CN111352020A - Synchronous deviation rectifying and locking device for pin shaft - Google Patents
Synchronous deviation rectifying and locking device for pin shaft Download PDFInfo
- Publication number
- CN111352020A CN111352020A CN202010139497.0A CN202010139497A CN111352020A CN 111352020 A CN111352020 A CN 111352020A CN 202010139497 A CN202010139497 A CN 202010139497A CN 111352020 A CN111352020 A CN 111352020A
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- pin
- pin shaft
- cam
- rotating
- seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention provides a synchronous deviation rectifying and locking device for a pin shaft, which comprises a rotary support, a limiting block, a cam, the pin shaft, a spring, a rotary shaft, a handle, a fixed seat and a pin seat, wherein the rotary support is arranged on the rotary support; the rotating shaft comprises a first end, a second end and a third end, wherein the first end and the third end are positioned on the same straight line, the first end and the third end respectively penetrate through the cam to be connected with the rotating support, the first end and the third end of the rotating shaft are sleeved with the limiting blocks and connected with the rotating support through the limiting blocks, the second end is connected with the handle, the handle can drive the rotating shaft to rotate, and the rotating shaft rotates to drive the cam to rotate; the invention has simple structure and simple and convenient operation, and can realize locking and unlocking without an auxiliary tool; the plurality of pin shafts are adopted, so that the stress of the device to be locked is uniform, and the situation that the device to be locked is inclined after being locked is effectively prevented.
Description
Technical Field
The invention relates to the technical field of circuit board detection and installation, in particular to a synchronous deviation rectifying and locking device for a pin shaft, and particularly relates to a double-pin quick synchronous deviation rectifying and locking device suitable for a PCB module.
Background
In the PCB module testing process, the PCB module to be tested needs to be locked on the PCB comprehensive testing equipment, but the locking equipment in the prior art usually adopts the traditional fastening modes such as loosening and screw loosening, the operation is not convenient, and meanwhile, the condition that the stress of the PCB module to be tested is not uniform can also be caused.
Patent document No. CN108012551B discloses a locknut in which a diameter-enlarged portion for inserting a coil spring is formed in the interior of the locknut as described in the related art, and a coupling hole with a thread is formed in the inner peripheral surface of the locknut, and a retainer for preventing the coil spring from coming off to the rear end side of the locknut is formed in a cover made of a material having a hardness smaller than that of the nut body, and in this state, the cover is detachably inserted into and attached to the nut body, and a fixing member for fixing a fixing portion of the coil spring by the cover and the body is provided on the cover. However, this device has many parts, and requires an auxiliary tool for locking, which is troublesome in operation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a synchronous deviation rectifying and locking device for a pin shaft.
The synchronous pin shaft deviation rectifying and locking device provided by the invention comprises a rotary support, a cam, a pin shaft, a spring, a rotary shaft, a handle, a fixed seat and a pin seat; the rotating shaft comprises a first end, a second end and a third end, wherein the first end and the third end are positioned on the same straight line, the first end and the third end respectively penetrate through the cam to be connected with the rotating support, the second end is connected with the handle, the handle can drive the rotating shaft to rotate, and the rotating shaft rotates to drive the cam to rotate;
the cam is provided with two locking and opening positions, when the cam is located at the opening position, the middle part of the rotating surface of the cam is connected with one end of the pin shaft, and the other end of the pin shaft is sleeved with the spring and then inserted into the fixed seat; when the cam is in a locking position, the end part of the rotating surface of the cam is connected with one end of the pin shaft, the other end of the pin shaft is sleeved with a spring and penetrates through the fixed seat to be inserted into the pin seat for locking, and the spring stays in the fixed seat;
the rotary support and the fixed seat are arranged at fixed positions, and the pin seat is arranged on the device to be locked.
Preferably, the number of the cams is more than or equal to two, and the pin shafts are connected with the cams and the springs in a one-to-one correspondence mode.
Preferably, the fixed seat is provided with a plurality of through holes, and the number of the through holes is equal to that of the pin shafts;
a plurality of holes are formed in the pin seat, and the number of the holes is the same as that of the pin shafts; the pin shaft can penetrate through the through hole in the fixed seat and be inserted into the hole in the pin seat.
Preferably, the radial dimension of the through hole on the fixing seat close to one end of the rotating support is larger than that of the spring, and the radial dimension of the through hole on the fixing seat close to one end of the pin seat is smaller than that of the spring.
Preferably, the middle part of the pin shaft is provided with a clamping ring, the radial size of the clamping ring is smaller than that of one end, close to the rotary support, of the through hole in the fixing seat, and the radial size of the clamping ring is larger than that of the spring.
Preferably, slewing bearing, fixing base, key seat are all installed on the direction of motion of round pin axle, the distance along round pin axle direction of motion between slewing bearing and the fixing base matches with the size of cam.
Preferably, the middle part and the end part of the rotating surface of the cam are both cylindrical surfaces, the radius of the cylindrical surface at the middle part of the rotating surface is larger than that of the cylindrical surface at the end part of the rotating surface, and the cylindrical surface at the end part of the rotating surface is a cylindrical surface taking the center line of the rotating shaft as the center.
Preferably, still include the stopper, all overlap on the first end of revolving axle and the third end and establish the stopper and connect the gyration support through the stopper, the stopper includes the bulge, the junction of gyration support and stopper is provided with the recess, the stopper bulge can be at the recess internal rotation under the drive of revolving axle.
Preferably, the groove is formed at an angle of minus, and the rotation angle of the protruding part of the limiting block in the groove is minus.
Preferably, a sliding friction pair is arranged between the cam and the pin shaft, the rotation of the cam can drive the pin shaft to be inserted into the pin seat, the cam rotates reversely, and the pin shaft can be withdrawn from the pin seat to reset through the spring.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has simple structure and simple and convenient operation, and can realize locking and unlocking without an auxiliary tool.
2. The invention adopts a plurality of pin shafts, so that the device to be locked can be uniformly stressed, and the situation that the device to be locked is inclined after being locked is effectively prevented.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of the present invention in an open state.
Fig. 2 is a schematic diagram of the explosive structure of the present invention.
Fig. 3 is a schematic structural view of the pivoting support of the present invention.
Fig. 4 is a schematic structural diagram of the limiting block of the present invention.
The figures show that:
1- -rotating support 6- -rotating shaft
2- -limiting block 7- -handle
3-cam 8-fixed seat
4-pin shaft 9-pin seat
5- -spring
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The invention discloses a synchronous deviation rectifying and locking device for pin shafts, in particular to a synchronous quick deviation rectifying and locking device for double pins for a PCB module. The invention comprises a pin seat 9, a pin shaft 4, a fixed seat 8, a spring 5, a cam 3, a rotary support 1, a handle 7 and the like. Compared with the prior art, the structure of the invention considers the synchronous locking of a plurality of pin shafts, ensures the uniform stress of the bottom of the device to be locked, prevents the stressed deformation of the contact pin caused by unbalance loading locking, and has better operability.
The synchronous pin shaft deviation rectifying and locking device provided by the invention comprises a rotary support 1, a cam 3, a pin shaft 4, a spring 5, a rotary shaft 6, a handle 7, a fixed seat 8 and a pin seat 9, as shown in figures 1-4; the rotating shaft 6 comprises a first end, a second end and a third end, wherein the first end and the third end are positioned on the same straight line, the first end and the third end respectively penetrate through the cam 3 to be connected with the rotating support 1, the second end is connected with the handle 7, the handle 7 can drive the rotating shaft 6 to rotate, and the rotating shaft 6 rotates to drive the cam 3 to rotate; the cam 3 is provided with two locking and opening positions, when the cam is located at the opening position, the middle part of the rotating surface of the cam 3 is connected with one end of the pin shaft 4, and the other end of the pin shaft 4 is sleeved with the spring 5 and then inserted into the fixed seat 8; when the cam is in a locking position, the end part of the rotating surface of the cam 3 is connected with one end of the pin shaft 4, the other end of the pin shaft 4 is sleeved with the spring 5 and then penetrates through the fixed seat 8 to be inserted into the pin seat 9 for locking, and the spring 5 stays in the fixed seat 8; the rotary support 1 and the fixed seat 8 are arranged at fixed positions, and the pin seat 9 is arranged on a device to be locked.
The number of the cams 3 is more than or equal to two, and the pin shafts 4 are correspondingly connected with the cams 3 and the springs 5 one by one. A plurality of through holes are formed in the fixed seat 8, and the number of the through holes is the same as that of the pin shafts 4; a plurality of holes are formed in the pin seat 9, and the number of the holes is the same as that of the pin shafts 4; the pin shaft 4 can penetrate through a through hole in the fixed seat 8 and be inserted into a hole in the pin seat 9. The radial dimension of the through hole on the fixed seat 8 close to one end of the rotary support 1 is larger than that of the spring, and the radial dimension of the through hole on the fixed seat 8 close to one end of the pin seat 9 is smaller than that of the spring. The cam 3 drives the two pin shafts to synchronously extend and retract when rotating.
A clamping ring is arranged in the middle of the pin shaft 4, the radial size of the clamping ring is smaller than that of one end, close to the rotary support 1, of the through hole in the fixed seat 8, and the radial size of the clamping ring is larger than that of the spring 5; the snap ring can block spring 5, makes round pin axle 4 can receive spring 5's effort, easily loosens under the effect of spring force, and stopper 2 can the gyration to 91 at the utmost, when stopper 2 gyration angle exceeded 90 back, has self-locking function under the spring force effect.
Slewing bearing 1, fixing base 8, key seat 9 are all installed on the direction of motion of round pin axle 4, match along the distance of 4 directions of motion of round pin axle and cam 3's size between slewing bearing 1 and the fixing base 8, the distance along 4 directions of motion of round pin axle between 1 pivot central line of slewing bearing and the one end that fixing base 8 is close to slewing bearing 1 slightly is greater than the distance of 3 pivots of cam 3's swivel face upper end to cam 3 distances, slightly is less than the thickness that tip to 3 pivots of cam 3's swivel face under the tip is close to slewing bearing 1 side end to round pin axle 4 to the distance that the round pin axle 4 is close to 1 side end of slewing bearing.
The middle part of the rotating surface and the end part of the rotating surface of the cam 3 are both cylindrical surfaces, the radius of the cylindrical surface at the middle part of the rotating surface is larger than that of the cylindrical surface at the end part of the rotating surface, and the cylindrical surface at the end part of the rotating surface is a cylindrical surface taking the center line of the rotating shaft 6 as the center; the rotating shaft 6 does not rotate, the cam 3 does not rotate, and the pin shaft 4 can be prevented from rebounding under the action force of the spring 5.
As shown in fig. 3 and 4, the synchronous deviation rectifying and locking device for the pin shaft further comprises a limiting block 2, the limiting block 2 is sleeved on the first end and the third end of the rotating shaft 6 and connected with a rotating support 1 through the limiting block 2, the limiting block 2 comprises a protruding part, a groove is formed in the joint of the rotating support 1 and the limiting block 2, and the protruding part of the limiting block 2 can rotate in the groove under the driving of the rotating shaft 6. The opening angle of the groove is 100 degrees, and the rotation angle of the protruding part of the limiting block 2 in the groove is 0-91 degrees; thereby limiting the rotation of the rotating shaft 6 to 0-91 degrees; the cam 3 is an irregular cam, the cam 3 is located at a locking position when the rotating shaft 6 rotates to about 90 degrees, self-locking can be realized under the action of the spring 5 when the rotating shaft rotates to more than 90 degrees, and the end part of the rotating surface of the cam 3 is contacted with the pin shaft 4; when the rotating shaft 6 is at 0 degree, the cam 3 is at an open position, and the middle part of the rotating surface of the cam 3 is contacted with the pin shaft 4. A sliding friction pair is arranged between the cam 3 and the pin shaft 4, the cam 3 rotates to drive the pin shaft 4 to be inserted into the pin seat 9, the cam 3 rotates reversely again, and the pin shaft 4 can be withdrawn from the pin seat 9 to reset through the spring 5.
Example (b):
the synchronous deviation rectifying and locking device for the pin shaft is one of important components of universal PCB comprehensive testing equipment, and has the function of locking a PCB module to be detected on the PCB comprehensive testing equipment; after the test is finished, the locking is released, so that the PCB module can be normally plugged and pulled out; the double-pin synchronous rapid deviation rectifying and locking device for the PCB module mainly comprises a pin seat 9, a pin shaft 4, a fixed seat 8, a spring 5, a cam 3, a rotary support 1 and a handle 7, wherein the handle 7 is in threaded connection with a rotary shaft 6, the cam 3, a limiting block 2 and the rotary support 1 are sequentially installed on the rotary shaft 6, the rotary support 1 is connected with a fixed plane through a screw, the spring 5 is always in a compression state, and the pin shaft 4 is ensured to be tightly attached to the surface of the cam 3. A sliding friction pair is arranged between the pin shaft 4 and the cam 3, and the cam 3 is rotated to drive the pin shaft 4 to move transversely so as to lock and unlock the PCB module; the cam 3 is an irregular cam, and when the cam rotates to about 90 degrees, the cam surface is a cylindrical surface which takes the central line of the rotating shaft as the center, so that the pin shaft 4 can be prevented from rebounding under the action of the spring 5; the two cams 3 with the same size drive the two separated pin shafts 4 to synchronously move, so that the two pin shafts 4 are synchronously plugged and pulled, and the two sides of the PCB module can be stressed and pressed simultaneously by adopting the two pin shafts 4 to be locked simultaneously, so that the contact pins are prevented from being damaged due to the oblique plugging force when the PCB module is oblique; because the bottom of the PCB module is provided with the electric connector, the two ends are simultaneously stressed so as to be more beneficial to protecting the tail contact pin of the connector.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A synchronous pin shaft deviation rectifying and locking device is characterized by comprising a rotary support (1), a cam (3), a pin shaft (4), a spring (5), a rotary shaft (6), a handle (7), a fixed seat (8) and a pin seat (9); the rotating shaft (6) comprises a first end, a second end and a third end, wherein the first end and the third end are located on the same straight line, the first end and the third end respectively penetrate through the cam (3) to be connected with the rotating support (1), the second end is connected with the handle (7), the handle (7) can drive the rotating shaft (6) to rotate, and the rotating shaft (6) rotates to drive the cam (3) to rotate;
the cam (3) is provided with two locking and opening positions, when the cam is located at the opening position, the middle of the rotating surface of the cam (3) is connected with one end of the pin shaft (4), and the other end of the pin shaft (4) is inserted into the fixed seat (8) after being sleeved with the spring (5); when the locking mechanism is in a locking position, the end part of the rotating surface of the cam (3) is connected with one end of the pin shaft (4), the other end of the pin shaft (4) is sleeved with the spring (5), penetrates through the fixed seat (8), is inserted into the pin seat (9) and is locked, and the spring (5) stays in the fixed seat (8);
the rotary support (1) and the fixed seat (8) are arranged at fixed positions, and the pin seat (9) is arranged on a device to be locked.
2. The synchronous pin shaft deviation rectifying and locking device according to claim 1, wherein the number of the cams (3) is greater than or equal to two, and the pin shafts (4) are correspondingly connected with the cams (3) and the springs (5).
3. The synchronous deviation rectifying and locking device for the pin shafts according to claim 1, wherein a plurality of through holes are formed in the fixed seat (8), and the number of the through holes is the same as that of the pin shafts (4);
a plurality of holes are formed in the pin seat (9), and the number of the holes is the same as that of the pin shafts (4); the pin shaft (4) can penetrate through the through hole in the fixed seat (8) and be inserted into the hole in the pin seat (9).
4. The synchronous pin shaft deviation rectifying and locking device according to claim 3, wherein the radial dimension of the through hole of the fixed seat (8) near the end of the rotating support (1) is larger than the radial dimension of the spring, and the radial dimension of the through hole of the fixed seat (8) near the end of the pin seat (9) is smaller than the radial dimension of the spring.
5. The synchronous pin shaft deviation rectifying and locking device according to claim 3, wherein a snap ring is arranged in the middle of the pin shaft (4), the radial dimension of the snap ring is smaller than that of one end, close to the rotary support (1), of the through hole in the fixing seat (8), and the radial dimension of the snap ring is larger than that of the spring (5).
6. The synchronous pin shaft deviation rectifying and locking device according to claim 1, wherein the rotating support (1), the fixed seat (8) and the pin seat (9) are all installed in the moving direction of the pin shaft (4), and the distance between the rotating support (1) and the fixed seat (8) along the moving direction of the pin shaft (4) is matched with the size of the cam (3).
7. The synchronous deviation rectifying and locking device for pin shaft according to claim 1, characterized in that the middle part of the rotating surface and the end part of the rotating surface of the cam (3) are both cylindrical surfaces, the radius of the cylindrical surface at the middle part of the rotating surface is larger than the radius of the cylindrical surface at the end part of the rotating surface, and the cylindrical surface at the end part of the rotating surface is the cylindrical surface centered on the center line of the rotating shaft (6).
8. The synchronous pin shaft deviation rectifying and locking device according to claim 1, further comprising a limiting block (2), wherein the limiting block (2) is sleeved on the first end and the third end of the rotating shaft (6) and connected with the rotating support (1) through the limiting block (2), the limiting block (2) comprises a protruding portion, a groove is formed in the joint of the rotating support (1) and the limiting block (2), and the protruding portion of the limiting block (2) can rotate in the groove under the driving of the rotating shaft (6).
9. The synchronous deviation rectifying and locking device for the pin shaft according to claim 8, wherein the opening angle of the groove is 100 degrees, and the rotation angle of the protruding portion of the limiting block (2) in the groove is 0-91 degrees.
10. The synchronous pin shaft deviation rectifying and locking device according to claim 1, wherein a sliding friction pair is arranged between the cam (3) and the pin shaft (4), the cam (3) rotates to drive the pin shaft (4) to be inserted into the pin seat (9), the cam (3) rotates reversely again, and the spring (5) can enable the pin shaft (4) to be withdrawn from the pin seat (9) to reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139497.0A CN111352020B (en) | 2020-03-03 | 2020-03-03 | Synchronous deviation rectifying and locking device for pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139497.0A CN111352020B (en) | 2020-03-03 | 2020-03-03 | Synchronous deviation rectifying and locking device for pin shaft |
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| CN111352020A true CN111352020A (en) | 2020-06-30 |
| CN111352020B CN111352020B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010139497.0A Active CN111352020B (en) | 2020-03-03 | 2020-03-03 | Synchronous deviation rectifying and locking device for pin shaft |
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| Publication number | Publication date |
|---|---|
| CN111352020B (en) | 2022-02-08 |
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