JPH032857Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a vehicle operation recorder, and more particularly to an operation recorder in which a speed detection section and a recording mechanism section are housed in one case.

[Prior art]

A conventional example of this type of driving recorder will be explained based on FIGS. 6 and 7.

FIG. 6 is an exploded perspective view of the operation recorder. A cover 2 is attached to a cylindrical aluminum die-cast case 1 by a hinge part 3 so that it can be opened and closed freely. A detection unit 5 is housed, and the lower part of the case 1 is closed by a back case 6 made of synthetic resin.

The cover 2 protects the parts inside the case 1 from the outside, and has a speed display scale on its surface, and has a pointer shaft (not shown) protruding from a hole 2a bored in the center, so that the speed can be indicated by the pointer. It's getting old.

The recording mechanism section 4 is mounted on a support plate 7 made of die-cast aluminum, and is slidably attached to two guide arms 8, 9 installed on the support plate 7, and to the guide arms 8, 9. A rack formed on one side of the slider 10 consists of a slider 10, a recording needle (not shown) provided on the slider 10, a recording paper (not shown) on which operation is recorded by the recording needle, and the like. The recording needle 10a meshes with a pinion 11 of a speed detection drive unit 5, which will be described later, and is driven along the guide arms 8 and 9 by the pinion 11, so that the recording needle draws a travel record on the recording paper.

The speed detection drive unit 5 is assembled into a housing 12 and has a drive shaft 13 connected to a vehicle transmission.
, a rotating magnetic field (not shown) formed by a magnet fixed to the drive shaft 13, a guide plate (not shown) placed in the rotating magnetic field and receiving rotational force from an eddy current, and receiving the rotational force of the guide plate. It is composed of an eddy current speed sensor consisting of a hairspring (not shown) or the like, and a pinion 11 provided on a pointer shaft 14 connected to the hairspring.

The recording mechanism section 4 and the speed detection drive section 5 are assembled into the case 1 from above and below, respectively. FIG. 7 is a partial sectional view showing the assembly structure. In the figure, a case 1 integrally has a fixing part 1a inside, and the fixing part 1a is provided with a number of positioning bosses or attachment bosses 1b. This fixed part 1a
The support plate 7 of the recording mechanism section 4 is attached to the mounting boss 1b from the front side of the case 1 with screws 15, and the housing 12 of the speed detection drive section 5 is attached with screws 16 from the back side of the case 1. .
As a result, the rack 10a of the recording mechanism section 4 and the pinion 11 of the speed detection drive section 5 mesh with each other, and the recording mechanism section 4 is connected to the speed detection drive section 5.

[Problem that the invention attempts to solve]

By the way, in the above device, the recording mechanism section 4 and the speed detection drive section 5 are attached to the fixed section integrally provided in the case 1 from two directions, from the front and the back. Since the detection drive section and the detection drive section are gear-coupled, the respective positions relative to the fixed section must be performed accurately. Therefore, the case 1 made of aluminum die-casting has a complicated shape and the mold is expensive, and the fixing part must be precisely finished by cutting after die-casting. Costs will rise.

Furthermore, since the recording mechanism section 4 and the speed detection drive section 5 must be installed after the installation of one is completed, the installation work takes a long time and is inefficient.

Furthermore, as mentioned above, the recording mechanism section 4 and the speed detection drive section 5 cannot be connected until after they are attached to the case, which is extremely inconvenient in checking the functions of both mechanisms.

This invention was made in view of the above drawbacks,
The object of the present invention is to provide a driving recorder in which a recording mechanism section and a speed detection drive section can be easily assembled and manufacturing costs can be reduced.

[Means to solve the problem]

As a means to achieve the above object, the present invention includes a speed detection drive section that detects the vehicle speed rotationally transmitted from the vehicle's transmission, etc., and a recording paper that is meshed with this speed detection drive section and is operated by the speed detection drive section. The driving recorder is equipped with a recording mechanism section on which a driving record is drawn, and the components of the speed detection drive section and the recording mechanism section are mounted on a single support plate, and this support plate is mounted on a cylindrical shape. It is characterized by being fixed inside the case.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 is a divided perspective view of an embodiment of the present invention, and details are omitted as appropriate. The case 1 is made of aluminum die-casting, has a cover 2 attached thereto so as to be openable and closable as in the conventional case, and houses various mechanical parts inside. A fixing part 1a, which will be described later, is integrally formed inside the case 1, and a support plate 17 is inserted into the fixing part 1a from the rear of the case 1 with screws and fixed thereto. This support plate 17 is made of stainless steel,
Two guide arms 8, 9 and slider 1 on the front side
0, a housing 12 of the speed detection drive unit 5 on which the parts of the recording mechanism unit 4 including the recording needle 18 and the like are mounted, and the back side thereof is equipped with a drive shaft 13, a pointer shaft 14, a pinion 11, an eddy current speed sensor, etc. is installed.

FIG. 2 is a sectional view of a drive unit consisting of the recording mechanism section 4 and the speed detection drive section 5 attached to the support plate 17. It shows that the parts are mounted on one support plate.
Note that 18 in the figure is a recording needle of the recording mechanism section 4.

FIG. 3 is a top view of the drive unit, showing the pinion 11 attached to the pointer shaft 14 from the center hole.
is protruding, and the slider 1 is attached to this pinion 11.
The racks 10a formed at 0 are engaged. The slider 10 is guided by guide arms 8 and 9,
A contact 19 consisting of a plurality of conductive parts is provided on one side, and a fixed terminal 20 that slides on this contact 19 as the slider moves short-circuits the contacts, causing a warning lamp that is an intermittent speed indicator of the vehicle. It's starting to light up. In addition, the support plate 17
A plurality of positioning holes 17a are formed around the fixed part 1a of the case 1.
By engaging with the boss formed in the case 1
Accurate positioning is performed.

FIG. 4 is a rear view of the drive unit, in which the housing 12 of the speed detection drive unit 5 is attached to the support plate 1 by screws
In addition to being fixed to
2 performs electrical wiring for the recording mechanism section 4 and the like.

FIG. 5 is a partial sectional view of the case 1, in which a plate-shaped fixing portion 1a is integrally formed on the inner wall of the case 1. The fixing part has a substantially constant thickness and supports the entire drive unit, except that it has a boss (not shown) that fits into the hole 17a of the support plate 17, a boss 1b that fixes the support plate with the screw 23, etc. It is formed into a flat plate with rigidity.

Next, the operation of this embodiment will be explained.

The transmission rotation of the vehicle is transmitted through a flexible cable (not shown) or the like, and the rotation is transmitted to the drive shaft 13.
Rotate. This rotation is detected by the speed sensor of the speed detection drive unit 5, and the pinion 11 is rotated by a predetermined angle depending on the rotation speed. As a result, the pointer (not shown) displays the speed on the scale plate, and the slider 10 is pushed up, causing the recording needle 18 fixed to the slider 10 to move up and down. The recording needle 18 draws an instantaneous velocity on the surface of the recording paper set in the case 1 in accordance with the mission speed. Further, since the slider 10 moves due to the rotation of the pinion 11, the contact 19 is connected to the fixed terminal 20.
It is turned on and off by , and the warning lamp flashes.

To assemble the driving recorder, first attach the recording mechanism section 4, speed detection drive section 5, and other parts to the support plate 17, and then press the support plate 17 against the fixed part 1a of the case 1 from the rear. The fixing portion 1a may be fixed to the boss 1b with the screw 23 while the boss of the fixing portion 1a is engaged with the hole 17a for positioning.

[Effects of the Invention] The present invention is as described above, in which the recording mechanism section and the speed detection drive section are assembled in advance on one support plate, and then fixed to the case. Therefore, since the recording mechanism section and the speed detection drive section are interlocked by gear coupling before the case is attached, it is easy to check the functions during assembly, maintenance, etc. In addition, the recording mechanism section and the speed detection drive section 5
Accurate positioning of the die-cast case only needs to be performed on a single support plate that is separate from the case, so the shape of the die-cast case with the support plate fixing part is simplified, and increases in processing costs are suppressed. At the same time, the installation work to the case becomes easier. Furthermore, since it is unitized on one support plate, there is an advantage that production control becomes easier.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the embodiment of the present invention, Fig. 2 is a sectional view of the drive unit, Fig. 3 is a top view of the drive unit, Fig. 4 is a rear view of the drive unit, and Fig. 5 is a diagram of the drive unit. FIG. 6 is an exploded perspective view of the conventional device, and FIG. 7 is a partial sectional view showing the mounting structure of the drive section of the conventional device. DESCRIPTION OF SYMBOLS 1... Case, 4... Recording mechanism part, 5... Speed detection drive part, 17... Support plate.

Claims (1)

[Scope of utility model registration request] It is equipped with a speed detection drive section that detects the vehicle speed rotationally transmitted from the vehicle's transmission, etc., and a recording mechanism section that meshes with the speed detection drive section and draws a driving record on a recording paper by the operation of the speed detection drive section. A driving recorder in which the components of the speed detection drive section and the recording mechanism section are mounted on a single support plate, and the support plate is fixed within a cylindrical case.