed. The other is to apply oil with equipment such as a grease injection machine and an industrial oiling machine, which has high equipment cost and complicated operation.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of this, the utility model provides a lubrication device and a brake piston lubrication device, which can automatically, comprehensively and efficiently realize lubrication operation through a device with a simple structure.

[0006] One aspect of the utility model provides a lubrication device, comprising: a limit seat, which is connected to a rotating drive mechanism through a gear transmission assembly, and as the rotating drive mechanism runs, the gear transmission assembly can drive the limit seat to rotate forward and reverse; a lubrication tool, which is connected to a moving drive mechanism, and the moving drive mechanism can drive the lubrication tool to move toward the limit seat.

[0007] The lubrication device of the utility model is provided with a limit seat for placing a workpiece to be lubricated; a lubrication tool is driven to move toward the limit seat by a mobile driving mechanism, so that the lubrication tool contacts the workpiece placed on the limit seat, so as to lubricate the workpiece; a rotation driving mechanism and the limit seat are connected by a gear transmission assembly, and when the rotation driving mechanism is running, the gear transmission assembly drives the workpiece placed on the limit seat to rotate forward and reverse to contact the lubrication tool, so as to achieve uniform lubrication of the workpiece; and the design of driving the limit seat forward and reverse by the gear transmission assembly allows the rotation driving mechanism to always operate in the same direction, so as to simplify the drive design and enhance the stability.

[0008] In some embodiments, the gear transmission assembly includes: a driving gear, including an outer toothed disc and an inner gear fixed on the disc surface of the outer toothed disc, the outer toothed disc and the inner gear are respectively provided with sector-shaped distributed teeth, the teeth of the outer toothed disc and the teeth of the inner gear are complementary to and do not overlap in the circumferential direction; a driven gear, rotatably arranged on the disc surface of the outer toothed disc, the driven gear selectively meshes with the outer toothed disc and the inner gear for transmission; wherein, the outer toothed disc is connected to the rotation drive mechanism, and the driven gear is connected to the limit seat.

[0009] Through the special tooth shape design of the outer gear disc and the inner gear, the driven gear can selectively mesh with the outer gear disc and the inner gear for transmission; when the inner gear meshes with the driven gear, the positive rotation of the driving gear will drive the driven gear to rotate reversely; the driving gear continues to rotate forward until the outer gear disc meshes with the driven gear (at this time the inner gear and the driven gear are disengaged), and the positive rotation of the driving gear will drive the driven gear to rotate forward, so that the rotation drive mechanism keeps rotating forward, and the driving gear can drive the limit seat to rotate reversely and forwardly for one circle, so that the lubrication of the workpiece is more uniform.

[0010] In some embodiments, the ratio of the number of teeth of the outer gear disk to the number of teeth of the driven gear is greater than or equal to 1.

[0011] In this way, during the meshing process between the outer gear disc and the driven gear, the driven gear can be driven to rotate positively for more than one circle, thereby ensuring comprehensive lubrication of the workpiece.

[0012] In some embodiments, the ratio of the number of teeth of the internal gear to the number of teeth of the driven gear is greater than or equal to 1 / 2.

[0013] In this way, during the meshing process between the internal gear and the driven gear, the driven gear can be driven to rotate forward for more than half a circle, so that the workpiece can be lubricated evenly and in place.

[0014] In some embodiments, the limiting seat includes: a limiting cavity, fixedly connected to the driven gear of the gear transmission assembly; and a clamping seat, fixed in the limiting cavity by a pin.

[0015] The holder can be used to engage and place the workpiece to be lubricated; the holder is detachably fixed in the limit cavity by a latch, and a suitable holder can be replaced according to the shape and size of the workpiece. The holder can be quickly changed by using the latch, so that the lubrication device of the utility model is suitable for a variety of different lubrication scenarios.

[0016] In some embodiments, the lubrication tool includes: a lubrication base connected to the mobile drive mechanism, the lubrication base is provided with an oil outlet hole; a porous material is sleeved on the lubrication base and receives the lubrication medium discharged from the oil outlet hole.

[0017] During the lubrication process, the lubricating medium overflows from the oil outlet hole of the lubrication base and adheres to the porous material, and the porous material contacts the part to be lubricated of the workpiece to achieve lubrication.

[0018] In some embodiments, the lubrication base is formed into a cylindrical shape including a plurality of assembly grooves, each of the assembly grooves is provided with the oil outlet hole, and the porous material is sleeved on at least one of the assembly grooves.

[0019] In this way, the porous material can be placed in a suitable assembly groove position according to lubrication needs to achieve lubrication of specific working parts.

[0020] In some embodiments, an oil inlet hole is provided at the bottom of the lubrication base, and the oil inlet hole leads to the oil outlet hole; the lubrication base is assembled on a tooling base connected to the mobile drive mechanism, and the tooling base is provided with a through hole connected to the oil inlet hole, and the oil inlet hole and the through hole are pressed together by a sealing ring.

[0021] The lubrication base with porous material is firmly connected to the mobile drive mechanism through the tooling base; the through hole of the tooling base is connected with the oil inlet hole of the lubrication base, so that the lubricating medium is transported to the oil inlet hole through the through hole; and the oil inlet hole and the through hole are sealed by a sealing ring to prevent leakage of the lubricating medium.

[0022] In some embodiments, the rotation drive mechanism is a motor, and the rotation drive mechanism is mounted on the substrate; and / or the movement drive mechanism is a cylinder, and the movement drive mechanism is mounted on the substrate via a mounting frame.

[0023] The motor is used to achieve stable rotation drive, and the cylinder is used to achieve stable movement drive.

[0024] Another aspect of the utility model provides a brake piston lubrication device, comprising: a lubrication device as described in any of the above embodiments; a piston, supported in the limit seat; wherein the mobile drive mechanism can drive the lubrication tooling to move to a position to be lubricated that contacts the piston, and the rotation drive mechanism can drive the piston to rotate forward and reverse through the gear transmission assembly to contact the lubrication tooling.

[0025] The piston lubrication equipment of the utility model is equipped with the above-mentioned lubrication device, which can stably limit the piston in the limit seat; the lubrication tooling is driven toward the limit seat by the mobile driving mechanism, so that the lubrication tooling contacts the piston for lubrication; the limit seat is driven forward and reversely by the gear transmission component along with the operation of the rotating driving mechanism, so that the piston contacts the lubrication tooling in the forward and reverse rotation to achieve uniform lubrication; and the forward and reverse rotation of the piston is achieved by the structural design of the gear transmission component, without the need to rotate the driving mechanism to change the running direction, which can simplify the drive design and enhance stability.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least:

[0027] The lubrication device of the utility model is provided with a limit seat for placing a workpiece to be lubricated; a lubrication tool is driven to move toward the limit seat by a mobile driving mechanism, so that the lubrication tool contacts the workpiece placed on the limit seat, so as to lubricate the workpiece; a rotation driving mechanism and the limit seat are connected by a gear transmission assembly, and when the rotation driving mechanism is running, the gear transmission assembly drives the workpiece placed on the limit seat to rotate forward and reverse to contact the lubrication tool, so as to achieve uniform lubrication of the workpiece; and the design of driving the limit seat forward and reverse by the gear transmission assembly allows the rotation driving mechanism to always operate in the same direction, thereby simplifying the drive design and enhancing stability.

[0028] Therefore, the lubrication device of the utility model can automatically, comprehensively and efficiently realize the lubrication operation on the workpiece through a simple structural design.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram showing the structure of the lubrication device in the embodiment of the utility model is shown;

[0032] Figure 2 A schematic diagram showing the structure of the gear transmission assembly in the embodiment of the utility model is shown;

[0033] Figure 3 A schematic diagram showing the structure of the driving gear in the embodiment of the utility model is shown;

[0034] Figure 4 A schematic diagram showing the internal gear driving the driven gear to reverse in the embodiment of the utility model;

[0035] Figure 5 A schematic diagram showing the outer gear disc driving the driven gear to rotate forward in the embodiment of the utility model;

[0036] Figure 6 A schematic diagram showing the structure of the lubrication tool in the embodiment of the utility model is shown;

[0037] Figure 7A schematic diagram showing the structure of the lubrication base in an embodiment of the utility model is shown;

[0038] Figure 8 A schematic structural diagram of a workpiece to be lubricated in an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0040] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.

[0041] In the description of the present invention, the terms "positive", "negative", "bottom", "top", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present invention, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0043] Figure 1 The structure of the lubrication device is shown in Figure 1. Figure 1 As shown, the lubrication device provided by the embodiment of the utility model includes:

[0044] The limit seat 10 is connected to the rotation drive mechanism 30 through the gear transmission assembly 20. As the rotation drive mechanism 30 operates, the gear transmission assembly 20 can drive the limit seat 10 to rotate forward and reverse;

[0045] The lubricating fixture 40 is connected to the moving driving mechanism 50 , and the moving driving mechanism 50 can drive the lubricating fixture 40 to move toward the limiting seat 10 .

[0046] The lubrication device of the utility model is provided with a workpiece 60 to be lubricated, through a limit seat 10; a lubrication tool 40 is driven to move toward the limit seat 10 by a mobile driving mechanism 50, so that the lubrication tool 40 contacts the workpiece 60 placed on the limit seat 10, so as to lubricate the workpiece 60; a rotation driving mechanism 30 and the limit seat 10 are connected by a gear transmission assembly 20, and when the rotation driving mechanism 30 is running, the gear transmission assembly 20 drives the workpiece 60 placed on the limit seat 10 to rotate forward and reverse to contact the lubrication tool 40, so as to achieve uniform lubrication of the workpiece 60; and the design that the gear transmission assembly 20 drives the limit seat 10 to rotate forward and reverse can make the rotation driving mechanism 30 always run in the same direction. For example, the rotation driving mechanism 30 can always run clockwise to simplify the drive design and enhance stability.

[0047] It should be noted that the forward rotation and reverse rotation mentioned in the present invention refer to rotation in opposite directions. For example, forward rotation refers to rotation in a clockwise direction, and reverse rotation refers to rotation in a counterclockwise direction, but the present invention is not limited thereto.

[0048] The lubrication device of the utility model can automatically, comprehensively and efficiently realize the lubrication operation on the workpiece 60 through a simple structural design.

[0049] Figure 2 The structure of the gear transmission assembly is shown schematically. Figure 3 The structure of the driving gear is shown in figure. Figure 4 It shows the state where the internal gear drives the driven gear to reverse. Figure 5 It shows the state where the outer gear plate drives the driven gear to rotate forward; combined with Figures 1 to 5 As shown, in some embodiments, the gear transmission assembly 20 includes:

[0050] The driving gear 22 includes an outer toothed disc 221 and an inner gear 222 fixed to the disc surface of the outer toothed disc 221. The outer toothed disc 221 and the inner gear 222 are respectively provided with sector-shaped distributed teeth. The teeth 221a of the outer toothed disc 221 and the teeth 222a of the inner gear 222 are complementary to each other in the circumferential direction and do not overlap.

[0051] The driven gear 23 is rotatably disposed on the disk surface of the outer toothed disk 221, and the driven gear 23 selectively meshes with the outer toothed disk 221 and the inner gear 222 for transmission;

[0052] The outer gear disc 221 is connected to the rotation driving mechanism 30 , and the driven gear 23 is connected to the limiting seat 10 .

[0053] Through the special tooth shape design of the outer toothed disc 221 and the inner gear 222, the driven gear 23 is selectively meshed with the outer toothed disc 221 and the inner gear 222 for transmission; when the inner gear 222 is meshed with the driven gear 23, the driving gear 22 rotates forward (along the Figure 4The clockwise direction R1 shown in the figure) will drive the driven gear 23 to reverse (along Figure 4 The driving gear 22 continues to rotate forward until the outer gear plate 221 is meshed with the driven gear 23 (at this time, the inner gear 222 is disengaged from the driven gear 23), and the driving gear 22 rotates forward (along the Figure 5 The clockwise direction R1 shown in the figure) will drive the driven gear 23 to rotate forward (along Figure 5 In this way, the driving mechanism 30 keeps rotating forward, and the driving gear 22 rotates forward one circle to drive the limit seat 10 to rotate reversely and forwardly, so that the lubrication of the workpiece 60 is more uniform.

[0054] Among them, the teeth 221a of the outer gear disc 221 and the teeth 222a of the inner gear 222 are complementary and non-overlapping in the circumferential direction, so that the driven gear 23 selectively meshes with the outer gear disc 221 and the inner gear 222 for transmission, and the driven gear 23 disengages from one of the outer gear disc 221 and the inner gear 222 and immediately meshes with the other, so that the driven gear 23 keeps running, thereby driving the workpiece 60 placed on the limit seat 10 to continuously rotate and contact the lubrication tooling 40 to achieve sufficient lubrication.

[0055] The rotary drive mechanism 30 can drive the driving gear 22 to rotate through the driving shaft 33 , and the driven gear 23 can drive the limiting seat 10 to rotate through the driven shaft 28 , thereby driving the workpiece 60 to rotate to achieve comprehensive lubrication.

[0056] In some embodiments, the ratio of the number of teeth of the outer toothed disc 221 to the number of teeth of the driven gear 23 is greater than or equal to 1. Thus, during the meshing process between the outer toothed disc 221 and the driven gear 23 , the driven gear 23 can be driven to rotate forward for more than one circle, ensuring full lubrication of the workpiece 60 .

[0057] In some embodiments, the ratio of the number of teeth of the inner gear 222 to the number of teeth of the driven gear 23 is greater than or equal to 1 / 2. In this way, during the meshing process of the inner gear 222 and the driven gear 23, the driven gear 23 can be driven to rotate forward for more than half a circle, so that the lubrication of the workpiece 60 is uniform and in place.

[0058] Through the coordination of the number of teeth of the outer toothed disc 221, the inner gear 222 and the driven gear 23, the driving gear 22 rotates one circle forward to drive the driven gear 23 to rotate more than one circle forward and more than half a circle reversely, so that the workpiece 60 is lubricated evenly, comprehensively, efficiently and in place. The specific number of teeth of the outer toothed disc 221, the inner gear 222 and the driven gear 23 can be determined according to design requirements.

[0059] Continue to combine Figures 1 to 5As shown, in some embodiments, the limit seat 10 includes: a limit cavity (formed in the limit seat 10 ), fixedly connected to the driven gear 23 of the gear transmission assembly 20 ; and a clamping seat 12 , fixed in the limit cavity by a latch 13 .

[0060] The holder 12 can be used for the workpiece 60 to be lubricated to be clamped and placed; the holder 12 is detachably fixed in the limiting cavity by the pin 13, and the corresponding holder 12 can be replaced according to the shape and size of the workpiece 60. The holder 12 can be quickly replaced by the pin 13, so that the lubrication device of the utility model is suitable for a variety of different lubrication scenarios.

[0061] Figure 6 The structure of the lubrication tool is shown in figure. Figure 7 The structure of the lubrication base is shown; combined Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, the lubrication tool 40 includes: a lubrication base 42 connected to the mobile drive mechanism 50, and the lubrication base 42 is provided with an oil outlet 42a; a porous material 43, which is sleeved on the lubrication base 42 and receives the lubrication medium discharged from the oil outlet 42a.

[0062] During the lubrication process, the lubricating medium overflows from the oil outlet 42a of the lubricating base 42 and adheres to the porous material 43, and the porous material 43 contacts the part to be lubricated of the workpiece 60 to achieve lubrication. Specifically, after the lubrication device is automatically started, the moving drive mechanism 50 automatically operates first, driving the porous material 43 to contact the workpiece 60; then the rotating drive mechanism 30 operates, driving the workpiece 60 to rotate forward and reverse through the gear transmission assembly 20 to contact the porous material 43, and complete automatic lubrication.

[0063] The lubricating medium is, for example, lubricating oil, but not limited thereto; the porous material 43 can be, but not limited thereto, sponge.

[0064] In addition, the lubricating tool 40 can be provided in multiple sets around the limiting seat 10, for example Figure 1 Two sets are shown in order to achieve adequate lubrication of the workpiece 60.

[0065] Figure 8 Diagram the structure of the workpiece to be lubricated; Figure 1 , Figures 6 to 8 As shown, in some embodiments, the lubrication base 42 is formed into a cylindrical shape including a plurality of assembly grooves 420 , each assembly groove 420 is provided with an oil outlet 42 a , and the porous material 43 is sleeved on at least one assembly groove 420 .

[0066] In this way, the porous material 43 can be placed in a suitable position of the assembly groove 420 according to lubrication needs, so as to achieve lubrication of a specific working part.

[0067] In the embodiment of the utility model, it is shown that the assembly groove 420 includes three sections, wherein the top and bottom sections of the assembly groove 420 are sleeved with porous materials 43 to achieve targeted lubrication of the two lubricated parts 62 along the upper and lower ends of the workpiece 60 and reduce the consumption cost of the lubricating medium. Among them, the oil outlet hole 42a of the bottom assembly groove 420 is set on the side wall of the lubrication base 42, and the oil outlet hole 42a of the top assembly groove 420 is set on the top wall of the lubrication base 42, but it is not limited to this. In other embodiments, the number of assembly grooves 420, the position of the oil outlet hole 42a, and the distribution of porous materials 43 can be adjusted as needed.

[0068] In some embodiments, an oil inlet hole 42b is provided at the bottom of the lubrication base 42, and the oil inlet hole 42b leads to the oil outlet hole 42a; the lubrication base 42 is assembled on a tooling base 44 connected to the mobile drive mechanism 50, and the tooling base 44 is provided with a through hole 440 connected to the oil inlet hole 42b, and the oil inlet hole 42b and the through hole 440 are pressed together by a sealing ring 45.

[0069] The lubrication base 42 with the porous material 43 is firmly connected to the mobile driving mechanism 50 through the tooling base 44; the through hole 440 of the tooling base 44 is connected with the oil inlet hole 42b of the lubrication base 42, so that the lubricating medium is delivered to the oil inlet hole 42b through the through hole 440; and the oil inlet hole 42b and the through hole 440 are sealed by a sealing ring 45 to prevent leakage of the lubricating medium.

[0070] In some embodiments, the rotation drive mechanism 30 is a motor, and the rotation drive mechanism 30 is mounted on the substrate 80 ; and / or the movement drive mechanism 50 is a cylinder, and the movement drive mechanism 50 is mounted on the substrate 80 via a mounting frame 55 .

[0071] The motor can realize stable rotation drive, and the cylinder can realize stable movement drive. The motor and the mounting frame 55 can be fixed on the base plate 80 by fasteners 70 (such as hexagon socket screws).

[0072] The present invention also provides a brake piston lubrication device. In the above lubrication device embodiment, the workpiece 60 to be lubricated is a piston, but it is not limited to this. The lubrication device of the present invention can also lubricate other workpieces that need lubrication.

[0073] Combination Figures 1 to 8 As shown, the piston lubrication equipment includes: a lubrication device as described in any of the above embodiments; a piston, supported in a limit seat 10; wherein the moving drive mechanism 50 can drive the lubrication tooling 40 to move to the lubricated portion 62 of the contact piston, and the rotating drive mechanism 30 can drive the piston to rotate forward and reversely contact the lubrication tooling 40 through the gear transmission assembly 20.

[0074] The piston lubrication equipment of the utility model is equipped with the above-mentioned lubrication device, which can stably limit the piston in the limit seat 10; the lubrication tool 40 is driven to move toward the limit seat 10 by the mobile drive mechanism 50, so that the lubrication tool 40 contacts the piston for lubrication; the limit seat 10 is driven to rotate forward and reversely by the gear transmission assembly 20 along with the operation of the rotating drive mechanism 30, so that the piston contacts the lubrication tool 40 in the forward and reverse rotation to achieve uniform lubrication; and the forward and reverse rotation of the piston is realized by the structural design of the gear transmission assembly 20, without the need to rotate the drive mechanism 30 to change the running direction, which can simplify the drive design and enhance stability.

[0075] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A lubrication device, characterized in that: include: The limit seat is connected to the rotation drive mechanism through a gear transmission assembly, and runs with the rotation drive mechanism. The gear transmission assembly can drive the limit seat to rotate forward and reverse; The lubrication tool is connected to the mobile driving mechanism, and the mobile driving mechanism can drive the lubrication tool to move toward the limiting seat.

2. The lubrication device according to claim 1, characterized in that: The gear transmission assembly comprises: A driving gear, comprising an outer toothed disc and an inner gear fixed to the disc surface of the outer toothed disc, wherein the outer toothed disc and the inner gear are respectively provided with sector-shaped distributed teeth, and the teeth of the outer toothed disc and the teeth of the inner gear are complementary in the circumferential direction and do not overlap; A driven gear is rotatably disposed on the disk surface of the outer toothed disk, and the driven gear selectively meshes with the outer toothed disk and the inner gear for transmission; Wherein, the outer gear disc is connected to the rotation driving mechanism, and the driven gear is connected to the limiting seat.

3. The lubrication device according to claim 2, characterized in that: The ratio of the number of teeth of the outer gear disk to the number of teeth of the driven gear is greater than or equal to 1.

4. The lubrication device according to claim 2, characterized in that: The ratio of the number of teeth of the internal gear to the number of teeth of the driven gear is greater than or equal to 1 / 2.

5. The lubrication device according to claim 1, characterized in that: The limit seat comprises: A limiting cavity, fixedly connected to the driven gear of the gear transmission assembly; The card holder is fixed in the limiting cavity by a latch.

6. The lubrication device according to claim 1, characterized in that: The lubrication tool comprises: A lubrication base, connected to the mobile drive mechanism, the lubrication base being provided with an oil outlet hole; The porous material is sleeved on the lubrication base and receives the lubrication medium discharged from the oil outlet.

7. The lubrication device according to claim 6, characterized in that: The lubrication base is formed into a cylindrical shape including a plurality of assembly grooves, each of which is provided with the oil outlet hole, and the porous material is sleeved on at least one of the assembly grooves.

8. The lubrication device according to claim 6, characterized in that: The bottom of the lubrication base is provided with an oil inlet hole, and the oil inlet hole leads to the oil outlet hole; The lubrication base is assembled on a tooling base connected to the mobile drive mechanism. The tooling base is provided with a through hole connected to the oil inlet hole. The oil inlet hole and the through hole are pressed and fitted by a sealing ring.

9. The lubrication device according to any one of claims 1 to 8, characterized in that: The rotation driving mechanism is a motor, and the rotation driving mechanism is installed on the substrate; and / or The moving driving mechanism is a cylinder, and the moving driving mechanism is mounted on the base plate through a mounting frame.

10. A brake piston lubrication device, characterized in that: include: The lubrication device according to any one of claims 1 to 9; A piston supported in the limiting seat; The moving drive mechanism can drive the lubricating tool to move to contact the part to be lubricated of the piston, and the rotating drive mechanism can drive the piston to rotate forward and reverse through the gear transmission assembly to contact the lubricating tool.

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