WO2024045348A1

WO2024045348A1 - Billiard table and stone slab connector thereof

Info

Publication number: WO2024045348A1
Application number: PCT/CN2022/131899
Authority: WO
Inventors: 乔元栩
Original assignee: 乔元栩
Priority date: 2022-09-02
Filing date: 2022-11-15
Publication date: 2024-03-07
Also published as: CN115624737A

Abstract

A billiard table and a stone slab connector thereof. The stone slab connector comprises an oblong nut (9) and a positioning sleeve (8), wherein the oblong nut (9) has an oblong structure, and is provided with a through threaded hole (11); the positioning sleeve (8) is provided with an arc-shaped groove for accommodating the oblong nut (9), and barbs (13) extending in a circumferential direction of the positioning sleeve (8) are arranged on an outer side face of the positioning sleeve (8); and the oblong nut (9) is integrally fitted and embedded into the arc-shaped groove, and forms an oblong column structure with the positioning sleeve (8). The stone slab connector can rapidly carry out precise positioning and mounting, thereby greatly improving the working efficiency and positioning precision, eliminating the phenomena of existing round nuts (3) rotating to burst the top of a stone slab (1) and the stone slab (1) being easily crushed, and greatly improving the tightening force and the performance of a billiard table.

Description

A kind of billiard table and its slate connecting piece

Technical field

The invention relates to the technical field of billiards, and in particular to a billiard table and a stone slab connector thereof.

Background technique

The earliest billiard table installation table edge (also called library edge) was to first place the table edge on the side of the stone slab, then use the body to close it, and then put the round nut in the nut hole of the stone slab with the left hand and the right hand with the feel. Pass the bolt through the edge of the table and tighten it to connect it. Since it is blind screwing, it is more time-consuming and laborious. After you finish tightening the first bolt, you can squat down and tighten the other four bolts without leaning on the side or worrying about the edge falling off. However, since the nut hole of the stone slab is a blind hole that opens downward, it is basically blind screwed. And since the gap between the round nut and the nut hole is very small, use the fingertips of your left hand to hold the bottom end of the round nut and rotate it with the bolt of your right hand. With screwing in, the installation is very laborious and tests one's patience.

Due to the above installation method, the amount of on-site installation is increased. Therefore, in recent years, the nut factory pre-assembly method has been adopted. As shown in the structure of Figure 1, Figure 2, Figure 3 and Figure 4, the round nut 3 in the stone slab 1 is installed and fixed in the nut hole 6 of the stone slab 1 according to the following steps:

1. Turn the front side of the stone plate 1 down and the back side up to expose the nut hole 6;

2. Put the thread center line of the round nut 3 into the nut hole 6 of the stone plate 1 in a direction perpendicular to the edge of the stone plate 1;

3. Pass the bolt 2 through the pre-assembled steel template hole to ensure installation centering, and connect it to the round nut 3 in the stone slab 1;

4. Tighten all bolts 2 and round nuts 3 on stone plate 1 in sequence;

5. Use the prepared marble glue 5 to fill the gap in the nut hole 6, and use a thin iron wire to vibrate it up, down, left and right to fill the gap with the marble glue 5;

6. After the marble glue 5 has solidified, loosen all the bolts 2, remove the steel formwork 4, and complete the installation.

Disadvantages of this installation method:

1. Pre-installed steel formwork 4 is required for positioning.

If the center line of the round nut 3 in the stone slab 1 does not coincide with the center line of the nut hole 6, the resulting error will reduce the position accuracy of the round nut 3, making it difficult for the bolt to be screwed in, and increasing the installation time of the table edge 7 difficulty. If the error is large, it is easy to make the table edge 7 unable to be pressed, and the wooden holes of the handrail need to be reamed on site. It is very laborious to expand the hole with the secondary cutting edge of the drill, but it is easy to expand the hole with a milling cutter and cause waste holes. Therefore, the pre-assembled steel formwork is used to temporarily replace the function of the library edge, so that the round nut 3, the nut hole 6 and the pre-assembled steel formwork hole are concentric.

2. Installation is labor-intensive and time-consuming.

Since the marble glue 5 is two-component and relatively viscous, it needs to be mixed with a curing agent when used. If there is too much curing agent, it will cure quickly and have poor fluidity, so that the marble glue 5 cannot fully fill the round nut 3 and the The gap between the stone slab 1 and the workload of vibrating up and down with the iron wire will be increased; if the amount of curing agent added is small, the curing time will be long.

3. The round nut 3 rotates and breaks the stone slab 1.

Due to the poor sense of responsibility of the workers, insufficient vibration, or too much curing agent and poor fluidity, the marble glue 5 did not completely fill the gaps, and sometimes bulging occurred. In this way, when the tightening force is slightly larger, the friction force causes the round nut 3 to rotate to the right, causing the left side of the round nut 3 to rise, and the surface of the stone slab 1 is broken.

4. The contact area is small and the stone slab 1 is easily crushed.

In this kind of installation structure, only the upper edge and the smaller lower edge of the nut hole 6 of the round nut 3 are in contact with the stone plate 1, and the contact force is limited. Because I dare not tighten the screws vigorously, the table side 7 cannot be tightened tightly. When the billiard ball is hit hard, it will produce a feeling of vibration, looseness or leakage, and increase the noise. Over time, it will become loose. Reduced pool table performance.

5. When pouring the marble glue 5, the marble glue 5 easily flows in from the pores of the stone slab and fills the threaded surface of the bolt 2 and the hole of the stone slab. After hardening, when the bolt 2 is screwed out, a section of the internal thread of the marble glue is formed. But when installing the table side 7, when the new bolt 2 passes through this section of marble glue internal thread, the marble glue is stuck on the surface of the external thread of bolt 2, and is screwed forward into the nut 3, so that the internal thread of the nut also sticks to the marble glue. The viscosity of stone glue and marble glue increases the friction of thread rotation, making bolt 2 and nut 3 easy to wear.

Contents of the invention

In view of this, the present invention provides a billiard table and its slate connector. The oblong nut of the slate connector is embedded in the positioning sleeve to form an oblong cylindrical structure, and barbs are provided on the outer side of the positioning sleeve. The bottom is equipped with a taper, which can quickly and accurately position and install, greatly improving work efficiency and positioning accuracy. It eliminates the phenomenon that the existing round nut rotation causes the stone slab table to be broken and the stone slab to be easily crushed, and greatly improves the tightening force and improves the efficiency of the installation. Pool table performance.

The present invention adopts the following specific technical solutions:

The invention provides a slate connector for a billiard table. The slate connector includes an oblong nut and a positioning sleeve, wherein:

The oblong nut has an oblong structure and is provided with a through-threaded hole;

The positioning sleeve is provided with an arc-shaped groove for accommodating the oblong nut, and is provided with barbs extending along its circumferential direction on the outer side;

The oblong nut is embedded in the arcuate groove in a form-fitting manner, and forms an oblong cylindrical structure with the positioning sleeve.

Furthermore, the positioning sleeve is also provided with a through hole extending along the axial direction of the threaded hole, and the diameter of the through hole is larger than the major diameter of the threaded hole.

Furthermore, the positioning sleeve is provided with a top plate, a bottom plate, and an intermediate connection portion fixedly connected between the top plate and the bottom plate;

The oblong nut is installed between the top plate and the bottom plate, and fits with the intermediate connection portion to form a long cylindrical structure;

The top plate and the bottom plate are both oblong plates; the oblong outer dimension of the top plate is slightly larger than the oblong nut hole of the stone plate; the bottom of the oblong outer dimension of the bottom plate is slightly smaller than the oblong nut hole of the stone plate. The nut hole is tapered;

The through holes and the barbs are both provided in the middle connecting portion.

Furthermore, the cross-sectional shape of the middle connecting portion is C-shaped and forms the arc-shaped groove;

The intermediate connecting portion and the oblong nut are arranged and fitted along the axial direction of the threaded hole.

Furthermore, the thickness of the top plate is smaller than the thickness of the bottom plate.

Furthermore, the center of the threaded hole coincides with the height direction center of the oblong nut and the width direction center of the oblong nut;

Both ends of the threaded hole are provided with chamfers.

Furthermore, the positioning sleeve is provided with a plurality of barbs parallel along its height direction.

Furthermore, the positioning sleeve is made of precision injection molding of plastic material;

The oblong nut is made of metal material, the outer surface is rust-proofed, and the thread is carburized and quenched.

Furthermore, when the thickness of the bottom plate is constant, the coaxiality of the oblong nut and the stone plate screw hole after assembly is guaranteed by the processing depth of the stone plate oblong hole.

In addition, the present invention also provides a billiard table, which includes a stone slab, a table edge, bolts, and any of the stone slab connectors provided by the above technical solution;

The bottom surface of the stone slab is provided with a plurality of oblong nut holes, and the side surfaces of the stone slab are provided with bolt perforations that communicate with the positions of the oblong nut holes in one-to-one correspondence;

The edge of the table is provided with via holes corresponding to the hole locations of the bolts;

The stone plate connector is embedded in the oblong nut hole with an interference fit, the oblong nut of the stone plate connector is located on the side of the bolt hole, and the threaded hole of the oblong nut is in contact with the bolt hole. The bolt holes are relatively connected;

The screw rod of the bolt passes through the through hole, the table cloth and the bolt hole in sequence and then is threadedly connected to the threaded hole for fixing the table edge to the stone slab.

Furthermore, the stone plate is provided with a blind hole for accommodating the end of the screw rod on the side of the oblong nut hole away from the bolt hole, and the blind hole is coaxially arranged with the bolt hole.

Beneficial effects:

1. When the slate connector of the present invention is used to connect the slate and table edge of a billiard table, since it adopts a self-positioning oblong cylindrical structure, the process of pre-assembly positioning with a steel template and pouring marble glue is eliminated. It saves a lot of pre-installation time and workload. According to calculations, it can save more than ten times the working time and labor. It takes 15 to 20 minutes for a worker to pour a set of 30 nuts into a set of stone slabs. Therefore, it takes 30 to 40 seconds to install each nut, while it only takes three seconds to knock off an oblong nut with a hand hammer; and because there are no nuts and bolts Connected together, the position deviation caused by the assembly gap is affected, so the positioning accuracy is high and the installation accuracy of the table edge is improved.

2. The installation is firm, eliminating the phenomenon that the existing round nut rotates and breaks the stone slab. Because the outer layer is wrapped with an oblong nut with a hard plastic positioning sleeve, when it is knocked into the oblong nut hole of the stone slab, the barbed positioning sleeve is compressed, and the base plate is tapered, making installation easy. Just knock it in gently with a hand hammer, and the compressed hard plastic barbs will cause a greater interference between the oblong nut and the oblong nut hole of the stone plate, so that the oblong nut will be firmly fixed. It is fixed in the oblong nut hole of the stone slab without any rotation, which eliminates the phenomenon of the stone countertop being punctured from time to time.

3. Eliminate the phenomenon of crushed stone slab joints and save valuable stone materials.

Since the oblong nut changes from the line contact of the original round nut to the surface contact, the contact area with the stone slab is greatly increased, excluding the arc contact surfaces at both ends. Compared with the existing round nut, the The oblong nut can increase the contact area by more than 40 times, reducing the pressure at the contact point, avoiding the stone slab being crushed and causing scrapping. The low pressure also extends the service life of the stone slab, thus saving a lot of precious stone.

4. Improved the performance of the pool table.

Due to the large contact area and low pressure, the tightening force can be greatly increased, making the table edge connection more reliable and solid. The noise is small and solid when hitting the ball, and the table edge will not loosen easily, thus significantly improving the competition and entertainment performance of the pool table. , promoting the development of this sport.

Description of drawings

Figure 1 is a schematic structural diagram of installing a round nut in a stone slab in the prior art;

Figure 2 is a top view of Figure 1;

Figure 3 is a sectional view of the A-A section in Figure 1;

Figure 4 is a sectional view of the B-B section in Figure 1;

Figure 5 is a front view of a stone slab connector of the present invention;

Figure 6 is a schematic structural diagram of the C-C section of the stone slab connector in Figure 5;

Figure 7 is a schematic structural diagram of the D-D section of the stone slab connector in Figure 5;

Figure 8 is a schematic diagram of the assembly structure between the stone slab and the edge of the billiard table of the present invention;

Figure 9 is a schematic diagram of the E-E cross-section of the assembly structure in Figure 8;

Figure 10 is a schematic diagram of the opening structure of the stone slab in Figure 8;

Figure 11 is a schematic structural diagram comparing the contact areas of round nuts and oblong nuts;

Figure 12 is a schematic three-dimensional structural view of the positioning sleeve of the stone slab connector in Figure 5.

Among them, 1-stone plate, 2-bolt, 3-round nut, 4-steel template, 5-marble glue, 6-nut hole, 7-table edge, 8-positioning sleeve, 9-oblong nut, 10- Contact position, 11-threaded hole, 12-chamfer, 13-barb, 14-through hole, 15-top plate, 16-bottom plate, 17-middle connection, 18-oblong nut hole, 19-bolt hole, 20-blind hole, 21-via hole, 22-tweed

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in this field and related stone connection industries without creative efforts fall within the scope of protection of the present invention.

Embodiment 1

This embodiment provides a slate connector for a billiard table. The slate connector is used in a billiard table to fixedly connect the edge 7 of the table to the side of the slate 1 forming the table top. Figure 5 illustrates the structure of the slate connector. Schematic diagram, Figure 6 illustrates a schematic cross-sectional structural diagram of the stone slab connector, and Figure 7 illustrates a schematic cross-sectional structural diagram of the longitudinal section of the stone slab connector;

The stone slab connector includes an oblong nut 9 and a positioning sleeve 8, as shown in Figures 6 and 7. The oblong nut 9 has an oblong structure and is provided with a through-threaded hole 11; Figures 7 and 8 As shown in the structure of Figure 9, the oblong nut 9 is provided with a threaded hole 11 extending transversely through it. The transverse direction of the oblong nut 9 is consistent with the axial direction of the threaded hole 11, and is consistent with the arrangement direction of the table edge 7 and the stone slab 1. Consistent; as shown in the structure of Figure 5, the center of the threaded hole 11 coincides with the center of the oblong nut 9 in the height direction and the center of the oblong nut 9 in the width direction. The height direction is from top to bottom or from top to bottom in Figure 5. The direction from bottom to top, the width direction is the direction from left to right or from right to left in Figure 5. When the stone slab connector is installed in the oblong nut hole 18 of the stone slab 1, the oblong nut The height direction of 9 is the thickness direction of the stone plate 1, and the width direction is the same as the length direction or width direction of the stone plate 1. That is, when the oblong nut 9 is installed on the long side of the stone plate 1, the width direction of the oblong nut 9 is the same as the length direction or width direction of the stone plate 1. The length direction of the stone plate 1 is the same. When the oblong nut 9 is installed on the short side of the stone plate 1, the width direction of the oblong nut 9 is the same as the width direction of the stone plate 1; the threaded hole 11 is located in the height direction of the oblong nut 9 and the geometric center in the width direction, which can make the force between the contact surface of the oblong nut 9 and the stone plate 1 uniform, further reducing the occurrence of stress concentration; chamfers 12 are provided at both ends of the threaded hole 11, such as As shown in the structure of Figure 5, the chamfers 12 provided at both ends of the threaded hole 11 facilitate the insertion of the screw end during assembly;

The positioning sleeve 8 is provided with an arc-shaped groove for accommodating the oblong nut 9, and is provided with barbs 13 extending along its circumferential direction on the outer side; the positioning sleeve 8 is also provided with a through hole extending along the axial direction of the threaded hole 11 14. The diameter of the through hole 14 is larger than the major diameter of the threaded hole 11; as shown in the structure of Figure 5, Figure 7 and Figure 12, a plurality of barbs 13 extending along its circumferential direction are provided on the outer side of the positioning sleeve. The barbs 13 can be arranged in parallel along the height direction on the outer side of the positioning sleeve 8; after the stone plate connector is installed into the oblong nut hole 18 of the stone plate 1, the barbs 13 can be used to prevent the stone plate connector from being removed from the oblong nut. loose or dropped from the hole 18; along the axial extension direction of the threaded hole 11, the positioning sleeve 8 is also provided with a through hole 14 corresponding to and connected to the position of the threaded hole 11. Through the through hole 14 provided in the positioning sleeve 8, the positioning sleeve 8 can be The screw end of the bolt 2 passes through to ensure the threaded connection length between the bolt 2 and the oblong nut 9, so that a reliable connection is formed between the stone slab 1 and the table edge 7;

The oblong nut 9 is embedded in the arc groove of the positioning sleeve 8 in a form-fitting manner, and forms an oblong cylindrical structure with the positioning sleeve 8 .

The above-mentioned stone slab connector not only has an oblong nut 9 with a threaded hole 11, but also is provided with a positioning sleeve 8 for inserting the oblong nut 9. The whole formed by the oblong nut 9 and the positioning sleeve 8 is an oblong column. In the overall structure, the outer side of the positioning sleeve 8 is provided with barbs 13. Since the barbs 13 are tapered, the size of the bottom is smaller and the size of the top is larger, so that the positioning sleeve 8 and the oblong nut 9 are formed. When the stone slab connector is interference-fitted into the oblong nut hole 18 of the stone slab 1, the smaller side of the barb 13 enters the oblong nut hole 18 first, and the larger side of the barb 13 enters the oblong nut hole 18 later. in the oblong nut hole 18, making it easier to install the stone connector, and preventing the barbs 13 from abutting and interfering with the inner wall of the oblong nut hole 18 when the stone connector withdraws from the oblong nut hole 18 , thereby inhibiting the stone slab connector from withdrawing from the oblong nut hole 18, and the positioning sleeve 8 realizes the stop function. The installation stability and reliability of the stone slab connector in the stone slab 1 are improved.

When the precision-made oblong nut 9 and the precision injection-molded positioning sleeve 8 are fitted together, a precision stone slab oblong connector that is slightly larger than the oblong nut hole 18 of the stone slab 1 is formed. When this connector When being knocked into the oblong nut hole 18 of the stone slab 1, the bottom surface of the connector contacts and is compacted with the bottom surface of the oblong nut hole 18 of the stone slab. This eliminates the freedom of rotation of the connector along the X-axis, the freedom of rotation along the Y-axis, and the freedom of movement along the Z-axis. The oblong shape of the connector eliminates the freedom of rotation along the Z-axis; the interference fit between the connector and the oblong nut hole 18 of the stone slab makes the two long sides close to each other, eliminating the need for rotation along the Z-axis. Degrees of freedom for movement along the X-axis, degrees of freedom for movement along the Y-axis. This kind of assembly simultaneously eliminates the six degrees of freedom of the stone slab connector, effectively satisfies the six-point positioning principle, and realizes the self-positioning function of the stone slab connector. The above-mentioned X-axis can be the length direction or the width direction of the billiard table, correspondingly, the Y-axis is the width direction or the length direction of the billiard table, and the Z-axis is the height direction of the billiard table.

In a specific implementation, as shown in the structure of Figure 7, the positioning sleeve 8 is provided with a top plate 15, a bottom plate 16, and an intermediate connection portion 17 fixedly connected between the top plate 15 and the bottom plate 16; the oblong nut 9 is installed on Between the top plate 15, the bottom plate 16 and the middle connecting part 17, and fitting with the middle connecting part 17, a long cylindrical structure is formed; the top plate 15 and the bottom plate 16 are both oblong plates; the oval shape of the top plate 15 is slightly larger than the stone slab. The oblong nut hole 18 of 1; the bottom of the oblong outer dimension of the base plate 16 is slightly smaller than the oblong nut hole 18 of the stone plate 1 and has a taper; the through hole 14 and the barb 13 are both provided in the middle connecting portion 17; The top surface of the oblong nut 9 fits the top plate 15, the bottom surface fits the bottom plate 16, and one side surface fits the middle connecting portion 17; the thickness of the top plate 15 can be less than, equal to or greater than the thickness of the bottom plate 16; the positioning sleeve 8 can be made by precision injection molding of plastic materials; the oblong nut 9 is made of copper, steel, iron, aluminum and other metal materials, and the oblong nut 9 is subjected to surface anti-rust treatment, and at the same time, the oblong nut 9 is The internal thread is carburized and quenched to increase the wear resistance of the internal thread of the oblong nut 9 and greatly increase the service life of the oblong nut 9, which is equivalent to increasing the service life of the stone slab 1.

The top plate 15, the bottom plate 16 and the intermediate connection part 17 of the positioning sleeve 8 are integrally injection molded; when the stone slab connector is installed in the oblong nut hole 18 of the stone slab 1, the positioning sleeve 8 made of plastic and the oblong nut The hole bottom of hole 18 is matched, and the thickness of the hole bottom can be fixed. It is ensured by the depth dimension of the processed stone plate hole. The center line of the oblong nut of the stone plate connector coincides with the center line of the bolt hole 19.

As shown in the structure of Figure 5 and Figure 6, the oblong nut 9 and the positioning sleeve 8 form an oblong cylindrical structure; the intermediate connection part 17 and the oblong nut 9 are arranged along the axial direction of the threaded hole 11 and fit together. ; The cross-sectional shape of the middle connecting portion 17 is C-shaped, and forms an arc-shaped groove in which the oblong nut 9 is embedded; the cross-sectional shape of the oblong nut 9 is oblong (can also be called a racetrack shape), including The flat surfaces on both sides and both ends are used to connect the arcuate surfaces of the flat surfaces on both sides. The outer peripheral surface of the oblong nut 9 matches the shape of the arc groove, so that when the oblong nut 9 is embedded in the positioning sleeve 8, the long The round nut 9 closely fits the arc groove of the positioning sleeve 8 through the flat surface and arc surface on the outer peripheral side. As shown in the structure of Figure 6, the stone slab connector adopts an oblong cylindrical structure, and the positioning sleeve 8 semi-encloses the outside of the oblong nut 9, that is, the top, bottom and part of the outer peripheral side of the oblong nut 9 They are all wrapped with positioning sleeves 8, so that the positioning sleeves 8 form a semi-enveloping structure for the oblong nut 9.

When the above-mentioned slate connector is used to connect the slate 1 and the table edge 7 of the billiard table, since it adopts an oblong cylindrical structure that can be self-positioned, the process of pre-assembly and positioning with steel templates and marble glue pouring is eliminated, saving money. A large amount of pre-installation time and workload are estimated to save more than ten times of working time and labor. In the existing technology, it takes 15 to 20 minutes for a worker to pour 30 nuts into a set of stone slabs. Therefore, it takes 30 to 40 seconds to install each nut, while it only takes three seconds to knock off an oblong nut 9 with a hand hammer. ; And because there are no nuts or bolts connected together, there is no influence of position deviation caused by assembly clearance, so the positioning accuracy is high and the installation accuracy of the table edge is improved.

The above-mentioned stone slab connector has a firm installation and can eliminate the phenomenon that the nut rotates and breaks the stone slab 1. Since the oblong nut 9 is wrapped with a hard plastic positioning sleeve 8 on the outside, when it is knocked into the oblong nut hole 18 of the stone slab 1 , the positioning sleeve 8 with barbs 13 is compressed and adopts a tapered design to make installation easy. Just tap it gently downward with a hand hammer, and the compressed hard plastic barbs 13 will cause a certain interference between the oblong nut 9 and the oblong nut hole 18 of the stone plate 1, so that the oblong nut 9 It is firmly fixed in the oblong nut hole 18 of the stone slab 1 and will not rotate at all, thus eliminating the phenomenon that the stone slab countertop is sometimes broken.

The use of the above-mentioned stone slab connector eliminates the crushing of the connection between the stone slab 1 and the table edge, saving valuable stone materials; as shown in the structure of Figure 11, the existing round nut 3 and the oblong nut 9 of the present invention are combined with the stone slab. The contact position 10 and contact area between 1 are compared: there is line contact between the existing round nut 3 and the stone plate 1, the contact position 10 is only two lines on the upper and lower sides of the threaded hole, and the actual contact area is about 10mm ² ; The oblong nut 9 of the present invention and the stone slab 1 are in surface contact. The contact position 10 includes not only the plane but also a section of arc surfaces at both ends of the plane. The actual contact between the oblong nut 9 of the present invention and the stone slab 1 is The contact area is approximately 410 mm ² in planar terms; the actual contact area of the oblong nut 9 of the present invention is more than 40 times larger than the actual contact area of the existing round nut 3, excluding the arc surface; because the oblong nut 9 9 changes from the original line contact to surface contact, which greatly increases the contact area with the stone plate 1. Compared with the existing round nut, the use of the oblong nut 9 can increase the contact area by about 40 times and reduce the contact area. The pressure avoids the stone slab being crushed and scrapped, and the low pressure prolongs the service life of the stone slab, thereby saving a large amount of precious stone.

The performance of the pool table can be improved by using the above-mentioned slate connectors. Since the contact area between the oblong nut 9 and the stone plate 1 is large and the pressure is small, the tightening force can be greatly increased, making the table edge connection more reliable and solid. The noise is small and solid when hitting the ball, and the table edge will not loosen easily, thus It has significantly improved the competition and entertainment performance of the pool table and promoted the development of this sport.

Embodiment 2

This embodiment provides a billiard table. The billiard table includes a stone slab 1, a table edge 7, bolts 2, a table cloth 22 and the slab connector provided in the above embodiment. As shown in the structure of Figure 10, the bottom surface of the slab 1 is provided with multiple An oblong nut hole 18 is provided on the side of the stone slab 1 with a bolt through hole 19 that communicates with the oblong nut hole 18 in a one-to-one position, and a side of the oblong nut hole 18 away from the bolt through hole 19 is also provided. A blind hole 20 is opposite and coaxial with the bolt through hole 19. The blind hole 20 can accommodate the screw end of the bolt 2; the oblong nut hole 18 is an oblong hole, and the oblong nut hole 18 is shaped to match the stone slab connector. , a stone slab connector with an oblong cylindrical structure is embedded in the oblong nut hole 18; as shown in the structure of Figure 8 and Figure 9, the table edge 7 is provided with a through hole 21 that corresponds to the position of the bolt through hole 19; the stone slab connection The oblong nut 9 of the stone slab connector is located on one side of the bolt hole 19, and the threaded hole 11 of the oblong nut 9 is opposite to and connected with the bolt hole 19. ; The screw end of the bolt 2 passes through the through hole 21, the table cloth 22 and the bolt through hole 19 in sequence and then is threadedly connected to the threaded hole 11, which is used to fix the table edge 7 on the stone slab 1 and at the same time clamp the table cloth 22 on the table. Between the edge 7 and the stone slab 1, a bolt 2 with a pointed end is used to facilitate piercing the tablecloth 22 through the pointed end, and avoid the process of making an incision on the tablecloth 22 due to the inability to penetrate the tablecloth 22 when a flat-head screw is used for connection. .

Using the billiard table with the above assembly structure, assemble the entire slate connecting piece into the oblong nut hole 18 of the slate 1. One end of the screw rod of the bolt 2 passes through the through hole 21 of the table side 7, the table cloth 22 and the bolt of the slate 1 in sequence. After the perforation 19 is threadedly connected to the threaded hole 11 of the oblong nut 9, the table edge 7 is pressed tightly and fixedly connected to the stone slab 1; the connection between the oblong nut 9 and the oblong nut hole 18 is made through a flat surface and a smooth curved surface. Cooperation can avoid stress concentration and prevent the oblong nut hole 18 of the stone plate 1 from cracking due to stress concentration. On the basis of improving the connection strength, the stone plate 1 can be avoided from being crushed, thereby saving a lot of valuables. stone; the oblong nut hole 18 and the stone plate connector both adopt an oblong structure, which can realize self-positioning between the stone plate connector and the stone plate 1, prevent the oblong nut 9 from rotating, and eliminate the need for the oblong nut 9 The rotation causes the stone slab 1 countertop to be broken, and automatically aligns the threaded hole 11 with the bolt hole 19, so that the bolt 2 can quickly thread with the threaded hole 11, and improves the matching between the bolt 2 and the oblong nut 9 Speed, shortening assembly time and improving pool table installation efficiency.

Moreover, since the barbs 13 are provided on the outside of the positioning sleeve 8, after the positioning sleeve 8 is installed into the oblong nut hole 18, the interference fit between the barbs 13 and the oblong nut hole 18 of the stone slab 1 can prevent the stone slab from slipping. The connecting piece becomes loose or falls from the oblong nut hole 18, so that the positioning sleeve 8 and the oblong nut 9 can be reliably embedded in the oblong nut hole 18 of the stone slab 1, which is beneficial to improving the reliability of the connection. and stability, which facilitates the subsequent disassembly and assembly of the table edge 7 and can also avoid the loss of the stone slab connector during the disassembly and assembly process.

A blind hole 20 for accommodating the end of the screw is provided on the side of the oblong nut hole 18 of the stone plate 1 away from the bolt hole 19, and the blind hole 20 is coaxial and connected with the threaded hole 11 and the bolt hole 19. When When the table edge 7 is fixedly installed on the stone slab 1 through the bolt 2, the screw end of the bolt 2 threadedly connected to the threaded hole 11 of the oblong nut 9 can extend into the blind hole 20, thereby ensuring that the bolt 2 is in contact with the thread. On the basis of fully connecting the holes 11, the freedom of selecting the length of the bolt 2 is increased.

To sum up, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

A stone slab connector for a billiard table, which is characterized in that it includes an oblong nut and a positioning sleeve; wherein:

The oblong nut has an oblong structure and is provided with a through-threaded hole;

The positioning sleeve is provided with an arc-shaped groove for accommodating the oblong nut, and is provided with barbs extending along its circumferential direction on the outer side;

The oblong nut is embedded in the arcuate groove in a form-fitting manner, and forms an oblong cylindrical structure with the positioning sleeve.
The stone slab connector according to claim 1, wherein the positioning sleeve is further provided with a through hole extending along the axial direction of the threaded hole, and the diameter of the through hole is larger than the major diameter of the threaded hole.
The stone slab connector according to claim 2, wherein the positioning sleeve is provided with a top plate, a bottom plate, and an intermediate connection portion fixedly connected between the top plate and the bottom plate;

The oblong nut is installed between the top plate and the bottom plate, and fits with the intermediate connection portion to form a long cylindrical structure;

The top plate and the bottom plate are both oblong plates;

The through holes and the barbs are both provided in the middle connecting portion.
The stone slab connector according to claim 3, wherein the cross-sectional shape of the middle connecting portion is C-shaped and forms the arc-shaped groove;

The intermediate connecting portion and the oblong nut are arranged and fitted along the axial direction of the threaded hole.
The stone slab connector according to claim 3, wherein the thickness of the top plate is smaller than the thickness of the bottom plate.
The stone slab connector according to any one of claims 1 to 5, wherein the center of the threaded hole coincides with the height direction center of the oblong nut and the width direction center of the oblong nut;

Both ends of the threaded hole are provided with chamfers.
The stone slab connector according to claim 6, wherein the positioning sleeve is provided with a plurality of parallel barbs along its height direction.
The stone slab connector according to claim 6, wherein the positioning sleeve is made of precision injection molding of plastic material;

The oblong nut is made of metal material, the outer surface is rust-proofed, and the thread is carburized and quenched.
A billiard table, characterized in that it includes a stone plate, a table edge, bolts, and a stone plate connector as described in any one of claims 1 to 8;

The bottom surface of the stone slab is provided with a plurality of oblong nut holes, and the side surfaces of the stone slab are provided with bolt perforations that communicate with the positions of the oblong nut holes in one-to-one correspondence;

The edge of the table is provided with via holes corresponding to the hole locations of the bolts;

The stone plate connector is embedded in the oblong nut hole with an interference fit, the oblong nut of the stone plate connector is located on the side of the bolt hole, and the threaded hole of the oblong nut is in contact with the bolt hole. The bolt holes are relatively connected;

The screw rod of the bolt passes through the through hole, the table cloth and the bolt hole in sequence and then is threadedly connected to the threaded hole for fixing the table edge to the stone slab.
The billiard table according to claim 9, wherein the stone plate is provided with a blind hole for accommodating the end of the screw rod on the side of the oblong nut hole away from the bolt hole, and the blind hole is arranged coaxially with the bolt hole.