阅读说明：本技术 一种新型防松螺栓及其使用方法 (Novel anti-loosening bolt and using method thereof ) 是由 梅列文 梅小文 袁佑斌 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种新型防松螺栓及其使用方法,涉及螺栓技术领域,为解决现有技术中的采用螺栓进行固定连接固定的设备或部件在受到振动时,螺栓容易发生晃动,导致螺母滑丝,螺栓松脱,影响螺纹固定的稳定性的问题。所述主螺杆的上方设置有主杆盖帽,所述主螺杆的外侧设置有主杆螺母,且主螺杆与主杆螺母螺纹连接,所述主螺杆的下方设置有副螺杆,且副螺杆穿进主螺杆的内部,所述副螺杆的下方安装有连接块,且副螺杆与连接块固定连接,所述连接块的下方安装有固定头,且连接块与固定头固定连接,所述固定头的内部设置有一字凹槽,所述连接块的外侧套设有转动环,所述转动环的外侧安装有限制杆,且转动环与限制杆固定连接。(The invention discloses a novel anti-loosening bolt and a use method thereof, relates to the technical field of bolts, and aims to solve the problems that in the prior art, when equipment or parts fixedly connected and fixed by bolts are vibrated, the bolts are easy to shake, so that nuts slide, the bolts are loosened, and the stability of thread fixing is affected. The top of lead screw is provided with the mobile jib block, the outside of lead screw is provided with the mobile jib nut, and lead screw and mobile jib nut threaded connection, the below of lead screw is provided with vice screw rod, and vice screw rod wears into the inside of lead screw, the connecting block is installed to the below of vice screw rod, and vice screw rod and connecting block fixed connection, the fixed head is installed to the below of connecting block, and connecting block and fixed head fixed connection, the inside of fixed head is provided with a word recess, the outside cover of connecting block is equipped with the swivel becket, the restriction lever is installed in the outside of swivel becket, and swivel becket and restriction lever fixed connection.)

1. The utility model provides a novel check bolt, includes main screw (1), its characterized in that: the upper portion of the main screw rod (1) is provided with a main rod cap (3), the outer side of the main screw rod (1) is provided with a main rod nut (2), the main screw rod (1) is in threaded connection with the main rod nut (2), an auxiliary screw rod (6) is arranged below the main screw rod (1), the auxiliary screw rod (6) penetrates into the inner portion of the main screw rod (1), a connecting block (24) is arranged below the auxiliary screw rod (6), the auxiliary screw rod (6) is fixedly connected with the connecting block (24), a fixing head (18) is arranged below the connecting block (24), the connecting block (24) is fixedly connected with the fixing head (18), a straight groove (25) is arranged inside the fixing head (18), the outer side of the connecting block (24) is sleeved with a rotating ring (17), the outer side of the rotating ring (17) is provided with a limiting rod (19), and the rotating ring (17) is fixedly connected with the limiting rod (19), an auxiliary rod nut (4) is arranged above the main rod cap (3), and the distance between the lower end face of the main screw rod (1) and the upper end face of the auxiliary rod nut (4) is smaller than the total length of the auxiliary screw rod (6).

2. The novel check bolt of claim 1, wherein: the top pressure head (23) is installed to the top of vice screw rod (6), and vice screw rod (6) and top pressure head (23) fixed connection, vice pole external screw thread (22) are installed in the outside of vice screw rod (6), and vice screw rod (6) and vice pole external screw thread (22) set up structure as an organic whole, fixed connector post (11) is installed to the top of main screw rod (1), and main screw rod (1) and fixed connector post (11) fixed connection.

3. The novel check bolt of claim 2, wherein: mobile jib external screw thread (13) are installed in the outside of king-screw (1), and king-screw (1) sets up structure as an organic whole with mobile jib external screw thread (13), the inboard of king-screw (1) is provided with mobile jib internal thread (14), and king-screw (1) and mobile jib internal thread (14) set up structure as an organic whole, the symmetry is provided with restriction slotted hole (5) respectively on the preceding terminal surface of king-screw (1) and the rear end face.

4. The novel check bolt of claim 3, wherein: the inside of king-rod (1) is provided with through-hole (15) in the king-rod, and in the king-rod through-hole (15) and restriction slotted hole (5) intercommunication, the inside of king-rod (1) is provided with along the both sides of king-rod through-hole (15) and strengthens slotted hole (20), and strengthens slotted hole (20) and king-rod through-hole (15) intercommunication.

5. The novel check bolt of claim 4, wherein: strengthen the inside of slotted hole (20) and be provided with reinforcing plate (12), and reinforcing plate (12) and king screw (1) fixed connection, rubber cushion (21) are installed to one side of reinforcing plate (12), and reinforcing plate (12) pass through glue fixed connection with rubber cushion (21).

6. The novel check bolt of claim 1, wherein: the inside of mobile jib block (3) is provided with main nut inner through hole (10), the outside of main nut inner through hole (10) is provided with anticreep groove (9) along the inside of mobile jib block (3), and anticreep groove (9) and main nut inner through hole (10) intercommunication.

7. The novel check bolt of claim 6, wherein: the inside of vice pole nut (4) is provided with vice nut inner through hole (16), spliced pole (7) are installed to the below of vice pole nut (4), and vice pole nut (4) and spliced pole (7) fixed connection.

8. The novel check bolt of claim 7, wherein: the connecting column (7) penetrates into the inner part of the main nut inner through hole (10), the anti-falling rods (8) are installed on two sides of the connecting column (7), and the connecting column (7) is fixedly connected with the anti-falling rods (8).

9. A use method of a novel anti-loose bolt is realized based on the novel anti-loose bolt of any one of claims 1 to 8, and is characterized by comprising the following steps:

s1: inserting a main screw rod (1) into a bolt hole of a connected and fixed device or component, and then screwing a main rod nut (2) on the outer side of the main screw rod (1) from the lower part of the main screw rod (1);

s2: then, the main screw (1) and the main rod nut (2) are screwed tightly through a tool, and then the auxiliary screw (6) is screwed into the main rod inner through hole (15) of the main screw (1);

s3: in the process that the auxiliary screw (6) is screwed into the main screw (1) and rises, the jacking head (23) can be in contact with the rubber cushion (21) and jacks the rubber cushion (21), so that the reinforcing plate (12) is acted by the acting force towards the outer side direction of the main screw (1), and the top of the reinforcing plate (12) moves outwards and is opened;

s4: continuously screwing in the auxiliary screw rod (6) to enable the auxiliary screw rod (6) to penetrate through the auxiliary rod nut (4) and to be fixedly connected with the auxiliary rod nut (4) in a threaded manner;

s5: when the limiting rod (19) rises to the bottom end of the main screw rod (1) along with the auxiliary screw rod (6), the limiting rod (19) is rotated to enable the limiting rod (19) to be aligned with the limiting slotted hole (5);

s6: then, an auxiliary screw rod (6) which protrudes out of the upper end of the auxiliary rod nut (4) is rotated, so that the auxiliary screw rod (6) drives a limiting rod (19) to ascend along a limiting slotted hole (5) until the limiting rod (19) is in contact with the bottom surface of the main rod nut (2), the main rod nut (2) is limited, and the main rod nut (2) is prevented from slipping.

Technical Field

The invention relates to the technical field of bolts, in particular to a novel anti-loosening bolt and a using method thereof.

Background

Along with the continuous development of society, the modernization of city is more and more fast, each industry field is developing fast, various manufacturing factories are established continuously, the mechanical equipment that various different fields used is constantly developed, a complete equipment production, need to process the part in different positions of equipment in advance, then connect these equipment parts and assemble, need the bolt to fix different parts in the assembling process, the bolt is the cylindrical threaded fastening machine part of a adapted nut, often used in the fixed connection between various spare parts, the bolt is widely used in the trades such as electronic product, digital product, power equipment, electromechanical machine product, the bolt has different types, according to the head shape branch, there are square head, button head, countersunk head, hexagon head, etc..

When equipment or components fixedly connected and fixed by bolts are vibrated, the bolts are easy to shake, so that nuts slide, the bolts loosen and the stability of thread fixation is influenced; therefore, the market urgently needs to develop a novel anti-loosening bolt and a using method thereof to help people solve the existing problems.

Disclosure of Invention

The invention aims to provide a novel anti-loosening bolt and a using method thereof, and aims to solve the problems that when equipment or parts which are fixedly connected and fixed by adopting the bolt in the background technology are vibrated, the bolt is easy to shake, so that the nut is easy to slip, the bolt is easy to loosen, and the stability of thread fixing is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel anti-loosening bolt, includes the main screw rod, the top of main screw rod is provided with the mobile jib block, the outside of main screw rod is provided with the mobile jib nut, and main screw rod and mobile jib nut threaded connection, the below of main screw rod is provided with vice screw rod, and vice screw rod wears into the inside of main screw rod, the connecting block is installed to the below of vice screw rod, and vice screw rod and connecting block fixed connection, the fixed head is installed to the below of connecting block, and connecting block and fixed head fixed connection, the inside of fixed head is provided with a word recess, the outside cover of connecting block is equipped with the swivel becket, the regulating stem is installed in the outside of swivel becket, and swivel becket and regulating stem fixed connection, the top of mobile jib block is provided with vice rod nut, distance between terminal surface to vice rod nut up end under the main screw rod is less than the total length of vice screw rod.

Preferably, the top pressure head is installed to the top of vice screw rod, and vice screw rod and top pressure head fixed connection, vice pole external screw thread is installed in the outside of vice screw rod, and vice screw rod and vice pole external screw thread set up structure as an organic whole, the fixed connector post is installed to the top of main screw rod, and main screw rod and fixed connector post fixed connection.

Preferably, the mobile jib external screw thread is installed in the outside of king-screw, and the king-screw sets up structure as an organic whole with the mobile jib external screw thread, the inboard of king-screw is provided with the mobile jib internal thread, and the king-screw sets up structure as an organic whole with the mobile jib internal thread, the symmetry is provided with the restriction slotted hole respectively on the preceding terminal surface of king-screw and on the rear end face.

Preferably, the inside of king-screw is provided with the mobile jib through-hole, and mobile jib through-hole and restriction slotted hole intercommunication, the inside of king-screw is provided with the enhancement slotted hole along the both sides of mobile jib through-hole, and strengthens slotted hole and mobile jib through-hole intercommunication.

Preferably, the inside of strengthening the slotted hole is provided with the reinforcing plate, and reinforcing plate and king-screw fixed connection, the rubber cushion is installed to one side of reinforcing plate, and the reinforcing plate passes through glue fixed connection with the rubber cushion.

Preferably, the inside of mobile jib block is provided with main nut inner through hole, the outside of main nut inner through hole is provided with the anticreep groove along the inside of mobile jib block, and the anticreep groove communicates with main nut inner through hole.

Preferably, the inside of vice pole nut is provided with the interior through-hole of vice nut, the spliced pole is installed to the below of vice pole nut, and vice pole nut and spliced pole fixed connection.

Preferably, the connecting column penetrates into the inner part of the through hole in the main nut, the anti-falling rods are arranged on two sides of the connecting column, and the connecting column is fixedly connected with the anti-falling rods.

A using method of a novel anti-loose bolt comprises the following steps:

s1: inserting the main screw into a bolt hole of the connected and fixed equipment or component, and then screwing the main rod nut on the outer side of the main screw from the lower part of the main screw;

s2: then, the main screw and the main rod nut are screwed tightly through a tool, and then the auxiliary screw is screwed into the main rod inner through hole of the main screw;

s3: when the auxiliary screw is screwed into the main screw to rise, the jacking head can be in contact with the rubber cushion and jack the rubber cushion, so that the reinforcing plate is acted by the action force towards the outer side of the main screw, and the top of the reinforcing plate can move outwards and open;

s4: continuously screwing in the auxiliary screw rod to enable the auxiliary screw rod to penetrate through the auxiliary rod nut and be fixedly connected with the auxiliary rod nut in a threaded manner;

s5: when the limiting rod rises to the bottom end of the main screw rod along with the auxiliary screw rod, the limiting rod is rotated to align the limiting rod with the limiting slotted hole;

s6: and then, rotating an auxiliary screw rod protruded from the upper end of the auxiliary rod nut to enable the auxiliary screw rod to drive the limiting rod to ascend along the limiting groove hole until the limiting rod is contacted with the bottom surface of the main rod nut, limiting the main rod nut and preventing the main rod nut from sliding.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the auxiliary screw rod, the single auxiliary screw rod is arranged inside the main screw rod to strengthen the fixation of the bolt, the rotating ring is arranged on the auxiliary screw rod, and the limiting rod is arranged outside the rotating ring, so that when the bolt is installed, the auxiliary screw rod is screwed into the main rod inner through hole of the main rod of the main screw rod and is screwed with the auxiliary rod nut, the limiting rod limits the main rod nut below the main rod nut, the main rod nut is prevented from sliding due to the shaking of the main screw rod caused by vibration, the fastening performance of the bolt is improved, and the anti-loosening capacity of the bolt is increased.

2. According to the invention, through the arrangement of the reinforcing plates, two reinforcing plates are arranged on two sides of the main screw, wherein one side of each reinforcing plate is provided with the rubber cushion, and further, when the auxiliary screw is screwed into the main screw, the top end part of the auxiliary screw can be pressed against the rubber cushion, so that the reinforcing plates are subjected to acting force towards the outer side direction of the main screw, the top parts of the reinforcing plates can move outwards and are opened, the mounting tightness of the main screw is improved, and the stability of the bolt is increased.

Drawings

FIG. 1 is a general schematic view of a novel anti-loosening bolt of the present invention;

FIG. 2 is a cross-sectional view of the main screw and main stem cap of the present invention;

FIG. 3 is a schematic structural view of the sub-rod nut and connecting post of the present invention;

FIG. 4 is an enlarged view of the portion A of the present invention;

FIG. 5 is an enlarged view of the portion B of the present invention;

FIG. 6 is a cross-sectional view of the slave screw of the present invention;

FIG. 7 is an enlarged view of the site C of the present invention;

fig. 8 is a bottom view of the retaining head of the present invention.

In the figure: 1. a main screw; 2. a main rod nut; 3. a main rod cap; 4. an auxiliary rod nut; 5. a restraining slot; 6. an auxiliary screw; 7. connecting columns; 8. an anti-drop rod; 9. a drop-proof groove; 10. a main nut inner through hole; 11. fixing the connecting column; 12. a reinforcing plate; 13. external threads of the main rod; 14. the main rod is internally threaded; 15. a through hole in the main rod; 16. a through hole is formed in the auxiliary nut; 17. a rotating ring; 18. a fixed head; 19. a restraining bar; 20. a reinforcing slot; 21. a rubber cushion; 22. an external thread of the auxiliary rod; 23. a pressing head is pressed; 24. connecting blocks; 25. a straight groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-8, an embodiment of the present invention: a novel anti-loosening bolt comprises a main screw rod 1, a fixed post 11 is installed above the main screw rod 1, the main screw rod 1 is fixedly connected with the fixed post 11, a through hole is formed in the fixed post 11, the diameter of the through hole is the same as that of a main rod inner through hole 15, a main rod outer thread 13 is installed on the outer side of the main screw rod 1, the main screw rod 1 and the main rod outer thread 13 are arranged into an integral structure, the main rod outer thread 13 is arranged to enable the main screw rod 1 to be in threaded connection with a main rod nut, a main rod inner thread 14 is arranged on the inner side of the main screw rod 1, the main screw rod 1 and the main rod inner thread 14 are arranged into an integral structure, limiting groove holes 5 are symmetrically formed in the front end face and the rear end face of the main screw rod 1 respectively, the limiting groove holes 5 are ascending track grooves of a limiting rod 19 and limit the limiting rod 19, the limiting rod 19 cannot rotate, the main rod inner through hole 15 is formed in the main screw rod 1, and mobile jib through-hole 15 and restriction slotted hole 5 intercommunication, the setting of mobile jib through-hole 15, make vice screw rod 6 can inject the inside of king screw 1, the inside of king screw 1 is provided with along the both sides of mobile jib through-hole 15 and strengthens slotted hole 20, and strengthen slotted hole 20 and mobile jib through-hole 15 intercommunication, the inside of strengthening slotted hole 20 is provided with reinforcing plate 12, and reinforcing plate 12 and 1 fixed connection of king screw, rubber cushion 21 is installed to one side of reinforcing plate 12, and reinforcing plate 12 passes through glue fixed connection with rubber cushion 21, the setting of reinforcing plate 12, can improve the compactness of the installation of king screw 1, the stability of bolt has been increased.

Further, a main rod nut 2 is arranged on the outer side of the main screw rod 1, the main screw rod 1 is in threaded connection with the main rod nut 2, a main rod cap 3 is arranged above the main screw rod 1, the main rod cap 3 is hexagonal, the main rod cap 3 can be clamped and fixed by a hexagonal wrench, the bolt fixing convenience is improved, a main nut inner through hole 10 is arranged inside the main rod cap 3, a drop-off prevention groove 9 is arranged inside the main rod cap 3 along the outer side of the main nut inner through hole 10, the drop-off prevention groove 9 is communicated with the main nut inner through hole 10, the drop-off prevention groove 9 is an annular groove arranged outside the main nut inner through hole 10, an auxiliary rod nut 4 is arranged above the main rod cap 3, the distance between the lower end face of the main screw rod 1 and the upper end face of the auxiliary rod nut 4 is smaller than the total length of the auxiliary screw rod 6, the auxiliary rod nut 4 is hexagonal, the auxiliary rod nut 4 can be clamped and fixed by the hexagonal wrench, the convenience of connecting and fixing the auxiliary screw 6 is improved, an auxiliary nut inner through hole 16 is arranged in the auxiliary rod nut 4, threads are arranged in the auxiliary nut inner through hole 16, so that the auxiliary screw 6 can be in threaded connection with the auxiliary rod nut, a connecting column 7 is arranged below the auxiliary rod nut 4, the auxiliary rod nut 4 is fixedly connected with the connecting column 7, the inside of the connecting column 7 is provided with a through hole with the diameter the same as that of the through hole 16 in the auxiliary nut, so that the auxiliary screw 6 can normally pass through the connecting column 7 without influencing the normal installation of the auxiliary screw 6, the connecting column 7 penetrates into the inside of the through hole 10 in the main nut, two sides of the connecting column 7 are both provided with anti-falling rods 8, and spliced pole 7 and anticreep pole 8 fixed connection, anticreep pole 8 sets up in the inside of anticreep groove 9, and anticreep pole 8's setting prevents that auxiliary rod nut 4 from dropping, has improved the integrality of bolt at the in-process of taking, has increased the convenience of using.

Further, an auxiliary screw 6 is arranged below the main screw 1, the auxiliary screw 6 penetrates into the main screw 1, a connecting block 24 is arranged below the auxiliary screw 6, the auxiliary screw 6 is fixedly connected with the connecting block 24, the diameter of the connecting block 24 is smaller than that of the auxiliary screw 6, a fixing head 18 is arranged below the connecting block 24, the connecting block 24 is fixedly connected with the fixing head 18, the diameter of the fixing head 18 is smaller than that of the auxiliary screw 6 and larger than that of the connecting block 24, a straight groove 25 is arranged inside the fixing head 18, the straight groove 25 is arranged, when the auxiliary screw 6 is difficult to be screwed into the main screw 1 by hand, the auxiliary screw 6 can be flexibly rotated by inserting a straight screwdriver into the straight groove 25, the practicability of screwing the auxiliary screw 6 into the main screw 1 is improved, a rotating ring 17 is sleeved outside the connecting block 24, and the rotating ring 17 can rotate, the position of the limiting rod 19 can be changed, the diameter of the outer side of the rotating ring 17 is smaller than that of the auxiliary screw rod 6, the limiting rod 19 is installed on the outer side of the rotating ring 17, the rotating ring 17 is fixedly connected with the limiting rod 19, two limiting rods 19 are arranged, when the bolt is installed, the fastening performance of the bolt can be improved through the limitation of the limiting rod 19 on the main rod nut 2, the anti-loosening capacity of the bolt is improved, a jacking head 23 is installed above the auxiliary screw rod 6, the auxiliary screw rod 6 is fixedly connected with the jacking head 23, the jacking head 23 is arranged, when the auxiliary screw rod 6 is screwed into the main screw rod 1, the jacking head 23 can jack the rubber cushion 21 to press the two sides tightly, the auxiliary rod external thread 22 is installed on the outer side of the auxiliary screw rod 6, the auxiliary screw rod 6 and the auxiliary rod external thread 22 are arranged into an integral structure, the auxiliary rod external thread 22 is arranged, when the auxiliary screw rod 6 is installed, the auxiliary rod external thread 22 is matched with the main rod 14, the auxiliary screw rod 6 can be in threaded connection with the main screw rod 1, and the stability of the auxiliary screw rod 6 is improved.

A using method of a novel anti-loose bolt comprises the following steps:

s1: inserting a main screw rod 1 into a bolt hole of a device or a component to be connected and fixed, and then screwing a main rod nut 2 on the outer side of the main screw rod 1 from the lower part of the main screw rod 1;

s2: then, the main screw rod 1 and the main rod nut 2 are screwed tightly through a tool, and then the auxiliary screw rod 6 is screwed into the main rod inner through hole 15 of the main screw rod 1;

s3: in the process that the auxiliary screw 6 is screwed into the main screw 1 and rises, the jacking head 23 can be contacted with the rubber cushion 21 and jack the rubber cushion 21, so that the reinforcing plate 12 is acted by the acting force towards the outer side of the main screw 1, and the top of the reinforcing plate 12 can move outwards and open;

s4: continuously screwing in the auxiliary screw rod 6 to enable the auxiliary screw rod 6 to penetrate through the auxiliary rod nut 4 and to be fixedly connected with the auxiliary rod nut 4 in a threaded manner;

s5: when the restriction lever 19 ascends to the bottom end of the main screw bar 1 along with the sub screw bar 6, the restriction lever 19 is rotated so that the restriction lever 19 is aligned with the restriction slot hole 5;

s6: and then the auxiliary screw 6 which is extruded from the upper end of the auxiliary rod nut 4 is rotated, so that the auxiliary screw 6 drives the limiting rod 19 to ascend along the limiting slotted hole 5 until the limiting rod 19 is contacted with the bottom surface of the main rod nut 2, the main rod nut 2 is limited, and the main rod nut 2 is prevented from slipping.

The working principle is as follows: when the device is used, the main screw rod 1 is inserted into a bolt hole of connected and fixed equipment or components, then the main rod nut 2 is screwed outside the main screw rod 1 from the lower part of the main screw rod 1, then a wrench is used for clamping and fixing the main rod cap 3, the main rod nut 2 is screwed by a wrench, the main screw rod 1 and the main rod nut 2 are screwed, then the auxiliary screw rod 6 is screwed into the main rod inner through hole 15 of the main screw rod 1 by hands, one end of the jacking head 23 faces upwards, when the wrench is strenuous, the straight screwdriver is inserted into the straight groove 25 for screwing, in the process that the auxiliary screw rod 6 is screwed into the main screw rod 1 to ascend, the jacking head 23 can be contacted with the rubber cushion 21 and jack the rubber cushion 21, the reinforcing plate 12 is acted by the direction of the outer side of the main screw rod 1, so that the top of the reinforcing plate 12 can move outwards and expand, the main screw rod 1 is installed more tightly, the auxiliary rod nut 4 is clamped and fixed by a wrench, and continuously screwing in the auxiliary screw 6 to enable the auxiliary screw 6 to penetrate through the auxiliary rod nut 4 and be fixedly connected with the auxiliary rod nut 4 in a threaded manner, when the limiting rod 19 rises to the bottom end of the main rod nut 1 along with the auxiliary screw 6, rotating the limiting rod 19 to enable the limiting rod 19 to be aligned with the limiting slotted hole 5, then rotating the auxiliary screw 6 protruded from the upper end of the auxiliary rod nut 4 to enable the auxiliary screw 6 to drive the limiting rod 19 to rise along the limiting slotted hole 5 until the limiting rod 19 is contacted with the bottom surface of the main rod nut 2, limiting the main rod nut 2, and preventing the main rod nut 2 from sliding.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.