CN213438326U

CN213438326U - Ejector rod device for circumferential positioning of differential shell

Info

Publication number: CN213438326U
Application number: CN202022144778.3U
Authority: CN
Inventors: 吕桥枫; 徐士杰; 郁明; 代洪波; 孔钱伟
Original assignee: Hangzhou Jietu Transmission Parts Co ltd
Current assignee: Hangzhou Jietu Transmission Parts Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-15
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses an it is higher to overcome differential mechanism casing circumference positioner's among the prior art preparation cost, uses the relatively poor technical problem of flexibility, provides a differential mechanism casing circumference location's ejector pin device, the on-line screen storage device comprises a base, be equipped with supporting seat and positioning seat on the base, it is connected with branch to rotate on the supporting seat, the one end of branch is connected with the ejector pin, the one end that the base was kept away from to the positioning seat is equipped with the spacing hole that allows the ejector pin to wear out, the ejector pin takes place relative slip with the positioning seat under branch drives, be equipped with the location boss on the global of ejector pin, the one end and the location boss butt. This application ejector pin device's preparation cost is lower, can realize the effective positioning to differential mechanism casing circumference, and uses the flexibility higher.

Description

Ejector rod device for circumferential positioning of differential shell

Technical Field

The utility model relates to a differential mechanism casing location technical field especially relates to a push rod device of differential mechanism casing circumference location.

Background

The automobile differential is a main part of a drive axle and mainly has the main function of allowing the half shafts on the two sides to rotate at different rotating speeds while transmitting power to the half shafts on the two sides, so that wheels on the two sides can run in a pure rolling mode at unequal distances as far as possible, and the friction between tires and the ground is reduced. The differential mechanism is composed of planetary gears, a differential mechanism shell, a half axle gear and other parts. The differential case is a main part, and the machining precision of the differential case has great influence on the normal work of the differential and the whole axle.

The differential shell has complex structure of parts, complex working procedures and more varieties; when holes on the circumferential surface of the shell are machined, a special device is needed to position the differential shell, and the machined holes are located at the same position.

Chinese patent No. CN201720684205.5, published as 2018.01.12, discloses a circumferential positioning device for boring a planetary hole in a differential case, comprising a flexible elastic pin perpendicular to the axial direction of the differential case and a driving cylinder connected to the elastic pin for driving the flexible elastic pin to stretch, wherein the end of the elastic pin is a positioning plane contacting with the differential case, and the driving direction of the driving cylinder is perpendicular to the axial direction of the differential case.

The middle elastic pin is axially vertical to the differential shell and is abutted against the outer surface of the differential shell to realize circumferential positioning; the problem is that the telescopic action of the elastic pin needs to be completed under the driving of the air cylinder, and the positioning device has higher cost and poorer flexibility.

Disclosure of Invention

The utility model discloses an overcome among the prior art differential mechanism casing circumference positioner's preparation cost higher, use the relatively poor technical problem of flexibility, provide a differential mechanism casing circumference location's ejector pin device, ejector pin device's preparation cost is lower, can realize the effective location to differential mechanism casing circumference, and use the flexibility higher.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a differential mechanism casing circumference location's ejector pin device, includes the base, is equipped with supporting seat and positioning seat on the base, rotates on the supporting seat and is connected with branch, and the one end of branch is connected with the ejector pin, and the one end that the base was kept away from to the positioning seat is equipped with the spacing hole that allows the ejector pin to wear out, and the ejector pin takes place relative slip with the positioning seat under branch drives, is equipped with the location boss on the global of ejector pin, the one end and the location boss butt of piece that reset, the other end of. The application provides a carry out ejector pin device of circumference location to differential mechanism casing, branch drives the ejector pin and reciprocates, and the positioning seat carries on spacingly to the removal of ejector pin, and during the use, the ejector pin inserts blank precast hole and carries out the coarse positioning for the position in each part hole is unanimous, and when needs rotation work piece, the ejector pin is kept away from differential mechanism casing and is removed under the effect that resets, guarantees that the part can normally carry out rotation processing. This application the ejector pin device can realize the effective location to differential mechanism casing circumference, and the preparation cost of ejector pin device is lower and use the flexibility ratio higher.

Preferably, branch is C type pole, and branch includes arc section and straight pole section, and the arc section is arranged along the circumference of positioning seat, and the arc section passes through the bracing piece with the ejector pin and links to each other, and the one end that the ejector pin is close to the base is equipped with the mounting hole that is used for wearing to establish the bracing piece. The arc section is arranged along the circumferential direction of the positioning seat, the arc section is in a half-wrapping state relative to the positioning seat, a supporting rod is connected to the arc section, the supporting rod is arranged along a mounting hole in the ejector rod in a penetrating mode, a allowance gap allowing the arc section to freely move exists between the arc section and the positioning seat, the supporting rod drives the ejector rod to synchronously move when rotating under the external loading effect, the positioning seat limits the movement of the ejector rod, and the movement of the ejector rod is guaranteed to be carried out along the normal direction of the base.

Preferably, the positioning seat is in a shell shape, slots are formed in the peripheral surface of the positioning seat and comprise a first slot and a second slot which are arranged along the radial direction of the positioning seat, the slot width of each slot is larger than the diameter of the supporting rod, and the connecting position of the ejector rod and the supporting rod is located inside the positioning seat. The slot is used for penetrating the supporting rod, and the supporting rod drives the ejector rod to synchronously move up and down while moving along the length direction of the slot.

Preferably, the circumferential surface of the support rod protruding from the positioning seat is provided with a tightening nut. Its purpose carries on spacingly to the bracing piece, avoids the bracing piece to drop from the segmental arc.

Preferably, the positioning boss is located inside the positioning seat, the reset piece sleeved on the circumferential surface of the ejector rod is located inside the positioning seat, the reset piece is located on the side, away from the base, of the positioning boss, and the reset piece is a compression spring. When the ejector rod moves away from the base, the reset piece is in a compressed state, and when the differential shell needs to be rotated, the ejector rod is separated from the differential shell under the action of elastic force of the reset piece.

Preferably, the supporting seat comprises a bottom plate and ear plates, the ear plates comprise a first ear plate and a second ear plate which are arranged at intervals, the straight rod section is located between the first ear plate and the second ear plate, the straight rod section is connected with the ear plates in a rotating mode through supporting columns, and tightening nuts are arranged on the circumferential surfaces of the supporting columns protruding out of the ear plates.

Preferably, a handle is arranged at one end of the straight rod section far away from the arc-shaped section.

Preferably, the support base and the base are connected by a fixing bolt.

To sum up, the utility model discloses following beneficial effect has: (1) the ejector rod device is low in manufacturing cost, capable of achieving effective circumferential positioning of the differential shell and high in using flexibility; (2) the positioning seat is used for limiting the movement of the ejector rod, and the movement of the ejector rod is guaranteed to be carried out along the normal direction of the base.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is an isometric view of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a schematic view of the present invention in use.

In the figure:

base 1, supporting seat 2, bottom plate 21, otic placode 22, positioning seat 3, branch 4, arc section 41, straight pole section 42, ejector pin 5, spacing hole 6, location boss 7, the piece that resets 8, mounting hole 9, slot 10, support column 11, handle 12, differential mechanism casing 13.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1 to 4, a push rod device for circumferential positioning of a differential housing comprises a base 1, wherein a supporting seat 2 and a positioning seat 3 are arranged on the base, a supporting rod 4 is rotatably connected to the supporting seat, one end of the supporting rod is connected with a push rod 5, a limiting hole 6 allowing the push rod to penetrate out is arranged at one end, away from the base, of the positioning seat, the push rod slides relative to the positioning seat under the driving of the supporting rod, a positioning boss 7 is arranged on the circumferential surface of the push rod, one end of a reset piece 8 is abutted against the positioning boss, and the other end of the reset piece; the supporting rod is a C-shaped rod and comprises an arc-shaped section 41 and a straight rod section 42, the arc-shaped section is arranged along the circumferential direction of the positioning seat, the arc-shaped section is connected with the ejector rod through the supporting rod, and one end of the ejector rod, which is close to the base, is provided with a mounting hole 9 for the supporting rod to penetrate through; the positioning seat is in a shell shape, the peripheral surface of the positioning seat is provided with a slot 10, the slot comprises a first slot and a second slot which are arranged along the radial direction of the positioning seat, the slot width of the slot is larger than the diameter of the supporting rod, and the connecting position of the ejector rod and the supporting rod is positioned in the positioning seat; the peripheral surface of the support rod protruding out of the positioning seat is provided with a tightening nut; the positioning boss is positioned in the positioning seat, the reset piece sleeved on the peripheral surface of the ejector rod is positioned in the positioning seat, the reset piece is positioned on one side of the positioning boss, which is far away from the base, and the reset piece is a compression spring; the supporting seat comprises a bottom plate 21 and lug plates 22, the lug plates comprise a first lug plate and a second lug plate which are arranged at intervals, the straight rod section is positioned between the first lug plate and the second lug plate, the straight rod section is rotatably connected with the lug plates through supporting columns 11, and tightening nuts are arranged on the peripheral surfaces of the supporting columns protruding out of the lug plates; a handle 12 is arranged at one end of the straight rod section far away from the arc section; the supporting seat is connected with the base through a fixing bolt.

As shown in fig. 1, the bottom is the base, the base is plate-shaped, the left side on the base is equipped with the positioning seat, the right side on the base is equipped with the bearing frame, supporting seat top-down includes otic placode and bottom plate, the bottom plate passes through fixing bolt with the base and links to each other, the otic placode includes interval arrangement's first otic placode and second otic placode, be equipped with the slot on the global of shell structure's positioning seat, in this embodiment, the slot includes along the radial symmetric arrangement's of positioning seat first slot and second slot, the wall of positioning seat is all link up to first slot and second slot, the slot is arranged along the normal direction of base, the bracing piece has been inserted in the slot. The bracing piece is arranged along the drawing normal direction, and the both ends of bracing piece link to each other with the segmental arc, and the segmental arc links to each other with straight pole section, and straight pole section is located between first otic placode and the second otic placode, and straight pole section rotates with the supporting seat and links to each other, and the right-hand member of straight pole section is connected with the handle.

As shown in fig. 3, be equipped with the location boss on the global of ejector pin, the location boss is close to the lower terminal surface of ejector pin, the upper end of positioning seat is equipped with spacing hole, the axis in spacing hole is on a parallel with the normal direction of base, the location boss is located inside the positioning seat during installation, wear out the ejector pin along spacing hole during the equipment and fix the positioning seat on the base again, it is located between location boss and the positioning seat to reset, it is compression spring to reset, the compression spring cover is established on the global of ejector pin, compression spring's upper end and the internal face butt of positioning seat, compression spring's lower extreme and the up end butt of location boss. When the ejector rod moves away from the base, the reset piece is in a compressed state, and when the differential case 13 needs to be rotated, the ejector rod is separated from the differential case under the action of elastic force of the reset piece.

Claims

1. The utility model provides a differential mechanism casing circumference location's ejector pin device, a serial communication port, including the base, be equipped with supporting seat and positioning seat on the base, rotate on the supporting seat and be connected with branch, the one end of branch is connected with the ejector pin, the one end that the base was kept away from to the positioning seat is equipped with the spacing hole that allows the ejector pin to wear out, the ejector pin takes place relative slip with the positioning seat under branch drives, be equipped with the location boss on the global of ejector pin, the one end and the location boss butt of piece reset, the other end of the piece that.

2. The differential case circumferential orientation ejector pin device of claim 1, wherein the strut is a C-shaped rod, the strut comprises an arc-shaped section and a straight rod section, the arc-shaped section is arranged along the circumferential direction of the positioning seat, the arc-shaped section is connected with the ejector pin through the support rod, and one end of the ejector pin near the base is provided with a mounting hole for passing through the support rod.

3. The differential case circumferential location ejector pin device of claim 2, wherein the positioning seat is in the form of a case, and the positioning seat has slots on its circumferential surface, the slots including a first slot and a second slot arranged along the radial direction of the positioning seat, the slot width being greater than the diameter of the strut, and the connection position of the ejector pin and the strut being located inside the positioning seat.

4. The differential case circumferentially positioned carrier bar assembly of claim 2, wherein a tightening nut is provided on the perimeter of the support bar projecting from the locating seat.

5. The differential housing circumferential positioning push rod device according to claim 1 or 2, wherein the positioning boss is located inside the positioning seat, the reset member sleeved on the circumferential surface of the push rod is located inside the positioning seat, and the reset member is located on a side of the positioning boss away from the base.

6. The circumferentially oriented carrier bar assembly of claim 2, wherein the support base includes a bottom plate and a lug plate, the lug plate includes a first lug plate and a second lug plate spaced apart from the bottom plate, the straight bar section is disposed between the first lug plate and the second lug plate, the straight bar section is rotatably connected to the lug plate via a support post, and a tightening nut is disposed on a circumferential surface of the support post projecting from the lug plate.

7. A circumferentially oriented carrier bar assembly as claimed in claim 2, wherein the end of the straight bar section remote from the arcuate section is provided with a handle.

8. A circumferentially oriented ram assembly for a differential case as claimed in claim 1 or claim 2, wherein the support base and the base are connected by a fixing bolt.

9. A circumferentially oriented ram apparatus of a differential case as claimed in claim 1 or claim 2, wherein said return member is a compression spring.