Shock pad

Abstract

The utility model belongs to the technical field of damping elements, and relates to a shock pad which comprises a framework assembly and a damping piece, the framework assembly comprises a screw rod part, a screw head part and a limiting piece, and the limiting piece is arranged on the screw rod part in a sleeved mode through a center hole of the limiting piece and connected with the screw head part in an abutting mode. The radial size of the screw head is larger than the radial size of the center hole and smaller than the radial size of the limiting piece, an injection molding hole penetrating in the axial direction is formed in the limiting piece, and at least one part of the injection molding hole exceeds the peripheral face of the screw head. The damping piece is formed outside the framework assembly and wraps the screw head, the limiting piece and one end of the screw rod part of the framework assembly, and the other end of the screw rod part is exposed out of the damping piece and forms a connecting end part. The shock pad provided by the utility model has the advantages of stable structure and good shock absorption effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock-absorbing elements and relates to a shock-absorbing pad. Background Art

[0002] In various mechanical equipment, shock-absorbing pads (also called shock-absorbing feet, screw shock-absorbing pads, shock absorbers, shock-absorbing columns, etc.) are common general accessories. They can be installed on machinery such as injection molding machines, lathes, packaging equipment, food equipment, various air compressors, blowers, household appliances, agricultural equipment, and precision measuring instruments.

[0003] A shock-absorbing pad generally includes a connecting piece with an external thread and a rubber piece. The connecting piece and the rubber piece are fixedly connected together by a fastener, and then installed on the mechanical equipment through the external thread part of the connecting piece to play roles such as shock isolation and shock absorption.

[0004] The disadvantage of this kind of shock-absorbing pad is that when the shaking of the mechanical equipment is very serious, the rubber piece will produce excessive deformation, resulting in the separation of the connecting piece and the rubber piece. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a shock-absorbing pad, which has the advantages of stable structure and good shock-absorbing effect.

[0006] To solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] A shock-absorbing pad includes a skeleton assembly and a shock-absorbing member. The skeleton assembly includes a screw rod part, a screw head, and a limiting piece. The limiting piece is sleeved on the screw rod part through its central hole and is in contact connection with the screw head. The radial dimension of the screw head is larger than the radial dimension of the central hole and smaller than the radial dimension of the limiting piece. The limiting piece is provided with an injection hole axially penetrating through it, and at least a part of the injection hole extends beyond the outer peripheral surface of the screw head. The shock-absorbing member is formed outside the skeleton assembly and wraps the screw head, the limiting piece, and one end of the screw rod part of the skeleton assembly. The other end of the screw rod part exposes outside the shock-absorbing member and forms a connection end.

[0008] In the above shock-absorbing pad, the shock-absorbing member is made of rubber, rubber-plastic, or plastic; the forming method is vulcanization molding or injection molding.

[0009] In the above shock-absorbing pad, a plurality of injection holes are arranged at intervals in the circumferential direction; preferably, the injection holes are evenly distributed; preferably, the number of injection holes is set to 3 - 5.

[0010] In the above-mentioned shock pad, the injection hole is an oval hole, whose outer side wall is parallel to the outer peripheral surface of the limiting piece and located outside the outer peripheral surface of the screw head, and whose inner side wall is parallel to the central hole wall of the limiting piece and located inside the outer peripheral surface of the screw head.

[0011] In the above-mentioned shock pad, a locking nut is screwed on the rod part of the screw. The locking nut is in contact connection with the limiting piece and locks the limiting piece. The shock-absorbing member wraps the locking nut; preferably, the radial dimension of the locking nut is not greater than the radial dimension of the screw head.

[0012] In the above-mentioned shock pad, the locking nut is a hexagonal nut, and the end surface of the shock-absorbing member is flush with the end surface of the locking nut; of course, the hexagonal nut can also be replaced with other multi-prism bodies.

[0013] In the above-mentioned shock pad, the shock-absorbing member is a cylindrical member, and the shock-absorbing member, the rod part of the screw, the screw head, the locking nut and the limiting piece are coaxially arranged.

[0014] In the above-mentioned shock pad, there are two sets of skeleton assemblies. The two sets of skeleton assemblies are arranged up and down and are wrapped by the same shock-absorbing member. The exposed ends of the rod parts of the screws of the two sets of skeleton assemblies are respectively exposed from the upper and lower ends of the shock-absorbing member and form two connection ends; the structures and specifications of the two sets of skeleton assemblies can be the same or different.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a shock pad, which adopts an integral structure formed by injection molding or vulcanization molding. When in use, it does not need to be pre-assembled and is not easy to come off. The present invention uses a skeleton assembly as the skeleton support structure and installation structure of the shock pad, and a limiting piece is additionally provided. After injection molding, the limiting piece forms an axial anti-disengagement structure between the skeleton assembly and the shock-absorbing member, preventing them from disengaging from each other during use. Therefore, the present invention is more convenient to use, has a more stable structure, and better shock-absorbing effect.

[0017] 2. The limiting piece of the present invention is provided with an injection hole. During injection molding or vulcanization molding, a part of the elastic body will be formed in the injection hole, so that the limiting piece and the shock-absorbing member can be blended together to form a closed loop, making them unable to separate. Under the action of external force, the skeleton assembly will not rotate or come off. In addition, by setting the injection hole, the molten material can flow up and down better, quickly form, and leave no gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2It is a schematic structural diagram of Embodiment 2 of the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the skeleton assembly of the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the limit piece of the present utility model;

[0022] Reference numerals: 1, skeleton assembly; 11, screw rod part; 12, screw head; 13, limit piece; 14, central hole; 15, injection hole; 16, lock nut;

[0023] 2, shock absorber. Detailed implementation mode

[0024] The following further describes the present utility model with specific embodiments in conjunction with the accompanying drawings. Refer to Figures 1-4 :

[0025] Embodiment 1

[0026] Shock absorber pad at single connection end

[0027] A shock absorber pad includes a skeleton assembly 1 and a shock absorber 2. The skeleton assembly 1 includes a screw rod part 11, a screw head 12, a limit piece 13 and a lock nut 16. The limit piece 13 is sleeved on the screw rod part 11 through its central hole 14 and is in contact connection with the screw head 12. The radial dimension of the screw head 12 is larger than the radial dimension of the central hole 14 and smaller than the radial dimension of the limit piece 13. The limit piece 13 is provided with an injection hole 15 axially penetrating through it, and at least a part of the injection hole 15 extends beyond the outer peripheral surface of the screw head 12. The shock absorber 2 is formed outside the skeleton assembly 1 and wraps the screw head 12, the limit piece 13 and one end of the screw rod part 11 of the skeleton assembly 1. The other end of the screw rod part 11 extends out of the shock absorber 2 and forms a connection end; the lock nut 16 is screwed on the screw rod part 11, the lock nut 16 is in contact connection with the limit piece 13 and locks the limit piece 13, and the shock absorber 2 wraps the lock nut 16.

[0028] In this embodiment, the shock absorber 2 is an elastomeric plastic, and the forming method is injection molding; of course, other elastomers such as rubber and plastic or rubber can also be used for the shock absorber 2, and the forming method can also be vulcanization molding, etc.

[0029] Refer to the attached Figure 1 and the attached Figure 3, in this embodiment, the processing is carried out in the following manner: First, assemble the skeleton assembly 1. Sleeve the limit piece 13 onto the rod part 11 of the screw from bottom to top until it abuts against the screw head 12. Rotate the locking nut 16 to make it move axially from bottom to top until it abuts against the limit piece 13. After tightening the locking nut 16, the skeleton assembly 1 forms an integral body. Then, place the skeleton assembly 1 into the mold in sequence for injection molding. The molten material is injected into the predetermined position of the skeleton assembly 1 and wraps the skeleton assembly 1. During molding, a part of the material will fill the injection hole 15 and be molded inside the injection hole 15, so that the limit piece 13 and the shock absorber 2 form an integrally embedded structure. The injection hole 15 can also enable the molten material to flow downward quickly to complete the wrapping of the skeleton assembly 1. After cooling and solidifying, demolding is carried out to form the finished product.

[0030] The usage method of this embodiment is: Through the external thread at the connecting end of the rod part 11 of the screw, the shock pad is integrally installed on the device. For example, install the shock absorbers 2 of several shock pads downward on the bottom of the device, and the bottom of the shock absorber 2 is in contact with the working table surface. When the device works, the shock absorption effect is provided by the deformation generated by the shock absorber 2. By changing the shapes and specifications of the skeleton assembly 1 and the shock absorber 2, this embodiment can adapt to the usage requirements of various different devices.

[0031] Compare with the attached Figure 4 , in order to further facilitate injection molding, a plurality of injection holes 15 are arranged at intervals along the circumferential direction; in this embodiment, the injection holes 15 are evenly distributed and set to 3.

[0032] In this embodiment, the injection hole 15 is a kidney-shaped hole. Its outer side wall is parallel to the outer peripheral surface of the limit piece 13 and is located outside the outer peripheral surface of the screw head 12, and its inner side wall is parallel to the wall of the central hole 14 of the limit piece 13 and is located inside the outer peripheral surface of the screw head 12. The injection hole 15 with the above structure can not only ensure the smooth flow of the molten material, but also ensure that the limit piece 13 has sufficient strength.

[0033] The radial dimension of the above locking nut 16 is not greater than the radial dimension of the screw head 12, which can avoid the influence of the locking nut 16 on the flow of the molten material.

[0034] The above locking nut 16 is a hexagonal nut, and the end surface of the shock absorber 2 is flush with the end surface of the locking nut 16; of course, the hexagonal nut can also be replaced with other multi-prismatic bodies. Using the locking nut 16 with a multi-prismatic body structure, when cooperating with the shock absorber 2, a certain circumferential limiting structure can be generated, making the structure of the shock absorber 2 more stable; the end surface of the shock absorber 2 is flush with the end surface of the locking nut 16, which can make the end surface of the locking nut 16 abut against the installation surface of the device after installation, generating a certain supporting effect and making the operation of the device more stable.

[0035] In this embodiment, the shock absorber 2 is a cylindrical part, and the shock absorber 2, the screw rod part 11, the screw head 12, the locking nut 16 and the limiting piece 13 are coaxially arranged.

[0036] Embodiment 2

[0037] Shock pad with double connection ends

[0038] This embodiment adopts the skeleton assembly 1 with the same structure as that in Embodiment 1.

[0039] Control appendix Figure 2 , the difference is that two sets of the skeleton assemblies 1 are provided, the two sets of skeleton assemblies 1 are arranged up and down and wrapped by the same shock absorber 2, and the exposed ends of the screw rod parts 11 of the two sets of skeleton assemblies 1 are respectively exposed from the upper and lower ends of the shock absorber 2 to form two connection ends; the structures and specifications of the two sets of skeleton assemblies 1 can be the same or different.

[0040] During production, the skeleton assemblies 1 are placed in pairs into the mold and then injection-molded. This embodiment is particularly suitable for connecting and damping upper and lower devices, and its two connection ends are respectively connected to the upper device and the lower device to form a damping structure.

[0041] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A shock-absorbing pad, characterized in that, It includes a skeleton component (1) and a shock absorber (2). The skeleton component (1) includes a screw rod part (11), a screw head (12) and a limiting piece (13). The limiting piece (13) is sleeved on the screw rod part (11) through its central hole (14) and is in contact connection with the screw head (12). The radial dimension of the screw head (12) is larger than the radial dimension of the central hole (14) and smaller than the radial dimension of the limiting piece (13). An injection hole (15) penetrating axially is provided on the limiting piece (13), and at least a part of the injection hole (15) extends beyond the outer peripheral surface of the screw head (12). The shock absorber (2) is formed outside the skeleton component (1) and wraps the screw head (12), the limiting piece (13) and one end of the screw rod part (11) of the skeleton component (1). The other end of the screw rod part (11) is exposed outside the shock absorber (2) to form a connection end.

2. The shock pad according to claim 1, characterized in that, The shock absorber (2) is made of rubber, rubber-plastic or plastic; the forming method is vulcanization forming or injection molding.

3. The shock pad according to claim 1, characterized in that, A plurality of injection holes (15) are arranged at intervals in the circumferential direction.

4. The shock pad according to claim 3, characterized in that, The injection hole (15) is a kidney-shaped hole, the outer side wall of which is parallel to the outer peripheral surface of the limiting piece (13) and is located outside the outer peripheral surface of the screw head (12), and the inner side wall of which is parallel to the wall of the central hole (14) of the limiting piece (13) and is located inside the outer peripheral surface of the screw head (12).

5. The shock pad according to claim 3, characterized in that, A locking nut (16) is screwed on the screw rod part (11), and the locking nut (16) is in contact connection with the limiting piece (13) to lock the limiting piece (13), and the shock absorber (2) wraps the locking nut (16).

6. The shock pad according to claim 5, characterized in that, The locking nut (16) is a hexagonal nut, and the end face of the shock absorber (2) is flush with the end face of the locking nut (16).

7. A shock pad according to claim 5, characterized in that, The shock absorber (2) is a cylindrical part, and the shock absorber (2), the screw rod part (11), the screw head (12), the locking nut (16) and the limiting piece (13) are coaxially arranged.

8. A shock pad according to claim 1, characterized in that, There are two groups of skeleton components (1). The two groups of skeleton components (1) are distributed up and down and are wrapped by the same shock absorber (2). The exposed ends of the screw rod parts (11) of the two groups of skeleton components (1) are respectively exposed from the upper and lower ends of the shock absorber (2) to form two connection ends.

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