Elastic suspension fixing structure suitable for closed frame of automobile

Abstract

The utility model relates to a fixing structure, in particular to an elastic suspension fixing structure suitable for a closed frame of an automobile, and belongs to the technical field of assembly of automobile parts. An equipment frame is arranged on the inner side of the closed frame and assembled on the closed frame through an elastic suspension fixing structure, the elastic suspension fixing structure comprises an upper connecting plate, a damping cushion, a fixing seat, a lower connecting plate and a fixing bolt, the lower connecting plate and the fixing seat are welded in advance, and the upper connecting plate and the lower connecting plate are respectively vulcanized with the damping cushion into a whole. Internal threads matched with the fixing bolt are machined in the center in the fixing base, and the fixing bolt is assembled with the fixing base through the internal threads. After the fixing structure is assembled, the arrangement of parts, pipelines and the like in the closed frame of the automobile is not influenced at all; and the structure is simple, the operation is simple and convenient, the device is applied to the assembly of closed structures in various occasions, and the device has certain universality, and is economical and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fixed structure, specifically a elastic suspension fixed structure suitable for a closed automobile frame, and belongs to the technical field of automobile parts assembly. BACKGROUND

[0002] With the continuous development of automobile technology, consumers have higher and higher requirements on automobiles in all aspects, and users pay more and more attention to vehicle safety, damping performance, and service life of various components on the vehicle.

[0003] According to the applicant's understanding, some electronic devices such as current converters, motor controllers, electronic steering pumps, air conditioner compressors, and electronic water pumps are installed on a device rack due to layout needs in a new energy automobile, and the device rack is combined with the electronic devices to be installed on the frame and fixed to the longitudinal beam. Figure 1 To prevent the electronic devices from being impacted, rubber damping cushions need to be added between the device rack and the frame to absorb the vibration generated when the vehicle is running on the road and reduce the impact on the electronic devices, so as to ensure normal operation of the electronic devices and prolong the service life of the electronic devices. The device rack is installed on the longitudinal beam of the frame, and the longitudinal beam and the reinforcing plate form an incomplete closed structure at the installation position. Figure 2 However, Figure 2 In the connection, when some more pipelines and wire harnesses exist in the area inside the frame, the above-mentioned device rack needs to occupy more space inside the frame due to the need for the bushing and the bolt during fixation, which makes it difficult for the wire harnesses and pipelines inside the longitudinal beam of the frame to pass through. Since this place is in a closed state, it is difficult to operate even if it is operated, and improper implementation may damage the pipelines or wire harnesses. Therefore, Figure 2 the existing fixing structure is not suitable in this case. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at the problems existing in the prior art and provides an elastic suspension fixed structure which is simple to install, reliable to use, good in universality, suitable for a closed automobile frame, and can be used in many occasions for closed structure assembly without affecting the arrangement of other nearby components or with little influence on the nearby components.

[0005] In order to achieve the above object, the utility model relates to a kind of elastic suspension fixed structure suitable for automobile closed frame, the inside of closed frame has equipment rack, it is characterized by: the equipment rack is assembled on closed frame by elastic suspension fixed structure, and the elastic suspension fixed structure includes upper connecting plate, damping cushion, fixed seat, lower connecting plate and fixed bolt, fixed seat one end is connected with lower connecting plate, and the other end of fixed seat is connected closed frame, and upper connecting plate and lower connecting plate are vulcanized with the opposite side end surface of damping cushion respectively, and fixed seat center hole is processed with fixed bolt matching internal thread, and fixed bolt is assembled with fixed seat by internal thread.

[0006] Further, the fixed seat is integrally connected by nut cover and expansion rod, the expansion rod is cylindrical and the end is chamfered and reduced in diameter, the bottom center is cut into cross shape and four expansion claws are formed after the same four arcuate blocks are cut off, the expansion rod is pre-inserted through the center hole of lower connecting plate, and the nut cover covers the center hole of lower connecting plate, and the covering part is welded to connect the fixed seat and lower connecting plate, the side end surface of damping cushion is vulcanized and bonded on lower connecting plate except the periphery of nut cover, and the nut cover is placed in the center through hole of damping cushion, the other side end surface of damping cushion is vulcanized and bonded on upper connecting plate, and the center through hole of upper connecting plate is maximally communicated with the center through hole of damping cushion, according to the above connection, then the expansion rod is inserted into the assembly hole of closed frame, the fixed bolt is connected with the internal thread of fixed seat through the center through hole of upper connecting plate and the center through hole of damping cushion, until the end of fixed bolt opens the reduced diameter structure of expansion rod and expands the four expansion claws, so that the expansion rod is expanded in the assembly hole of closed frame, the elastic suspension fixed structure is assembled on the closed frame, and the equipment rack is connected through upper connecting plate to complete the fixing work of elastic suspension fixed structure; in non-working state, the fixed bolt remains free or does not act on the reduced diameter structure of expansion rod.

[0007] Further, the diameter of the center through hole of upper connecting plate and the center through hole of damping cushion is greater than the diameter of the head of fixed bolt.

[0008] Further, the damping cushion is hollow cylindrical, the lower connecting plate is circular plate, and the diameter of lower connecting plate is at least equal to the diameter of damping cushion; the diameter of nut cover of fixed seat is greater than the diameter of center hole of lower connecting plate, and the center hole of lower connecting plate is transitionally matched with the expansion rod of fixed seat.

[0009] Further, the left and right sides of upper connecting plate have connecting holes, and the left and right connecting holes are matched with equipment rack through bolt and nut.

[0010] Further, the upper connecting plate, damping cushion, fixed seat, lower connecting plate and fixed bolt are made of steel material.

[0011] The utility model discloses a flexible suspension fixing structure of closed automobile frame mainly adopts upper connecting plate, damping cushion, fixed seat, lower connecting plate and fixed bolt, and upper and lower connecting plates play the role of upper and lower connection, and upper and lower connecting plates are vulcanized into an organic whole with damping cushion respectively first, and damping cushion also plays very good damping effect between them, however fixed bolt cooperates with fixed seat, can see that the device reduces the number of assembly parts, and is easy to assemble, and completely solves the defect problem of background art. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in connection with the drawings.

[0013] Figure 1 It is the assembly state schematic view of equipment frame and closed frame longitudinal beam under prior art.

[0014] Figure 2 It is Figure 1 partial enlarged schematic view.

[0015] Figure 3 It is the main part exploded schematic view of the utility model.

[0016] Figure 4 It is fixed seat structure schematic view of the utility model.

[0017] Figure 5 It is Figure 4 front view.

[0018] Figure 6 It is Figure 4 central section view schematic view.

[0019] Figure 7 It is structure schematic view of the utility model.

[0020] Figure 8 It is the assembly partial state schematic view of the utility model and closed frame.

[0021] Figure 9 It is the schematic view of the utility model after equipment frame and closed frame assembly.

[0022] Figure 10 It is Figure 9 partial enlarged schematic view.

[0023] Wherein: A-closed frame, B-equipment frame, G-flexible suspension fixing structure, a-assembly hole, 1-upper connecting plate, 2-damping cushion, 3-fixed seat, 31-nut cover, 32-expansion rod, 321-reducing structure, 322-expansion claw, 4-lower connecting plate, 5-fixed bolt. DETAILED DESCRIPTION

[0024] The embodiment one provides a flexible suspension fixing structure for a closed frame of a car, as shown in the figure Figure 3 Figure 10 The inside of the closed frame A has a device frame B, which is assembled on the closed frame A through the flexible suspension fixing structure G. The flexible suspension fixing structure G includes an upper connecting plate 1, a damping cushion 2, a fixing base 3, a lower connecting plate 4 and a fixing bolt 5. One end of the fixing base 3 is connected with the lower connecting plate 4, and the other end of the fixing base 3 is connected with the closed frame A. The upper connecting plate 1 and the lower connecting plate 4 are vulcanized with opposite side end surfaces of the damping cushion 2. The center hole of the fixing base 3 is processed with internal threads matched with the fixing bolt 5. The fixing bolt 5 is assembled with the fixing base 3 through the internal threads, as shown in Figure 3 , 4 , 5, 6, 7. In this embodiment, in combination with Figure 3 : The damping cushion 2 is in a hollow cylindrical shape, and the lower connecting plate 4 is in a circular plate shape. The diameter of the lower connecting plate 4 is at least equal to the diameter of the damping cushion 2. The diameter of the fixing base nut cover is greater than the diameter of the center hole of the lower connecting plate. The center hole of the lower connecting plate is in a transition fit with the expansion rod of the fixing base.

[0025] In combination with Figure 4 , 5 , 6: The fixing base 3 is integrally connected with the nut cover 31 and the expansion rod 32. The expansion rod 32 is in a cylindrical shape and has a chamfered end structure 321. The bottom center of the expansion rod 32 is cut into a cross shape and forms four expansion claws 322 after the same four arc-shaped blocks are cut off. The expansion rod 32 is previously inserted through the center hole of the lower connecting plate 4 so that the nut cover 31 covers the center hole of the lower connecting plate 4, and the covering part is welded to connect the fixing base 3 with the lower connecting plate 4. The damping cushion 2 is vulcanized and bonded to the lower connecting plate 4 on the side end surface except the peripheral area of the nut cover 31, and the nut cover 31 is placed in the center through hole of the damping cushion 2. The other side end surface of the damping cushion 2 is vulcanized and bonded to the upper connecting plate 1, and the center through hole of the upper connecting plate 1 is in maximum communication with the center through hole of the damping cushion 2. The diameter of the center through hole of the upper connecting plate 1 and the center through hole of the damping cushion 2 is greater than the diameter of the head of the fixing bolt 5, as shown in Figure 7 . According to the above connection, the expansion rod 32 is inserted into the assembly hole a of the closed frame A. The fixing bolt 5 is connected with the internal threads of the fixing base 3 by penetrating the center through hole of the upper connecting plate 1, the center through hole of the damping cushion 2 and the center through hole of the lower connecting plate 4. Until the end of the fixing bolt 5 pushes open the reduced diameter structure 321 of the expansion rod 32 and expands the four expansion claws 322, the expansion rod 32 is expanded to tightly fit in the assembly hole a of the closed frame A, so that the flexible suspension fixing structure G is assembled on the closed frame A. Then the upper connecting plate 1 is connected with the device frame B to complete the fixing work of the flexible suspension fixing structure G. In the non-working state, the fixing bolt 5 is in a free state or does not act on the reduced diameter structure 321 of the expansion rod 32, as shown in Figure 7 .

[0026] ​​​The above-mentioned elastic suspension fixing structure is fixed in operation, and is combined with Figure 8 、 9 , 10: first, the expansion rod 32 of the fixing base 3 in the structure is put into the assembly hole a, and then the fixing bolt 5 is screwed with the internal thread of the fixing base 3 by using a conventional tool socket wrench. The former uses the socket wrench to operate the fixing bolt 5, and the expansion rod 32 generates stress inside. Therefore, when the fixing bolt 5 passes through the reduced diameter structure 321 at the end of the expansion rod 32, the reduced diameter structure 321 is pushed open, and the four expansion claws 322 of the expansion rod 32 are deformed and changed in position by expanding outward, so as to tighten the expansion rod 32 in the assembly hole a.

[0027] In the above-mentioned embodiment, the left and right sides of the upper connecting plate 1 have connecting holes, and the left and right connecting holes are connected to the equipment rack by cooperating with the bolts and nuts. The upper connecting plate 1, the damping cushion 2, the fixing base 3, the lower connecting plate 4 and the fixing bolt 5 are made of steel material, so that the fixing structure is more stable in operation, and the stability and service life during fixing can be greatly improved.

[0028] In summary, the elastic suspension fixing structure of the closed frame significantly solves the defects of the prior art Figure 1 、 2 . The wire harness and the pipeline are randomly shuttled in the longitudinal beams of the two closed frames, and the elastic suspension fixing structure G only needs to be configured with an assembly hole a at the corresponding installation position, without the need to increase other assembly parts (such as threaded holes, welded nuts, etc.). At the same time, no additional assembly process and workpieces (such as wrenches and tightened nuts) are required, so as to simplify the number of parts in the fixing part. It can also be used in many closed structure assemblies, which is economical and practical, and the structure is simple, the operation is simple, and the stability is strong.

[0029] In addition to the above-mentioned embodiments, the utility model can also have other implementation manners. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. A flexible suspension fixing structure for a closed frame of an automobile, the closed frame having an equipment rack on the inside, characterized by: The equipment rack is assembled on the closed frame through the elastic suspension fixing structure, the elastic suspension fixing structure comprises an upper connecting plate, a damping cushion, a fixing seat, a lower connecting plate and a fixing bolt, one end of the fixing seat is connected with the lower connecting plate, the other end of the fixing seat is connected with the closed frame, the upper connecting plate and the lower connecting plate are vulcanized with opposite side end faces of the damping cushion, a center hole of the fixing seat is processed with an internal thread matched with the fixing bolt, and the fixing bolt is assembled with the fixing seat through the internal thread.

2. The elastic suspension fixing structure for a closed frame of an automobile according to claim 1, wherein: The fixing seat is integrally connected with a nut cover and an expansion rod, the expansion rod is in a cylindrical shape and has a chamfered structure with a reduced diameter at the end, four expansion claws are formed by cutting a cross-shaped hole in the bottom center and cutting off the same four arc-shaped blocks, the expansion rod is previously inserted through a center hole of the lower connecting plate, the nut cover covers the center hole of the lower connecting plate, and the covering part is welded to connect the fixing seat and the lower connecting plate, one side end face of the damping cushion is vulcanized and bonded to the lower connecting plate except the periphery of the nut cover, the nut cover is arranged in a center through hole of the damping cushion, the other side end face of the damping cushion is vulcanized and bonded to the upper connecting plate, the center through hole of the upper connecting plate is maximally communicated with the center through hole of the damping cushion, and then the expansion rod is inserted into an assembly hole of the closed frame, the fixing bolt is connected with the internal thread of the fixing seat through the center through hole of the upper connecting plate and the center through hole of the damping cushion, until the end of the fixing bolt is separated from the reduced diameter structure of the expansion rod and the four expansion claws are expanded, so that the expansion rod is expanded to be tightly arranged in the assembly hole of the closed frame, the elastic suspension fixing structure is assembled on the closed frame, and the fixing work of the elastic suspension fixing structure is completed by connecting the equipment rack through the upper connecting plate; in a non-working state, the fixing bolt is in a free state or does not act on the reduced diameter structure of the expansion rod.

3. The elastic suspension fixing structure for a closed frame of an automobile according to claim 1, characterized in that: The diameters of the center through hole of the upper connecting plate and the center through hole of the damping cushion are greater than the diameter of the head of the fixing bolt.

4. The elastic suspension fixing structure for a closed frame of an automobile according to claim 1, wherein: The damping cushion is in a hollow cylindrical shape, the lower connecting plate is in a circular plate shape, and the diameter of the lower connecting plate is at least equal to the diameter of the damping cushion; the diameter of the nut cover of the fixing seat is greater than the diameter of the center hole of the lower connecting plate, and the center hole of the lower connecting plate is in a transition fit with the expansion rod of the fixing seat.

5. The elastic suspension fixing structure for a closed frame of an automobile according to claim 1, characterized in that: The upper connecting plate has connecting holes on the left and right sides, and the left and right connecting holes are connected with the equipment rack through bolts and nuts.

6. The elastic suspension fixing structure for a closed frame of an automobile according to claim 1, wherein: The upper connecting plate, the damping cushion, the fixing seat, the lower connecting plate and the fixing bolt are made of steel.

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