CN210968629U - Positioning tool for assembling micro gas generator - Google Patents
Positioning tool for assembling micro gas generator Download PDFInfo
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- CN210968629U CN210968629U CN201922171491.7U CN201922171491U CN210968629U CN 210968629 U CN210968629 U CN 210968629U CN 201922171491 U CN201922171491 U CN 201922171491U CN 210968629 U CN210968629 U CN 210968629U
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Abstract
The utility model discloses a positioning tool for assembling a micro gas generator, which comprises a closing punch and an electrode needle positioning core; an air release hole is formed in the closing punch, the shape of the cross section of the air release hole is matched with that of the cross section of the symmetrical groove of the tube shell, the air release hole is matched with the outer wall of the symmetrical groove of the tube shell, and the angle of the tube shell in the closing punch is fixed through the air release hole; two positioning holes are arranged on the top surface of the electrode needle positioning core, the two positioning holes are respectively contacted with two electrode needles of the short-circuit protection limiting device, and the two positioning holes limit the angle fixation of the two electrode needles on the short-circuit protection limiting device; the angle of the closing punch and the angle of the positioning core of the electrode needle are not required to be repeatedly set, two electrode needles on the assembled miniature gas generator short-circuit protection device and symmetrical bilateral grooves at the top of the tube shell form a specific angle, the consistency of products is guaranteed, the qualification rate of the products is improved, and the difficulty in assembling the miniature gas generator caused by the angle errors of the two electrode needles and the symmetrical bilateral grooves at the top of the tube shell is avoided.
Description
Technical Field
The utility model relates to a miniature gas generator processing equipment of air bag, concretely relates to location frock for miniature gas generator assembly.
Background
The automobile safety belt pretensioner is a safety protection device widely applied in the automobile market at present, and effectively protects the safety of passengers by tightening and locking the safety belt before the passengers move due to inertia at the moment of a collision accident of a vehicle. The miniature gas generator comprises a tube shell, a main body and a short-circuit protection device, the miniature gas generator is used as a core component of a safety belt pretensioner, the insertion of two electrode pins on the tail end short-circuit protection device and corresponding joints of an ECU has directional uniqueness, and symmetrical double-side grooves used for mounting and matching the pretensioner are arranged at the top of the tube shell of the miniature gas generator, so that the consistency of the mounting direction of the short-circuit protection device in the production process of the miniature gas generator directly influences the efficiency of the pretensioner production and even the assembly of the whole automobile.
At present, the angles of two electrode needles on the tail end short-circuit protection device and symmetrical double-side grooves at the top of a tube shell can not be ensured mostly in a manual line and a semi-automatic production line of the miniature gas generator, the angles are adjusted by adopting a mode of visual observation of production personnel, the error is large, and the working efficiency of the assembly of the follow-up miniature gas generator in a safety belt pretensioner is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a location frock for miniature gas generator assembly, guarantees that two electrode pins on the short-circuit protection device of tail end and the symmetrical bilateral recess in tube shell top form specific angle.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a positioning tool for assembling a micro gas generator comprises a closing-up punch and an electrode needle positioning core; an air release hole is formed in the closing punch, the shape of the cross section of the air release hole is matched with that of the cross section of the symmetrical groove of the tube shell, the air release hole is matched with the outer wall of the symmetrical groove of the tube shell, and the angle of the tube shell in the closing punch is fixed through the air release hole; the top surface of the electrode needle positioning core is provided with two positioning holes, the two positioning holes are respectively contacted with two electrode needles of the short-circuit protection limiting device, and the two positioning holes limit the angle fixation of the two electrode needles on the short-circuit protection limiting device; under the action of a press machine, the shell is fixedly connected with the short-circuit limiting protection device, and the connected shell groove of the miniature gas generator and the insertion direction of the two electrode needles on the short-circuit protection device can form a fixed included angle. In the assembly process of the micro gas generator, two electrode needles of the short-circuit protection device are inserted into two positioning holes in an electrode needle positioning core, the short-circuit protection device is fixed on the electrode needle positioning core, then a main body is sleeved on the short-circuit protection device, finally a tube shell is sleeved on the main body, the angle of the tube shell is fixed through a gas release hole in a closing-up punch, the two electrode needles of the short-circuit protection device and symmetrical double-side grooves in the tube shell are adjusted to a preset angle, at the moment, the angle positions of the closing-up punch and the electrode needle positioning core are fixed, the closing-up punch closes up the tube shell under the action of a press machine, the tube shell, the main body and the short-circuit protection device are fixedly connected together, the assembly work of the micro gas generator is completed, when the micro gas generator with the same specification is assembled, the angle between the closing-up punch and the electrode needle positioning core does not need to be repeatedly set, and the grooves form a specific angle, so that the consistency of products is ensured, the qualification rate of the products is improved, and the difficulty in assembling the micro gas generator caused by the angle errors of the two symmetrical side grooves at the top of the tube shell due to the two electrode needles is avoided.
Preferably, the edges in the air leakage holes are provided with chamfers; the gas release hole can lock the angular position of the tube shell in the assembling process, the tube shell is closed by the closing-up punch, when the straight edge of the gas release hole is close to the parallel edge of the groove of the tube shell, the straight edge of the gas release hole can be automatically adjusted to the correct position and the position of the tube shell is locked under the action of the dead weight of the tube shell, the position of the tube shell in the gas release hole does not need to be manually adjusted, the labor cost is saved, the safety is improved, and the production efficiency of the assembly of the miniature gas generator is improved.
The device further comprises a base, wherein the base is cylindrical, and a through hole is formed in the end face of the base; the diameter of the through hole is matched with that of the electrode needle positioning core, a first groove is formed in the inner wall of the through hole, and the first groove extends along the axial direction of the through hole; the electrode needle positioning core is arranged in the through hole, and the first positioning lug is matched with the first groove; the electrode needle positioning core is prevented from rotating when the electrode needle positioning core works in the positioning tool, and the problem that products are unqualified or the products are difficult to assemble subsequently due to the fact that the angles of two electrode needles of the short-circuit protection device on the electrode needle positioning core are changed is avoided.
Preferably, a second positioning bump is arranged on the base, the protruding direction of the second positioning bump is the axial direction of the base, and the second positioning bump is used for matching with a groove on the micro gas generator main body; when the two electrode pins are fixed in the two positioning holes, the second positioning lug is matched with the groove on the micro gas generator main body; if rely on the electrode needle to inject product main part position alone, then probably lead to the electrode needle to take place distortion, influence product quality, electrode needle location core and second location lug are to the dual location of product, guarantee positioning accuracy.
The inner wall of the limiting ring is provided with a second groove, the second groove extends along the axial direction of the limiting ring, and the depth direction of the second groove is the radial direction of the limiting ring; the closing-in punch is cylindrical, the outer diameter of the closing-in punch is matched with the inner diameter of the limiting ring, and the outer wall of the closing-in punch is provided with a first bump matched with the second groove; the outer diameter of the base is matched with the inner diameter of the limiting ring, and a second bump matched with the second groove is arranged on the outer wall of the base; the limiting ring is sleeved on the closing punch and the base, the second groove is respectively matched with the first lug and the second lug, and the closing punch and the base cannot rotate relatively due to the limiting ring; the spacing ring makes between binding off drift and the base can not relatively rotate, lets binding off drift and base according to required angle locking, guarantees that the tube is unanimous with two electrode needle contained angles of short-circuit protection device, and more accurate two electrode needle contained angles of guaranteeing shell and short-circuit protection device.
Preferably, the second groove may be a plurality of grooves, and the number of the first protrusions matches the number of the second protrusions. The number of the second grooves affects the position precision between the closing-up punch and the base, the second grooves can be multiple, the position precision between the closing-up punch and the base is improved, and the precision of the groove direction of the tube shell and the specific angle of the two electrode needles of the short-circuit device is improved.
The beneficial effects of the utility model are that 1, a location frock for miniature gas generator assembly, including binding off drift, electrode needle location core, the tube angle in the binding off drift is fixed, and electrode needle location core makes two electrode needle angle fixings on the short-circuit protection device, and two electrode needles on the miniature gas generator short-circuit protection device of assurance assembly form specific angle with the two side recess of tube top symmetry, guarantee the product uniformity, promote the qualification rate of product, avoided causing miniature gas generator assembly difficulty because of two electrode needles and the two side recess angle errors of tube top symmetry.
2. The utility model provides a location frock for miniature gas generator assembly, simple structure, do not need artifical manual adjustment tube in the downthehole position of disappointing, practiced thrift the cost of labor, promoted the security, promoted the production efficiency of miniature gas generator assembly.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural view of a positioning tool for assembling a micro gas generator of the present invention.
Fig. 2 is a schematic structural view of a positioning tooling closing-up punch for assembling a micro gas generator.
Fig. 3 is a schematic structural view of the positioning tool electrode needle positioning core for assembling the micro gas generator.
Fig. 4 is a schematic structural view of a positioning tool base for assembling a micro gas generator of the present invention.
Fig. 5 is a schematic diagram of a positioning tool limiting ring structure for assembling a micro gas generator.
Reference numbers and corresponding part names in the drawings: 1-closing-in punch, 2-air release hole, 3-electrode needle positioning core, 4-positioning hole, 5-base, 6-through hole, 7-first groove, 8-first positioning lug, 9-second positioning lug, 10-limiting ring, 11-second groove, 12-first lug and 13-second lug.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments:
example 1
As shown in fig. 1 to 5, a positioning tool for assembling a micro gas generator comprises a closing punch 1 and an electrode needle positioning core 3; an air release hole 2 is formed in the closing punch 1, the cross section of the air release hole 2 is matched with that of a symmetrical groove of the tube shell, the air release hole 2 is matched with the outer wall of the symmetrical groove of the tube shell, and the angle of the tube shell in the closing punch 1 is fixed through the air release hole 2; two positioning holes 4 are formed in the top surface of the electrode needle positioning core 3, the two positioning holes 4 are respectively in contact with two electrode needles of the short-circuit protection limiting device, and the two positioning holes 4 limit the angle fixation of the two electrode needles on the short-circuit protection limiting device; under the action of a press machine, the shell of the closing-up punch 1 is fixedly connected with the short-circuit limiting protection device, and the connected groove of the shell of the miniature gas generator and the insertion direction of two electrode needles on the short-circuit limiting protection device can form a fixed included angle. In the assembling process of the micro gas generator, two electrode needles of a short-circuit protection device are inserted into two positioning holes 4 on an electrode needle positioning core 3, the short-circuit protection device is fixed on the electrode needle positioning core 3, then a main body is sleeved on the short-circuit protection device, finally a tube shell is sleeved on the main body, the angle of the tube shell is fixed through a gas release hole 2 in a closing-up punch 1, two electrode needles of the short-circuit protection device and a symmetrical double-side groove on the tube shell are adjusted to a preset angle, the angle positions of the closing-up punch 1 and the electrode needle positioning core 3 are fixed, the closing-up punch 1 closes up the tube shell under the action of a press machine, the tube shell, the main body and the short-circuit protection device are fixedly connected together, the assembling work of the micro gas generator is completed, when the micro gas generator with the same specification is assembled, the angle of the closing-up punch 1 and, the two electrode needles on the assembled short-circuit protection device of the micro gas generator are ensured to form a specific angle with the symmetrical bilateral grooves at the top of the tube shell, the consistency of products is ensured, the qualification rate of the products is improved, and the difficulty in assembling the micro gas generator caused by the angle error of the two electrode needles and the symmetrical bilateral grooves at the top of the tube shell is avoided; preferably, the edges in the air leakage holes 2 are provided with chamfers; the tube shell angle position can be locked in the assembly process through the air leakage hole 2, the tube shell is closed by the closing punch 1, when the straight edge of the air leakage hole 2 is close to and parallel to the edge of the groove of the tube shell, the straight edge of the air leakage hole can be automatically adjusted to the correct position and the position of the tube shell can be locked under the action of the dead weight of the air leakage hole, the position of the tube shell in the air leakage hole 2 does not need to be manually adjusted, the labor cost is saved, the safety is improved, and the production efficiency of assembling the micro gas generator is improved.
Example 2
As shown in fig. 1 to 5, the present embodiment is further limited in embodiment 1, and further includes a base 5, where the base 5 is cylindrical, and an end surface of the base 5 is provided with a through hole 6; the diameter of the through hole 6 is matched with that of the electrode needle positioning core 3, a first groove 7 is formed in the inner wall of the through hole 6, and the first groove 7 extends along the axial direction of the through hole 6; the outer wall of the electrode needle positioning core 3 is provided with a first positioning lug 8, the first positioning lug 8 is matched with the first groove 7, the electrode needle positioning core 3 is arranged in the through hole 6, and the first positioning lug 8 is matched with the first groove 7; prevent that electrode needle location core 3 from taking place rotatoryly at location frock during operation, electrode needle location core 3, avoid causing the product unqualified or the follow-up assembly difficulty of product because of two electrode needle angles of short-circuit protection device on the electrode needle location core 3 change. Furthermore, a second positioning bump 9 is arranged on the base 5, the protruding direction of the second positioning bump 9 is the axial direction of the base 5, and the second positioning bump 9 is used for matching with a groove on the micro gas generator main body; when the two electrode pins are fixed in the two positioning holes 4, the second positioning lug 9 is matched with the groove on the micro gas generator main body; if rely on the electrode needle to inject product main part position alone, then probably lead to the electrode needle to take place distortion, influence product quality, electrode needle location core 3 and second location lug 9 guarantee positioning accuracy to the dual location of product. Further, the structure comprises a limiting ring 10, wherein a second groove 11 is formed in the inner wall of the limiting ring 10, the second groove 11 extends along the axial direction of the limiting ring 10, and the depth direction of the second groove 11 is the radial direction of the limiting ring 10; the closing-in punch 1 is cylindrical, the outer diameter of the closing-in punch 1 is matched with the inner diameter of the limiting ring 10, and the outer wall of the closing-in punch 1 is provided with a first bump 12 matched with the second groove 11; the outer diameter of the base 5 is matched with the inner diameter of the limiting ring 10, and the outer wall of the base 5 is provided with a second bump 13 matched with the second groove 11; the limiting ring 10 is sleeved on the closing punch 1 and the base 5, the second groove 11 is respectively matched with the first lug 12 and the second lug 13, and the closing punch 1 and the base 5 cannot rotate relatively by the limiting ring 10; the spacing ring 10 makes the binding off drift 1 and the base 5 can not relatively rotate, let binding off drift 1 and base 5 according to required angle locking, guarantee that the tube and two electrode needle contained angles of short-circuit protection device are unanimous, guarantee more accurately that shell and two electrode needle contained angles of short-circuit protection device. Further, the second groove 11 may be plural, and the number of the first protrusions 12 matches the number of the second protrusions 13. The number of the second grooves 11 affects the position accuracy between the closing punch 1 and the base 5, and the number of the second grooves 11 can be multiple, so that the position accuracy between the closing punch 1 and the base 5 is improved, and the accuracy of the groove direction of the tube shell and the specific angle of two electrode needles of the short-circuit device is improved.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (6)
1. A positioning tool for assembling a micro gas generator is characterized by comprising a closing punch (1) and an electrode needle positioning core (3); an air release hole (2) is formed in the closing punch, the cross section shape of the air release hole (2) is matched with that of the symmetrical groove of the tube shell, the air release hole (2) is matched with the outer wall of the symmetrical groove of the tube shell, and the angle of the tube shell in the closing punch is fixed through the air release hole (2); two positioning holes (4) are formed in the top surface of the electrode needle positioning core (3), the two positioning holes (4) are respectively contacted with two electrode needles of the short-circuit protection limiting device, and the two positioning holes (4) limit the angle fixation of the two electrode needles on the short-circuit protection limiting device; under the action of a press machine, the shell of the closing-up punch (1) is fixedly connected with the short-circuit limiting protection device, and a fixed included angle can be formed between a groove of the shell of the connected micro gas generator and the insertion direction of two electrode needles on the short-circuit limiting protection device.
2. The positioning tool for assembling the micro gas generator as claimed in claim 1, wherein the edges in the air release hole (2) are provided with chamfers.
3. The positioning tool for assembling the micro gas generator as claimed in claim 1, further comprising a base (5), wherein the base (5) is cylindrical, and a through hole (6) is formed in the end face of the base (5); the diameter of the through hole (6) is matched with that of the electrode needle positioning core (3), a first groove (7) is formed in the inner wall of the through hole (6), and the first groove (7) extends along the axial direction of the through hole (6); the electrode needle positioning structure is characterized in that a first positioning lug (8) is arranged on the outer wall of the electrode needle positioning core (3), the first positioning lug (8) is matched with the first groove (7), the electrode needle positioning core (3) is arranged in the through hole (6), and the first positioning lug (8) is matched with the first groove (7).
4. The positioning tool for assembling the micro gas generator as claimed in claim 3, wherein the base (5) is provided with a second positioning bump (9), the protruding direction of the second positioning bump (9) is the axial direction of the base (5), and the second positioning bump (9) is used for matching with a groove on the micro gas generator body; when the two electrode needle angles are fixed in the two positioning holes (4), the second positioning lug (9) is matched with the groove on the micro gas generator main body.
5. The positioning tool for assembling the micro gas generator as claimed in claim 3, further comprising a limiting ring (10), wherein a second groove (11) is formed in the inner wall of the limiting ring, the second groove (11) extends in the axial direction of the limiting ring (10), and the depth direction of the second groove (11) is the radial direction of the limiting ring (10); the closing-in punch (1) is cylindrical, the outer diameter of the closing-in punch (1) is matched with the inner diameter of the limiting ring (10), and the outer wall of the closing-in punch (1) is provided with a first bump (12) matched with the second groove (11); the outer diameter of the base (5) is matched with the inner diameter of the limiting ring (10), and a second bump (13) matched with the second groove (11) is arranged on the outer wall of the base; the limiting ring (10) is sleeved on the closing-up punch (1) and the base (5), the second groove (11) is respectively matched with the first lug (12) and the second lug (13), and the closing-up punch (1) and the base (5) cannot rotate relatively due to the limiting ring (10).
6. The positioning tool for assembling the micro gas generator as claimed in claim 5, wherein the number of the second grooves (11) is plural, and the number of the first protrusions (12) is matched with the number of the second protrusions (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922171491.7U CN210968629U (en) | 2019-12-06 | 2019-12-06 | Positioning tool for assembling micro gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922171491.7U CN210968629U (en) | 2019-12-06 | 2019-12-06 | Positioning tool for assembling micro gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210968629U true CN210968629U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922171491.7U Active CN210968629U (en) | 2019-12-06 | 2019-12-06 | Positioning tool for assembling micro gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210968629U (en) |
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2019
- 2019-12-06 CN CN201922171491.7U patent/CN210968629U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220610 Address after: 621000 Donghua village, Xinqiao Town, Youxian District, Mianyang City, Sichuan Province Patentee after: Sichuan Ruiya Kechuang Automobile Safety Technology Co.,Ltd. Address before: 621000 Donghua village, Xinqiao Town, Youxian District, Mianyang City, Sichuan Province Patentee before: Sichuan huaruiya Automobile Safety Technology Co.,Ltd. |