JP4197855B2 - Coil spring fixing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coil spring fixing structure that can be applied to, for example, an automobile hook device for hanging a shopping bag.
[0002]
[Prior art]
Normally, when the torsion spring is fixed to the base material side, the coil portion of the torsion spring is fitted to the shaft portion erected on the base material side as shown in FIG. 11 of Japanese Utility Model Publication No. 56-46005. The torsion spring is fixed to the base material side by attaching a push-on fix to the tip of the shaft portion.
[0003]
[Problems to be solved by the invention]
At first glance, this conventional fixing structure is structurally simple. However, in the case where it is necessary to remove the torsion spring due to the use of a push-on fix for the holding member, the push-on fixture itself or Unless the shaft is damaged, the torsion spring cannot be removed, and the torsion spring is fixed in the axial direction, so if the push-on fixture stops in the middle of the shaft, the torsion spring will rattle. There is a risk. Furthermore, the push-on fixture requires a dedicated tool for its installation, so it has never been preferable in terms of work.
[0004]
[Means for Solving the Problems]
The present invention was developed in order to effectively solve the problems of the conventional fixing structure. The invention according to claim 1 is provided with a shaft portion on the base material side, and is fitted to the shaft portion. A coil spring fixing structure for fixing the coil spring through a pressing member, and a pair of holding walls for holding the pressing member in the vicinity of the shaft portion of the base member so as to be insertable are formed. A pair of fitting holes for fitting the tip ends of the shaft portions, and when the tip ends of the shaft portions are fitted into the fitting holes of the pressing members, a pair of elastically abutting the inner surfaces of the holding walls. The elastic leg is formed on both sides of the pressing member.
[0005]
According to a second aspect of the present invention, on the premise of the first aspect, the pair of elastic legs is a cantilever elastic piece extending from one end side to the other end side, which is the distal end of the pressing member in the insertion direction, Protrusions that elastically contact the inner surface of the holding wall are provided at the distal end, and the base end of the elastic piece is located on one end side of the pressing member with respect to the fitting hole, and the protruding portion is located on the pressing member with respect to the fitting hole. A configuration located on the other end side was adopted.
[0006]
According to a third aspect of the present invention, on the premise of the first or second aspect, the holding wall is provided with an upper regulating wall portion that regulates the upward movement of the pressing member, and the pressing member intersects the axial direction of the shaft portion. The structure which inserts in a holding wall, making it contact | abut to the said upper control wall part from the direction to do was employ | adopted.
[0007]
The invention according to claim 4 is a coil spring fixing structure in which a shaft portion is provided on the base material side, and the coil spring fitted to the shaft portion is fixed via a pressing member. A holding wall for holding the presser member so that the presser member can be inserted is formed in the vicinity of the part, and a fitting hole for fitting the tip end of the shaft part is formed in the presser member, while the coil spring is a torsion spring and one end thereof Is fixed to the base material side, and the other end thereof is a pin member that engages with a cam groove provided in the moving body, and a structure is provided in which a pressing wall is provided with a restriction wall that restricts the lifting of the pin member.
[0008]
According to a fifth aspect of the present invention, on the premise of the first to fourth aspects, a pair of left and right holding walls for holding the presser member is formed on the base material side, while a guide wall is formed on the presser member and the guide is formed. A configuration is adopted in which the wall is positioned between the pair of left and right holding walls.
[0009]
According to a sixth aspect of the present invention, on the premise of the first to fifth aspects, a support base for supporting the presser member is provided on the substrate side before the tip end of the shaft portion is fitted into the fitting hole of the presser member. Adopted the configuration.
[0010]
Therefore, in the invention described in claim 1, the coil spring can be removed simply by fitting the tip of the shaft portion of the base material into the fitting hole of the holding member held by the holding wall of the base material. In addition to being able to be fixed, the fixing position of the coil spring is also made constant, and a conventional dedicated tool is not required. In addition, since the pair of elastic legs formed on both sides of the pressing member elastically contact the inner surface of the holding wall, unnecessary rattling of the pressing member can be prevented.
[0011]
In the invention according to claim 2, rattling can be prevented without deteriorating the assembling property. According to the third aspect of the present invention, the coil spring can be easily fixed simply by obtaining the guide of the upper restriction wall portion of the holding wall and inserting the pressing member into the protective wall from the side of the shaft portion. In the invention according to claim 4, since the lifting of the pin member is restricted by the restricting wall of the pressing member, there is no fear that the pin member is detached from the cam groove.
[0012]
In the invention according to claim 5, since the guide wall is positioned between the pair of left and right holding walls, the prevention of rotation of the pressing member and the centering effect can be expected. In the invention of claim 6, since the presser member is supported by the support base before the tip end of the shaft portion is fitted into the fitting hole of the presser member, the presser member is inserted into the holding wall. Becomes easy.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on a preferred embodiment illustrated in the drawings. The coil spring fixing structure according to the embodiment is applied to a hook device of an automobile for hanging a shopping bag or the like. Has been developed to fix a torsion spring used in the hook device.
[0014]
First, the hook device will be described. As shown in FIG. 1, the hook device includes a housing 1 as a base material fixed to the rear cargo compartment side of the automobile, and a pivotally supported by the housing 1. The former housing 1 is provided with a pair of flanges 3 that are screwed to the sides of the rear luggage compartment of the automobile on both sides of the housing 1 and below the flanges 3. A pair of shaft holes 4 is formed.
[0015]
Similarly, the latter hook body 2 has a pair of shaft holes 5 formed on both sides thereof, and is pivotable with respect to the housing 1 by the shaft holes 5 and the shafts 6 inserted into the shaft holes 4. The hook body 2 is always urged in a direction protruding outward from the inside of the housing 1 by the spring pressure of the urging spring 7 that is supported and attached to the shaft 6, and shopping bags and the like are suspended on both side edges. The concave hooking portion 8 to be lowered is formed.
[0016]
Further, in addition to this, the hook body 2 is provided with a heart cam 9 and a guide cam 10 at a certain interval on one side, and a cam groove 11 to be engaged with a pin member 22c to be described later is formed on the entire circumference of the heart cam 9. The guide surface 10 a that guides the pin member 22 c toward the inlet of the cam groove 11 is formed on a part of the outer periphery of the guide cam 10.
[0017]
On the premise of such a configuration, the fixing structure according to the present embodiment has a shaft portion 12 on which a coil portion 22a of a torsion spring 22 described later is fitted integrally on one side of the housing 1, and the shaft A pair of left and right holding walls 13 having an inverted L shape for holding a presser member 17 to be described later is inserted in the vicinity of both sides of the portion 12, while a pair of presser members 17 are provided on the insertion port side of each holding wall 13. Before inserting between the holding walls 13, a pair of support bases 14 that support the insertion posture of the pressing member 17 are provided, and a positioning base 15 that positions the one end 22 b of the torsion spring 17 is provided on the opposite side, and the above A configuration is employed in which an opening window 16 is provided between the support bases 14 so that the other end 22c serving as a pin member of the torsion spring 22 faces. Each holding wall 13 described above is provided with an upper restricting wall portion 13a for restricting the upward movement of the pressing member 17 at the bent portion.
[0018]
Further, as shown in FIG. 2, the presser member 17 has a fitting hole 18 for fitting the tip of the shaft portion 12 at the center thereof, and each of the above-mentioned each on the surface side sandwiching the fitting hole 18. A pair of guide walls 19 having a square shape that abuts against the front end edge of the holding wall 13 on the upper regulating wall portion 13a side is formed, while a pair of elastically abutting with the inner surface of the rising side of each holding wall 13 on both sides. The elastic leg 20 is formed, and a restriction wall 21 for restricting the lifting of the other end portion 22c serving as a pin member of the torsion spring 22 is provided on the upper side of the back surface.
[0019]
The torsion spring 22 is fixed to the housing 1 side via the presser member 17, and the linear end portion 22b extending from the coil portion 22a is positioned on the positioning table 15 and bent in the reverse direction. The end 22c is engaged with the cam groove 11 as a pin member to provide a locked state and an unlocked state of the hook body 2 with respect to the housing 1.
[0020]
Therefore, when the hook body 2 is pivotally supported on the housing 1 via the shaft 6 and the biasing spring 7 and the torsion spring 22 is fixed to the housing 1 side, first, as shown in FIG. While the coil portion 22a of the spring 22 is fitted to the shaft portion 12 on the housing 1 side, the one end portion 22b of the torsion spring 22 is positioned on the positioning base 15, and at the same time, the other end portion 22c serving as a pin member of the torsion spring 22 is provided. After facing the open window 16, as shown in FIG. 4, the holding member 17 is supported by the support base 14 described above and is brought into contact with the upper regulating wall 13 a from the direction intersecting the axial direction of the shaft 12. However, when inserted into the pair of left and right holding walls 13, the pair of guide walls 19 of the pressing member 17 comes into contact with the leading edge of the corresponding holding wall 13 on the upper regulating wall portion 13 a side, and the pressing member 17 is centered. Since being ring is inserted into the pair of holding walls 13, never pressing member 17 is rotated. At this time, if the presser member 17 is inserted from the opposite side, the restricting wall 21 protrudes from the protruding portion 15a of the positioning base 15 before the fitting hole 18 of the presser member 17 reaches the tip of the shaft portion 12. In this case, further insertion is prevented, so that erroneous assembly is effectively prevented.
[0021]
Then, as shown in FIGS. 5 and 6, the tip end of the shaft portion 12 is fitted into the fitting hole 18 of the holding member 17, and the insertion of the holding member 17 into the pair of holding walls 13 is completed. The torsion spring 22 is securely fixed to the housing 1 side. In this state, the one end portion 22b of the torsion spring 22 is also fixed to the positioning base 15 side. The fixing position of the torsion spring 22 becomes constant. Further, since the pressing member 17 elastically abuts the elastic leg 20 formed on its side to the inner surface of the corresponding holding wall 13 on the rising side, there is no risk of inadvertent rattling. Furthermore, since the protrusion 23 is provided on the inner surface of the upper restriction wall portion 13a of each holding wall 13, the protrusion 23 can also prevent the pressing member 17 from rattling.
[0022]
For this reason, in the present embodiment, the presser member 17 is simply inserted into the pair of holding walls 13 without using a dedicated tool as in the prior art, and the shaft is inserted into the fitting hole 18 of the presser member 17. Since the torsion spring 22 can be securely fixed to the housing 1 side by simply fitting the tip of the portion 12, it goes without saying that the fixing work is improved, but the presser member 17 is slightly lifted to fit the fitting hole. If the tip of the shaft portion 12 is removed from 18, the fixed state of the torsion spring 22 can be easily released, so that the torsion spring 22 can be sufficiently replaced.
[0023]
In actual use, although not specifically shown, the housing 1 is fixed to the side surface of the rear cargo compartment of the automobile via the flange 3 and is stored and locked in the housing 1. When 2 is slightly pressed, the other end portion 22c serving as a pin member of the torsion spring 22 is released from the lock portion of the cam groove 11, and the locked state is released. , Projecting from the housing 1. Therefore, after that, if a shopping bag or the like is hooked on the hooking portion 8 of the protruding hook body 2, the shopping bag or the like can be easily suspended.
[0024]
On the other hand, when the hook body 2 is not used, when the hook body 2 protruding from the housing 1 is rotated toward the housing 1 side, the other end 22c serving as a pin member is now moved to the inlet side of the cam groove 11. Since it is guided and moves in the cam groove 11 and engages with the lock portion, the hook body 2 is locked inside the housing 1.
[0025]
In addition, when the other end 22c serving as the pin member of the torsion spring 22 moves along the cam groove 11 when the hook body 2 is locked and unlocked, the other end is caused by the restriction wall 21 of the pressing member 17. Since the lifting of 22c can be effectively prevented, the other end 22c serving as a pin member never comes off the cam groove 11.
[0026]
【The invention's effect】
As described above, according to the present invention, by adopting the above configuration, the coil spring can be removed simply by fitting the tip of the shaft portion of the base material into the fitting hole of the holding member held by the holding wall of the base material. In addition to being able to be fixed, the fixing position of the coil spring is also made constant, and a conventional dedicated tool is not required. In addition, since the pair of elastic legs formed on both sides of the pressing member elastically contact the inner surface of the holding wall, unnecessary rattling of the pressing member can be prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an automobile hook device to which a fixing structure according to an embodiment of the present invention is applied.
2A is a front view of a pressing member, FIG. 2B is a bottom view thereof, and FIG. 2C is a cross-sectional view thereof.
FIG. 3 is a perspective view of a main part showing a state in which a torsion spring is fitted to a shaft portion on the housing side.
4A is a perspective view of a main part showing a state in which a presser member is supported by a support on the housing side, and FIG. 4B is a cross-sectional view of the same.
FIG. 5 is a main part perspective view showing a state in which the torsion spring is fixed to the housing side via a pressing member.
FIGS. 6A and 6B are cross-sectional views showing a state in which the torsion spring is fixed to the housing side via a pressing member from different directions. FIGS.
[Explanation of symbols]
1 Housing (base material)
2 Hook body (moving body)
3 Flange 4 Shaft hole 5 Shaft hole 6 Shaft 7 Energizing spring 8 Hooking portion 9 Heart cam 10 Guide cam 10a Guide surface 11 Cam groove 12 Shaft portion 13 Holding wall 13a Upper restriction wall 14 Supporting base 15 Positioning base 15a Protruding part 16 Opening window 17 Presser member 18 Fitting hole 19 Guide wall 20 Elastic leg 21 Restriction wall 22 Torsion spring (coil spring)
22a Coil part 22b One end part 22c The other end part (pin member)
23 Protrusions

Claims (6)

  A coil spring fixing structure in which a shaft portion is provided on the substrate side and the coil spring fitted to the shaft portion is fixed via a pressing member, and the pressing member can be inserted in the vicinity of the shaft portion of the substrate. A pair of holding walls to be held at the same time, a fitting hole for fitting the tip of the shaft portion is formed in the holding member, and the tip of the shaft portion is fitted into the fitting hole of the holding member. A structure for fixing a coil spring, wherein a pair of elastic legs elastically contacting each inner surface of each holding wall is formed on both sides of the pressing member.   The pair of elastic legs is a cantilevered elastic piece extending from one end side, which is the distal end in the insertion direction of the presser member, to the other end side. 2. The elastic member according to claim 1, wherein a base end of the elastic piece is positioned on one end side of the pressing member with respect to the fitting hole, and the protrusion is positioned on the other end side of the pressing member with respect to the fitting hole. Fixed structure of coil spring.   An upper restricting wall portion that restricts the upward movement of the presser member is provided on the holding wall, and the presser member is inserted into the holding wall from the direction intersecting the axial direction of the shaft portion while being in contact with the upper restricting wall portion. The structure for fixing a coil spring according to claim 1, wherein the structure is fixed.   A coil spring fixing structure in which a shaft portion is provided on the substrate side and the coil spring fitted to the shaft portion is fixed via a pressing member, and the pressing member can be inserted in the vicinity of the shaft portion of the substrate. And forming a fitting hole for fitting the tip of the shaft portion to the holding member, while the coil spring is a torsion spring, one end of which is fixed to the base material side, The other end of the coil spring is a pin member that engages with a cam groove provided in the moving body, and the holding member is provided with a restriction wall that restricts the lifting of the pin member.   A pair of left and right holding walls for holding the pressing member is formed on the substrate side, and a guide wall is formed on the pressing member, and the guide wall is positioned between the pair of left and right holding walls. The structure for fixing a coil spring according to any one of claims 1 to 4.   The support base for supporting the presser member is provided on the base material side before the tip end of the shaft portion is fitted in the fitting hole of the presser member, according to any one of claims 1 to 5. Coil spring fixing structure.

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