Improved turntable

Abstract

The utility model discloses an improved turntable. The utility model relates to a plastic sliding ball bearing, which comprises a first plastic sliding part, a plastic fixing part and a metal ball, and further comprises a second plastic sliding part and a first metal wear-resistant part, and the first plastic sliding part, the second plastic sliding part and the plastic fixing part are sequentially arranged from top to bottom; cavities for accommodating the metal balls are respectively formed between the first plastic sliding part and the second plastic sliding part and between the second plastic sliding part and the plastic fixing part, the second plastic sliding part is in rolling contact with the metal balls through the first metal wear-resistant part, and the plastic fixing part is in rolling contact with the metal balls through the first metal wear-resistant part. The first metal wear-resistant part is in contact with the metal balls, so that the plastic fixed part and the second plastic sliding part are prevented from being worn by the metal balls, the plastic fixed part and the second plastic sliding part are not easy to damage, and the first plastic sliding part and the second plastic sliding part can respectively rotate relative to the plastic fixed part through the metal balls.

Description

Technical Field

[0001] This utility model relates to the field of rotating dining table equipment technology, specifically to an improved turntable structure for driving the table to rotate. Background Technology

[0002] Chinese patent CN212546131U discloses a self-rotating desktop turntable base, including a ring-shaped seat with a rotatably mounted ring-shaped cover. The ring-shaped seat has a ring-shaped placement groove, within which ball bearings (steel balls) are placed. If the ring-shaped seat and cover are made of metal, the manufacturing process is difficult, resulting in high overall cost and weight. If the ring-shaped seat and cover are made of plastic, although the manufacturing difficulty and production cost are reduced, during use, the weight of the glass turntable and the dishes placed on it is applied to the ball bearings through the ring-shaped cover. The ball bearings will press indentations into the ring-shaped placement groove. When the depth of the indentation exceeds the vertical gap between the ring-shaped seat and cover, the ring-shaped cover can no longer rotate relative to the ring-shaped seat via the ball bearings.

[0003] Furthermore, because the electric motor continuously drives the gear ring to rotate, which in turn drives the ring cover to rotate and causes the plate on it to rotate, although there is a start / stop switch to control the electric motor, there is usually only one start / stop switch. In actual use, the ring cover usually keeps rotating, making it inconvenient for any user to stop the ring cover, which is very inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide an improved turntable with a longer service life.

[0005] The purpose of this utility model is achieved as follows.

[0006] An improved turntable includes a first plastic slider, a plastic fixing member, and a metal ball, and also includes a second plastic slider and a first metal wear-resistant member. The first plastic slider, the second plastic slider, and the plastic fixing member are arranged sequentially from top to bottom. Cavities for accommodating the metal ball are formed between the first plastic slider and the second plastic slider, and between the second plastic slider and the plastic fixing member. The second plastic slider and the metal ball make rolling contact through the first metal wear-resistant member, and the plastic fixing member also makes rolling contact through the first metal wear-resistant member and the metal ball.

[0007] In this invention, the plastic fixing component and the second plastic sliding component are in contact with the first metal wear-resistant component and the metal ball bearing, which prevents the plastic fixing component and the second plastic sliding component from being worn by the metal ball bearing. The plastic fixing component and the second plastic sliding component are not easily damaged, and can ensure that the first plastic sliding component and the second plastic sliding component rotate relative to the plastic fixing component through the metal ball bearing respectively.

[0008] The above technical solution can be further improved as follows.

[0009] Furthermore, the first plastic slider, the second plastic slider, and the plastic fixing part are all annular, the cavity is annular, and the first metal wear-resistant part is an annular metal sheet.

[0010] The first type of metal wear-resistant component has a simple structure and is easy to manufacture. It can upgrade existing turntables without modifying existing turntable molds, reducing overall manufacturing costs and making it more competitive in the market.

[0011] Furthermore, the first plastic slider has a first upper groove at its bottom, the second plastic slider has a first lower groove at its top, the second plastic slider has a second upper groove at its bottom, and the plastic fixing part has a second lower groove at its top. The first upper groove and the first lower groove, the second upper groove and the second lower groove are aligned to form the cavity, and the first metal wear-resistant part is provided in the first lower groove and the second lower groove, respectively. The top surface of the corresponding first metal wear-resistant part is lower than the top surface of the first lower groove or the second lower groove.

[0012] The first metal wear-resistant part does not interfere with the first and second lower grooves' positioning of the metal balls.

[0013] Furthermore, the bottom surface of the first lower groove and / or the second lower groove is provided with a first arc-shaped groove, the first metal wear-resistant part is placed on the bottom surface of the corresponding first lower groove and / or the second lower groove and covers the first arc-shaped groove, and the first metal wear-resistant part deforms to fit the first arc-shaped groove during the rolling of the metal ball.

[0014] After the first metal wear-resistant part deforms and fits into the first arc-shaped groove, the first metal wear-resistant part guides the rolling direction of the metal ball, making it less likely for the metal ball to wobble left or right.

[0015] Furthermore, the cross-section of the bottom surface of the first lower groove and / or the second lower groove is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part is concave arc-shaped, with the first metal wear-resistant part placed on the bottom surface of the corresponding first lower groove and / or the second lower groove.

[0016] The first wear-resistant metal component guides the rolling direction of the metal balls, making it less likely for the metal balls to wobble left or right.

[0017] Furthermore, it also includes a second wear-resistant metal component, wherein the first plastic slider and the metal ball roll contact through the second wear-resistant metal component, and the second plastic slider and the metal ball roll contact through the second wear-resistant metal component.

[0018] The first and second plastic sliders come into contact with the metal ball bearings through the second metal wear-resistant part, which prevents the first and second plastic sliders from being worn by the metal ball bearings. The first and second plastic sliders are not easily damaged, which helps to extend the product's service life.

[0019] Furthermore, the first plastic slider has a first upper groove at its bottom, the second plastic slider has a first lower groove at its top, the second plastic slider has a second upper groove at its bottom, and the plastic fixing part has a second lower groove at its top. The first upper groove and the first lower groove, the second upper groove and the second lower groove are aligned to form the cavity. The first upper groove and the second upper groove are respectively provided with the second wear-resistant metal part, and the bottom surface of the corresponding second metal wear-resistant part is higher than the bottom surface of the first upper groove or the second upper groove.

[0020] Furthermore, the bottom surface of the first upper groove and / or the second upper groove is provided with a second arc-shaped groove, and the second metal wear-resistant part is placed on the bottom surface of the corresponding first upper groove and / or the second upper groove and covers the second arc-shaped groove. The second metal wear-resistant part deforms during the rolling of the metal ball to fit the second arc-shaped groove.

[0021] After the second metal wear-resistant part deforms and fits into the second arc-shaped groove, the second metal wear-resistant part guides the rolling direction of the metal ball, making it less likely for the metal ball to wobble left or right.

[0022] Furthermore, the cross-section of the bottom surface of the first upper groove and / or the second upper groove is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part is concave arc-shaped, with the first metal wear-resistant part placed on the bottom surface of the corresponding first lower groove and / or the second lower groove.

[0023] The second wear-resistant metal component guides the rolling direction of the metal balls, preventing them from easily swaying left or right.

[0024] Furthermore, the bottom of the first plastic slider is provided with a mounting groove. The bottom surface of the first plastic slider is provided with a detachable first limiting member and a second limiting member on both sides of the mounting groove. The bottom surface of the first limiting member is lower than the bottom surface of the second limiting member. The first limiting member and the second limiting member extend into the mounting groove respectively. After the first limiting member and the second limiting member are connected to the first plastic slider, the cross section of the mounting groove is inverted T-shaped. The cross sections of the second plastic slider and the plastic fixing member are both T-shaped. The second limiting member restricts the second plastic slider from being placed in the mounting groove. The first limiting member restricts the plastic fixing member from being placed in the mounting groove. Anti-friction gaps are left between the top and bottom of the first plastic slider and the second plastic slider, and between the second plastic slider and the plastic fixing member. The anti-friction gaps are smaller than the diameter of the metal ball. The outer periphery of the second plastic slider is provided with driven teeth that are connected to the drive device for transmission.

[0025] The first plastic sliding component, the second plastic sliding component, and the plastic fixing component have a simple installation structure that is easy to assemble and disassemble. The limit component is designed to be detachable, which facilitates the mold opening and manufacturing of the first plastic sliding component.

[0026] This invention protects the first plastic sliding component, the second plastic sliding component, and the plastic fixing component from wear and malfunction by using a first metal wear-resistant component and a second metal wear-resistant component, thus helping to extend the product's service life. It does not significantly increase the overall manufacturing cost or weight. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the exploded structure of Example 1.

[0028] Figure 2 This is a cross-sectional structural diagram of Example 1.

[0029] Figure 3 for Figure 2 Enlarged schematic diagram of section A in the middle.

[0030] Figure 4 This is a schematic diagram of the exploded structure of Example 2.

[0031] Figure 5 This is a cross-sectional structural diagram of Example 2.

[0032] Figure 6 for Figure 5 Enlarged schematic diagram of section B in the middle. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Example 1, see Figure 1-3 As shown, an improved turntable includes a first plastic slider 1, a second plastic slider 2, a plastic fixing member 3, and metal balls 4. The first plastic slider 1, the second plastic slider 2, and the plastic fixing member 3 are arranged sequentially from top to bottom, that is, the second plastic slider 2 sits on the plastic fixing member 3, and the first plastic slider 1 sits on the second plastic slider 2. Cavities for accommodating the metal balls 4 are formed between the first plastic slider 1 and the second plastic slider 2, and between the second plastic slider 2 and the plastic fixing member 3, respectively. The metal balls 4 are placed in the corresponding cavities, and a push rod 41 is provided between adjacent metal balls 4.

[0035] Specifically, the first plastic slider 1, the second plastic slider 2, and the plastic fixing member 3 are all annular, and the cavity is annular. The bottom of the first plastic slider 1 is provided with a mounting groove 11. The bottom surface of the first plastic slider 1 is provided with a detachable first limiting member 5 outside the mounting groove 11, and the bottom surface of the first plastic slider 1 is provided with a detachable second limiting member 6 inside the mounting groove 11. The bottom surface of the first limiting member 5 is lower than the bottom surface of the second limiting member 6. The first limiting member 5 and the second limiting member 6 extend into the mounting groove 11 respectively. After the first limiting member 5, the second limiting member 6, and the first plastic slider 1 are connected, the cross-section of the mounting groove 11 is inverted T-shaped. Both the second plastic slider 2 and the plastic fixing member 3 have T-shaped cross-sections. The second limiting member 6 restricts the second plastic slider 2 to be placed in the mounting groove 11, and the first limiting member 5 restricts the plastic fixing member 3 to be placed in the mounting groove 11. Anti-friction gaps 7 are provided between the top and bottom of the first plastic slider 1 and the second plastic slider 2, and between the second plastic slider 2 and the plastic fixing member 3, respectively. The anti-friction gaps 7 are smaller than the diameter of the metal ball 4. Preferably, the first plastic slider 1 is detachably connected to the first limiting member 5 and the second limiting member 6 by screws (not shown in the figure).

[0036] The first plastic slider 1 has a first upper groove 12 on the bottom surface of its mounting groove 11, the second plastic slider 2 has a first lower groove 21 on its top surface, a second upper groove 22 on its bottom surface, and a second lower groove 31 on its top surface. The first upper groove 12, the first lower groove 21, the second upper groove 22, and the second lower groove 31 are aligned to form the cavity. A friction-resistant gap 7 is provided between the first upper groove 12, the first lower groove 21, the second upper groove 22, and the second lower groove 31. The cavity is equipped with the first metal wear-resistant component 8, i.e., the bottom surface of the first lower groove 21 and the second lower groove 31 is provided with the first metal wear-resistant component 8, and the top surface of the corresponding first metal wear-resistant component 8 is lower than the top surface of the first lower groove 21 or the second lower groove 31. The bottom of the metal ball 4 is in rolling contact with the first metal wear-resistant component 8, i.e., the second plastic slider 2 and the metal ball 4 are in rolling contact through the first metal wear-resistant component 8, and the plastic fixing component 3 is in rolling contact through the first metal wear-resistant component 8 and the metal ball 4.

[0037] The first metal wear-resistant component 8 is a ring-shaped metal sheet. Preferably, the first metal wear-resistant component 8 is an iron sheet.

[0038] The bottom surfaces of the first lower groove 21 and the second lower groove 31 are flat. Preferably, the bottom surfaces of the first lower groove 21 and the second lower groove 31 are respectively provided with a first arc-shaped groove 81. The first metal wear-resistant part 8 is placed on the corresponding bottom surfaces of the first lower groove 21 and the second lower groove 31 and covers the first arc-shaped groove 81. The first metal wear-resistant part 8 deforms during the rolling of the metal ball 4 to fit the first arc-shaped groove 81. Alternatively, the cross-section of the bottom surface of the first lower groove 21 and / or the second lower groove 31 is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part 8 is concave arc-shaped. The first metal wear-resistant part 8 is placed on the corresponding bottom surface of the first lower groove 21 and / or the second lower groove 31. The metal ball 4 is guided to roll by the first arc-shaped groove 81. The two sides of the metal ball 4 will not contact the side walls of the first lower groove 21 and the second lower groove 31, reducing friction and making the turntable rotate more smoothly.

[0039] The turntable of this utility model also includes a driving device. The outer periphery of the second plastic slider 2 is provided with driven teeth that are connected to the driving device for transmission. The driving device is a motor 10, and the output shaft of the motor 10 is provided with driving teeth. The driving teeth and driven teeth mesh and transmit power. The motor 10 drives the second plastic slider 2 to rotate continuously at a preset speed. Under the gravity of the tableware, glass plate and the first plastic slider 1, the second plastic slider 2 will also drive the first plastic slider 1 to rotate. However, after the user actively stops the first plastic slider 1, the motor 10 can still drive the second plastic slider 2 to continue rotating. After the user releases the motor, the second plastic slider 2 will drive the first plastic slider 1 to rotate again.

[0040] Example 2, see Figure 4-6 As shown, the difference from Embodiment 1 is that it also includes a second wear-resistant metal part 9. The second wear-resistant metal part 9 is disposed at the top of the cavity, that is, the first upper groove 12 and the second upper groove 22 are respectively provided with the second wear-resistant metal part 9, and the bottom surface of the corresponding second metal wear-resistant part is higher than the bottom surface of the first upper groove 12 or the second upper groove 22. The first plastic sliding part 1 and the metal ball 4 roll in contact through the second wear-resistant metal part 9, and the second plastic sliding part 2 and the metal ball 4 roll in contact through the second wear-resistant metal part 9. The second wear-resistant metal part 9 is a ring-shaped metal sheet. Preferably, the second wear-resistant metal part 9 is an iron sheet.

[0041] The bottom surfaces of the first upper groove 12 and the second upper groove 22 are flat. Preferably, the bottom surfaces of the first upper groove 12 and the second upper groove 22 are provided with a second arc-shaped groove 91. The second metal wear-resistant part is placed on the corresponding bottom surfaces of the first upper groove 12 and the second upper groove 22 and covers the second arc-shaped groove 91. The second metal wear-resistant part deforms during the rolling of the metal ball 4 to fit the second arc-shaped groove 91. The second arc-shaped groove 91 and the first arc-shaped groove 81 jointly guide the rolling of the metal ball 4. The two sides of the metal ball 4 will not contact the side walls of the first lower groove 21 and the second lower groove 31, reducing friction and making the turntable rotate more smoothly. Alternatively, the cross-section of the bottom surface of the first upper groove 12 and / or the second upper groove 22 is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part 8 is concave arc-shaped. The first metal wear-resistant part 8 is placed on the corresponding bottom surface of the first lower groove 21 and / or the second lower groove 31.

[0042] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0043] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0044] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0045] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. An improved turntable, comprising a first plastic slider, a plastic retainer, and metal balls, characterized in that, It also includes a second plastic slider and a first metal wear-resistant component. The first plastic slider, the second plastic slider, and the plastic fixing component are arranged sequentially from top to bottom. Cavities for accommodating metal balls are formed between the first plastic slider and the second plastic slider, and between the second plastic slider and the plastic fixing component. The second plastic slider and the metal balls make rolling contact through the first metal wear-resistant component, and the plastic fixing component also makes rolling contact through the first metal wear-resistant component and the metal balls.

2. The improved turntable according to claim 1, characterized in that, The first plastic sliding component, the second plastic sliding component, and the plastic fixing component are all annular in shape, the cavity is annular in shape, and the first metal wear-resistant component is an annular metal sheet.

3. The improved turntable according to claim 1, characterized in that, The first plastic slider has a first upper groove at its bottom, the second plastic slider has a first lower groove at its top, the second plastic slider has a second upper groove at its bottom, and the plastic fixing part has a second lower groove at its top. The first upper groove and the first lower groove, the second upper groove and the second lower groove are aligned to form the cavity. The first metal wear-resistant part is provided in the first lower groove and the second lower groove respectively. The top surface of the corresponding first metal wear-resistant part is lower than the top surface of the first lower groove or the second lower groove.

4. The improved turntable according to claim 3, characterized in that, The bottom surface of the first lower groove and / or the second lower groove is provided with a first arc-shaped groove. The first metal wear-resistant part is placed on the bottom surface of the corresponding first lower groove and / or the second lower groove and covers the first arc-shaped groove. The first metal wear-resistant part deforms during the rolling of the metal ball to fit the first arc-shaped groove.

5. The improved turntable according to claim 3, characterized in that, The cross-section of the bottom surface of the first lower groove and / or the second lower groove is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part is concave arc-shaped. The first metal wear-resistant part is placed on the bottom surface of the corresponding first lower groove and / or the second lower groove.

6. The improved turntable according to claim 1, characterized in that, It also includes a second wear-resistant metal component, and the first plastic slider makes rolling contact with the metal ball through the second wear-resistant metal component, and the second plastic slider makes rolling contact with the metal ball through the second wear-resistant metal component.

7. The improved turntable according to claim 6, characterized in that, The first plastic slider has a first upper groove at its bottom, the second plastic slider has a first lower groove at its top, the second plastic slider has a second upper groove at its bottom, and the plastic fixing part has a second lower groove at its top. The first upper groove and the first lower groove, the second upper groove and the second lower groove are aligned to form the cavity. The first upper groove and the second upper groove are respectively provided with the second wear-resistant metal part, and the bottom surface of the corresponding second metal wear-resistant part is higher than the bottom surface of the first upper groove or the second upper groove.

8. The improved turntable according to claim 7, characterized in that, The bottom surface of the first upper groove and / or the second upper groove is provided with a second arc-shaped groove. The second metal wear-resistant part is placed on the bottom surface of the corresponding first upper groove and / or the second upper groove and covers the second arc-shaped groove. The second metal wear-resistant part deforms during the rolling of the metal ball to fit the second arc-shaped groove.

9. The improved turntable according to claim 7, characterized in that, The cross-section of the bottom surface of the first upper groove and / or the second upper groove is concave arc-shaped, and the corresponding cross-section of the first metal wear-resistant part is concave arc-shaped. The first metal wear-resistant part is placed on the bottom surface of the corresponding first lower groove and / or the second lower groove.

10. The improved turntable according to claim 2, characterized in that, The bottom of the first plastic slider is provided with a mounting groove. The bottom surface of the first plastic slider is provided with a detachable first limiting member and a second limiting member on both sides of the mounting groove. The bottom surface of the first limiting member is lower than the bottom surface of the second limiting member. The first limiting member and the second limiting member extend into the mounting groove. After the first limiting member and the second limiting member are connected to the first plastic slider, the cross section of the mounting groove is inverted T-shaped. The cross sections of the second plastic slider and the plastic fixing member are both T-shaped. The second limiting member restricts the second plastic slider from being placed in the mounting groove. The first limiting member restricts the plastic fixing member from being placed in the mounting groove. Anti-friction gaps are left between the top and bottom of the first plastic slider and the second plastic slider, and between the second plastic slider and the plastic fixing member. The anti-friction gaps are smaller than the diameter of the metal ball. The outer periphery of the second plastic slider is provided with driven teeth that are connected to the drive device.

Images