JP4121784B2 - Grip mounting structure for operation lever - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation lever, and more particularly, to a mounting structure for a grip attached to a distal end portion of a lever body.
[0002]
[Prior art]
(a) An operation having a lever main body having a substantially cylindrical shape at the tip, and (b) a cylindrical synthetic resin grip that is integrally attached to the outer peripheral side of the tip of the lever main body. The lever is widely used as various operation members such as a parking brake lever for a vehicle. The parking brake lever described in Japanese Utility Model Laid-Open No. 5-7563 is an example thereof, and a tip portion of the lever body is provided with a plurality of cut-and-raised portions protruding to the outer peripheral side, while the inner peripheral surface of the grip has the cut-and-raised portion. A plurality of engagement holes are provided corresponding to the grip body, and the grip is fitted from the front end side of the lever body so as to get over the cut and raised portion while elastically deforming, and the cut and raised portion is accommodated in the engagement hole. Etc. are engaged to prevent the grip from rotating and coming out. In this way, it is possible to easily and quickly attach the grip to the lever body using an adhesive, and the production cost can be reduced and the time of the adhesive can be reduced. There is no risk that the grip will rotate or come off due to degradation or other reasons.
[0003]
[Problems to be solved by the invention]
However, since the tip of the conventional control lever is a cylindrical member such as a pipe or a long plate material rounded into a cylindrical shape, it is difficult to process the cut-and-raised portion protruding to the outer peripheral side, or it is cut into a plate material. After forming the raised part, it is difficult to process the cylinder into a cylindrical shape, and the shape accuracy of the tip part may be impaired.
[0004]
The present invention has been made against the background of the above circumstances, and its object is to provide a lever body provided with a cut-and-raised portion so that a grip can be integrally attached without using an adhesive. An object of the present invention is to make it possible to easily process a cylindrical tip portion with high accuracy.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, the first invention is as follows: (a) a lever body having a substantially cylindrical tip portion, and (b) an outer peripheral side of the lever body. A control lever having a cylindrical synthetic resin grip; (c) a plurality of engaging protrusions protruding to the outer peripheral side are provided at the tip of the lever main body, while the inner peripheral surface of the grip Is provided with a plurality of engagement recesses corresponding to the engagement protrusions, and the grip is elastically deformed and is fitted from the front end side of the lever body so as to get over the engagement protrusions. A grip mounting structure in which the engaging protrusion is received and engaged to prevent the grip from rotating and coming out, and (d) the lever body has a distal end portion on which the engaging protrusion is A pair of semi-cylindrical shapes provided Are substantially cylindrical shape both sides of which body is abut each other and contact (e) a flange projecting each of the side portions to the outside of the halves member is provided at a predetermined length, the flanges to each other together are a substantially cylindrical shape superimposed in to, while the flange functions as the engaging projection, (f) said engaging recess, corresponding to the flange provided on the inner peripheral surface of the grip With the engagement groove having a predetermined length, the flange end is fitted into the engagement groove when the rear end of the engagement groove moves over the flange in the longitudinal direction by elastic deformation of the grip. The grip is prevented from rotating, and the end of the engagement groove is locked to the end of the flange to prevent the grip from coming out .
[0008]
The back end is based on the fitting direction when the grip is fitted from the distal end side of the lever body, and the front side in the grip fitting direction, that is, the base end side of the lever body means the back side. In the following description, the rear side in the grip fitting direction, that is, the front end side of the lever body is referred to as the near side. However, the fitting form of the grip and the lever main body may be moved either, and is not limited to the case where the grip is fitted close to the lever main body.
[0009]
According to a second aspect of the present invention, in the grip mounting structure for an operating lever according to the first aspect , the flange is provided with a notch, and the engagement groove is moved over the flange in the longitudinal direction by the elastic deformation of the grip. A protruding portion is provided, and the protruding portion is locked to the end portion of the flange as the back end portion of the engaging groove.
According to a third aspect of the present invention, in the grip mounting structure for the operating lever according to the second aspect , the end on the back side of the protrusion is inclined so as to go outward of the grip toward the back side, The end on the near side of the protrusion is perpendicular to the cylindrical axial direction of the lever body.
[0010]
According to a fourth aspect of the present invention, in the grip mounting structure for an operation lever according to any one of the first to third aspects of the invention, (a) the pair of half-cracks are respectively directed toward the outer peripheral side toward the proximal end of the lever body. portion cut and raised awakened cut to the protrude is, before one is provided separately from the flange to function as Kigakarigo projections, (b) an inner circumferential surface of the grip, the cut-and-raised portion Correspondingly , a bottomed engagement hole is provided as the engagement recess separately from the engagement groove, and the rear end of the engagement hole gets over the cut and raised portion by elastic deformation of the grip. The cut-and-raised portion is accommodated in the engagement hole so that they can be engaged with each other.
[0012]
【The invention's effect】
In the grip mounting structure of the operating lever of the first invention, since the front end portion of the lever main body having a plurality of engaging projections are provided is constituted substantially by a pair of half-cracking of the semi-cylindrical shape, pressing the engaging projection It can be easily formed by machining, etc., and both sides of the half-cracked body only need to be brought into contact with each other to form a substantially cylindrical shape, so that the machining of the cylindrical tip of the lever body having the engagement protrusion is facilitated as a whole. The shape accuracy of the tip of the lever body is improved. This, combined with the fact that the grip can be integrally attached to the lever body without necessarily using an adhesive, further improves the productivity and further reduces the production cost. Ru is properly seated.
[0013]
Further, since the flanges provided so as to protrude outward on both side portions of the half-cracked body are used as the engaging protrusions, the processing is further facilitated as compared with the cut and raised portions. In addition, since engagement protrusions (flanges) are provided at the abutting portions on both sides of the half-cracked body, by providing a cut-and-raised portion at the intermediate portion in the circumferential direction of the half-cracked body, Engaging protrusions can be easily provided at four positions located at substantially equal intervals, and the rotation and slipping of the grip can be prevented more reliably, and the deterioration of the operation feeling due to the shift of the grip can be prevented.
[0014]
In the second invention, a notch is provided in the flange and a protrusion is provided in the engagement groove, and the grip is prevented from being pulled out by such engagement. By providing at a plurality of locations in the direction, it is possible to more reliably prevent the grip from coming out.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is disposed rotatably on a support member fixed to a vehicle body, and is mechanically controlled by pulling a brake cable or the like by being gripped and operated by a driver. The present invention is preferably applied to a parking brake lever for a vehicle that generates power, but can also be applied to an operation lever for a vehicle or other vehicle. In the case of a parking brake lever, an insertion hole is generally provided at the tip of the grip so that the release knob protrudes. However, if not necessary, the tip of the grip is completely closed to form a bottomed cylindrical shape. It is also possible.
[0016]
The operation lever is configured to be rotated about the base end portion, for example, like a parking brake lever, but may be configured to rotate about the intermediate portion, or may be a cylindrical tip portion. Various modes are possible, for example, one that can be rotated around the axis.
[0017]
As the lever body, for example, a metal plate material that has been press-processed is preferably used. However, various aspects such as the whole or a part of which is made of a synthetic resin material are possible. It is possible to integrally mold with. The pair of half-broken bodies only need to be configured separately at least at the distal end of the lever body. For example, a single metal plate that is bent into a substantially U shape on the proximal end side of the lever body. Although it can be configured, the lever body is divided into two parts as a whole and connected integrally by connecting means such as rivet caulking, welding, bolts, etc. And the other half-cracked body are formed separately and joined together by welding or the like to form a cylindrical tip portion.
[0018]
Engaging projection is provided on the lever body, while the engagement recess in the grip is provided, along with separate provision of the engaging recess in the lever body and the engaging projection engages with the engaging recess It is also possible to provide the engaging protrusion on the grip.
[0020]
It is desirable for the grip to be fitted into the lever body so that it can be mounted simply by fitting it straight in the axial direction to the tip of the lever body. Various modes are possible, such as rotating around.
[0021]
Of the engaging projection provided on the lever body, the front-side end portion located on the distal end side of the lever body, it is desirable to incline so as to be able to fit the grip easily, the base end side of the lever body In order to prevent the grip from coming out by engaging with the back side end located in the engagement recess, it is desirable that the located back side end be substantially perpendicular to the withdrawal direction, that is, the axial direction of the cylindrical shape. The protrusion provided in the engaging groove in the second invention, not to want to be substantially perpendicular to the proximal end relative to the axial direction of the cylindrical shape with tilting the rear end for the same reason.
[0023]
The notches and protrusions of the second invention are preferably provided at a plurality of positions in the axial direction and engaged at the plurality of positions, but may be provided at only one position in the axial direction. The cut-and-raised portion of the fourth invention is provided, for example, in the center portion in the circumferential direction of the half-cracked body, but can be provided in a plurality of locations in the circumferential direction. A plurality of cylinders can be provided apart from each other in the axial direction.
[0024]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, a parking brake operating device 10 includes a substantially flat sector 12 fixed substantially vertically to a floor of a vehicle body (not shown), and a shaft 12 around the axis of the support pin 14 via the support pin 14. A parking brake lever 16 and the like that are rotatably arranged are provided. The parking brake lever 16 is mainly composed of a lever body 18 made of a metal plate material, and a brake cable 24 is connected to a base end portion 20 via a connecting pin 22, while a substantially cylindrical distal end portion 26. A grip 28 made of synthetic resin is fitted on the outer peripheral side, and the grip 28 is gripped and operated in the clockwise direction of the support pin 14 in FIG. 1, whereby the brake cable 24 is tightened. The parking brake of the wheel that does not work is activated. The parking brake lever 16 corresponds to an operation lever, and the sector 12 corresponds to a support member.
[0025]
The sector 12 is provided with a ratchet 30 along an arc shape centered on the support pin 14, while the parking brake lever 16 has a pawl 32 engaged with the ratchet 30 in parallel with the support pin 14. The pin 34 is rotatably arranged. An insertion hole 29 (see FIG. 2) is provided at the tip of the cylindrical grip 28, and a release knob 38 is disposed so as to be able to be pushed against the urging force of the return spring 36. A release rod 40 is integrally connected to 38. The return spring 36 is a compression coil spring, and is interposed between a locking claw 39 (see FIG. 2) of the lever body 18 and a release knob 38. The release knob 38 protrudes from the grip 28, that is, leftward in FIG. The release knob 38 and the release rod 40 are urged. The other end of the release rod 40 is connected to a pole 32 so as to be rotatable about an axis parallel to the pin 34. The pole 32 is connected to the left in FIG. 1 based on the urging force of a return spring 36. A rotating force acts in the circumferential direction and is engaged with the ratchet 30. When the pole 32 abuts on the sector 12, the projecting dimension of the release knob 38 from the grip 28 is defined.
[0026]
When the parking brake lever 16 is turned clockwise from the original position shown in FIG. 1, the brake cable 24 is tightened and the parking brake is operated. At this time, along with the turning operation, the pole 32 is moved around the sawtooth of the ratchet 30 while being rotated around the pin 34 against the urging force of the return spring 36, and the turning operation is stopped. By maintaining the meshing between the teeth of the ratchet 30 and the pawl 32 that are meshed with each other at this time, the parking brake lever 16 is prevented from returning and the parking brake is maintained in an operating state. On the other hand, when the release knob 38 is pushed against the urging force of the return spring 36 while the parking brake lever 16 is further pulled and held, the pole 32 rotates clockwise to the pin 34 and the ratchet with the pole 32. When the engagement with the parking brake lever 30 is released and the parking brake lever 16 is rotated counterclockwise in this state, the brake cable 24 is loosened and the operation of the parking brake is released.
[0027]
The lever main body 18 of the parking brake operating device 10 is divided into a pair of half-split bodies 42 and 44 that are divided into two by a split surface substantially perpendicular to the axis of the support pin 14, that is, a plane parallel to the paper surface of FIG. In addition to the support pin 14 and the pin 34, the connecting pin 46 is caulked to be integrally connected with the sector 12 and the pole 32 interposed therebetween. It can be rotated integrally around the axis of 14. Of the pair of half-cracks 42 and 44, the portion constituting the tip portion 26 has a substantially semi-cylindrical shape, and the semi-cylindrical portions face each other and both sides are butted against each other to form a cylinder. Form a shape.
[0028]
FIG. 2 is a cross-sectional view showing a tip portion of the parking brake operating device 10, that is, a portion where the grip 28 is attached to the tip portion 26 of the lever body 18, and (a) is a plan view in which the grip 28 is cut away. b) is a front view with the grip 28 cut away, (c) is a cross-sectional view taken along the line CC in (b), and the front view of (b) corresponds to FIG. As apparent from FIG. 2, the cylindrical distal end portion 26 of the lever body 18 is provided with a flange 50 and a cut-and-raised portion 52 as a plurality of engaging protrusions protruding to the outer peripheral side. The peripheral surface is provided with an engagement groove 54 and a bottomed engagement hole 56 as a plurality of engagement recesses.
[0029]
The flange 50 is provided on both sides of the half cracks 42 and 44 so as to protrude outward, and protrudes by a predetermined dimension above and below the tip end portion 26 in a state where the flange 50 is in close contact with each other. In addition, the engagement groove 54 is provided at two positions above and below the grip 28 corresponding to the flange 50, and at a portion corresponding to the notch 58. A protrusion 60 is provided. Then, the grip 28 is made to approach the tip end portion 26 in a substantially straight line from the tip end side of the lever main body 18, that is, from the left direction in FIGS. When fitted on the outer peripheral side, the protrusion 60 functioning as the back end of the engagement groove 54 is fitted over the flange 50 in the longitudinal direction by the elastic deformation of the grip 28 and is fitted into the notch 58. The flange 50 is fitted into the flange 54, and the rotation of the grip 28 is prevented by these engagements, and the protrusion 60 is engaged with the rear end of the flange 50, thereby preventing the grip 28 from coming out. The The front end of the flange 50, that is, the end located on the front end side of the lever body 18, is provided with an inclination, and the rear end of the protrusion 60 is also provided with an inclination. Thus, the protrusion 60 can easily ride on the flange 50 and the grip 28 can be elastically deformed. Further, the rear end portion of the flange 50 and the front end portion of the protrusion 60 that are engaged with each other are substantially perpendicular to the axis of the tip end portion 26, and the protrusion 60 rides on the flange 50 to grip the grip 28. Can be more reliably prevented from exiting.
[0030]
The rear end and the front end are based on the fitting direction of the grip 28 with respect to the distal end portion 26 of the lever body 18, and the rear end is the right side in FIGS. 2 (a) and 2 (b). The front end is the left end in FIGS. 2 (a) and 2 (b).
[0031]
The cut-and-raised portion 52 is cut and raised so as to protrude toward the outer peripheral side toward the base end portion 20 side of the lever body 18 at the intermediate position (center) in the circumferential direction of the half-broken bodies 42 and 44. A plurality (two in the embodiment) are provided apart from each other in the axial direction of the tip portion 26 of the shape, while the engagement holes 56 are provided at two locations on both sides of the grip 28 corresponding to the cut-and-raised portion 52. In addition, two are provided apart from each other in the axial direction. Then, the grip 28 is made to approach the tip end portion 26 in a substantially straight line from the tip end side of the lever main body 18, that is, from the left direction in FIGS. When fitted to the outer peripheral side, the rear end portion of the engagement hole 56 gets over the cut-and-raised portion 52 due to elastic deformation of the grip 28, and the cut-and-raised portion 52 is accommodated in the engagement hole 56. The engagement and the like prevent the grip 28 from rotating and coming out. Since the cut-and-raised part 52 is inclined so as to protrude toward the outer peripheral side toward the rear side in the grip fitting direction, that is, the base end part 20 side of the lever body 18, the grip 28 is easily elastically deformed by the inclination. The grip 28 can be fitted, and the grip 28 is prevented from coming off by the engagement between the tip end of the cut-and-raised portion 52 and the rear end of the engagement hole 56. The locking claw 39 is provided so as to protrude toward the inner peripheral side of the distal end portion 26.
[0032]
Here, in the parking brake lever 16 of the present embodiment, the lever main body 18 is constituted by a pair of half-breaking bodies 42 and 44, and the semi-cylindrical portions provided in the half-breaking bodies 42 and 44 face each other. Since the cylindrical tip portion 26 is formed, the flange 50 and the cut-and-raised portion 52 can be easily formed by pressing or the like, and the semi-cylindrical portions of the half-cracked bodies 42 and 44 are mutually connected. Since it is sufficient to form a substantially cylindrical shape by abutting, the processing of the cylindrical tip portion 26 having such a flange 50 and the cut and raised portion 52 becomes easy as a whole, and the shape accuracy of the tip portion 26 is improved. As a result, coupled with the fact that the grip 28 can be integrally attached to the lever body 18 without necessarily using an adhesive, the productivity of the parking brake lever 16 is further improved and the production cost is further reduced, and the tip end portion 26 is also reduced. On the other hand, the grip 28 is appropriately attached.
[0033]
Moreover, since the flange 50 which functions as an engagement protrusion is provided in the abutting part of the both side parts of the half crack bodies 42 and 44, the cut-and-raised part 52 is provided in the intermediate part of the circumferential direction of the half crack bodies 42 and 44. Thus, it is possible to easily provide engagement protrusions at four locations located at substantially equal intervals around the axial center of the cylindrical tip portion 26, and to further reliably prevent the grip 28 from rotating and coming out. Deterioration of operation feeling due to deviation is prevented.
[0034]
In addition, the flange 50 is provided with a notch 58 and the engaging groove 54 is provided with a protrusion 60, and the engagement thereof prevents the grip 28 from coming out, but the notch 58 and the protrusion 60 are connected to the distal end portion 26. Since the grip 28 is provided at a plurality of positions in the axial direction, the grip 28 is prevented from coming out more reliably.
[0035]
As mentioned above, although the Example of this invention was described in detail based on drawing, this is an embodiment to the last, and this invention implements in the aspect which added various change and improvement based on the knowledge of those skilled in the art. Can do.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a parking brake operating device to which the present invention is applied.
FIGS. 2A and 2B are diagrams showing an attachment structure of a parking brake lever and a grip of the parking brake operating device of FIG. 1, wherein FIG. 2A is a plan view in which the grip is cut out, and FIG. 2B is a front view in which the grip is cut out; (c) is CC sectional drawing in (b).
[Explanation of symbols]
10: Parking brake operating device 16: Parking brake lever (operating lever) 18: Lever main body 26: Tip portion 28: Grip 42, 44: Half-broken body 50: Flange (engaging protrusion) 52: Cut-and-raised portion (engaging protrusion) 54: Engagement groove (engagement recess) 56: Engagement hole (engagement recess) 58: Notch 60: Projection

Claims (4)

A lever body having a substantially cylindrical tip portion;
A cylindrical synthetic resin grip that is integrally attached to the outer peripheral side of the tip of the lever body;
In the operation lever having a plurality of engagement projections projecting to the outer peripheral side are provided at the distal end portion of the lever main body, and a plurality of engagement projections corresponding to the engagement projections are provided on the inner peripheral surface of the grip. A recess is provided, and the grip is elastically deformed and is fitted from the front end side of the lever body so as to get over the engagement projection, and the engagement projection is accommodated in the engagement recess. A grip mounting structure in which rotation and withdrawal of the grip are prevented by being engaged,
The distal end portion of the lever body has a substantially cylindrical shape in which both side portions of a pair of substantially semi-cylindrical shapes provided with the engaging protrusions are butted against each other , and
Flange projecting outwards is provided on both sides of the half-cracked body with a predetermined length, and the flanges are overlapped so that they are in close contact with each other to form a substantially cylindrical shape, and the flange functions as the engagement protrusion. While
The engagement recess is an engagement groove of a predetermined length provided on the inner peripheral surface of the grip corresponding to the flange, and the rear end portion of the engagement groove is elastically deformed by the grip. Over the longitudinal direction, the flange is fitted into the engagement groove to prevent the grip from rotating, and the rear end of the engagement groove is locked to the end of the flange. A grip mounting structure for an operating lever, wherein the grip is prevented from coming off. The flange is provided with a notch, and the engagement groove is provided with a protrusion that extends over the flange in the longitudinal direction by elastic deformation of the grip and enters the notch, and the protrusion is engaged with the engagement groove. 2. The grip mounting structure for an operating lever according to claim 1 , wherein the grip is attached to an end of the flange as a back end of the groove. While the end on the back side of the protrusion is inclined so as to go outward of the grip as it goes to the back side, the end on the near side of the protrusion is formed in the cylindrical shape of the lever body. The grip mounting structure for an operating lever according to claim 2 , wherein the grip is attached at right angles to the axial direction. Wherein the pair of semi-cracking body, each said lever cut-and-raised portions that are cut and bent so as to project toward the outer periphery toward the proximal end side of the body, apart from the flange to function as before Kigakarigo projections While being provided
On the inner peripheral surface of the grip, a bottomed engagement hole corresponding to the cut-and-raised portion is provided as the engagement recess separately from the engagement groove. by overcoming the sections Ri raised portion by elastic deformation of the grip, according to claim 1-3 where it etc. are該切Ri raised portion housed engagement hole is equal to or adapted to be engaged The operation lever grip mounting structure according to any one of the above.

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