CN1771422A - Automotive heat exchanger with fasteners - Google Patents

Abstract

The invention relates to a heat exchanger, in particular for a motor vehicle, comprising a fastening element with a predetermined breaking point, the object of which is to provide a heat exchanger with a recoverable predetermined breaking point which can be easily installed when it is broken. To this end, the invention comprises at least one fastening element comprising a first and a second part, which parts are connected in a quick-release manner, one of the parts being inseparable from the heat exchanger, the two parts being firmly connected together after the quick-release fastening element has been locked, the locking element of one of the parts having at least one predetermined breaking point, the locking element having the predetermined breaking point being located on a part which is separable from the heat exchanger.

Description

Automotive heat exchanger with fasteners

technical field

The invention relates to an automotive heat exchanger comprising a fastener with a predetermined breaking point in accordance with the preamble of claim 1 of the patent.

Background technique

A heat exchanger of the same type as described in EP 0 870 638 is known. The purpose of setting the preset breaking point is to make the heat exchanger detach from the fastener as much as possible without damage in a traffic accident. During maintenance, only the fasteners need to be replaced, which saves maintenance costs. In contrast, if the heat exchanger is firmly fixed on the fasteners, it will definitely cause damage to the heat exchanger in an accident, and the maintenance cost will greatly increase. However, according to the above-mentioned known fixing method of the heat exchanger, the preset breaking point that has been destroyed at one time cannot be recreated during maintenance, and the entire component including the preset breaking point must be replaced, and the replacement part needs to be specially screwed in with bolts on the heat exchanger.

Contents of the invention

The present invention mainly solves such a problem: after the original preset breaking point of the heat exchanger is broken, the preset breaking point with the same effect can be remanufactured in a simple way as possible. On the one hand, the connection method between the new preset breaking point and the heat exchanger needs to be simple; on the other hand, the process of reinstalling the heat exchanger into the bracket also needs to be as simple as possible.

Claim 1 sets forth a solution to this problem.

The other claims explain the mechanism of the invention.

The invention is based on a general idea of arranging a predetermined breaking point on a part of the heat exchanger fastening which is connected to the heat exchanger in a quick-release manner. Its advantage is that the quick release fastener can force the lock to open in the event of a preset break. According to the invention, during maintenance, it is only necessary to replace the part of the heat exchanger fastener that is detachably connected to the quick release fastener.

Examples of quick release fasteners are given in particular in the other claims. Through such quick release fasteners, on the one hand, the heat exchanger and its bracket can be firmly connected; Install the heat exchanger. The last two claims will specifically address this device.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Figure 1 shows the heat exchanger shown in dotted lines, with different quick release fasteners mounted on its upper and lower corners;

Figure 2 is an exploded view of the upper quick release fastener;

Figure 3 is an exploded view of the lower quick release fastener.

Detailed ways

The heat exchanger 1 is shown in dashed lines and is mounted vertically between brackets 4 and 5 by quick release fasteners 2 and 3 .

Heat exchangers are available on the front of the vehicle as cooling components, including water coolers, condensers and blowers. In this example, brackets 4 and 5 merely represent brackets commonly used in automobiles. The liquid inlet and outlet conduits of the heat exchanger must at least be equipped with elastic parts (not shown in the figure) to ensure that when an accident occurs, the preset fracture point will Point fracture, the heat exchanger is separated from the fixed position without damage, on the one hand, the heat exchanger liquid does not overflow, and on the other hand, there is no need to replace the heat exchanger 1 in subsequent maintenance, reducing costs.

The structures and principles of the upper quick release fastener 2 and the lower quick release fastener 3 are different.

The quick release fastener 3 can be understood in more detail through the exploded view in FIG. 3 . The locking form is dovetail joint. The tenon 6 of the quick release fastener 3 is fixed on the heat exchanger 1 and cannot be separated. The notch 7 of the quick release fastener 3 is matched with the tenon 6, and is detachably connected with the bearing 9 in the bracket 5 through the pin 8.

In the event of a preset break, the notch 7 of the quick release fastener 3 acts as a sacrificial piece. In order to achieve this, at least one of the two blocks 10 of the notch 7 must have a notch as a predetermined breaking point 11 .

When the preset fracture occurs, the block 11 with the preset fracture point is forcibly broken, and the fast unlocking fastener below bounces off. During maintenance, only the notch 7 needs to be replaced. The bearing 9 of the lower bracket 5 is preferably an elastic bearing.

Figure 2 shows the structure of the upper quick release fastener 2 through an exploded view. The pin 12 is connected with the heat exchanger 1 and cannot be separated. The sleeve 14 is locked together with the pin 12 , and the sleeve 14 is equipped with a cover 13 . The cover 13 helps the sleeve 14 pass through the hole on the bracket 4 and is detachably interlocked with the bracket 4 . The notch 15 on the sleeve 14 is a predetermined breaking point. An elastic bearing 16 is installed between the locking part of the upper quick release fastener 2 ie the pin 12 and the sleeve 14 .

In the event of a preset break, the notch 15 breaks off, the sleeve 14 of the upper quick release fastener 2 breaks, the pin 12 is released, and the heat exchanger 1 is removed without damage.

In a traffic accident, the predetermined breaking point breaks and the heat exchanger is removed without damage. In this case, the method of reinstalling the heat exchanger during maintenance is as follows.

Parts 7 and 14 of the quick release fasteners 2 and 3 are damaged due to preset breakage and are replaced first during maintenance.

In the first step of reassembly, rejoin the tenon 6 and notch 7 of the quick release fastener. Then the pin 8 connected with the heat exchanger 1 is inserted into the bearing 9 of the bracket 5, because the bearing 9 has elasticity, the heat exchanger 1 can shake up, down, left, and right. In this way, the heat exchanger 1 can be shaken so that the sleeve 14 of the quick release fastener 2 can pass through the bracket 4 and be connected with the pin 12 of the heat exchanger 1 . While the quick release fastener 2 is locked, the sleeve 14 is also fastened with the bracket 4 through the cover 13 connected thereto. At this point, the heat exchanger has been reassembled and the preset breaking point will still function in the event of an accident.

Claims (10)

1. an automotive heat exchanger that comprises the securing member with default breakaway poing is characterized by,

-at least one securing member comprises first and second parts (6,7; 12,14), two parts (6,7; 12,14) form with quick release between connects,

-two parts (6; 12) parts and heat exchanger in are inseparable,

After-quick release securing member is sealed, two parts (6,7; 12,14) tightly connect together,

-two parts (6,7; At least one default breakaway poing is arranged on the closure of parts 12,14),

-this have the closure of default breakaway poing be in the separable parts of heat exchanger (1) (7,14) on.

2. heat exchanger according to claim 1 is characterized by, and the sealed form of first and second parts (6,7) of this securing member is that dovetail engages.

3. heat exchanger according to claim 2 is characterized by, and goes up at least one with the separable parts of heat exchanger (7) and takes piece (10) default breakaway poing is arranged.

4. heat exchanger according to claim 1 is characterized by, and first and second parts (12,14) of an one securing member mesh with form of sleeve.

5. heat exchanger according to claim 4 is characterized by, default breakaway poing be located at two of this securing member with in the parts (12,14) of form of sleeve engagement can with heat exchanger separated components (14) on.

6. according to one of aforesaid right requirement described heat exchanger, it is characterized by, can give prominence to outside closure with heat exchanger (1) separated components (7,14) on the quick release securing member, so that the self-contained bearing on the insertion heat exchanger bracing frame (4,5).

7. according to one of aforesaid right requirement described heat exchanger, it is characterized by, heat exchanger (1) is equipped with the quick release securing member according to claim 2 and 4.

8. according to one of aforesaid right requirement described heat exchanger, it is characterized by, according to the quick release securing member connection heat exchanger (1) and the lower carriage (5) of claim 2, according to the quick release securing member connection heat exchanger (1) and the upper bracket (4) of claim 4.

9. heat exchanger that is installed between the lower carriage, these two supports on a vertical plane, is characterized by substantially,

-heat exchanger (1) is connected in the described quick release mode of claim 2 with lower carriage (5),

-heat exchanger (1) is connected in the described quick release mode of claim 4 with upper bracket (4),

-mesh with separable quick release securing member of heat exchanger and support (4,5).

10. heat exchanger according to claim 9, it is characterized by, make cover tubular (14) according to the detachable component of the quick release securing member of claim 4, sleeve (14) passes corresponding support (4,5) move to the inseparable securing member of heat exchanger on, and sleeve (14) is fixedly connected with corresponding support (4,5).