Electronic parking caliper

Abstract

The utility model discloses an electronic parking caliper which comprises a brake caliper body, a movable cavity, a plunger, a motor and a screw and further comprises a protective sleeve arranged on the peripheral wall of the plunger in a sleeving mode. The lubricating unit is used for lubricating the outer wall of the protective sleeve and the inner wall of the movable cavity; the mounting ring groove is formed in the outer peripheral side of the inner end face of the plunger; the convex ring is fixedly connected to the inner end of the inner cavity of the protective sleeve and detachably connected with the mounting ring groove through a screw, in daily use, by the adoption of the technical scheme, the protective sleeve is used for protecting the plunger, the plunger and the movable cavity do not rub with each other, meanwhile, the lubricating unit is arranged to lubricate the outer surface of the protective sleeve, the service life of the protective sleeve is prolonged, and the service life of the plunger is prolonged. And the service time of the protective sleeve is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of vehicle braking. Background Art

[0002] As a part of the brake system, the electronic parking caliper has a direct impact on the safety performance of the car. The electronic parking caliper includes a caliper, and a driving assembly is arranged inside the caliper. The driving assembly is connected to a motor. When the motor rotates, the driving assembly inside the caliper is driven, and finally the brake pads on the caliper are driven to hold the brake disc tightly. A guide assembly is arranged between the caliper and the mounting bracket. When braking, the caliper can move along the guide assembly to adjust the position between itself and the brake disc, so that the two brake pads can clamp the brake disc at the same time when braking. For example:

[0003] The Chinese utility model patent EPB electronic parking caliper with announcement number CN218325909U includes a brake caliper body, an EPB motor, an active cavity, a drive shaft, a drive sleeve, a piston guide sleeve, a guide column, a first brake pad, a second brake pad and a brake pad pressure plate. The drive shaft and the drive sleeve are matched with a sawtooth thread to withstand a large unidirectional pressure, and the brake disc is clamped and positioned for easy braking; and a rectangular dust ring and an elastic dust sleeve are arranged inside to seal the active cavity and the piston guide sleeve to prevent dust from entering the active cavity. However, the defects are as follows:

[0004] No measures are provided between the piston guide sleeve and the movable cavity to reduce the friction between the piston guide sleeve and the movable cavity, so the piston guide sleeve is easily worn and has a short service life. Summary of the invention

[0005] The utility model aims to solve one of the technical problems existing in the prior art.

[0006] The present application provides an electronic parking caliper, comprising a brake caliper body, an active chamber, a plunger, a motor and a screw, and also comprising:

[0007] A protective sleeve, which is sleeved on the outer peripheral wall of the plunger;

[0008] The lubrication unit is used to lubricate the outer wall of the protective sleeve and the inner wall of the movable cavity.

[0009] Also includes:

[0010] A mounting ring groove is arranged on the outer peripheral side of the inner end surface of the plunger;

[0011] A convex ring fixedly connected to the inner end of the inner cavity of the protective sleeve;

[0012] The convex ring is detachably connected to the mounting ring groove by means of screws.

[0013] The convex ring and the protective cover are integrally formed.

[0014] The lubrication unit consists of:

[0015] An oil storage chamber, which is arranged at the outer end of the plunger;

[0016] A plurality of micro holes are arranged on the protective sleeve at intervals along the circumferential direction;

[0017] The oil guide channel connects the oil storage cavity and each micropore.

[0018] The oil guide flow channels have several.

[0019] The oil flow channel includes:

[0020] An oil guide ring groove is arranged on the inner peripheral wall of the protective sleeve and is connected with each micro hole;

[0021] A plurality of oil guide pipes are arranged at intervals along the circumferential direction on the outer peripheral wall of the plunger and connect the oil storage cavity with the oil guide ring groove.

[0022] The lubrication unit also includes:

[0023] A screw sleeve, which is installed in the outer end of the oil storage chamber through threads;

[0024] The slide plate is installed in a floating manner in the inner cavity of the screw sleeve through a spring.

[0025] The lubrication unit also includes:

[0026] A recessed groove is arranged at the outer end of the inner cavity of the oil storage cavity;

[0027] The annular protrusion is fixedly connected to the outer end of the outer peripheral wall of the screw sleeve and can be sunk into the groove.

[0028] The beneficial effects of the utility model are as follows:

[0029] 1. Through the setting of the protective sleeve, the oil storage cavity, a number of micropores, the oil guide ring groove and a number of oil guide pipes, the grease in the oil storage cavity is supplied between the protective sleeve and the active cavity, thereby extending the maintenance cycle;

[0030] 2. Through the arrangement of the screw sleeve, the slide plate, the groove, the convex ring and the spring, the grease can overcome the gravity and be discharged from the micro holes on the upper part to lubricate the protective sleeve and the upper part of the movable cavity, thereby improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A top view of the electronic parking caliper in the embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the internal structure of the electronic parking caliper in the embodiment of the present application;

[0033] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0034] Reference numerals

[0035] 1-brake caliper body, 2-movable chamber, 3-plunger, 4-motor, 5-screw, 6-protective cover, 7-lubricating unit, 71-oil storage chamber, 72-micropore, 73-screw sleeve, 74-slide plate, 75-spring, 76-groove, 77-ring convex, 8-mounting ring groove, 9-oil guide channel, 91-oil guide ring groove, 92-oil guide pipe, 10-convex ring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0037] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0038] The electronic parking caliper provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] like Figures 1 to 3 As shown, an embodiment of the present application provides an electronic parking caliper, including a brake caliper body 1, an active cavity 2, a plunger 3, a motor 4 and a screw 5, and also includes a protective cover 6, which is sleeved on the outer peripheral wall of the plunger 3; a lubrication unit 7, which is used to lubricate the outer wall of the protective cover 6 and the inner wall of the active cavity 2.

[0041] Furthermore, it also includes a mounting ring groove 8, which is arranged on the outer peripheral side of the inner end surface of the plunger 3; a convex ring 10, which is fixed to the inner end of the inner cavity of the protective sleeve 6, and the convex ring 10 is detachably connected to the mounting ring groove 8 by screws.

[0042] Preferably, the convex ring 10 and the protective sleeve 6 are integrally formed.

[0043] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the motor is set to have an automatic compensation function and will not slip. The protective cover 6 is arranged on the outer peripheral wall of the plunger 3. During installation, the screws are tightened to fix the convex ring 10 in the mounting ring groove 8, thereby fixing the protective cover 6 on the outer peripheral wall of the plunger 3. When the protective cover 6 is damaged, after removing the plunger 3 from the active cavity 2, the screws are removed, and the protective cover 6 can be removed from the outside of the plunger 3 and replaced with a new protective cover 6.

[0044] Embodiment 2:

[0045] like Figures 2 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the lubrication unit 7 includes an oil storage chamber 71, which is arranged at the outer end of the plunger 3; a plurality of micropores 72, which are arranged on the protective sleeve 6 at intervals along the circumferential direction; and an oil guide channel 9, which connects the oil storage chamber 71 and the micropores 72.

[0046] Preferably, the oil guide channels 9 have several.

[0047] Furthermore, the oil guide channel 9 includes an oil guide ring groove 91 , which is arranged on the inner circumferential wall of the protective sleeve 6 and is connected to each micropore 72 ; a plurality of oil guide pipes 92 are arranged on the outer circumferential wall of the plunger 3 at intervals along the circumferential direction, connecting the oil storage cavity 71 and the oil guide ring groove 91 .

[0048] Furthermore, the lubrication unit 7 further comprises a screw sleeve 73 which is installed in the outer end of the oil storage chamber 71 through threads; and a slide plate 74 which is installed in the inner cavity of the screw sleeve 73 in a floating manner through a spring 75 .

[0049] Furthermore, the lubrication unit 7 further comprises: a groove 76 disposed at the outer end of the inner cavity of the oil storage cavity 71 ; and an annular protrusion 77 fixedly connected to the outer end of the outer peripheral wall of the screw sleeve 73 and capable of being sunk into the groove 76 .

[0050] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the oil storage chamber 71 is filled with grease. During the tightening of the screw sleeve 73, the slide plate 74 squeezes the grease into each oil guide pipe 92, so that the grease enters the oil guide ring groove 91 through each oil guide pipe 92, and then enters between the outer peripheral wall of the protective sleeve 6 and the inner peripheral wall of the active chamber 2 through each micropore 72.

[0051] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0052] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic parking caliper, comprising a caliper body (1), a movable chamber (2), a plunger (3), a motor (4) and a screw (5), characterized in that: Also includes: A protective sleeve (6) sleeved on the outer peripheral wall of the plunger (3); A lubrication unit (7) is used to lubricate the outer wall of the protective sleeve (6) and the inner wall of the movable cavity (2).

2. The electronic parking caliper according to claim 1, characterized in that: Also includes: A mounting ring groove (8) disposed on the outer peripheral side of the inner end surface of the plunger (3); A convex ring (10) fixedly connected to the inner end of the inner cavity of the protective sleeve (6); The convex ring (10) is detachably connected to the mounting ring groove (8) via screws.

3. The electronic parking caliper according to claim 2, characterized in that: The convex ring (10) and the protective sleeve (6) are integrally formed.

4. The electronic parking caliper according to claim 1, characterized in that: The lubrication unit (7) comprises: An oil storage chamber (71) disposed at the outer end of the plunger (3); A plurality of micro holes (72) are arranged on the protective sleeve (6) at intervals along the circumferential direction; The oil guide channel (9) communicates the oil storage cavity (71) with each micropore (72).

5. The electronic parking caliper according to claim 4, characterized in that: The oil guide channels (9) have a plurality of.

6. The electronic parking caliper according to claim 4, characterized in that: The oil guide channel (9) comprises: An oil guide ring groove (91) is provided on the inner peripheral wall of the protective sleeve (6) and is connected to each micropore (72); A plurality of oil guide pipes (92) are arranged at intervals along the circumferential direction on the outer peripheral wall of the plunger (3) and connect the oil storage cavity (71) with the oil guide ring groove (91).

7. The electronic parking caliper according to claim 4, characterized in that: The lubrication unit (7) further comprises: A threaded sleeve (73) which is installed in the outer end of the oil storage chamber (71) via a thread; The slide plate (74) is installed in a floating manner in the inner cavity of the screw sleeve (73) via a spring (75).

8. The electronic parking caliper according to claim 7, characterized in that: The lubrication unit (7) further comprises: A recessed groove (76) disposed at an outer end of the inner cavity of the oil storage cavity (71); The annular protrusion (77) is fixedly connected to the outer end of the outer peripheral wall of the screw sleeve (73) and can be sunk into the recess (76).

Images