CN110095048B - Screws, nuts and fastener assemblies - Google Patents
Screws, nuts and fastener assemblies Download PDFInfo
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- CN110095048B CN110095048B CN201810098957.2A CN201810098957A CN110095048B CN 110095048 B CN110095048 B CN 110095048B CN 201810098957 A CN201810098957 A CN 201810098957A CN 110095048 B CN110095048 B CN 110095048B
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- nail
- nut
- groove
- clamping
- piece
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
本发明提供了一种螺钉(101)，包含依次连接的钉头部(111)、钉杆部(112)、钉尾部(113)，钉头部(111)、钉杆部(112)以及钉尾部(113)中的任一个或任多个部位上设置有卡合槽(301)，所述卡合槽(301)内设置有卡合件(310)；所述卡合件(310)在卡合槽(301)中运动或变形进而能够在锁合状态与解锁状态这两种状态之间转换。本发明还提供了一种螺母(102)，所述螺母(102)上也设置上述的卡合槽(301)与卡合件(310)。本发明还提供了一种包含上述螺钉(101)与螺母(102)的紧固件组合。本发明提供的螺钉与螺母匹配后，螺纹对被紧固件形成了一次固定结构；卡合件在锁合状态下形成了二次固定结构，极大增强了本发明的固定能力。
The present invention provides a screw (101), comprising a nail head (111), a nail shank (112), and a nail tail (113) connected in sequence, wherein a snap-fit groove (301) is provided at any one or more of the nail head (111), the nail shank (112), and the nail tail (113), wherein a snap-fitting piece (310) is provided in the snap-fitting groove (301); the snap-fitting piece (310) moves or deforms in the snap-fitting groove (301) and can be switched between a locked state and an unlocked state. The present invention also provides a nut (102), wherein the snap-fitting groove (301) and the snap-fitting piece (310) are also provided on the nut (102). The present invention also provides a fastener combination comprising the screw (101) and the nut (102). After the screw provided by the present invention is matched with the nut, the thread forms a primary fixing structure for the fastened piece; the snap-fitting piece forms a secondary fixing structure in the locked state, which greatly enhances the fixing ability of the present invention.
Description
Technical Field
The invention relates to the field of fasteners, in particular to a screw, a nut and a fastener combination.
Background
Patent document CN103953629B discloses a fastener comprising a head portion provided with a through hole, a stem portion connected to the head portion, a guide rod, a slide shaft, and a stopper, the stem portion comprising two elongated portions and a hollow portion, the elongated portions being provided with receiving portions, the guide rod extending into the through hole and into the hollow portion and being axially movable by an operation of an operator, both ends of the slide shaft being received in the receiving portions and being movable with the guide rod, the stopper being rotatably mounted on the slide shaft and being rotatable under the action of gravity from a first position in which the stopper is capable of passing through the mounting hole with the stem portion, to a second position in which the stopper is capable of being locked on a member to be connected by an operation of the operator located on the side of the head portion. According to the patent document, the fastener is capable of clamping the member to be connected from both sides of the member to be connected and is required to be installed from only one side of the member to be connected. However, the fastener provided in this patent document is complex in structure and is prone to loosening during use.
Disclosure of Invention
In view of the drawbacks of the prior art, it is an object of the present invention to provide a screw, nut and fastener combination.
The screw comprises a nail head part, a nail rod part and a nail tail part which are sequentially connected, wherein any one or more parts of the nail head part, the nail rod part and the nail tail part are provided with clamping grooves, and clamping pieces are arranged in the clamping grooves;
The clamping piece moves or deforms in the clamping groove so as to be capable of being switched between a locking state and an unlocking state.
Preferably, the engagement groove is provided at any one or more of the following positions on the shank:
-one end of the pin tail in the axial direction;
-one end of the head of the nail in the axial direction;
-a central part in axial direction;
The plurality of clamping grooves are distributed along the circumferential direction of the nail rod part, or the circumferential direction of the nail rod part extends to form an annular groove or an arc-shaped groove;
the inclination angles of the groove bottom surfaces of the clamping grooves are equal or unequal along the circumferential direction of the nail rod part.
Preferably, the snap-fit element comprises any one or more of the following structures:
-a magnet pellet;
-the combined structure of the arcuate magnets and the closure elastic element;
-a resilient ring magnet;
-the combined structure of the arc-shaped elastic element and the magnet;
-a combined structure of two magnetic rings;
-a combination of wave ring and compression plate;
-a combination of an elastic matrix and magnetic particles.
Preferably, the tail part of the nail is provided with a positioning hole, and the positioning hole is communicated with the clamping groove;
a push rod is slidably arranged in the positioning hole, and the push rod is an elastic body or a rigid body;
The push rod can be contacted with the clamping piece, the positioning hole is also provided with a filling and sealing part, and the clamping piece and the filling and sealing part are respectively positioned at two ends of the push rod along the axial direction.
Preferably, a pushing spring is arranged in the clamping groove, and two ends of the pushing spring along the axial direction are respectively connected with the clamping piece and the tail part of the nail;
the pushing spring is in a release state, and the clamping piece is positioned at a corresponding position of the locking state.
The invention also provides a nut, wherein the nut is provided with an axial through hole, and an internal thread is arranged in the axial through hole;
The axial through hole is provided with a clamping groove along the hole wall surface of one of the two ends of the axial direction or the hole wall surface of all the two ends;
The clamping groove is internally provided with a clamping piece, and the clamping piece moves or deforms in the clamping groove so as to be capable of being switched between a locking state and an unlocking state.
Preferably, the bottom surface of the clamping groove is obliquely arranged;
The plurality of clamping grooves are arranged along the circumferential direction of the nut, the clamping piece comprises a magnet small ball, the width of the notch position of the clamping groove is smaller than the diameter of the magnet small ball, or
The clamping groove is annular, and the clamping piece comprises an annular or arc-shaped magnet.
Preferably, a positioning hole is formed in the circumferential end face of the nut, the positioning hole is communicated with the clamping groove, and a push rod is slidably arranged in the positioning hole;
the circumferential end face of the nut is also fixedly connected with a guide table, a guide hole is formed in the guide table, and the guide hole is communicated with the positioning hole.
The invention also provides a fastener combination, which comprises the screw and the nut;
the screw is detachably connected with the nut.
Preferably, the device also comprises a magneto-electric sensor and a pressure sensor;
the magneto-electric sensor is arranged on the fastened piece;
The pressure sensor is mounted between the nut and the fastened part and/or between the tail of the nail and the fastened part.
Compared with the prior art, the invention has the following beneficial effects:
1. After the screw is matched with the nut, the screw thread forms a primary fixing structure for the fastened piece, and the clamping piece forms a secondary fixing structure in a locking state, so that the fixing capability of the screw is greatly enhanced.
2. The invention can realize the secondary fixing function of the clamping piece in a contact or non-contact mode, wherein the non-contact mode controls the movement of the clamping piece through a magnetic field, and the invention has simple operation and is convenient for assembly and disassembly.
3. The invention can realize secondary fixation through various clamping piece structures, and is further applicable to more use occasions.
4. The position of the clamping groove on the nail rod part can be adjusted, and in the actual use process, the clamping piece can be contacted and clamped with another part with relatively hard material by changing the position of the clamping groove, so that a better secondary fixing effect is obtained.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a cross-sectional view of a screw in example 1;
FIG. 2 is a schematic view of the structure of a screw in embodiment 1;
FIG. 3 is a schematic view of two corresponding engaging members in one engaging groove with an annular groove;
FIG. 4 is a schematic view of a combination of an arcuate magnet and a closed spring as a snap-fit element;
FIG. 5 is a schematic view of the snap-fit element being a resilient ring magnet;
FIG. 6 is a schematic view of a combination of an arc-shaped elastic member and a magnet as a clamping member;
FIG. 7 is a schematic view of two magnetic rings for the clamping member;
FIG. 8 is a schematic view of a buckle part with a wavy ring and a pressing ring;
FIG. 9 is a schematic diagram of a woven ring and magnet particle combination;
FIG. 10 is a schematic cross-sectional view of a screw in example 3;
FIG. 11 is a schematic cross-sectional view of a screw in example 4;
FIG. 12 is a schematic view of a fastener assembly;
FIG. 13 is a schematic view of the screw mounting in example 5;
FIG. 14 is a cross-sectional view of the nut in example 6;
FIG. 15 is a right side view of the nut of example 6;
FIG. 16 is a left side view of the nut of example 6;
FIG. 17 is a cross-sectional view of a nut in example 7
FIG. 18 is a cross-sectional view of the nut of example 8;
FIG. 19 is a schematic view of the shape of the engagement block, such as a wedge block, a square block, etc.;
fig. 20 is a schematic structural diagram of a preferred embodiment in embodiment 1.
The figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Basic embodiment of screw 101 provided by the present invention:
The screw 101 provided by the invention comprises a nail head 111, a nail shaft 112 and a nail tail 113 which are sequentially connected, wherein any one or more parts of the nail head 111, the nail shaft 112 and the nail tail 113 are provided with an engaging groove 301, and an engaging piece 310 is arranged in the engaging groove 301. The nail head 111 is provided with external threads, when the nail head is assembled, the external threads are directly matched with a fastened piece, or after the external threads are matched with the nut 102, a primary fixing structure is formed on the fastened piece, the clamping piece 310 moves or deforms in the clamping groove 301, and can be converted between a locking state and an unlocking state, wherein the clamping piece 310 forms a secondary fixing structure in the locking state.
The following describes in detail various preferred embodiments of the basic embodiment of the screw 101:
Example 1:
As shown in fig. 1 and 2, the engagement groove 301 is provided on the shank 112 and is located on an end of the shank 112 near the tail portion 113 in the axial direction. Of course, it is preferable that the engaging groove 301 is also provided at one end of the shank 112 near the head 111 in the axial direction, and it is preferable that the engaging groove 301 is provided at both ends of the shank 112 in the axial direction. The plurality of clamping grooves 301 are distributed in the circumferential direction of the nail rod portion 112, the groove bottom surface is obliquely arranged, the clamping pieces 310 are magnet small balls 311, and one magnet small ball 311 is arranged in each clamping groove 301. The magnet small ball 311 can slide along the bottom surface of the groove under the action of an external magnetic field to change the radial position on the nail rod part 112, and the width of the notch position of the clamping groove 301 is slightly smaller than the diameter of the magnet small ball 311, so that the magnet small ball 311 is prevented from being separated from the clamping groove 301. In the locked state, a part of the magnet small ball 311 can reach the outside of the clamping groove 301, so that the screw 101 is contacted with the fastened structure to complete secondary fixation, and in the unlocked state, the whole magnet small ball 311 is positioned in the clamping groove 301, so that the screw 101 can be conveniently screwed into the fastened structure. Preferably, as shown in fig. 3, two or more magnet beads 311 are provided in each engagement groove 301, further increasing the strength of the secondary fixation. Preferably, the inclination angle of the groove bottom surfaces of the plurality of engaging grooves 301 may be different, the cross section of the engaging grooves 301 may be formed as needed, and one engaging groove 301 may be provided, but accordingly, the secondary fixing strength may be reduced. Preferably, as shown in fig. 19, the engaging member 310 may also be in the shape of a square block, a wedge block, or the like, and the structures such as a magnet square block and a magnet wedge block will not turn over in the engaging groove 301, so that the guiding performance is good when the permanent magnet is used as the engaging member 310, but the disadvantage is that the guiding is not as flexible and convenient as the magnet pellets 311. Preferably, as shown in fig. 20, the nail head 111 is further provided with a bidirectional engagement structure, two pairs of engagement grooves 301 with different groove bottom inclination directions are provided on the bidirectional engagement structure, and the pressing springs 204 and the magnet balls 311 are provided in the engagement grooves, so that the bidirectional engagement structure can simultaneously prevent the screw 101 from loosening in two axial directions during use, and the fixation is more reliable. In addition, in order to facilitate the smooth installation of the screw 101 on the fastened piece, the bidirectional clamping structure is further provided with an auxiliary magnet 330, during the installation process, the auxiliary magnet 330 attracts the magnet small ball 311 to the inside of the clamping groove 301, namely to be in the corresponding position of the unlocking state, after the screw 101 is installed in place, the auxiliary magnet 330 is removed, and the magnet small ball 311 reaches the corresponding position of the unlocking state under the action of the resilience force of the pushing spring 204.
Example 2:
This embodiment is a modification of the structure provided in embodiment 1. The engaging grooves 301 are not arranged individually in the circumferential direction of the shank 112, but extend in the circumferential direction of the shank 112 to form annular grooves or arc-shaped grooves, and the groove bottoms of the engaging grooves 301 are still arranged obliquely. As shown in fig. 4, the engaging member 310 is a combined structure of an arc-shaped magnet 312 and a closing elastic member 313, that is, the two arc-shaped magnets 312 are connected by the closing elastic member 313 to form an annular structure, and are sleeved on the bottom surface of the engaging groove 301, and the closing elastic member 313 may be a spring, a reed or the like. Under the action of an external magnetic field, the clamping piece 310 moves from right to left, the unlocking state is converted into the locking state, the closing elastic piece 313 is stretched, and the arc-shaped magnet 312 extends out of the clamping groove 301, so that secondary fixation is formed on the fastened piece.
Preferably, as shown in fig. 5, the engaging member 310 is an elastic ring-shaped magnet 314, and the elastic ring-shaped magnet 314 has a structure with a special direction, such as an oval shape, in the unlocked state, and in the locked state, the elastic ring-shaped magnet 314 stretches into a circular shape under the action of an external magnetic field, so as to realize the engaging function, and after the external magnetic field is removed, the elastic ring-shaped magnet 314 changes into a structure with a special direction again under the action of a rebound force, that is, the transition between the unlocked state and the locked state is completed through the elastic stretching and shrinking of the elastic ring-shaped magnet 314. Preferably, as shown in fig. 6, the engaging member 310 is a combined structure of an arc-shaped elastic member 315 and a magnet, that is, the arc-shaped elastic member 315 is in a non-closed structure, the arc-shaped elastic member 315 is used as a supporting frame, and one or more magnets are arranged along the length extension direction of the arc-shaped elastic member 315. Preferably, as shown in fig. 7, the engaging member 310 has a structure of two magnetic rings 316, the magnetic poles of the two magnetic rings 316 are oppositely arranged, a secondary fixing effect is obtained through repulsive force, and an external magnetic field can be applied to counteract or reduce repulsive force between the two magnetic rings 316 in the disassembly process, so that unlocking is facilitated. Preferably, as shown in fig. 8, the engaging member 310 is a combination of a wavy ring 317 and a pressing piece 318, and when the screw is installed, the wavy ring 317 is deformed, so that the pressing piece 318 is pressed to perform secondary fixing, and the pressing piece 318 may be a pressing ring or a pressing piece. Preferably, as shown in fig. 9, the engaging member 310 is an elastic base 319, the elastic base 319 is filled with magnetic particles, the elastic base 319 has a certain extensibility, and when the magnetic body is driven by an external magnetic field, the elastic base 319 displaces to complete the transition from the unlocked state to the locked state. Preferably, the elastic base 319 may be an elastic tube such as a rubber tube, or a braided ring with elasticity.
Preferably, the inclination angle of the bottom surface of the annular groove changes along with the circumferential extension, as shown in fig. 3, in the vertical section, the slope of the bottom surface of the upper groove is small, and the slope of the bottom surface of the lower groove is large. Further preferably, the engaging member 310 is circular, elliptical or arc-shaped, and a part or the whole of the engaging member 310 is a magnet. The locking piece 310 extends from the upper left to the lower right in the unlocking state, the locking piece 310 can be wholly positioned in the locking groove 301 because the slope of the bottom surface of the upper groove is longer, the lower part of the locking piece 310 moves leftwards and downwards under the action of an external magnetic field in the locking state of the locking piece 310, and the locking piece 310 can protrude out of the locking groove 301 because the slope of the bottom surface of the lower groove is shorter, so that the secondary fixing effect on a fastened piece is realized.
Example 3:
This embodiment is a modification of the structure provided in embodiment 1. As shown in fig. 10, the tail portion 113 of the nail is provided with a positioning hole 201, the positioning hole 201 is mutually communicated with the engagement groove 301, a push rod 202 is slidably mounted in the positioning hole 201, and the push rod 202 is used for pushing the engagement member 310 from the corresponding position in the unlocked state to the corresponding position in the locked state. The engaging member 310 does not necessarily have magnetism because of the contact type driving method. In the use process, after the screw 101 is installed in the fastened piece to complete primary fixing, the push rod 202 is pushed into the positioning hole 201, so that the clamping piece 310 is displaced along the bottom surface of the inclined groove, the locking state is converted to complete secondary fixing, and finally the positioning hole 201 is encapsulated to form the encapsulating part 203, and the position of the push rod 202 is fixed. The push rod 202 is a post-mounted elastomer, preferably the push rod 202 may also be a rigid body.
Example 4:
This embodiment is a modification of the structure provided in embodiment 1. As shown in fig. 11, a pressing spring 204 is provided in the engagement groove 301, and both ends of the pressing spring 204 in the axial direction are connected to the engagement piece 310 and the nail tail 113, respectively. The pushing spring 204 pushes the engaging member 310 to a position corresponding to the locked state in the released state. After the screw 101 is inserted into the fastened member, the engaging member 310 is always fixed twice by the urging spring 204.
Example 5
This embodiment is a modification of the structure provided in embodiment 1. As shown in fig. 13, the engagement groove 301 is shown in an intermediate position of the shank 112. In the actual use process, when one of the two fastened components is relatively soft, and the clamping member 310 contacts with the component with relatively soft material, the secondary fixing effect may be poor, and by changing the position of the clamping groove 301, the clamping member 310 can contact and clamp with the other component with relatively hard material, so as to obtain a better secondary fixing effect.
Basic embodiments of nut 102 provided by the present invention:
The nut 102 is provided with an axial through hole, and an internal thread is arranged in the axial through hole. The axial through hole is provided with a snap groove 301 on the hole wall surface of one of the both ends or on the hole wall surface of all the both ends in the axial direction. The engaging groove 301 is provided with an engaging member 310, and the engaging member 310 moves or deforms in the engaging groove 301 so as to be capable of switching between two states, i.e., a locked state and an unlocked state. Similar to the working principle of the screw 101, the internal thread on the nut 102 is matched with the screw 101 to finish primary fixation of the fastened piece, and the clamping block finishes secondary fixation of the fastened piece in a locking state.
The following describes various preferred embodiments of the basic embodiment of the nut 102 in detail:
Example 6:
As shown in fig. 14 to 15, an engaging groove 301 is provided on a wall surface of one end of the axial through hole of the nut 102 at both ends in the axial direction, and the other end is chamfered or rounded. The engaging groove 301 extends in the length direction and penetrates through the axial end face of the end of the nut 102 where the engaging groove 301 is located, the bottom surface of the engaging groove 301 is obliquely arranged, and the plurality of engaging grooves 301 are arranged in the circumferential direction of the nut 102. The engaging member 310 is a magnetic ball 311, the magnetic ball 311 can slide along the bottom surface of the slot under the action of an external magnetic field, the radial position of the pin shaft 112 is changed, the width of the notch of the engaging slot 301 is slightly smaller than the diameter of the magnetic ball 311, and the magnetic ball 311 is prevented from falling out of the engaging slot 301. In the locked state, a part of the magnet ball 311 can reach beyond the axial end face of the nut 102, so that the magnet ball contacts with the fastened piece to complete secondary fixation. In the unlocked state, the magnet ball 311 can reach the clamping groove 301 as a whole, and the nut 102 can be screwed onto the screw 101 conveniently.
Preferably, as shown in fig. 16, the engaging groove 301 is annular, and the engaging member 310 is also designed as an annular or arc-shaped magnet. Preferably, the engaging groove 301 does not penetrate through the axial end surface of the nut 102, and the second fixation of the fastened member may be indirectly completed by the engagement between the engaging member 310 and the screw 101. Preferably, one or more magnetic beads may be disposed in each of the engaging grooves 301. Preferably, the cross-sectional shape of the engaging groove 301 may be designed accordingly as required. Preferably, the engaging member 310 may be in the shape of a square block, a wedge block, or the like, and similarly, the width of the notch of the engaging groove 301 is slightly smaller than the width of the square block or wedge block engaging member 310, so as to prevent the engaging member 310 from being disengaged.
Example 7:
This embodiment is a modification of the structure provided in embodiment 6. As shown in fig. 17, the two ends of the axial through hole of the nut 102 along the axial direction are respectively provided with a clamping groove 301, and the clamping grooves 301 at the two ends may be symmetrically arranged, or may be different in factors such as inclination angle of the bottom surface of the groove, cross-sectional shape, axial length, and the like. The nut 102 also has an auxiliary magnet 330 mounted thereon for assisting in mounting or unlocking the engagement member 310.
Example 8:
this embodiment is a modification of the structure provided in embodiment 6. As shown in fig. 18, a positioning hole 201 is formed on a circumferential end surface of the nut 102, the positioning hole 201 is communicated with the engagement groove 301, a push rod 202 is slidably mounted in the positioning hole 201, and the push rod 202 is used for pushing the engagement member 310 from the unlocked state corresponding position to the locked state corresponding position. The engaging member 310 does not necessarily have magnetism because of the contact type driving method. The circumferential end face of the nut 102 is also fixedly connected with a guide table 205, a guide hole 206 is formed in the guide table 205, the guide hole 206 is communicated with the positioning hole 201, internal threads are formed in the guide hole 206 and/or the positioning hole 201, and the push rod 202 is matched with the internal threads. When the push rod 202 is screwed into the clamping groove 301, the driving positioning piece and the fastened piece are contacted and fixed. Preferably, the push rod 202 is also slidably mounted in the positioning hole 201, and when the nut 102 is matched with the screw rod to complete primary fixing of the fastened piece, the push rod 202 is pushed into the positioning hole 201, so that the clamping piece 310 is displaced along the bottom surface of the inclined groove, and is converted into a locking state to complete secondary fixing.
The fastener combination provided by the invention comprises the screw 101 and the nut 102, and the screw 101 and the nut 102 are detachably connected. As shown in fig. 12, in the embodiment, after the screw 101 and the nut 102 are assembled, the fastened member is provided with the magneto-electric sensor 400, the fastening block is a magnet, the magneto-electric sensor 400 can detect the change of the magnetic field caused by the change of the position of the fastening block, and then can detect whether the position of the fastening block reaches the position corresponding to the locking state under the action of the external magnetic field, and detect whether the fastener assembly is loosened in the use process.
A pressure sensor 500 capable of generating color change is arranged between the nut 102 and the fastened piece and/or between the tail 113 and the fastened piece, namely, the color of each part on the pressure sensor 500 can be changed along with the pressure, so that the pressure distribution of corresponding parts can be conveniently and directly penetrated.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (6)
1. A screw (101) is characterized by comprising a nail head (111), a nail rod (112) and a nail tail (113) which are sequentially connected, wherein any one or more parts of the nail head (111), the nail rod (112) and the nail tail (113) are provided with an engaging groove (301), and an engaging piece (310) is arranged in the engaging groove (301);
The clamping piece (310) moves or deforms in the clamping groove (301) so as to be capable of being switched between a locking state and an unlocking state;
the engagement groove (301) is provided at any one or more of the following positions on the nail shank (112):
-one end of the axial direction at which the tail (113) of the nail is located;
-an end of the axial direction at which the head (111) of the nail is located;
-a central part in axial direction;
the plurality of clamping grooves (301) are distributed along the circumferential direction of the nail rod part (112), or the circumferential direction of the nail rod part (112) extends to form an annular groove or an arc-shaped groove;
the inclination angles of the bottom surfaces of the clamping grooves (301) along the circumferential direction of the nail rod part (112) are equal or unequal;
The engagement member (310) comprises any one or more of the following:
-a magnet pellet (311);
-the combined structure of the arcuate magnet (312) and the closing spring (313);
-a resilient ring magnet (314);
-the combined structure of the curved elastic element (315) and the magnet;
-a combined structure of two magnetic rings (316);
-a combined structure of the wavy ring piece (317) and the pressing piece (318);
-a combined structure of an elastic matrix (319) and magnetic particles;
the clamping groove (301) is internally provided with a pushing spring (204), and two ends of the pushing spring (204) along the axial direction are respectively connected with the clamping piece (310) and the nail tail part (113);
In the released state, the pressing spring (204) is positioned at a position corresponding to the locked state by the engaging member (310).
2. The screw (101) according to claim 1, wherein the tail portion (113) is provided with a positioning hole (201), and the positioning hole (201) is communicated with the clamping groove (301);
A push rod (202) is slidably arranged in the positioning hole (201), and the push rod (202) is an elastomer or a rigid body;
The push rod (202) can be in contact with the clamping piece (310), the positioning hole (201) is also provided with the encapsulating part (203), and the clamping piece (310) and the encapsulating part (203) are respectively positioned at two ends of the push rod (202) along the axial direction.
3. A nut (102) is characterized in that an axial through hole is formed in the nut (102), and an internal thread is arranged in the axial through hole;
The axial through hole is provided with a clamping groove (301) on the hole wall surface of one of the two ends or the hole wall surface of all the two ends along the axial direction;
The clamping groove (301) is internally provided with a clamping piece (310), and the clamping piece (310) moves or deforms in the clamping groove (301) so as to be capable of being switched between a locking state and an unlocking state;
the bottom surface of the clamping groove (301) is obliquely arranged;
The plurality of clamping grooves (301) are arranged along the circumferential direction of the nut (102), the clamping piece (310) comprises a magnet small ball, the width of the notch position of the clamping groove (301) is smaller than the diameter of the magnet small ball (311), or
The clamping groove (301) is annular, and the clamping piece (310) comprises an annular or arc-shaped magnet.
4. A nut (102) according to claim 3, characterized in that a positioning hole (201) is provided on the circumferential end surface of the nut (102), the positioning hole (201) is communicated with the engagement groove (301), and a push rod (202) is slidably mounted in the positioning hole (201);
The circumferential end face of the nut (102) is also fixedly connected with a guide table (205), a guide hole (206) is formed in the guide table (205), and the guide hole (206) is communicated with the positioning hole (201).
5. A fastener combination comprising the screw (101) of any one of claims 1 to 2 and the nut (102) of any one of claims 3 to 4;
the screw (101) is detachably connected with the nut (102).
6. The fastener combination of claim 5, further comprising a magneto-electric sensor (400) and a pressure sensor (500);
A magneto-electric sensor (400) is mounted on the fastened piece;
A pressure sensor (500) is mounted between the nut (102) and the fastened member and/or between the shank (113) and the fastened member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098957.2A CN110095048B (en) | 2018-01-31 | 2018-01-31 | Screws, nuts and fastener assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098957.2A CN110095048B (en) | 2018-01-31 | 2018-01-31 | Screws, nuts and fastener assemblies |
Publications (2)
| Publication Number | Publication Date |
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| CN110095048A CN110095048A (en) | 2019-08-06 |
| CN110095048B true CN110095048B (en) | 2024-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810098957.2A Active CN110095048B (en) | 2018-01-31 | 2018-01-31 | Screws, nuts and fastener assemblies |
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| CN (1) | CN110095048B (en) |
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| CN110095048A (en) | 2019-08-06 |
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