CN212959654U

CN212959654U - Mounting structure of vehicle damping rubber

Info

Publication number: CN212959654U
Application number: CN202120567521.0U
Authority: CN
Inventors: 马国富; 王鑫; 杨大军; 罗俊富
Original assignee: Ningbo Hangke Rubber Material Co ltd
Current assignee: Ningbo Hangke Rubber Material Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-04-13
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a mounting structure of damping rubber for vehicles, which comprises a horizontal mounting surface, wherein a boss is formed on the mounting surface, a threaded hole is formed on the boss, a fastening bolt is inserted in the threaded hole and comprises a screw rod and a nut, the screw rod is in threaded connection in the threaded hole, the diameter of the nut is larger than the aperture of the threaded hole, the nut is positioned outside the threaded hole, the damping rubber is cylindrical, a through hole is formed in the damping rubber, a circle of barb is formed on the inner wall of the through hole and is hooked on the bottom surface of the nut, a circle of clamping groove is formed on the outer wall of the damping rubber along the circumferential direction, a support rod is clamped in the clamping groove through interference fit, and the support rod is parallel to the mounting surface, the height of the clamping groove is lower than that of the screw cap.

Description

Mounting structure of vehicle damping rubber

Technical Field

The utility model relates to an automobile-used yielding rubber technical field, more specifically the saying so relates to a can carry out the yielding rubber that cushions to the lateral impact that car fastening bolt received.

Background

The damping rubber for the vehicle can wrap a spring, a fastener and the like to isolate air and prevent corrosion, and can play a damping and buffering role in vibration of a component by utilizing elasticity of the rubber and friction between the rubber and the component.

Therefore, the damping rubber for the vehicle in the prior art is generally wrapped, the structure of the damping rubber is shown in figure 1, figure 1 is a drawing (1, a fixing pin; 1.1, a damping rubber pad; 2, a protective sleeve; 2.1, a protective sleeve body; 2.2, corrugations; 2.3, a binding port) of a Chinese utility model (ZL 201220464979.4). A common structure of the damping rubber for the vehicle is disclosed in the patent, the damping rubber comprises the fixing pin 1, the damping rubber pad 1.1 is sleeved on the fixing pin 1, and the damping rubber pad 1.1 is wrapped outside a fastener in an interference fit mode by using a spring of the damping rubber pad 1.1. When the fastener receives the vibration, the fastener can produce axial reciprocating vibration trend, and the damping rubber can utilize the friction between its and the fastener to play damping cushioning effect this moment, be about to the vibration power transform with the frictional force between the damping rubber and absorb the consumption by the damping rubber to eliminate the vibration of fastener itself.

However, if the fastener generates a transverse vibration tendency (radial direction) perpendicular to the axial direction of the fastener, the conventional damping rubber cannot achieve a good buffering effect, and the damping rubber is wrapped on the fastener and does not generate a relative friction force in the radial direction, so that the transverse impact force cannot be buffered.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automobile-used yielding rubber's mounting structure, it improves through self structure and mounting structure to yielding rubber for this automobile-used rubber can effectively carry out the buffering regulation to the lateral shock.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a mounting structure of shock-absorbing rubber for vehicle comprises a horizontal mounting surface, a boss is formed on the mounting surface, a threaded hole is arranged on the boss, a fastening bolt is inserted in the threaded hole and comprises a screw rod and a nut, the screw rod is connected in the threaded hole in a threaded manner, the diameter of the screw cap is larger than the aperture of the threaded hole, the screw cap is positioned outside the threaded hole and also comprises damping rubber which is cylindrical, a through hole is formed in the damping rubber, a circle of barb is formed on the inner wall of the through hole and is hooked on the bottom surface of the screw cap, a circle of clamping grooves are formed on the outer wall of the damping rubber along the circumferential direction, supporting rods are clamped in the clamping grooves in an interference fit manner, the supporting rods are parallel to the mounting surface, and the height of the clamping groove is lower than that of the screw cap;

the bottom of yielding rubber is formed with a plurality of hemisphere archs install and be formed with a plurality of shrinkage pools on the face, the quantity of shrinkage pool with hemisphere protruding quantity is unanimous, and each hemisphere arch all inlays and establishes in the shrinkage pool.

As an improvement of the utility model, a spacing groove has been seted up on the installation face, the width of spacing groove is about to be greater than damping rubber's diameter, damping rubber is located the top of spacing groove.

As an improvement of the utility model, the barb includes transverse connection portion and hooking portion, transverse connection portion connects perpendicularly on the inner wall of through-hole, hooking portion with transverse connection portion integrated into one piece and by transverse connection portion's tip upwards extends perpendicularly, hooking portion with the inner wall of through-hole parallel and with be formed with the clearance between the inner wall of through-hole.

As a further improvement of the utility model, a second hemispherical protrusion is formed at the top of the hooking part.

Compared with the prior art, the scheme has the beneficial effects that: the outer wall of the damping rubber is provided with a clamping groove, a supporting rod is inserted in the clamping groove, one end of the supporting rod is clamped in the clamping groove in an interference fit mode, the other end of the supporting rod does not need external support, the length of the supporting rod is shorter and is slightly larger than the depth of the clamping groove, the whole width of the damping rubber cannot be greatly influenced, when a fastener is impacted by external impact and tends to vibrate transversely, the damping rubber can transmit impact force to the supporting rod, the supporting rod is stressed to have a tendency of falling off towards the outside of the clamping groove, and the friction force between the supporting rod and the inner wall of the clamping groove can absorb and consume the transverse impact, so that the transverse impact on the whole fastener is buffered; in addition, be formed with the hemisphere arch on the bottom of yielding rubber and the inside hooking part, these hemisphere archs can reduce the area of contact between yielding rubber and the fastener/installation face, receive the unchangeable circumstances of impact force under, according to the pressure formula, the pressure that yielding rubber received can show the increase to make yielding rubber more sensitive to the reaction of impact force, can promote its buffering shock attenuation effect.

Drawings

FIG. 1 is a drawing of the specification of Chinese Utility model patent ZL 201220464979.4;

FIG. 2 is a schematic view of an installation structure of the damping rubber for vehicle in the embodiment of the present invention;

fig. 3 is a schematic diagram of the exploded structure of fig. 2.

Detailed Description

The following detailed description of the present invention will be made with reference to fig. 2 and 3 by way of specific embodiments, which are only illustrative and not limiting of the scope of the present invention.

The embodiment discloses a mounting structure of vehicle damping rubber, including horizontal installation face 2, this installation face 2 can be the arbitrary plane of vehicle inside, is formed with boss 3 on installation face 2, and boss 3 is upwards extended by installation face 2 is perpendicular, and this boss 3 is a hollow cylinder, is formed with screw hole 4 in boss 3's inside, and screw hole 4 also can be pinhole, buckle hole, riveting hole etc. and its specific type is decided by selecting different kinds of fasteners for use.

The whole boss 3 setting is link up from top to bottom to screw hole 4, be formed with a plurality of rings of internal threads in screw hole 4, it has fastening bolt 5 to peg graft in screw hole 4, fastening bolt 5 is including screw rod 51 and nut 52, wherein, the diameter of screw rod 51 equals with the internal diameter of screw hole 4, the external screw thread has been seted up on the outer wall of screw rod 51, the external screw thread matches each other with the thread between the aforesaid internal thread, thereby make screw rod 51 can threaded connection in screw hole 4, be provided with nut 52 at screw rod 51's top, nut 52's diameter will be far away from screw rod 51's diameter, whole nut 52 covers the top at screw rod 51, nut 52 is the round platform form, certain rear end has, nut 52's outer wall is.

The shock absorption rubber 6 is sleeved outside the fastening bolt 5, the shock absorption rubber 6 is integrally in a hollow cylindrical shape, a through hole 61 is formed in the shock absorption rubber 6, the through hole 61 penetrates through the whole shock absorption rubber 6 up and down, a circle of barbs 7 are formed on the inner wall of the through hole 61, the barbs 7 comprise transverse connecting portions 71, the transverse connecting portions 71 are perpendicularly connected onto the inner wall of the through hole 61, the whole transverse connecting portions 71 are made to be in a circular ring shape, the barbs 7 further comprise hooking portions 72, one ends of the hooking portions 72 are connected onto the transverse connecting portions 71, and the other ends of the hooking portions 72 extend upwards vertically. The hook portion 72 is disposed in parallel with the inner wall of the through hole 61, and the hook portion 72 abuts against the outer wall of the boss 3 and abuts against the outer wall of the boss 3 by its own elasticity, whereby the inside of the cushion rubber 6 is supported by the boss 3.

A circle of clamping groove 8 is formed in the outer wall of the damping rubber 6 along the circumferential direction, a notch of the clamping groove 8 is formed in the side wall of the damping rubber 6, and the height of the whole clamping groove 8 is lower than that of the nut 52, so that the transverse impact force received by the fastening bolt 5 can be effectively conducted to the position of the clamping groove 8.

The supporting rod 9 is clamped in the clamping groove 8 in an interference fit mode, the rod diameter of the supporting rod 9 is larger than the groove width of the clamping groove 8, and therefore after the supporting rod 9 is inserted into the clamping groove 8, the groove wall of the clamping groove 8 contracts so as to firmly clamp the supporting rod 9 in the clamping groove. After the support rod 9 is inserted into the slot 8, the outer wall of the support rod 9 is tightly attached to the slot 8, and if relative sliding occurs between the two, a large sliding friction force is generated.

In the process of driving of the automobile, the vehicle may drive the fastening bolt 5 to have a tendency of lateral shaking, that is, the vehicle may provide lateral impact force to the fastening bolt 5, the lower end of the fastening bolt 5 is inserted into the threaded hole 4, the upper portion of the fastening bolt is exposed above the hole of the threaded hole 4, when the lateral impact force is applied, the fastening bolt 5 may tilt, that is, the upper end and the lower end of the fastening bolt 5 may perform lever rotation with the joint of the fastening bolt 5 and the hole of the threaded hole 4 as a fulcrum, the nut 52 is tightly attached to the inner wall of the through hole 61, when the nut 52 swings slightly along with the upper end of the fastening bolt 5, the nut 52 may act on the inner wall of the through hole 61, the height of the slot 8 is slightly lower than the height of the nut 52 when the fastening bolt 5 is in a vertical state, the end of the supporting rod 9 is located in the swing track of the nut, thereby applying a pushing force to the support rod 9 to outwardly fall out of the clamping groove 8. That is to say, the fastening bolt 5 can transmit the transverse impact force to the damping rubber 6 wrapped on the fastening bolt 5, the damping rubber 6 can absorb a part of the transverse impact force by utilizing the elastic buffering of the damping rubber 6, but the thickness of the damping rubber 6 is limited, so most of the transverse impact force can be further transmitted to the supporting rod 9, the supporting rod 9 can form the trend of moving transversely outwards, in the process, the supporting rod 9 and the groove wall of the clamping groove 8 are subjected to relative friction, the transverse impact force is consumed by the friction force between the supporting rod 9 and the groove wall of the clamping groove 8, and the buffering effect is achieved.

In addition, the mounting structure of the vehicle damping rubber in the embodiment can buffer transverse impact and improve the buffer effect on axial impact force.

Specifically, a plurality of hemispherical protrusions 10 are formed at the bottom of the damping rubber 6, a limiting groove 21 is formed in the mounting surface 2, the width of the limiting groove 21 is close to but slightly larger than the diameter of the damping rubber 6, the limiting groove 21 can be used for positioning when the damping rubber 6 is mounted, the bottom of the damping rubber 6 is larger than the notch of the limiting groove 21, the limiting groove 21 can prevent the fastening bolt 5 and the damping rubber 6 from falling out of the limiting groove 21 when the impact force exceeds a buffering extreme value, and a limiting protection effect is achieved.

A plurality of concave holes 11 are arranged in the limiting groove 21, the number of the concave holes 11 is the same as that of the hemispherical protrusions 10, after the shock absorption rubber 6 is installed in place, each hemispherical protrusion 10 is embedded in one concave hole 11 which is opposite up and down, the hemispherical protrusions 10 are limited by the concave holes 11, the purpose of arranging the hemispherical protrusions 10 is to reduce the contact area between the shock absorption rubber 6 and the installation surface 2, specifically, the bottom of the existing shock absorption rubber is generally and wholly attached to the installation surface, the sensitivity of the existing shock absorption rubber after being impacted is not very strong, according to a pressure formula P = F/S, under the condition that the impact force F is not changed, the smaller the contact area S is, the larger the pressure P is, so the contact area between the bottom surface of the shock absorption rubber 6 and the installation surface 2 is reduced by arranging the hemispherical protrusions 10, and the sensitivity of the shock absorption rubber 6 to the impact force, in order to ensure a reduced contact area, the diameter of the hemispherical projected section 10 is larger than the diameter of the recessed hole 11 so that the upper portion of the hemispherical projected section 10 is exposed above the recessed hole 11.

In a similar way, the second hemispherical protrusion 12 is formed at the top of the hook portion 72, the top of the second hemispherical protrusion 12 abuts against the bottom surface of the nut 52, and the whole fastening bolt 5 is limited in the damping rubber 6, so that a concave hole does not need to be formed on the bottom surface of the nut 52 to prevent slipping, and the difficulty in processing the concave hole on the bottom surface of the nut 52 is relatively high. When the fastening bolt 5 is subjected to an impact force in the same axial direction as the fastening bolt, the cushion rubber 6 can quickly detect the axial impact force and perform cushioning.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A mounting structure of a vehicle cushion rubber, comprising a horizontal mounting surface, a boss formed on the mounting surface, a threaded hole formed in the boss, a fastening bolt inserted into the threaded hole, the fastening bolt including a screw threaded into the threaded hole and a nut having a diameter larger than a diameter of the threaded hole, the nut being located outside the threaded hole, characterized in that: the damping rubber is cylindrical, a through hole is formed in the damping rubber, a circle of barb is formed on the inner wall of the through hole and is hooked on the bottom surface of the nut, a circle of clamping groove is formed in the outer wall of the damping rubber along the circumferential direction, a supporting rod is clamped in the clamping groove in an interference fit mode, the supporting rod is parallel to the mounting surface, and the height of the clamping groove is lower than that of the nut;

2. The vehicular cushion rubber mounting structure according to claim 1, wherein: a limiting groove is formed in the mounting surface, the width of the limiting groove is slightly larger than the diameter of the damping rubber, and the damping rubber is located above the limiting groove.

3. The vehicular cushion rubber mounting structure according to claim 1, wherein: the barb includes transverse connection portion and hooking portion, transverse connection portion connects perpendicularly on the inner wall of through-hole, hooking portion with transverse connection portion integrated into one piece and by transverse connection portion's tip upwards extends perpendicularly, hooking portion with the inner wall of through-hole parallel and with be formed with the clearance between the inner wall of through-hole.

4. The vehicular cushion rubber mounting structure according to claim 3, wherein: a second hemispherical protrusion is formed at the top of the hooking part.