CN108869537A - A kind of adjustable bearing assembly of eccentricity - Google Patents

Abstract

The invention discloses a bearing assembly with adjustable eccentricity, comprising: the inner hole of the inner ring of the bearing is an eccentric gear hole, and a first eccentricity a is set between the center of the eccentric gear hole and the center of the channel of the inner ring; The eccentric gear rod is provided with an eccentric shaft, and a second eccentricity b is provided between the center of the eccentric gear rod and the center of the eccentric shaft; through the rotational engagement between the eccentric gear hole and the eccentric gear rod, the distance between the inner ring of the bearing and the eccentric shaft is realized. The adjustment of the eccentricity, and the adjustable eccentricity between the inner ring of the bearing and the eccentric shaft is (a‑b)～(a+b). The present invention is simple in structure, easy to use, and low in cost. The eccentric amount of the eccentric bearing can be adjusted freely through the different cooperation of the eccentric gear hole and the eccentric gear rod, so that the massaging weight of the massage hands can be regulated according to people's comfort requirements, and at the same time the maximum Minimize the auxiliary parts of massage equipment and reduce the processing cost of massage equipment.

Description

A bearing assembly with adjustable eccentricity

technical field

The invention relates to a bearing assembly with adjustable eccentricity, belonging to the technical field of bearing design.

Background technique

With the improvement of people's living standards, fitness equipment has gradually entered people's lives, especially massagers. However, the weight of the massage equipment on the human body and the frequency of the massage are completely dependent on the eccentric bearing to drive the massage hand. The eccentric bearing structure used by the current massage equipment is that the inner hole of the inner ring and the outer diameter of the outer ring are not concentric. When rotating, an eccentricity will be generated, and when the bearing and the massaging hand are connected to work, the massaging hand will reciprocate to massage the human body. However, because the eccentricity of the inner hole of the inner ring relative to the outer diameter of the outer ring is constant, the massage range of the massage hand is also fixed. If you want to change the massage range, you need to install other auxiliary parts, which will increase the complexity of the massage equipment. Sex, will also increase the cost of massage equipment.

The object of the present invention is to design a bearing assembly with adjustable eccentricity, which can adjust the massage weight of the massage hand according to the requirements of people's comfort. Quantity adjustment. In this project, the inner hole is designed as an eccentric gear hole, and the eccentric gear rod is designed. When they are combined to work, the eccentricity can be adjusted, and the sliding phenomenon between the shaft and the inner hole can be prevented. The eccentric assembly of this structure minimizes the auxiliary parts of the massage equipment, and reduces the processing cost of the massage equipment in disguise.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a bearing assembly with adjustable eccentricity, which has the characteristics of simple structure, convenient use, and low cost. The weight of the massage is regulated, and at the same time, the auxiliary parts of the massage equipment are minimized, and the processing cost of the massage equipment is reduced.

Technical scheme: in order to achieve the above object, the technical scheme adopted in the present invention is:

A bearing assembly with adjustable eccentricity, comprising a matched bearing outer ring, bearing inner ring and eccentric gear rod;

Wherein, the inner hole of the inner ring of the bearing is an eccentric gear hole, and a first eccentricity a is set between the center of the eccentric gear hole and the center of the channel of the inner ring; an eccentric shaft is set on the eccentric gear rod, and the eccentric gear There is a second eccentricity b between the center of the rod and the center of the eccentric shaft; through the rotational meshing of the eccentric gear hole and the eccentric gear rod (the center of the eccentric gear hole coincides with the center of the eccentric gear rod when mating) to realize the distance between the inner ring of the bearing and the eccentric shaft The adjustment of the eccentricity between the bearing inner ring and the eccentric shaft is adjustable from (a-b) to (a+b).

Further, in order to ensure the stability of the bearing during rotation, the adjustable eccentricity between the inner ring of the bearing and the eccentric shaft is 5 mm to 25 mm. Generally, the adjustable eccentric range can be freely adjusted according to the needs. In special cases, when a=b, the inner ring of the bearing and the eccentric shaft can even form a concentric axis mode.

Further, the center of the channel of the inner ring on the inner ring of the bearing coincides with the center of the channel of the outer ring on the outer ring of the bearing, and steel balls and cages are arranged between the outer ring of the bearing and the inner ring of the bearing.

Further, in order to minimize the sliding phenomenon between the shaft and the inner hole, the eccentric gear rod and the eccentric shaft are integrally formed.

Beneficial effects: the bearing assembly with adjustable eccentricity provided by the present invention has the following advantages compared with the prior art: 1. The eccentricity of the eccentric bearing can be adjusted freely through the different cooperation between the eccentric gear hole and the eccentric gear rod, Thereby can regulate the weight of massage hand massage according to the requirements of people's comfort, greatly improving comfort; 2, simple structure, easy to use, low cost, can reduce the auxiliary parts of massage equipment to the greatest extent, and reduce the cost of massage equipment in disguise. Processing costs.

Description of drawings

Fig. 1 is a structural schematic diagram of a bearing outer ring and a bearing inner ring in an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the inner ring of the bearing in the embodiment of the present invention;

Fig. 3 is the top view of the eccentric gear rod in the embodiment of the present invention;

Fig. 4 is a structural schematic diagram of an eccentric gear rod in an embodiment of the present invention;

The figure includes: 1. bearing outer ring, 2. bearing inner ring, 3. inner ring channel, 4. inner ring channel center, 5. eccentric gear hole, 6. eccentric gear hole center, 7. eccentric gear rod, 8, eccentric shaft, 9, center of circle of eccentric gear rod, 10, center of circle of eccentric shaft, 11, steel ball, 12, cage.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1-2, it is a bearing assembly with adjustable eccentricity, including a matching bearing outer ring 1, bearing inner ring 2 and eccentric gear rod 7;

Wherein, the inner hole of the bearing inner ring 2 is an eccentric gear hole 5, and a first eccentricity a is set between the center 6 of the eccentric gear hole and the center 4 of the channel of the inner ring; as shown in Fig. 3-4, the The eccentric gear rod 7 is provided with an eccentric shaft 8, and a second eccentricity b is arranged between the center of the eccentric gear rod 9 and the center of the eccentric shaft 10; the eccentric gear hole 5 is engaged with the rotation of the eccentric gear rod 7 (the eccentric gear The center of the hole circle coincides with the center of the eccentric gear rod) to realize the adjustment of the eccentricity between the bearing inner ring 2 and the eccentric shaft 8, and the adjustable eccentricity between the bearing inner ring 2 and the eccentric shaft 8 is (a-b)～(a+ b).

In this embodiment, the adjustable eccentricity between the bearing inner ring 2 and the eccentric shaft 8 is 5 mm to 25 mm; The centers of the grooves coincide, and steel balls 11 and cages 12 are arranged between the bearing outer ring 1 and the bearing inner ring 2; the eccentric gear rod 7 and the eccentric shaft 8 are integrally formed.

The specific embodiment of the present invention is as follows:

As shown in Figure 2-3, when in use, the eccentric gear rod 7 needs to be inserted into the eccentric gear hole 5 of the bearing inner ring 2. When point A of the eccentric gear rod coincides with point A' of the eccentric gear hole, the eccentricity of the bearing Maximum; when the A point of the eccentric gear rod cooperates with other gear points of the eccentric bearing hole, different eccentricity will be produced; when the A point of the eccentric gear rod cooperates with the gear point B' of the eccentric gear hole, the bearing eccentricity minimum. Like this, point A of the eccentric gear rod is inserted into different points of the gear hole of the eccentric bearing, and the eccentric bearing will output different eccentricity.

The invention realizes the free adjustment of the eccentricity of the eccentric bearing through the different cooperation of the eccentric gear hole and the eccentric gear rod, so that the massage weight of the massage hand can be adjusted according to the comfort requirements of people, and the comfort is greatly improved; at the same time, the massage equipment is reduced to the greatest extent The auxiliary parts are easy to operate and reduce the processing cost of massage equipment.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (4)

1. A bearing assembly with adjustable eccentricity, characterized in that it includes a matched bearing outer ring (1), bearing inner ring (2) and eccentric gear rod (7); Wherein, the inner hole of the bearing inner ring (2) is an eccentric gear hole (5), and a first eccentricity a is set between the center of the eccentric gear hole (6) and the center of the channel of the inner ring (4); An eccentric shaft (8) is arranged on the eccentric gear rod (7), and a second eccentricity b is arranged between the center of the eccentric gear rod (9) and the center of the eccentric shaft (10); through the eccentric gear hole (5) and the eccentric gear The rotational engagement of the rod (7) realizes the adjustment of the eccentricity between the bearing inner ring (2) and the eccentric shaft (8), and the adjustable eccentricity between the bearing inner ring (2) and the eccentric shaft (8) is a-b～ a+b. 2. The bearing assembly with adjustable eccentricity according to claim 1, characterized in that the adjustable eccentricity between the bearing inner ring (2) and the eccentric shaft (8) is 5 mm to 25 mm. 3. A bearing assembly with adjustable eccentricity according to claim 1, characterized in that, the center of the inner ring groove (4) of the inner ring of the bearing (2) and the outer ring of the outer ring of the bearing (1) The centers of the ring grooves coincide, and steel balls (11) and cages (12) are arranged between the bearing outer ring (1) and the bearing inner ring (2). 4. The bearing assembly with adjustable eccentricity according to claim 1, characterized in that, the eccentric gear rod (7) and the eccentric shaft (8) are integrally formed.