Axial bearing and fascia gun using same

Abstract

An axial bearing and a fascia gun using the axial bearing comprise a bearing ring located in a mounting cavity and used for being connected with a transmission rod in a sleeved mode, an elastic body assembly providing radial and axial buffering for the bearing ring is arranged between the inner wall of the mounting cavity and the bearing ring, and the upper end face and the lower end face of the bearing ring both partially cover the elastic body assembly. The elastic body assembly comprises a first elastic body and a second elastic body, and the first elastic body and the second elastic body are arranged in a split mode. By arranging the elastic body assembly, the operation noise among the transmission rod, the axial bearing and the shell is further reduced; the upper end face and the lower end face of the bearing ring partially cover the elastomer assembly, the swing upper limit of the transmission rod is effectively improved, and product performance is enhanced. And the first elastic body and the second elastic body are arranged separately, so that the axial bearing can be quickly assembled, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of fascia gun accessories, and is an axial bearing and a fascia gun using the axial bearing. Background Art

[0002] Conventional fascia guns are connected to massage heads through a transmission rod, so that the massage heads can perform linear reciprocating and swinging motions under the action of the driving member at the other end of the transmission rod, and the vibration and swinging frequency of the massage heads can achieve the effects of massaging muscles and relieving muscle spasms. The transmission rod outer sleeve is provided with bearings to provide position limiting and buffering noise reduction functions, thereby reducing the operating noise of the product. For example, a transmission mechanism and a fascia gun using the transmission mechanism disclosed in CN218247772 U realize radial buffering by setting balls, but the assembly of the balls is relatively cumbersome, which increases the production burden; at the same time, the radial buffering clearance of the balls is limited, and when the transmission rod moves radially or swings circumferentially, the transmission rod is still prone to contact and rub against the buffer, which limits the swing amplitude of the massage head and the performance development of the fascia gun product. Utility Model Content

[0003] The utility model aims to solve the existing technical problems and proposes an axial bearing and a fascia gun using the axial bearing.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an axial bearing, comprising a bearing ring located in a mounting cavity for sleeve-connecting a transmission rod, an elastic body component for providing radial and axial buffering for the bearing ring is provided between the inner wall of the mounting cavity and the bearing ring, and the upper end surface and the lower end surface of the bearing ring are partially covered with the elastic body component, so that the transmission rod and the elastic body component do not stick to each other when the transmission rod moves radially;

[0005] The elastic body assembly includes a first elastic body and a second elastic body which are separately arranged, the first elastic body abuts against the upper wall of the installation cavity, the first elastic body is provided with a first installation groove which matches the top of the bearing ring, the bottom of the first installation groove is provided with a first through hole for partially exposing the upper end face of the bearing ring, and a first radial gap is left between the inner wall of the first through hole and the inner ring wall of the bearing ring; the second elastic body abuts against the lower wall of the installation cavity, the second elastic body is provided with a second installation groove which matches the bottom of the bearing ring, the bottom of the second installation groove is provided with a second through hole for partially exposing the lower end face of the bearing ring, and a second radial gap is left between the inner wall of the second through hole and the inner ring wall of the bearing ring;

[0006] The side walls of the first mounting groove and the second mounting groove are both in contact with the outer ring wall of the bearing ring.

[0007] Preferably, the first elastomer and the second elastomer are both annular bodies, and the first elastomer, the second elastomer and the bearing ring are coaxially arranged.

[0008] Preferably, the lower end surface portion of the first elastic body is concave inwardly to form a first installation groove; and the upper end surface portion of the second elastic body is concave inwardly to form a second installation groove.

[0009] Preferably, both the first mounting groove and the second mounting groove are clearance fit or interference fit with the bearing ring.

[0010] Preferably, the inner ring wall of the bearing ring has a plurality of grooves distributed circumferentially.

[0011] Preferably, the bearing ring is made of highly wear-resistant lubricating plastic.

[0012] Preferably, the lower end surface of the first elastic body and the upper end surface of the second elastic body abut against each other.

[0013] Preferably, the outer ring wall of the bearing ring radially protrudes to form an outer convex ring for increasing the axial buffer surface, and a first step matching the outer convex ring is also provided in the first mounting groove, and a second step matching the outer convex ring is also provided in the second mounting groove, and both the first step and the second step are radially and axially attached to the outer convex ring.

[0014] Preferably, the first elastomer and the second elastomer are symmetrically arranged.

[0015] A fascia gun using an axial bearing comprises a shell and a massage head connected to a transmission rod. A positioning groove for placing the axial bearing is reserved in the shell, and the positioning groove is axially opposed to the elastomer component; positioning through holes are provided at both ends of the positioning groove for radial and axial movement of the transmission rod, and the inner cavity of the positioning groove serves as an installation cavity.

[0016] The beneficial effects of the utility model are as follows: by arranging the elastomer component, the operating noise between the transmission rod and the axial bearing and the housing is further reduced; the upper end face and the lower end face of the bearing ring are partially covered with the elastomer component, which effectively increases the upper limit of the swing of the transmission rod and enhances the product performance; by separately arranging the first elastomer and the second elastomer, the axial bearing is facilitated to be quickly assembled, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the axial bearing of the utility model;

[0018] Figure 2 It is a cross-sectional view of the axial bearing of the utility model;

[0019] Figure 3 It is an exploded view of the axial bearing of the utility model;

[0020] Figure 4 The utility model discloses an assembly method of the fascia gun. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Combined with the embodiments and Figure 1-4 , an axial bearing, comprising a bearing ring 2 located in a mounting cavity for sleeve-engaging a transmission rod 3, an elastic component 1 for providing radial and axial buffering for the bearing ring 2 is provided between the inner wall of the mounting cavity and the bearing ring 2, and the upper end face 21 and the lower end face of the bearing ring partially cover the elastic component 1, so that the transmission rod 3 and the elastic component 1 do not touch each other when the transmission rod 3 moves radially;

[0023] The elastomer assembly 1 includes a first elastomer 11 and a second elastomer 12 which are separately arranged. The first elastomer 11 abuts against the upper wall of the installation cavity. The first elastomer 11 is provided with a first installation groove which matches the top of the bearing ring 2. The bottom of the first installation groove is provided with a first through hole 110 for partially exposing the upper end face 21 of the bearing ring. A first radial gap is left between the inner wall of the first through hole 110 and the inner ring wall of the bearing ring 2. The second elastomer 12 abuts against the lower wall of the installation cavity. The second elastomer 12 is provided with a second installation groove 121 which matches the bottom of the bearing ring 2. The bottom of the second installation groove 121 is provided with a second through hole 120 for partially exposing the lower end face of the bearing ring 2. A second radial gap is left between the inner wall of the second through hole 120 and the inner ring wall of the bearing ring 2.

[0024] The side walls of the first installation groove and the second installation groove 121 are both in contact with the outer ring wall of the bearing ring 2 .

[0025] Furthermore, the first elastic body and the second elastic body can be made of elastic materials such as rubber bands and silicone rubber; the first radial gap and the second radial gap can be equal or unequal.

[0026] The first elastic body 11 and the second elastic body 12 are both annular bodies. The first elastic body 11, the second elastic body 12 and the bearing ring 2 are coaxially arranged for easy assembly.

[0027] The lower end surface of the first elastic body 11 is concave to form a first installation groove; the upper end surface of the second elastic body 12 is concave to form a second installation groove 121. Both the first installation groove and the second installation groove 121 are clearance-fitted or interference-fitted with the bearing ring 2.

[0028] The inner ring wall of the bearing ring 2 is circumferentially provided with a plurality of grooves 22 which can be used as oil passages. The grooves play a guiding role and reduce the friction area between the bearing ring and the transmission rod.

[0029] The bearing ring 2 is made of highly wear-resistant and lubricating plastic to achieve product lightweight and improve product durability.

[0030] The lower end surface of the first elastic body 11 and the upper end surface of the second elastic body 12 are against each other, which can improve the sealing performance of the product and avoid the air gap between the bearing ring 2 and the inner wall of the installation cavity to generate running noise.

[0031] The outer ring wall of the bearing ring 2 radially protrudes to form an outer convex ring 20 for increasing the axial buffer surface. A first step matching the outer convex ring 20 is also provided in the first mounting groove. A second step 122 matching the outer convex ring 20 is also provided in the second mounting groove 121. Both the first step and the second step 122 are radially and axially attached to the outer convex ring 20, dispersing the axial impact on the elastomer component located at the edge of the first through hole and the second through hole, thereby reducing the wear of the elastomer component.

[0032] An axial bearing, a first elastic body 11 and a second elastic body 12 are symmetrically arranged, saving the number of molds. The entire axial bearing can be demoulded and formed by an elastic body mold and a bearing ring mold; when assembling, only the first elastic body or the second elastic body needs to be mounted on the top or bottom of the bearing ring, and then the remaining second elastic body or the first elastic body needs to be mounted on the other end of the bearing ring.

[0033] A fascia gun includes a housing and a massage head connected to a transmission rod 3. A positioning groove 4 for placing an axial bearing is reserved in the housing, and the positioning groove 4 is axially opposed to an elastic component 1, so as to facilitate the positioning and installation of the axial bearing. Positioning through holes are provided at both ends of the positioning groove 4 for radial and axial movement of the transmission rod 3, and the inner cavity of the positioning groove 4 is used as an installation cavity. A radial gap is left between the positioning through hole and the transmission rod 3.

[0034] A fascia gun assembly method, the housing can be a split housing divided into two along the axis of the transmission rod, the split housings are respectively provided with partial positioning grooves, the transmission rod and the axial bearing sleeved on the transmission rod are placed together in any split housing, and then the partial positioning grooves of the other split housing are matched and assembled; the axial bearing can also be placed as a whole into the partial positioning groove first, which is convenient for the positioning and installation of the axial bearing, and then the transmission rod is installed from one end of the bearing ring. Or, one end of the positioning groove is radially abutted against the axial bearing through an installation cover, and the lower part of the housing is screwed or screwed with an installation cover, and the axial bearing can be placed as a whole in the positioning groove, and the installation cavity is partially closed by the installation cover, which is suitable for non-axis split housings.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An axial bearing, comprising a bearing ring located in a mounting cavity and used for sleeve-engaging a transmission rod, characterized in that: An elastic component is provided between the inner wall of the mounting cavity and the bearing ring to provide radial and axial buffering for the bearing ring, and the upper end surface and the lower end surface of the bearing ring partially cover the elastic component, so that the transmission rod and the elastic component do not touch each other when the transmission rod moves radially; The elastic body assembly includes a first elastic body and a second elastic body which are separately arranged, the first elastic body abuts against the upper wall of the installation cavity, the first elastic body is provided with a first installation groove which matches the top of the bearing ring, the bottom of the first installation groove is provided with a first through hole for partially exposing the upper end face of the bearing ring, and a first radial gap is left between the inner wall of the first through hole and the inner ring wall of the bearing ring; the second elastic body abuts against the lower wall of the installation cavity, the second elastic body is provided with a second installation groove which matches the bottom of the bearing ring, the bottom of the second installation groove is provided with a second through hole for partially exposing the lower end face of the bearing ring, and a second radial gap is left between the inner wall of the second through hole and the inner ring wall of the bearing ring; The side walls of the first mounting groove and the second mounting groove are both in contact with the outer ring wall of the bearing ring.

2. An axial bearing according to claim 1, characterized in that: The first elastic body and the second elastic body are both annular bodies, and the first elastic body, the second elastic body and the bearing ring are coaxially arranged.

3. An axial bearing according to claim 1 or 2, characterized in that: The lower end surface of the first elastic body is concave to form a first installation groove; the upper end surface of the second elastic body is concave to form a second installation groove.

4. An axial bearing according to claim 1, characterized in that: The first mounting groove and the second mounting groove are both clearance-fitted or interference-fitted with the bearing ring.

5. The axial bearing according to claim 1, characterized in that: The inner ring wall of the bearing ring is provided with a plurality of grooves distributed in the circumferential direction.

6. An axial bearing according to claim 1 or 5, characterized in that: The bearing rings are made of highly wear-resistant lubricated plastic.

7. An axial bearing according to claim 1 or 2, characterized in that: The lower end surface of the first elastic body and the upper end surface of the second elastic body abut against each other.

8. An axial bearing according to claim 1 or 2, characterized in that: The outer ring wall of the bearing ring radially protrudes to form an outer convex ring for increasing the axial buffer surface. A first step matching the outer convex ring is also provided in the first mounting groove, and a second step matching the outer convex ring is also provided in the second mounting groove. Both the first step and the second step are radially and axially attached to the outer convex ring.

9. An axial bearing according to claim 1 or 2, characterized in that: The first elastic body and the second elastic body are symmetrically arranged.

10. A fascia massage gun using the axial bearing according to any one of claims 1 to 9, comprising a housing and a massage head connected to a transmission rod, characterized in that: A positioning groove for placing an axial bearing is reserved in the shell, and the positioning groove is axially opposed to the elastic body component; positioning through holes for radial and axial movement of the transmission rod are opened at both ends of the positioning groove, and the inner cavity of the positioning groove is used as an installation cavity.

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