CN107314729A - Differential casing Internal Spherical Surface position degree measurer - Google Patents
Differential casing Internal Spherical Surface position degree measurer Download PDFInfo
- Publication number
- CN107314729A CN107314729A CN201710693467.2A CN201710693467A CN107314729A CN 107314729 A CN107314729 A CN 107314729A CN 201710693467 A CN201710693467 A CN 201710693467A CN 107314729 A CN107314729 A CN 107314729A
- Authority
- CN
- China
- Prior art keywords
- differential casing
- dial gauge
- bar
- rod
- spherical surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of differential casing Internal Spherical Surface position degree measurer, being related to part quality inspection technical field, there is provided a kind of differential casing Internal Spherical Surface position degree measurer for being used to detect differential casing Internal Spherical Surface and the distance of datum plane.The measurer includes base, differential casing fixing device, dial gauge fixing device, dial gauge, measurement axle and contact bar；Differential casing fixing device quantity is two and is connected with base that two differential casing fixing devices are arranged at intervals, and space therebetween is differential mechanism receiving space；Dial gauge is vertically arranged at the top of differential mechanism receiving space；Dial gauge fixing device fixes dial gauge；Contact rod aperture is radially provided with measurement axle；Contact bar can make contact bar be fully located in contact rod aperture or partly stretch out contact rod aperture with contacting rod aperture threaded connection, rotating contact bar；Measurement axle is vertically arranged, and its top plan is contacted with the gauge outfit of dial gauge.Present invention can apply in differential casing quality inspection.
Description
Technical field
The present invention relates to part quality inspection technical field, more particularly to a kind of differential casing Internal Spherical Surface position degree measurer.
Background technology
Common automobile differential housing is numbered shown in the part for being 6 such as Fig. 1, and respectively there is an axle at automobile differential housing two ends
Hold installation cylindrical, also there are two planetary gear shaft holes on differential casing, axis and the bearing of planetary gear shaft hole install outer
Round axis is intersecting and vertical, therefore the axis of planetary gear shaft hole installs cylindrical axis one plane of formation with bearing, should
Plane hereinafter referred to as datum plane.There is Internal Spherical Surface, it is desirable to which the centre of sphere of Internal Spherical Surface is located in datum plane on the inside of differential casing.
Because the difficulty of processing of Internal Spherical Surface is larger, easily there is drift condition, the position of Internal Spherical Surface need to be detected, that is, detect interior ball
The face centre of sphere and datum plane distance, it is to avoid substandard product comes into the market.But as far as the applicant is aware, currently without be exclusively used in detection
The measurer of the above-mentioned position relationship of differential casing Internal Spherical Surface, makes the above-mentioned position relationship detection difficult of velocity-adjuster housing Internal Spherical Surface and appearance
Easily there is mistake.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of is used to detect differential casing Internal Spherical Surface and datum plane
The differential casing Internal Spherical Surface position degree measurer of distance.
Technical scheme for the use that solves the above problems is：Differential casing Internal Spherical Surface position degree measurer includes base, difference
Fast device case fixing device, dial gauge fixing device, dial gauge, measurement axle and contact bar；Differential casing fixing device quantity
For two, two differential casing fixing devices are arranged at intervals, and two differential casing fixing devices are connected with base, two
Space between differential casing fixing device is differential mechanism receiving space；Dial gauge is vertically arranged at differential mechanism receiving space
Top；Dial gauge fixing device fixes dial gauge；Contact rod aperture is radially provided with measurement axle；Bar is contacted with contacting rod aperture
Threaded connection, rotating contact bar can be such that contact bar is fully located in contact rod aperture or part stretching contact rod aperture；
During measurement, the bearing that two differential casing fixing devices fix differential casing two ends respectively installs cylindrical, and
Make bearing that cylindrical level to be installed, the planetary gear shaft hole of differential casing is vertical；The top and the bottom for measuring axle are located at two rows respectively
In star gear shaft holes, planetary gear shaft hole limitation measurement axle translation；Contact beam portion point stretch out contact rod aperture and with interior ball to be measured
Face is contacted, and the top plan of measurement axle is contacted with the gauge outfit of dial gauge.
It is further：Differential casing fixing device includes support base and pressing device；Support base is connected with base, branch
Semicircular bearing is provided with support seat, and peripheral groove is installed；Pressing device include hinge bearing rod, depression bar, swingle, rotation pole socket,
Clamping sleeve and clamping sleeve drive rod；Hinge bearing rod is located at the side of support base and is connected with base, swingle and swingle seat
In the opposite side of support base, rotation pole socket is connected with base, and swingle is hinged with rotation pole socket；Depression bar be located at support base just on
Side, one end and the hinge bearing rod of depression bar are hinged, and the other end of depression bar is provided with U-lag；When swingle is rotated to vertical state, rotation
Bull stick top enters U-lag, and clamping sleeve bottom is connected with swingle screw top, and clamping sleeve, which rotates and moved down, can descend moulded rod,
Clamping sleeve top is provided with drive hole；Clamping sleeve drive rod passes through drive hole.
It is further：Dial gauge fixing device includes fixed vertical rod, fixed flat bar and two Top fastening screws；Fixed vertical rod
It is connected with base；Fixed flat bar one end is provided with suit hole, and the other end is provided with dial gauge hole, and fixed flat bar is by being set with borehole jack
In fixed vertical rod, the table bar of dial gauge passes through dial gauge hole；One Top fastening screw is connected with fixed flat bar and holds out against fixation
Vertical rod, another Top fastening screw is connected with fixed flat bar and holds out against the table bar of dial gauge.
The beneficial effects of the invention are as follows：The present invention will be difficult to the distance of the differential casing Internal Spherical Surface and datum plane measured
The high variable quantity of the measurement axle easily measured is converted into, and is measured with dial gauge, be greatly simplify in differential carrier body
The measurement operation of spherical surface position degree, and improve measurement accuracy.
Brief description of the drawings
Differential casing Internal Spherical Surface position degree measurer front view when Fig. 1 is measuring state；
Differential casing Internal Spherical Surface position degree measurer left view when Fig. 2 is measuring state；
Marked in figure：Base 1, differential casing fixing device 2, support base 21, bearing install peripheral groove 211, hinge
Pole 22, depression bar 23, U-lag 231, rotation pole socket 24, swingle 25, clamping sleeve 26, clamping sleeve drive rod 27, dial gauge are fixed
Device 3, fixed vertical rod 31, fixed flat bar 32, Top fastening screw 33, measurement axle 4, contact rod aperture 41, contact bar 5, differential casing
6th, bearing installs cylindrical 61, planetary gear shaft hole 62, Internal Spherical Surface 63, dial gauge 7, differential mechanism receiving space 8.
Embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
In order to provide it is a kind of be used to detecting differential casing Internal Spherical Surface and datum plane (i.e. the axis of planetary gear shaft hole and
Bearing installs the plane of cylindrical axis formation) distance differential casing Internal Spherical Surface position degree measurer, such as Fig. 1 and Fig. 2 institutes
Show：Differential casing Internal Spherical Surface position degree measurer includes base 1, differential casing fixing device 2, dial gauge fixing device 3, hundred
Divide table 7, measurement axle 4 and contact bar 5；The quantity of differential casing fixing device 2 is two, two differential casing fixing devices 2
It is arranged at intervals, two differential casing fixing devices 2 are connected with base 1, the sky between two differential casing fixing devices 2
Between be differential mechanism receiving space 8；Dial gauge 7 is vertically arranged at the top of differential mechanism receiving space 8；Dial gauge fixing device 3 is consolidated
Determine dial gauge 7；Contact rod aperture 41 is radially provided with measurement axle 4；Contact bar 5 is threadedly coupled with contacting rod aperture 41, is rotated
Contact bar 5 can be such that contact bar 5 is fully located in contact rod aperture 41 or part stretching contact rod aperture 41；During measurement, two differentials
The bearing that device case fixing device 2 fixes the two ends of differential casing 6 respectively installs cylindrical 61, and bearing is installed cylindrical 61 water
Flat, the planetary gear shaft hole 62 of differential casing 6 is vertical；The top and the bottom for measuring axle 4 are located at two planetary gear shaft holes 62 respectively
Interior, the limitation measurement axle 4 of planetary gear shaft hole 62 is translated；Contact bar 5 part stretch out contact rod aperture 41 and with Internal Spherical Surface 63 to be measured
Contact, the top plan of measurement axle 4 is contacted with the gauge outfit of dial gauge 7.
The measurement process and principle of this measurer are as follows：A, the bearing at the two ends of differential casing 6 is installed cylindrical 61 it is put into two
In individual differential casing fixing device 2, the remainder of differential casing 6 is located in differential mechanism receiving space 8.B, adjustment differential
The position of device housing 6, makes the planetary gear shaft hole 62 of differential casing 6 vertical, then operate differential casing fixing device 2 by differential
Device housing 6 is fixed.C, rotating contact bar 5 make it be fully located in contact rod aperture 41, will measure planetary gear shaft of the axle 4 from top
Differential is stretched into hole 62 in inserting differential casing 6, then the hole that throw (such as screwdriver) is installed inside cylindrical 61 from bearing
Device housing 6 simultaneously drives contact bar 5 to rotate, and the part of contact bar 5 is stretched out contact rod aperture 41.D, continue into measurement axle 4 make measurement
Planetary gear shaft hole 62 below the insertion of axle 4, and contact bar 5 is contacted with Internal Spherical Surface 63.E, adjustment dial gauge 7 position, make hundred
The gauge outfit of table 7 is divided to contact and depressed on a small quantity with the top plan of measurement axle 4.Keep connecing in F, wheel measuring axle 4, rotary course
Feeler lever 5 is contacted with Internal Spherical Surface 63, the number of degrees change of observation dial gauge 7, if the reading change of dial gauge 7 is located in certain limit
Differential casing Internal Spherical Surface position degree meets the requirements, if the reading change of dial gauge 7 exceedes certain limit in differential carrier body
Spherical surface position degree is undesirable.
Differential casing fixing device 2 can have a variety of specific set-up modes, and the way of recommendation of the present invention is as follows：Differential carrier
Body fixing device 2 includes support base 21 and pressing device；Support base 21 is connected with base 1, and semicircle is provided with support base 21
Bearing install peripheral groove 211；Pressing device includes hinge bearing rod 22, depression bar 23, swingle 25, rotation pole socket 24, clamping sleeve
26 and clamping sleeve drive rod 27；Hinge bearing rod 22 is located at the side of support base 21 and is connected with base 1, swingle 25 and swingle
Seat 24 is located at the opposite side of support base 21, and rotation pole socket 24 is connected with base 1, and swingle 25 is hinged with rotation pole socket 24；Depression bar
23 are located at directly over support base 21, and one end and the hinge bearing rod 22 of depression bar 23 are hinged, and the other end of depression bar 23 is provided with U-lag
231；When swingle 25 is rotated to vertical state, the top of swingle 25 enters U-lag 231, the bottom of clamping sleeve 26 and swingle 25
Screw top is connected, and clamping sleeve 26, which rotates and moved down, can descend moulded rod 23, and the top of clamping sleeve 26 is provided with drive hole；Clamping sleeve drives
Lever 27 passes through drive hole.
The process that the above-mentioned fixing bearing of differential casing fixing device 2 installs cylindrical 61 is as follows：A, two bearings are installed
Cylindrical 61 are put into two bearings respectively installs in peripheral groove 211.B, rotation depression bar 23 make it ride in bearing installation cylindrical 61.C、
Rotating swingle 25 makes its top enter U-lag 231.D, rotatably compress set drive rod 27 make its drive clamping sleeve 26 rotate and under
Move, 26 times moulded rods of clamping sleeve 23, depression bar 23 compresses bearing and installs cylindrical 61.E, set drive rod 27 is rotatably compressed, it is a small amount of to unclamp
Clamping sleeve 26 is rotated further by swingle 25 away from U-lag 231, you can rotation depression bar 23 is installed on cylindrical 61 away from bearing
Side, just can be taken off differential casing 6.It can be seen that this differential casing fixing device 2 has fixed and releases fixed easy to operate
Advantage.
Dial gauge fixing device 3 can have a variety of specific set-up modes, and the way of recommendation of the present invention is as follows：Dial gauge fixes dress
Putting 3 includes fixed vertical rod 31, fixed flat bar 32 and two Top fastening screws 33；Fixed vertical rod 31 is connected with base 1；Fixed flat bar 32
One end is provided with suit hole, and the other end is provided with dial gauge hole, and fixed flat bar 32 is mounted in fixed vertical rod 31 by being set with borehole jack,
The table bar of dial gauge 7 passes through dial gauge hole；One Top fastening screw 33 is connected with fixed flat bar 32 and holds out against fixed vertical rod 31, another
Individual Top fastening screw 33 is connected with fixed flat bar 32 and holds out against the table bar of dial gauge 7.
Above-mentioned dial gauge fixing device 3 is fixed after dial gauge 7, unclamps Top fastening screw 33, and fixed flat bar 32 is rotatable, percentage
Table 7 can be moved up and down.The fixed flat bar 32 of rotation can be away from the surface of differential mechanism receiving space 8, it is to avoid hamper measurements axle 4 is inserted
Enter；The gauge outfit for being rotated back to make dial gauge 7 by fixed flat bar 32 again is contacted with the measurement top planes of axle 4.Move up and down hundred
The gauge outfit that table 7 can ensure dial gauge 7 is divided to contact and compressed on a small quantity with the top plan of measurement axle 4.
Claims (3)
1. differential casing Internal Spherical Surface position degree measurer, it is characterised in that：Including base (1), differential casing fixing device
(2), dial gauge fixing device (3), dial gauge (7), measurement axle (4) and contact bar (5)；Differential casing fixing device (2) number
Measure as two, two differential casing fixing devices (2) are arranged at intervals, two differential casing fixing devices (2) are and base
(1) connect, the space between two differential casing fixing devices (2) is differential mechanism receiving space (8)；Dial gauge (7) is vertical
It is arranged at the top of differential mechanism receiving space (8)；The fixed dial gauge (7) of dial gauge fixing device (3)；Measure on axle (4) along it
It has been radially arranged contact rod aperture (41)；Contact bar (5) can make to connect with contacting rod aperture (41) threaded connection, rotating contact bar (5)
Feeler lever (5) is fully located in contact rod aperture (41) or contact rod aperture (41) is stretched out in part；
During measurement, the bearing that two differential casing fixing devices (2) fix differential casing (6) two ends respectively installs cylindrical
(61), and make bearing that cylindrical (61) level to be installed, the planetary gear shaft hole (62) of differential casing (6) is vertical；Measure axle (4)
Top and the bottom are located in two planetary gear shaft holes (62) respectively, planetary gear shaft hole (62) limitation measurement axle (4) translation；Contact bar
(5) part is stretched out contact rod aperture (41) and contacted with Internal Spherical Surface (63) to be measured, the top plan and dial gauge of measurement axle (4)
(7) gauge outfit contact.
2. differential casing Internal Spherical Surface position degree measurer according to claim 1, it is characterised in that：Differential casing is fixed
Device (2) includes support base (21) and pressing device；Support base (21) is connected with base (1), and half is provided with support base (21)
Circular bearing installs peripheral groove (211)；Pressing device includes hinge bearing rod (22), depression bar (23), swingle (25), swingle
Seat (24), clamping sleeve (26) and clamping sleeve drive rod (27)；Hinge bearing rod (22) is located at the side of support base (21) and and base
(1) connect, swingle (25) and rotation pole socket (24) rotate pole socket (24) and base (1) positioned at the opposite side of support base (21)
Connection, swingle (25) is hinged with rotation pole socket (24)；Depression bar (23) is located at directly over support base (21), one end of depression bar (23)
It is hinged with hinge bearing rod (22), the other end of depression bar (23) is provided with U-lag (231)；Swingle (25) is rotated to vertical state
When, swingle (25) top enters U-lag (231), and clamping sleeve (26) bottom is connected with swingle (25) screw top, clamping sleeve
(26) moulded rod (23) can be descended by rotating and moving down, and clamping sleeve (26) top is provided with drive hole；Clamping sleeve drive rod (27) is passed through
Drive hole.
3. differential casing Internal Spherical Surface position degree measurer according to claim 1, it is characterised in that：Dial gauge fixing device
(3) fixed vertical rod (31), fixed flat bar (32) and two Top fastening screws (33) are included；Fixed vertical rod (31) is connected with base (1)；
Fixed flat bar (32) one end is provided with suit hole, and the other end is provided with dial gauge hole, and fixed flat bar (32) is filled by being set with borehole jack
On fixed vertical rod (31), the table bar of dial gauge (7) passes through dial gauge hole；One Top fastening screw (33) connects with fixed flat bar (32)
Connect and hold out against fixed vertical rod (31), another Top fastening screw (33) is connected with fixed flat bar (32) and holds out against the table of dial gauge (7)
Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693467.2A CN107314729A (en) | 2017-08-14 | 2017-08-14 | Differential casing Internal Spherical Surface position degree measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693467.2A CN107314729A (en) | 2017-08-14 | 2017-08-14 | Differential casing Internal Spherical Surface position degree measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107314729A true CN107314729A (en) | 2017-11-03 |
Family
ID=60176861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710693467.2A Pending CN107314729A (en) | 2017-08-14 | 2017-08-14 | Differential casing Internal Spherical Surface position degree measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107314729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727097A (en) * | 2018-05-01 | 2020-09-29 | 哈如技术研究所股份有限公司 | Processing machine for differential housing |
| CN113483700A (en) * | 2021-06-30 | 2021-10-08 | 西玛特易联（苏州）科技有限公司 | Detection device suitable for positioning shaft hole in differential mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202661011U (en) * | 2012-07-18 | 2013-01-09 | 沈阳上汽汽车变速器有限公司 | Device for detecting sphere bouncing of differential housing |
| CN203992478U (en) * | 2014-07-15 | 2014-12-10 | 重庆大江本大工程机械有限责任公司 | Double-ended boring machine |
| CN204115647U (en) * | 2014-10-11 | 2015-01-21 | 上海汽车齿轮一厂 | Axiality detection device |
| CN104440324A (en) * | 2014-12-29 | 2015-03-25 | 安阳工学院 | Novel clamp for differential mechanism shell inner sphere coarse and fine reaming machine tool |
| CN206065932U (en) * | 2016-08-31 | 2017-04-05 | 山东弘祥机床股份有限公司 | A kind of back axle machining tool |
| CN207019582U (en) * | 2017-08-14 | 2018-02-16 | 四川建安工业有限责任公司 | Differential casing Internal Spherical Surface position degree measurer |
-
2017
- 2017-08-14 CN CN201710693467.2A patent/CN107314729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202661011U (en) * | 2012-07-18 | 2013-01-09 | 沈阳上汽汽车变速器有限公司 | Device for detecting sphere bouncing of differential housing |
| CN203992478U (en) * | 2014-07-15 | 2014-12-10 | 重庆大江本大工程机械有限责任公司 | Double-ended boring machine |
| CN204115647U (en) * | 2014-10-11 | 2015-01-21 | 上海汽车齿轮一厂 | Axiality detection device |
| CN104440324A (en) * | 2014-12-29 | 2015-03-25 | 安阳工学院 | Novel clamp for differential mechanism shell inner sphere coarse and fine reaming machine tool |
| CN206065932U (en) * | 2016-08-31 | 2017-04-05 | 山东弘祥机床股份有限公司 | A kind of back axle machining tool |
| CN207019582U (en) * | 2017-08-14 | 2018-02-16 | 四川建安工业有限责任公司 | Differential casing Internal Spherical Surface position degree measurer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727097A (en) * | 2018-05-01 | 2020-09-29 | 哈如技术研究所股份有限公司 | Processing machine for differential housing |
| CN111727097B (en) * | 2018-05-01 | 2024-01-23 | 哈如技术研究所股份有限公司 | Differential case processing machine |
| CN113483700A (en) * | 2021-06-30 | 2021-10-08 | 西玛特易联（苏州）科技有限公司 | Detection device suitable for positioning shaft hole in differential mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208419819U (en) | A kind of detection revolving body internal-and external diameter beating degree device | |
| CN106767325A (en) | Conduit profile instrument and lining instrument | |
| CN107314729A (en) | Differential casing Internal Spherical Surface position degree measurer | |
| CN209043192U (en) | A kind of bearing machining detection device | |
| KR101011128B1 (en) | Measuring apparatus for inside globe | |
| CN105841587B (en) | A kind of centering measuring apparatus for being used to detect two cross bore centre-to-centre spacing in cross holes | |
| CN207019582U (en) | Differential casing Internal Spherical Surface position degree measurer | |
| CN201463808U (en) | Measuring device for large precisely-bored spigots | |
| CN101173847A (en) | Measurer for measuring distance between off-centering taper hole and periphery of revolution body | |
| CN204043577U (en) | A kind of lever internal bore groove apparatus for detecting diameter | |
| CN103335581B (en) | Female adapter pitch diameter measurement positioning templet and central diameter measuring method | |
| CN104535800A (en) | Novel adjustable test socket cover | |
| CN108917523A (en) | A kind of automobile nave boss size detecting device | |
| CN104121835B (en) | Automobile door assembly gauge | |
| CN204188128U (en) | A kind of floating type coaxality measuring mechanism | |
| CN205561718U (en) | Height measurement device in tapered hood | |
| CN206514785U (en) | Brake-caliper support orthodrome universal check tool | |
| CN114234764A (en) | Quality inspection detection device for size of inner cavity of flywheel housing | |
| CN105783651A (en) | Conical cover internal height measurement device | |
| CN209802267U (en) | Measuring instrument | |
| CN105823455A (en) | Roller pin and roller diameter detector | |
| CN206876072U (en) | A kind of cylindrical jitter detection apparatus of ball-screw | |
| CN106441193A (en) | Tapered roller bearing axial error measuring instrument with measurer being horizontally and longitudinally adjustable | |
| CN101586936B (en) | Cylinder cap virtual crossing point examining tool | |
| CN204479612U (en) | Novel adjustable test jack lid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |