JPS6233390B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a stop device and more particularly to a one-piece check strap assembly that can be used in limiting the distance of travel between two moving parts.

2 in the design and assembly procedures of various mechanical elements.
It is often necessary to provide a stop device to hold the moving parts at a predetermined distance. This is especially true for hinged doors that are to be held in a particular orientation when fully opened, as it is undesirable and unacceptable for the door to open too wide.
A typical example is the rear panel of a station wagon or the door of a glove box found in the automobile industry, and it is desirable that the door be held in a horizontal position when fully opened.

Hitherto, various devices have been used to meet the above requirements and have been somewhat acceptable. However, conventional methods and structures generally required the use of screws, rivets, or other fastening devices to secure the stop device to the structure. Generally, the assembly techniques required to install these devices are
A large number of expensive parts were required to maintain inventory, and a considerable amount of labor was required to install the various parts provided.

In the case of a car's glove box door, it must be opened and closed a considerable number of times over the life of the car, and the stopping device must be removed each time.
Repairs and services were time consuming and often caused damage to associated components. Further, in the example of using a single strap to stop a glove box door, the minimum number of separate parts to be kept in inventory for replacement or replenishment is three. That is, there is one cable and two threaded fasteners. These threaded fasteners will damage the structure when removed from the structure, so
Often needs to be replaced with a larger fastener. Thus, even with particular efforts to keep the number of parts to a minimum, installation of this type of stop device requires a large number of fasteners and cables.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce the travel distance between two moving parts, to be inexpensive, easy to manufacture, easy to install and remove without damaging associated parts, and to reduce the travel distance between two moving parts. The object of the present invention is to provide a check strap that can be used to restrict

Another object of the present invention is to provide a molded check strap assembly in which the molded push-in pins can be integrally connected and stored as a single product for initial installation, replacement, or replenishment. Our goal is to provide products consisting of:

The above object, and others that will become apparent as the description proceeds, consists of a pair of bosses connected by a resilient link, each boss having a circular inner diameter therethrough. This is accomplished by providing a very simple type of strap that is made of relatively thin walls.

The circular inner diameter portion of each boss has an inclined portion extending toward one end of the boss such that the inner diameter dimension is smallest near one end of the circular inner diameter portion. With the boss positioned within the hole in the structure, a push pin having a cylindrical shank is inserted into the inner diameter of the boss.

The hole on the structure side is such that its minimum inner diameter dimension allows the boss to expand when the push pin is inserted into the boss. A flange is provided at the end of the boss into which the push pin is inserted.
The push pin has a head with a surface facing the flange when it is fully inserted into the inner diameter of the boss. The surfaces of both the push-in pin and the flange are chamfered, creating a groove into which a tool can be inserted when the two are overlapped, allowing the pin to be easily removed by prying it from the boss.

The strap also has parallel elongated members extending from the strap portion near the boss that are inserted into the structure when the boss is inserted to prevent rotation of the boss, thereby causing the strap to attach to the structure. It is adapted to hold the strap in place when assembled.

In a preferred embodiment, the strap and pusher pin are molded as a unitary structure, with each pusher pin integrally connected to a respective boss by a frangible portion of the strap.

The accompanying drawings show illustrative embodiments of the invention. The novel features and advantages of the invention will be apparent from the description that follows.

First, FIG. 1 and FIG. 2 will be explained. The illustrated one-piece strap assembly 10 has a pair of bosses 1 disposed at opposite ends thereof and facing each other.
The elastic link 12 has elastic links 4 and 16. Each boss 14, 16 has a circular flange 18, 20 projecting outwardly from one end of the boss to which the link 12 is connected.

Each boss 14, 16 is provided with a penetrating circular inner diameter portion 22, 24, respectively. The outer diameters of bosses 14, 16 and the diameters of inner diameters 22, 24 are sized to provide relatively thin walls for each boss. The inner diameters 22, 24 slope inwardly at the ends of the bosses 14, 16 opposite their respective flanges from approximately half the length of the inner diameters to their open ends. A plurality of slots 25 extend from the inclined ends of the inner diameter portions 22, 24 along the longitudinal direction of the inner diameter portions to approximately the point where the slope begins.

Adjacent to each boss 14, 16, an elongated member in the form of a cylindrical pin 26, 28 of a diameter significantly more elongated than the boss extends from where the respective flange 18, 20 is connected to link 12. There is.

Push-in pins 30 and 32 are molded into the ends of the flanges 18 and 20, respectively, and each is connected to the flanges by a breakable tab 33. Each push pin 30, 32 has a cylindrical head 3.
4, 36 and cylindrical shaft portions 38, 40.

What is particularly noteworthy in FIG. 2 is that a chamfered surface 41 is provided on the lower side of the push-in pin 20.
Also, the edge of the flange 18 has a similar chamfered surface 4.
2 is provided. Its purpose will become clearer as the explanation progresses. Regarding each feature explained above, the push pins 30, 32
Similarly, since the structures of the boss 14 and the boss 16 are the same, it can be determined that the push pin 32 and the flange 20 of the boss 16 are also provided with similar chamfered surfaces.

In the illustrated embodiment, the strap assembly 10 is injection molded from nylon stock, but other suitable elastic materials that can be injection molded may be used. For typical dimensions of the structure shown in the preferred embodiment, bosses 14 and 16 have an outside diameter of 0.310 inch (7.9 mm) and an inside diameter of 0.268 inch (6.8 mm) with a major inside diameter of 0.160 inch from the end face of the boss. (4.0mm) to the smallest diameter at an angle of 15°. Each push pin 3
The diameter of the 0.32 shank is 0.268 inches (6.8 mm).

Next, FIGS. 3 and 4 will be explained. The strap assembly 10 will now be described as being used to hold a hinged glove box door 50 in fixed relationship to a glove box structure 52. Note that the strap assembly 10 for the door 50 and structure 52
Although the attachment is described only for the end of the assembly that is secured to the door, it will be apparent that the attachment of the opposite end of the assembly to the structure 52 would be done in a similar manner.

3, in preparation for the installation of the strap assembly 10 on the glove box door side, the boss 14 and the cylindrical pin 26 are inserted into the door wall structure with a diameter slightly larger than their outer diameter. A pair of holes 54 and 55 with a diameter of
A hole is drilled on the center line corresponding to the boss and pin.

Next, in order to insert it into the inner diameter part 22 of the boss 14,
Separate push pin 30 from strap assembly 10.

Using known injection molding techniques, the push pin 30 is
and the assembly 10 are dimensioned so that they can be separated by simply twisting them and pulling them apart at the same time.
It is possible to mold the tab 33.

Boss 14 and pin 26 are then inserted into holes 54 and 54, respectively, and pin 30 is pushed into the boss to create the assembled structure shown in FIG. It should be noted that press-fitting the shaft 38 into the inner diameter 22 causes the outer wall of the boss 14 to expand, making it impossible to remove the boss from the wall structure of the door 50. This is because a plurality of slots 25 are provided and the inner diameter portion 22
This is because the end of the boss can protrude outside the hole 54 because it is tapered.

When the glove box door is in the open position,
By aligning the center lines of the holes 54, 55 in the door 50 or the structure 52, the link 12 is prevented from becoming wedged between the door and the structure when the door 50 is closed. Ru. Pin 26 or 28 prevents rotation of boss 14 or 16 so that link 12 moves downwardly into the door opening when the door is closed.

Looking at FIG. 3, it can be seen that when the push-in pin 30 is fully inserted into the boss 14, the chamfered surfaces 41 and 42 form a groove around the circumference of the head 34 of the push-in pin. . This groove allows a screwdriver or other sharp tool to be inserted between head 34 and flange 18 to easily remove pusher pin 30 without damaging any of the parts of the assembly.

The strap assembly 10 can therefore be used in structures that require frequent removal of components, and without compromising the integrity of the structure, i.e., the strap assembly or Any of the connected components can be reused many times without repair.

[Brief explanation of the drawing]

1 is a perspective view of a strap assembly constructed in accordance with the principles of the present invention; FIG. 2 is an enlarged partial sectional front view clearly showing a portion of the strap assembly of FIG. 1; and FIG. 2 is an enlarged partial sectional front view showing the structure of FIG. 2 in an assembled state; FIG. 4 is a perspective view showing a typical surrounding situation in which the strap of FIG. 1 is used; FIG. 10... Check strap assembly, 12... Link, 14, 16... Boss, 18, 20... Flange,
22, 24... Inner diameter part, 25... Slot, 26, 2
8...Cylindrical pin, 30, 32...Push pin, 33
... Tab, 34, 36... Circular head, 38, 40... Cylindrical shaft, 41, 42... Chamfered surface, 50... Glove box door, 52... Same structure, 54,
55...A hole drilled in the wall structure of the door.

Claims (1)

[Scope of Claims] 1. A device comprising a pair of cylindrical bosses and an elastic link connecting the bosses to each other, each boss having an inner diameter extending therethrough so as to form a relatively thin wall. a one-piece check strap assembly, each boss having a push-in pin having a cylindrical head at one end of the cylindrical shaft, the cylindrical head having a cylindrical head that prevents the strap assembly from breaking; integrally connected to said boss by a flexible portion, each said push-in pin having a diameter greater than a minimum diameter of said inner diameter, and each said push-in pin having a diameter greater than a minimum diameter of said inner diameter and inserted into said inner diameter after being separated from said boss; The check strap assembly is characterized in that the boss is expanded outwardly by the push-in pin. 2. The check strap assembly of claim 1, wherein said elastic link is flexible in all directions about its centerline. 3. According to any one of claims 1 and 2, further comprising a pair of elongate members extending from the strap assembly adjacent and parallel to the boss. Check strap assembly as described. 4. The check strap assembly of claim 1, wherein the inner diameter of each boss is sloped toward one end of the boss to provide the minimum diameter. 5. A device according to claim 1, wherein each boss is provided with a plurality of slots passing through the wall of the boss at the minimum diameter. Check strap assembly. 6. Claim 1, wherein each cylindrical boss has a circular flange extending outward from one end thereof, and the elastic link is connected to one side of the flange. A check strap assembly according to any one of items 5 to 6. 7. The check according to any one of claims 1 to 6, wherein the breakable portion connects the cylindrical head of the push-in pin to the circular flange of the boss. Strap assembly. 8. The head of the push-in pin has a surface on the shaft portion side that contacts the surface of the flange when the pin is inserted into the inner diameter portion of the boss, and the surface of the flange and the surface of the head For each of the
Claim characterized in that their opposing edges are chamfered so that a groove is formed between the contact surfaces, and the push-in pin can be easily removed from the boss by a prying action. A check strap assembly according to any one of the ranges 1 to 7.