Shock pad, motor applying shock pad and range hood

Abstract

The utility model discloses a shock pad which is characterized in that the shock pad is provided with a pad part used for shock absorption in the thickness direction of the pad part, a transition wall extends from the edge of one side of the pad part in the thickness direction of the pad part, and a connecting part extends from the free edge of the transition wall in the direction basically parallel to the pad part. Therefore, the shock pad is U-shaped in a side view on the whole; moreover, the connecting part is provided with a connecting hole penetrating through the wall thickness of the connecting part, and the connecting hole is used for being connected with an object to be damped so as to reduce vibration in the direction perpendicular to the thickness. Meanwhile, the utility model discloses a motor and a range hood applying the shock pad, compared with the prior art, the range hood has a weaker vibration degree, the motor contained in the range hood is subjected to the shock absorption effect of the shock pad, and vibration transmission in the axial direction and the radial direction of the motor is restrained. In addition, according to the scheme, the protrusions of the motor end cover penetrate through the connecting holes of the shock pad to fix the shock pad, and the convenience degree of additionally arranging the shock pad is improved.

Description

Technical Field

[0001] The utility model relates to a shock-absorbing pad, and also to a motor and a range hood using the shock-absorbing pad. Background Art

[0002] The motor is the core component of the range hood, and the state of the motor directly determines the performance of the range hood. If the motor vibrates too much, the vibration of the range hood itself will also increase accordingly, and abnormal noise may also occur. Reducing the vibration of the motor when it is working as much as possible is a key issue that needs to be considered when designing a range hood.

[0003] The motor is generally fixedly connected to the motor bracket inside the range hood by four screws. The vibration intensity at the connection is large and the shock absorption requirement is high. Therefore, shock-absorbing pads are usually provided at these four connections. The shock-absorbing pads are placed between the motor end cover and the motor bracket and are fixed by these four screws. You can refer to the shock-absorbing pad structure disclosed in the Chinese utility model "A shock-absorbing pad, motor assembly structure and range hood" with patent number ZL201921010409.6 (authorization announcement number CN210093030 U).

[0004] The existing shock-absorbing pads have a single connection method with the motor, and generally require screws or other fixings to penetrate the shock-absorbing pads to nail them together with the motor. The number of screws that can be used to fix the shock-absorbing pads is limited. When the shock-absorbing effect does not meet expectations, unless additional screw holes are opened on the motor end cover, the user cannot add more shock-absorbing pads to the structure. Moreover, the above-mentioned shock-absorbing pads can only buffer and reduce vibrations along the thickness direction of themselves, and cannot reduce vibrations in the vertical thickness direction. However, when the motor is running, there are both axial vibrations and radial vibrations. The above-mentioned shock-absorbing pads can only reduce the transmission of the axial vibration of the motor. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to propose a shock-absorbing pad which can absorb shock along its own thickness direction and along the direction perpendicular to the thickness and does not require a fixing piece to penetrate and fix.

[0006] The second technical problem to be solved by the utility model is to provide a motor using the above-mentioned shock-absorbing pad.

[0007] The third technical problem to be solved by the utility model is to provide a range hood using the above-mentioned shock-absorbing pad.

[0008] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: a shock-absorbing pad, characterized in that it has a gasket portion for shock absorption along its thickness direction, a transition wall extends from one side edge of the gasket portion along its thickness direction, and a connecting portion extends from the free edge of the transition wall in a direction basically parallel to the gasket portion, so that the shock-absorbing pad is U-shaped in a side view as a whole; and the connecting portion has a connecting hole that penetrates its wall thickness, which is used to connect the object to be shock-absorbed to reduce vibration in a direction perpendicular to the thickness direction.

[0009] When the object to be damped vibrates, the pad body of the shock-absorbing pad of the utility model is squeezed along the thickness direction and deformed, generating an elastic force opposite to the squeezing direction, thereby reducing the vibration transmission of the object along the thickness direction of the shock-absorbing pad; the connecting portion is pulled perpendicular to the thickness direction and deformed, generating an elastic force opposite to the pulling direction, thereby reducing the vibration transmission of the object along the thickness direction perpendicular to the shock-absorbing pad. Therefore, compared with the prior art, the shock-absorbing pad of the utility model can simultaneously reduce the vibration transmission in two directions, has a better shock-absorbing effect, and can be used in motors and range hoods that have higher shock-absorbing requirements. Moreover, the utility model is connected to the object to be damped through the connecting portion, replacing the existing method in which the screw shock-absorbing pad must be fixed with a fixing member that passes through the entire shock-absorbing pad, so that the shock-absorbing pad is less constrained and restricted during installation and use.

[0010] Furthermore, the connection hole of the connection part is a strip hole, and the bump on the surface of the object to be damped is passed through the connection hole, so that the damping pad can be connected to the object to be damped, and the vibration along the length direction of the connection hole can be further reduced. In order to reduce material costs, the connection part is ring-shaped accordingly.

[0011] As an improvement, there are at least two connecting parts and they are spaced apart on the free edge of the transition wall, so that the pulling force on the connecting part can be distributed to at least two connecting parts, preventing a single connecting part from being broken due to excessive force.

[0012] Furthermore, the gasket portion of the shock-absorbing pad is in the shape of a fan ring, the transition wall is located at the outer periphery of the fan ring, and the strip-shaped connecting hole of the connecting portion extends radially, so that the direction of the elastic force generated by the deformation of the connecting portion is concentrated toward the center of the fan ring, so that it can be more fully used to reduce radial vibration transmission, and is more suitable for the shock-absorbing object whose vibration source comes from the center of the arc, such as a motor.

[0013] Furthermore, the gasket portion has a groove in the central portion, the opening of the groove faces the connecting portion, and is used to accommodate the exposed portion of the mounting screw protruding from the surface of the object to be damped. The groove not only plays a role in avoiding the mounting screw, but also can limit the gasket portion through the mounting screw to prevent the gasket portion from being separated from the object to be damped.

[0014] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: the motor with the above-mentioned shock-absorbing pad includes a motor end cover, which is characterized in that the outer peripheral edge of the motor end cover is embedded in the U-shaped opening of the shock-absorbing pad, and the surface of the motor end cover also has a protrusion and is penetrated into the connecting hole of the shock-absorbing pad.

[0015] Compared with the prior art, the motor of the utility model has a weaker vibration degree due to the damping effect of the damping pad, and the vibration along the axial direction and radial direction of the motor is suppressed by the damping pad. In addition, the present solution fixes the damping pad by passing the protrusion of the motor end cover through the connection hole of the damping pad, which improves the convenience of adding the damping pad. It can also cooperate with the screw damping pad commonly used in the prior art, which can effectively reduce the vibration and ensure that the range hood meets the strict requirements for sound and vibration.

[0016] As an improvement, the projection of the shock-absorbing pad along the thickness direction is fan-shaped, and the outer peripheral edge of the motor end cover abuts against the transition wall of the shock-absorbing pad, further weakening the transmission of radial vibration of the motor.

[0017] Furthermore, the protrusion on the surface of the motor end cover has a hook portion that bends and extends toward the rotating shaft of the motor, thereby forming a locking fit with the connecting portion, which can ensure that the connecting ring withstands the vibration of the motor without falling off.

[0018] The technical solution adopted by the utility model to solve the third technical problem mentioned above is: a range hood using the above-mentioned motor, characterized in that it also includes a motor bracket, the gasket part of the shock-absorbing pad is arranged between the motor and the motor bracket, and the distance between the motor end cover and the motor bracket is slightly smaller than the thickness of the gasket part in the natural state.

[0019] Compared with the prior art, the range hood of the utility model also has the same advantages, that is, small vibration and small noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the shock-absorbing pad of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure in which the motor is installed on the motor bracket in the embodiment of the range hood of the utility model;

[0022] Figure 3 for Figure 2 Schematic diagram of the local structure when the shock-absorbing pad and the motor are separated. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figure 1As shown in FIG. 1 , a preferred embodiment of the shock-absorbing pad of the utility model is shown. The shock-absorbing pad 1 is made of rubber as a whole, and has a gasket portion 11 in a fan-shaped ring shape, which is used for shock absorption along its thickness direction. A transition wall 13 extends from the outer periphery of the fan ring of the gasket portion 11 along its thickness direction, and a connecting portion 12 extends from the free edge of the transition wall 13 in a direction substantially parallel to the gasket portion 11, so that the shock-absorbing pad 1 is U-shaped as a whole when viewed from the side.

[0025] The gasket portion 11 has a groove 111 at the center thereof. The opening of the groove 111 faces the connecting portion 12 and is used to accommodate the exposed portion of the mounting screw protruding from the surface of the object to be damped.

[0026] There are two connecting parts 12 extending from the free edge of the transition wall 13, which are arranged at intervals on the free edge of the transition wall 13. In addition, the connecting part 12 has a connecting hole 121 that penetrates through its wall thickness, which is used to connect the object to be damped to reduce the vibration in the direction perpendicular to the thickness. The connecting hole 121 is a strip hole, and the connecting part 12 is annular. The connecting hole 121 extends along the radial direction of the fan ring. The elastic force generated by the deformation of the connecting part 12 is concentrated toward the center of the fan ring, so that the radial vibration transmission can be more significantly reduced.

[0027] Therefore, the shock-absorbing pad 1 is more suitable for the shock-absorbing object whose vibration source comes from the center of the arc, such as Figure 2 and Figure 3 The motor 2 is shown.

[0028] The motor 2 includes a motor end cover 21 fixed by a first screw 22. The upper surface of the motor end cover 21 has a plurality of paired protrusions 23, and each first screw 22 has a pair of protrusions 23 symmetrically distributed on both sides, and each protrusion 23 has a hook portion 231 bent and extended toward the rotating shaft 26 of the motor 2. The outer periphery of the motor end cover 21 is embedded in the U-shaped opening of the shock-absorbing pad 1, the head of the first screw 22 is embedded in the groove 111 of the shock-absorbing pad 1, the protrusions 23 on the surface of the motor end cover 21 are inserted into the connecting holes 121 of the shock-absorbing pad 1, the outer periphery of the motor end cover 21 is against the transition wall 13 of the shock-absorbing pad 1, and the two strip-shaped connecting holes 121 extend toward the central axis of the motor 2.

[0029] The motor 2 sometimes needs to be mounted on an adapted motor bracket, for example, when the motor is used in a range hood, Figure 2 and Figure 3 The schematic diagram of the structure of the motor 2 and the motor bracket 3 when the motor 2 is used in the range hood is shown. The motor 2 and the motor bracket 3 are fixed together by the second screw 25, the gasket portion 11 of the shock-absorbing pad 1 is embedded between the motor 2 and the motor bracket 3, and the distance between the motor end cover 21 and the motor bracket 3 is slightly smaller than the thickness of the gasket portion 11 in the natural state.

[0030] The motor 2 of this embodiment is also provided with a plurality of conventional screw shock-absorbing pads 24 , which are fixed to the motor 2 and the motor bracket 3 via the second screws 25 . The screw shock-absorbing pads 24 and the shock-absorbing pads 1 jointly reduce the transmission of vibration of the motor 2 .

Claims

1. A shock-absorbing pad, characterized in that: The invention has a gasket portion (11) for shock absorption along its thickness direction, a transition wall (13) extending from one side edge of the gasket portion (11) along its thickness direction, and a connecting portion (12) extending from the free edge of the transition wall (13) in a direction substantially parallel to the gasket portion (11), so that the shock absorbing pad is U-shaped in a side view as a whole; and the connecting portion (12) has a connecting hole (121) penetrating through its wall thickness, which is used to connect an object to be shock-absorbed to reduce vibration in a direction perpendicular to the thickness direction.

2. The shock absorbing pad according to claim 1, characterized in that: The connection hole (121) of the connection portion (12) is a strip-shaped hole.

3. The shock absorbing pad according to claim 2, characterized in that The connecting portion (12) is ring-shaped.

4. The shock absorbing pad according to claim 3, characterized in that: There are at least two connecting parts (12) which are arranged at intervals on the free edge of the transition wall (13).

5. The shock absorbing pad according to claim 4, characterized in that: The gasket portion (11) of the shock-absorbing pad (1) is in the shape of a sector ring, the transition wall (13) is located at the outer periphery of the sector ring, and the strip-shaped connecting hole (121) of the connecting portion (12) extends radially.

6. The shock absorbing pad according to any one of claims 1 to 5, characterized in that: The gasket portion (11) is provided with a groove (111) at the center, the opening of the groove (111) faces the connecting portion (12) and is used to accommodate the exposed portion of the mounting screw protruding from the surface of the object to be damped.

7. A motor having a shock-absorbing pad (1) as claimed in any one of claims 1 to 6, comprising a motor end cover (21), characterized in that: The outer periphery of the motor end cover (21) is embedded in the U-shaped opening of the shock absorbing pad (1), and the surface of the motor end cover (21) also has a protrusion (23) which penetrates into the connection hole (121) of the shock absorbing pad (1).

8. The motor according to claim 7, characterized in that The outer peripheral edge of the motor end cover (21) abuts against the transition wall (13) of the shock-absorbing pad (1).

9. The motor according to claim 7 or 8, characterized in that: The protrusion (23) on the surface of the motor end cover (21) has a hook portion (231) that bends and extends toward the rotating shaft of the motor (2).

10. A range hood using the motor as claimed in any one of claims 7 to 9, characterized in that: It also includes a motor bracket (3), wherein the gasket portion (11) of the shock-absorbing pad (1) is arranged between the motor (2) and the motor bracket (3), and the distance between the motor end cover (21) and the motor bracket (3) is slightly smaller than the thickness of the gasket portion (11) in a natural state.

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