CN218287722U - Electronic booster is inside prevents changeing guiding mechanism - Google Patents
Electronic booster is inside prevents changeing guiding mechanism Download PDFInfo
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- CN218287722U CN218287722U CN202221744699.9U CN202221744699U CN218287722U CN 218287722 U CN218287722 U CN 218287722U CN 202221744699 U CN202221744699 U CN 202221744699U CN 218287722 U CN218287722 U CN 218287722U
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Abstract
The utility model discloses an inside guiding mechanism that prevents changeing of electron booster. The anti-rotation component mainly comprises a front shell, a rear shell, an anti-rotation component, a screw, a gear component and other parts; the front shell and the rear shell are assembled to form a relatively closed cavity; the fixed gear component is installed to the internal terminal surface of rear housing, and the gear assembly area screw hole, screw rod suit constitute the screw thread pair in the gear assembly screw hole, and the screw rod is installed in the cavity through preventing that the rotating frame subassembly is installed for the screw rod only axial displacement, unable rotation. The utility model discloses compact structure, intensity are high, prevent not having assembly gap between revolving rack and the bush, have prevented because of impact and the noise that the clearance produced, wholly can bear higher moment of torsion, extension assembly fatigue life, and the noise is less when simple to operate and slip.
Description
Technical Field
The utility model belongs to car braking system relates to a line control electronic booster's inner structure, has especially related to an electronic booster is inside prevents changeing guiding mechanism.
Background
In the design of an electronic booster, the rotary motion of a motor is generally converted into linear motion, and a master cylinder is pushed to generate hydraulic pressure required by braking. The speed-reducing and torque-increasing part generally adopts a gear to reduce speed, and the rotary motion is converted into linear motion, and a screw sleeve or a ball screw is generally adopted, but no matter which structure is adopted, in order to enable the screw or the screw to generate linear motion, an anti-rotation mechanism is required to limit the rotation of the screw or the screw. In the existing design, the anti-rotation frame is welded at the end part of the screw rod, two through holes are respectively arranged at two ends of the anti-rotation frame, and the two rods penetrate through the through holes and then are fixed with the shell to play a role in preventing rotation.
Although the anti-rotation problem of screw rod or lead screw can be solved to this kind of design, owing to prevent that the through-hole on both sides has increased by the rotating bracket, must lead to preventing that the rotating bracket appearance grow, and then make procapsid appearance grow, need bigger installation space at last. The anti-rotation frame is characterized in that a gap is reserved between the anti-rotation frame and the rod, a buffer sleeve is required to be added for preventing impact noise and the like, the anti-rotation frame can be transversely installed for a large area, and as a result, the anti-rotation frame is reduced in strength and shortened in fatigue life of the assembly.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem existing in the background art, the utility model aims at providing a novel can be used to electron booster's inside prevents changeing guiding mechanism to solve current drive mechanism and prevent that the revolving rack appearance is big on the contrary, intensity is not enough scheduling problem.
The utility model provides a technical scheme of its problem is:
the utility model mainly comprises a front shell, a rear shell, an anti-rotating frame component, a screw rod, a gear component and other parts; the front shell and the rear shell are assembled to form a relatively closed cavity; the fixed gear component is installed to the internal terminal surface of rear housing, and the gear assembly area screw hole, screw rod suit constitute the screw thread pair in the gear assembly screw hole, and the screw rod is installed in the cavity through preventing that the rotating frame subassembly is installed for the screw rod only axial displacement, unable rotation.
The two sides of the front shell are provided with sliding grooves, and the two ends of the anti-rotating frame component are respectively embedded in the sliding grooves on the two sides of the front shell.
The center of the rear shell is provided with a counter bore for fixing the gear assembly and ensuring the axial and radial positioning of the gear assembly.
The anti-rotation frame component comprises an anti-rotation frame and a bushing; prevent that the middle part terminal surface of revolving rack sets up a plurality of square holes that are used for connecting the screw rod, sets up a plurality of archs on the terminal surface of screw rod, and the arch inlays the dress in the square hole for spacing installation of circumference, unable rotation each other between screw rod and the revolving rack, install respectively after the both ends parcel bush of revolving rack in the spout of both sides on the procapsid.
The outer peripheral face of the lining is provided with a plurality of arc-shaped grooves, and the arc-shaped grooves are used for storing grease so as to reduce friction between the lining and the front shell.
The gear assembly comprises a gear and a bearing, a threaded hole is formed in the center of the gear, the screw rod is sleeved in the threaded hole of the gear to form a thread pair, the shaft part of the gear extends to be sleeved in a counter bore of the inner end face of the rear shell through the bearing, and the bearing is sleeved on the gear and is axially limited through a check ring.
The shaft part of the gear extends axially to form a step, the step is in interference fit with the bearing inner ring, the bearing inner ring is fixed by a check ring, and the outer ring of the bearing is in interference fit with the rear shell.
The screw rod is internally sleeved with a feedback disc seat, the feedback disc seat is connected with the screw rod in a relatively axially movable manner, the feedback disc seat is connected with a piston of the main cylinder through a mandril, and meanwhile, the feedback disc seat is connected with the front shell and a cylinder body of the main cylinder through a return spring.
The peripheral edge of back casing be equipped with the round turn-ups, have the screw hole that is used for with the procapsid cooperation connection on the turn-ups, and turn-ups department is equipped with the strengthening rib.
The utility model discloses the during operation gear is rotatory, rotates for the restriction screw rod, is fixed with one at the screw rod terminal surface and prevents the revolving rack, prevents that the revolving rack both ends have the bush, has two slides on the preceding shell, and the bush just blocks in the slide, and the screw rod can only be followed the axis direction and removed and can not rotate like this, and this structure and mode are compact, intensity is high, and the noise is less when simple to operate and slip.
The utility model has the advantages that:
the utility model discloses simplify the structure, reduced part quantity, do not restrict master cylinder installation angle, the concentric requirement when guaranteeing the gear rotation simultaneously.
The utility model discloses simplify assembly process, prevented not having the fit-up gap between revolving rack and the bush, prevented because of impact and the noise that the clearance produced.
The utility model discloses an anti-rotating frame is inside not grove installation part, overall structure can bear higher moment of torsion, extension assembly fatigue life, and compact structure reduces whole overall dimension, still reduces the friction between bush and the procapsid.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the gear assembly structure;
FIG. 3 is a partial schematic view of the front housing and chute;
FIG. 4 is a schematic view of an anti-rotation bracket assembly.
In the figure: 1. the anti-rotation device comprises a front shell, a rear shell, a rotating prevention frame component 3, a screw rod 4, a gear component 5, a gear component 6, a return spring 7 and a push rod; 11. the sliding groove 31, the bush 32, the anti-rotating frame 51, the gear 52, the bearing 53 and the retainer ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the mechanism mainly comprises a front shell 1, a rear shell 2, an anti-rotation frame component 3, a screw 4, a gear component 5 and other parts; the front shell 1 and the rear shell 2 are assembled to form a relatively closed cavity, all parts are positioned in the cavity, and the front shell 1 and the rear shell 2 are fixed through a circle of screws around to bear the thrust in the system; fixed gear subassembly 5 is installed to the terminal surface in back casing 2, and 5 threaded holes of gear subassembly, screw rod 4 suit constitute the screw thread pair in 5 threaded holes of gear subassembly, and screw rod 4 is installed in the cavity through preventing that bogie subassembly 3 for screw rod 4 only axial displacement, unable rotation, screw rod 4 and prevent that bogie subassembly 3 is fixed and can the transmission moment of torsion simultaneously.
The screw 4 is connected to an external drive source and is driven by the external drive source to perform linear motion.
As shown in fig. 3, sliding grooves 11 are formed in two sides of the front housing 1, two ends of the anti-rotation bracket assembly 3 are respectively embedded in the sliding grooves 11 in the two sides of the front housing 1, and the anti-rotation bracket assembly 3 is matched with the sliding grooves 11 in the front housing 1 to limit the rotation of the screw rod 4.
As shown in fig. 4, the anti-rotation bracket assembly 3 includes an anti-rotation bracket 32 and a bush 31; prevent that the center of revolving rack 32 is equipped with the central through-hole that the feedback disk seat passed, a plurality of square holes that are used for connecting screw rod 4 have been seted up to the middle part terminal surface of preventing revolving rack 32 around the central through-hole, set up a plurality of archs on the terminal surface of screw rod 4, the arch is inlayed and is adorned in the square hole for screw rod 4 with prevent revolving rack 32 between the spacing installation of circumference, unable rotation each other, prevent to install respectively behind the both ends parcel bush 31 of revolving rack 32 in the spout 11 of the both sides on procapsid 1.
The two sides of the inner part of the front shell 1 are respectively provided with a sliding groove 11, the sliding grooves 11 can be just matched with two bushings 31 on the anti-rotating frame component 3, the inner surface of each sliding groove 11 needs to be smooth, the shape of each sliding groove is consistent with the shape of each bushing 31, and the length of each sliding groove 11 needs to be larger than the working stroke of the electronic booster.
The rotation preventing frame 32 is a metal member, the bush 31 is a plastic member, and the rotation preventing frame 32 and the bush 31 are connected to each other by injection molding.
The outer circumferential surface of the bush 31 is provided with a plurality of arc-shaped grooves 33, and the arc-shaped grooves 33 are used to store grease to reduce friction between the bush 31 and the front case 1.
The rear housing 2 has a counter bore in the center of its inner end face for securing the gear assembly 5. As shown in fig. 2, the gear assembly 5 includes a gear 51 and a bearing 52, the center of the gear 51 is provided with a threaded hole, the screw rod 4 is sleeved in the threaded hole of the gear 51 to form a threaded pair, the shaft of the gear 51 extends through the bearing 52 and is sleeved in a counter bore of the inner end face of the rear housing 2, and the bearing 52 is sleeved on the gear 51 and is axially limited by a retaining ring 53.
The shaft part of the gear 51 extends axially to form a step, the step is in interference fit with the inner ring of the bearing 52, the inner ring of the bearing 52 is fixed by a retaining ring 53 to prevent the gear 51 and the inner ring of the bearing 52 from being separated axially, and the outer ring of the bearing 52 is in interference fit with the rear shell 2 to ensure that the gear 51 and the rear shell 2 can rotate relatively.
A feedback disc seat is sleeved in the screw rod 4, the feedback disc seat is connected with the screw rod 4 only in a relatively axial moving mode, the feedback disc seat is connected with a piston of the main cylinder through a mandril 7, and meanwhile the feedback disc seat is connected with the front shell 1 and a cylinder body of the main cylinder through a return spring 6.
The peripheral edge of 2 neighboring of back casings is equipped with the round turn-ups, has the screw hole that is used for being connected with procapsid 1 cooperation on the turn-ups, and turn-ups department is equipped with the strengthening rib in order to increase intensity.
The front shell 1 and the rear shell 2 are assembled to form a closed cavity, and thrust inside the system is borne by a circle of screws around the closed cavity. The center of the rear shell 2 is provided with a counter bore for fixing the gear component 5, so that the structure can be simplified, and the concentric requirement of the gear during rotation can be ensured.
Prevent changeing frame subassembly 3 including preventing changeing frame 32 and bush 31, prevent changeing frame 32 and be the metalwork, bush 31 is the working of plastics, prevents changeing frame 32 and bush 31 and is connected to an organic whole through moulding plastics, simplifies assembly process, more importantly makes through moulding plastics and prevents changeing frame 32 and bush 31 zonulae occludens, does not have the fit-up clearance, just so prevents impact and noise because of the clearance produces.
The bush 31 is moulded plastics in the outward flange of anti-rotating frame 32 both ends, prevents that the inside grooving installation part that does not need of rotating frame 32 like this, and overall structure's anti-rotating frame 32 can bear higher moment of torsion, prolongs assembly fatigue life, and prevents that rotating frame 32 overall dimension is compact, reduces whole overall dimension.
The surface of the bush 31 has grooves 33 for storing grease, which can slowly replenish the grease lost on the friction surface and reduce the friction between the bush 31 and the front housing 1.
The utility model discloses the braking working process under the mechanism is as follows:
the brake pedal is stepped on, the control motor rotates to drive the gear to rotate, a thread pair formed by threads inside the gear and a screw rod can convert the rotary motion of the gear into the linear motion of the screw rod under the action of the rotation of the gear, but the premise is that the screw rod cannot rotate, so the screw rod is limited not to rotate by fixing the screw rod and the anti-rotating frame, the rotation of the screw rod is limited by the anti-rotating frame component, and the anti-rotating frame component is matched with the sliding grooves on the front shell by virtue of bushings at two ends to limit the rotation of the anti-rotating frame.
Therefore, when the brake works, the gear rotates to drive the screw rod to move forwards, the screw rod pushes the anti-rotation frame to slide in the front shell sliding groove, meanwhile, the anti-rotation frame also pushes the ejector rod to move forwards, the return spring is compressed, and the main cylinder piston is pushed to generate pressure in the advancing process of the ejector rod to complete braking.
Claims (8)
1. The utility model provides an inside guiding mechanism that prevents changeing of electron booster which characterized in that: mainly comprises a front shell (1), a rear shell (2), an anti-rotating frame component (3), a screw (4) and a gear component (5); the front shell (1) and the rear shell (2) are combined to form a relatively closed cavity; fixed gear subassembly (5) are installed to the terminal surface in back casing (2), and gear assembly (5) threaded hole, screw rod (4) suit constitute the screw thread pair in gear assembly (5) threaded hole, and install in the cavity through preventing that swivel mount subassembly (3) screw rod (4) for but screw rod (4) axial displacement, unable rotation.
2. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 1, wherein:
the anti-rotation component is characterized in that sliding grooves (11) are formed in two sides of the front shell (1), and two ends of the anti-rotation component (3) are embedded in the sliding grooves (11) in the two sides of the front shell (1) respectively.
3. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 1, wherein:
the center of the rear shell (2) is provided with a counter bore for fixing the gear assembly (5) and ensuring the axial and radial positioning of the gear assembly (5).
4. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 2, wherein:
the anti-rotation frame component (3) comprises an anti-rotation frame (32) and a bushing (31); prevent that the middle part terminal surface of revolving rack (32) sets up a plurality of square holes that are used for connecting screw rod (4), sets up a plurality of archs on the terminal surface of screw rod (4), and the arch inlays the dress in the square hole for the spacing installation of circumference, unable rotation each other between screw rod (4) and the revolving rack (32), install respectively behind both ends parcel bush (31) of revolving rack (32) in spout (11) of both sides on procapsid (1).
5. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 4, wherein:
the outer peripheral surface of bush (31) be equipped with multichannel arc recess (33), arc recess (33) are used for storing grease to reduce the friction between bush (31) and procapsid (1).
6. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 1, wherein:
the gear assembly (5) comprises a gear (51) and a bearing (52), a threaded hole is formed in the center of the gear (51), the screw (4) is sleeved in the threaded hole of the gear (51) to form a threaded pair, the shaft part of the gear (51) extends to be sleeved in a counter bore of the inner end face of the rear shell (2) through the bearing (52), and the bearing (52) is sleeved on the gear (51) and is axially limited through a retainer ring (53); the shaft part of the gear (51) extends axially to form a step, the step is in interference fit with the inner ring of the bearing (52), the inner ring of the bearing (52) is fixed by a retainer ring (53), and the outer ring of the bearing (52) is in interference fit with the rear shell (2).
7. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 1, wherein:
the screw rod (4) is internally sleeved with a feedback disc seat, the feedback disc seat is connected with the screw rod (4) only in a relatively axially movable mode, the feedback disc seat is connected with a piston of the main cylinder through a mandril (7), and meanwhile the feedback disc seat is connected with the front shell (1) and a cylinder body of the main cylinder through a return spring (6).
8. An internal rotation-prevention guide mechanism of an electronic booster as claimed in claim 1, characterized in that:
the peripheral edge of back casing (2) be equipped with the round turn-ups, have the screw hole that is used for with procapsid (1) cooperation connection on the turn-ups, and turn-ups department is equipped with the strengthening rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221744699.9U CN218287722U (en) | 2022-07-06 | 2022-07-06 | Electronic booster is inside prevents changeing guiding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221744699.9U CN218287722U (en) | 2022-07-06 | 2022-07-06 | Electronic booster is inside prevents changeing guiding mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN218287722U true CN218287722U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221744699.9U Active CN218287722U (en) | 2022-07-06 | 2022-07-06 | Electronic booster is inside prevents changeing guiding mechanism |
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| CN (1) | CN218287722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092109A (en) * | 2022-07-06 | 2022-09-23 | 浙江亚太机电股份有限公司 | Anti-rotation guide mechanism inside electronic booster |
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2022
- 2022-07-06 CN CN202221744699.9U patent/CN218287722U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092109A (en) * | 2022-07-06 | 2022-09-23 | 浙江亚太机电股份有限公司 | Anti-rotation guide mechanism inside electronic booster |
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