CN1190454A

CN1190454A - Device for connecting structural parts

Info

Publication number: CN1190454A
Application number: CN96195294A
Authority: CN
Inventors: 蓝约瑟
Original assignee: SENOIHUA PLASTICS CO Ltd
Current assignee: SENOIHUA PLASTICS CO Ltd
Priority date: 1995-07-13
Filing date: 1996-05-31
Publication date: 1998-08-12
Also published as: CA2226737A1; EP0837992A1; WO1997003295A1; AU6123996A

Abstract

The invention concerns a device for connecting two wooden parts which are to be bonded together and have mutually abutting flat surfaces. The device comprises two sections (31, 32), each of which is provided with barb-like projections (35). The two sections (31, 32) are movably guided in the axial direction (36) and mutually spring-loaded. The sections are held at a spacing by a spacer which is destroyed as a result of an impact being applied to one of the wooden parts to be connected. The two sections (31, 32) are consequently moved towards each other owing to the spring-loading and the two wooden parts are impact into each other.

Description

Device for connecting structural parts

The present invention relates to a kind of can be with the device of two member engages, especially relate to the device that can engage two desire members that its butting surface is bonding.

For example, if there are two wooden parts to desire to be bonded together, normally engage with dowel, this dowel for example is the wooden link of pin type that is provided with longitudinal fluting, so that increase adhesiveness.In addition,, can firmly force together for making this two wooden part between hardening period at tackiness agent, be to reach this purpose with anchor clamps or similar device mostly.

Yet, but can't use anchor clamps in many cases, for example when two wooden parts do not surround a right angle, or under certain a little situation that wooden part is set firmly wooden ceiling board.

The DE8610592U1 patent disclosure a kind of as described in the present invention the device, use this device, make three sheets form a cored beam.Therefore this device is provided with the halves of barbed protuberances thing, and links together with the hinge of diaphragm type, meets at right angles when opening, and just available barbed protuberances thing inserts in the respective slot in the corner of this hollow beam column.

At US-A3, in 680, No. 898 disclosed devices of patent, on a slice plate, leave broad flat groove together, and on another plate, do out narrow dark groove together in addition, this two plate is engaged.Method is the barb-like axle that a hook component is set in dark groove, and is provided with tongue in wide groove, allows hook component laterally slide on this tongue, fixes with chock again.

It is a kind of as dowel that the present invention's purpose is to provide, but do not need the device for connecting structural parts of anchor clamps or similar apparatus.

Above-mentioned purpose realizes by the device that claim 1 of the present invention limited, and in dependent claims of the present invention, other advantage of the present invention is embodied.

One embodiment of device of the present invention, its form can be a dowel or pin.This pin radially separates from the centre.Each is provided with a hole member to be joined on the surface of butt joint.The halves of pin is inserted respectively in these two holes.

The two ends of pin are provided with the barbed protuberances thing, but side direction leans against on this pin for example in pin is imported into specific recess or hole the time, but the lug boss that when stressed, can hold up, thereby prevent that pin is drawn out from the hole.

For this reason, the barbed protuberances thing can be set as the flexible appendage on the pin periphery, for example ring or the spiral thing that extends around pin.If pin is made with plastics, these barbed protuberances things can be one-body molded with the specific portion of this pin so.

The halves of device is by divider antagonism elasticity tension and be held in separated position, but towards a member wherein, and is related during also towards axially the imposing bang and for example knock with nail hammer of device, just can make a mess of this divider.

For this reason, divider can for example a latch or silver constitute by a kind of elongated elements with specified point of rupture.This divider also can needn't knock and the mode made a mess of forms one of them member to be joined with a kind of.It can by, for example, body constitutes, hollow body especially is for example by made sheath of glass or this class friable material of pottery or bulb etc.

Yet divider also can be in different ways, utilizes extraneous effect and that it is become is invalid, the heat effect of for example using Hot-air fan or radiant heater and being produced.For this reason, divider can be a kind of bimetallic element.This bimetallic element can be elongated elements, for example a latch or silver, and the halves of device is kept separately, and when being heated with a kind of can allow spring with this halves towards each other the mode that draws in of the other side bend.

When two and half ones of this device had been inserted within the recess of member to be joined, the barbed protuberances thing that falls down when importing within this recess will be holded up a bit a little.This can separate the halves of device, for example 1mm, so that the gap that produces correspondence between member to be joined.

For eliminating this gap, the halves of the present invention's device the other side towards each other imposes elastic load.This elastic load can by, for example one sets firmly wherein half one of auto levelizer with the one end, provides and the other end sets firmly the elastomer of second half one.Certainly, also can be without this elastomer, use instead halves that a kind of flat helical spring or analog make this device towards each other the other side apply load.

When the halves of this device has been inserted into two recesses of two members to be joined, knock from one of them of this two member of outer bound pair, for example use nail hammer to knock, make the shim fracture, it is invalid just can to allow this shim become.For this reason, shim can be provided with a specified point of rupture, or is made of easily broken or frangible material.Can make it become invalid shim through heating if be provided with, just with Hot-air fan or radiant heater the position heating that two members are provided with this device is got final product so.

To the elastic load that this device halves is applied, can impel them to have the trend that the other side towards each other moves, thereby be made a mess of or become when invalid at shim, treat that two members of combination just are pressed together automatically.The gap between two members to be joined has been eliminated in this measure.

If the divider that forms is the elongated elements that has specified point of rupture, two parts by the elongated elements that this specified point of rupture engaged are fixed on the halves of device, and preferably can stagger after stressed each other.This measure guarantees that two parts of elongated elements can be after the fracture of specified point of rupture, promptly separately and can not hinder elastomer or spring-like will install halves to be pulled in together action.

For the halves of guaranteeing device can be established an axial guiding element towards laterally firmly being bonded together, a sheath for example, insert in it the reverse end of supplying apparatus halves.Yet the also available different modes of this axial guiding element forms, and for example wherein establishes a latch on half one at device, so that engage with second half set recess.

The main purpose of the present invention's device is to use for carpenter or carpentry, especially the furniture manufacture view.Yet it also can be used for two are engaged with its butt joint flat surface, and with different materials, for example the made member of plastics, stone material or metal.

At present and pin type dowel shared, mainly be in order to the laminate of bonding wooden part in the carpenter shop.Use an actual machine that has milling cutter of all purchasing in the carpenter shop now, just can on two wooden parts, respectively mill and make scalloped recess one, for half and half insertion of oval layers plywood in it.Therefore, in the second embodiment of the present invention, just the halves with device is designed to small-sized plate.Be different from pin type dowel, this measure can be before tackiness agent solidifies, the position of correcting two wooden parts towards the direction of longitudinal fluting.

Now in conjunction with the accompanying drawings embodiments of the invention are elaborated, wherein:

Fig. 1 is the sectional arrangement drawing of first embodiment of the invention;

Fig. 2 is the plan view of second embodiment of the invention; With

Fig. 3 is the sectional drawing that the III-III line along Fig. 2 is intercepted.

As shown in Figure 1, device of the present invention comprises a dowel that is made of two and half ones 1.In the embodiment shown in fig. 1, the structure of this two and half one is identical, therefore has identical code.Have cylinder axial region 2 and head 3 for half and half one 1 respectively.Then be wound with annular barb shape convex parts 4 around each head 3.

The halves 1 of this device is inserted in the hole 5,6 of two wooden together parts 7,8 to be joined.

Barbed protuberances thing 4 has flexible, can be toward retreading with respect to specific channeling direction (arrow 9).Therefore, when being subjected to the pulling force opposite with channeling direction 9, they just can be holded up, and prevent that this half one 1 from pulling out from hole 5,6.

Yet after this device had been inserted within the hole 5,6, this barbed protuberances thing 4 can be holded up a bit unavoidably a little.How much this can shift out the halves 1 of device from hole 5,6, and for example half millimeter, so that between wooden part to be joined 7,8, produce gap 10.

Be to eliminate gap 10, the axial region 2 of halves 1 can move axially for 11 li at sheath, and separates a segment distance a, and applies one by two elastomers 12 and make halves be tending towards power close to each other.Compare with the width in gap 10, bigger apart from a, for example 2 arrive 10mm.

Elastomer 12 is located at the side of axial region 2, is positioned at the corresponding vertically recess 13 of axial region 2, and is fixed in the recess 15 of axial region 2 with the protruding end 14 of its radial inward.Similarly, they also are encapsulated in inside by sheath 11.

Kept by the divider that strip shape element 16 constitutes apart from a.Element 16 is provided with specified point of rupture 17 in the centre.The shape picture of element 16 a flat S shape is in the two ends of this S shape obliquely place the lip-deep corresponding recess 22,23 of two axial regions 2 respectively.

The part 18,19 that is engaged by specified point of rupture 17 on the element 16 can be according to arrow 20,21 respectively towards reverse pulling, so that separate when specified point of rupture 17 ruptures.In the fracture at point of rupture 17 places and the elastomer 12 that separately can make of part 18,19 halves of device is strained mutually, also with wooden part 7,8 tensions, disappeared simultaneously to cause gap 10.

In Fig. 1, the diameter of half and half one 1 head 3 is greater than axial region 2.Yet halves 2 can do whole diameter all identical.In addition, also the diameter of head 3 can be done little than axial region 2.If one of them is to form by this way to halves 1 at least, for instance,, cause this device more easily to make up then because of sheath 11 can push away the head that has convex parts 4.

As substitute mode to specified point of rupture 17, shim 16 also can change into and use a kind of bimetallic element between halves 1, for example a kind of bimetallic strip forms, and this kind bimetallic strip can bend when temperature variation, so that elastomer 12 or similarly spring can be with halves 1 tension together.For changing temperature, can for example use blower to having the corresponding site blowing of this device in the member that will engage.Especially, also two bimetallic strips can be respectively fixed to each other with on the mutual axial region 2 that supports in its end.

Fig. 2 is used to engage two used devices of the present invention of the especially wooden part of member (not shown) with Figure 3 shows that, because it has two and half ones that form differs from one another, so represent half different ones with

code

31 and 32 respectively.

Half one 31,32 belongs to the form of small-sized plate, the tip that respectively has fan shape and amputation or round, and this fan-shaped string portion is toward each other simultaneously.

Outer rim along each

plate

31,32 is provided with groove 33, is inserted in a ring 34 of being made and being strained by rubber or other elastic material in this groove.Ring 34

round plate

31,32 can make this plate be pressed against each other.

As shown in Figure 3, two long limits of each

plate

31,32 are provided with the rib shape convex parts 35 of form as if pricker.The string portion keeping parallelism of the bearing of trend of this rib shape convex parts 35 and fan-shaped plate 31,32.These rib shape convex partss 35 have flexible, and the rib shape convex parts on plate points to another plate obliquely.

Along the direction of double-head arrow 36 indications,

plate

31,32 is inserted in the corresponding recess of two not shown wooden parts of Fig. 2 and Fig. 3 respectively, that is in these two wooden parts, mills in the corresponding scalloped recess of making.At this moment, barb-like rib shape convex parts 35 just is fixed to

plate

31,32 in this groove, engages this plate is followed firmly the wooden part that is inserted.

Elastic band 34 just keeps vertical direction towards the string portion with these two fan-

shaped plates

31,32 along the direction of arrow 36 indications, and

plate

31,32 is applied elastic load.

Yet at Fig. 2 and initial position shown in Figure 3, this

plate

31,32 makes the segment distance a that separates each other by a shim.

For this reason, plate 31 is provided with plate shape convex parts or the lug boss 37 of becoming one with it and extending to another plate 32 places towards arrow 36 directions.In addition, plate 32 is provided with recess or breach 38.Corner position in convex parts 37 both

side edges

39,40, and between the corner position of breach 38 both

side edges

41,42, be respectively equipped with specified point of

rupture

43,44, this specified point of rupture is by crossing over these corner positions and being formed with the thin thin protuberance that

plate

31,32 is interconnected as one.

Lug boss 37 and breach 38 belong to rectangle, and the direction that the

lateral margin

39,40 of this convex parts 37 and the lateral margin of breach 38 41,42 extends is keeping parallelism each other, that is all along the movement direction as the

plate

31,32 of arrow 36 indications.

When

plate

31,32 is placed in the groove in two engagement members respectively, but just tool using, and nail hammer for example knocks one of them the outside of these two members to be joined, specified point of

rupture

43,44 is struck ruin, and causes this specified point of

rupture

43,44 fractures.So elastic band 44 just can make

plate

31,32 be pulled through a segment distance a towards the other side each other along the direction of arrow 36 indications, also allow convex parts 37 and then move in the breach 38.This measure is pressed together two members to be joined, and has eliminated the gap between this member.

When specified point of

rupture

43,44 ruptured, some material also can hang over edge.For avoiding

plate

31,32 when being pulled together, to be stuck because of this material on

edge

39,41 and 40,42, the

edge

39,49 of convex parts 37 is except the corner position, all the

edge

41,42 from breach 38 inwardly slightly is offset, so that form protruding nose 39 ', 40 ', when this device utilizes elastic band 34 to

strain plate

31,32 together, the end that convex parts 37 moves in the breach 38, the gap between

edge

39,41 and 40,42 can hang over the material of edge by ccontaining these.

Plate

31,32 is when the other side moves towards each other, for guiding this

plate

31,32 and fixing their lengthwise position and lateral attitudes when the final state of this device, plate shape convex parts 37 in plate 31 is provided with two

pilot pins

45,46, this pilot pin 31 extends to plate 32 along movement direction 36 from plate, and can join in the

hole

47,48 of plate 32.

It should be noted that this

pilot pin

45,46 can be used to form a kind of specified point of rupture equally, so as knock these two members to be joined one of them the time, just this specified point of rupture can be struck and ruin.These pilot pins can be the unique specified point of rupture of device, or the specified point of rupture that has effectiveness jointly with specified point of

rupture

43,44.

Pilot pin

45 and 46 can with plate 32 in the

hole

47 and 48 places integrated, for instance, integrated position can be at

stomidium

47 and 48 places.

Between

pilot pin

45,46, the plate shape convex parts 37 of plate 31 is provided with recess or the breach 49 that is equipped with locking tooth 50 in its lateral margin.In addition, plate 32 also is provided with plate shape lug boss 51 in the centre of its breach 38, and be provided with locking tooth 52 at each longitudinal edge of this lug boss 51, when convex parts 37 moves in the breach 38, and when

pilot pin

45,46 also moved within the

hole

47,48, this locking tooth 52 just can be as being fastened on as the pricker at that time between two on breach 49 longitudinal edges of device end position locking tooths 50.

Though tooth 50 belongs to rigid design, the tooth 52 on the lug boss 51 has flexible, and therefore when lug boss 51 inserted in the breach 49, this tooth 52 just can be facing to plate 31 toward palintrope.

Simultaneously, when tooth 52 is fastened between two tooths 50, because this tooth 52 is positioned at the recess 54 of the longitudinal edge 53 of lug boss 51, and this recess 54 faces, and edge 55 forms a backstop beyond the plate 31, in case this tooth 52 is past antecurvature facing to plate 31, so tooth 52 can not be past antecurvature facing to plate 31, thereby convex parts 51 can't be pulled out from breach 49 again.

As to the substituting of the lug boss 51 shown in Fig. 2 and Fig. 3, each locks tooth 52 and also can change into and be set in one supported by spring can be on the separate convex of tooth 50 bendings.In this not shown embodiment, the tooth that is located on the described projection all belongs to rigid design equally.

Plate

31,32 has the

lateral margin

57,58 that length essence equates respectively, and the both sides of plate 31 are provided with outward the lug boss 59 towards plate 32 oblique extensions, and plate 32 also gives oblique cutting away at the position 60 of its lateral margin 58 accordingly.

Except elastic band 34, whole device is injection molding parts, and for example one by belonging to the plastic components that this class short fibre of polyamide and so on material and the most handy glass fibre is strengthened.Therefore, available specified point of

rupture

43,44 engages

plate

31,32 and is one.In addition,

pilot pin

45,46 and plate 31 are integrated, and lug boss 51 is integrated with plate 32, and tooth 52 is then integrated with lug boss 51.

When being in end-state, this device size can be with the consistent size of a kind of laminate (lamellaplate).For example, the thickness of this device when end-state can be 2 to 8mm, and length is 30 to 100mm, and width is 20 to 80mm.Then can be for example 3 to arrive 10mm apart from a.

Claims

One kind can be with the device of two member engages, it comprises two half ones that are respectively equipped with the barbed protuberances thing, each half one all can insert in the recess of member, and utilize the barbed protuberances thing that is positioned at its outside to be fixed in this recess, it is characterized in that alleged halves (1; 31,32) insert respectively and extend to recess (5,6) in the alleged member (7,8), and be directed to can be along direction of insertion (9 from butting surface (10); 36) movable and impose elastic load to the other side each other, a divider (16) makes alleged halves (1; 31,32) keep a separately segment distance, it is invalid that this divider (16) becomes after being subjected to extraneous effect.
2. device according to claim 1 is characterized in that, alleged divider (16) is after one of them is knocked at alleged member (7,8), and it is invalid to become.
3. device as claimed in claim 1 or 2 is characterized in that, is provided with the sheath (11) that is used to guide alleged halves (1).
4. as the device as described in one of claim 1 to 3, it is characterized in that, be provided with at least one make alleged halves (1) towards each other the other side impose the elastomer (12) of elastic load.
5. device according to claim 1 is characterized in that, alleged shim (16) is formed by an elongated elements, and the two ends of this shim (22,23) are individually fixed on one of them of alleged half one (1), and has a specified point of rupture (17).
6. as the device as described in the claim 5, it is characterized in that two parts (18,19) of the elongated elements (16) that is engaged by alleged specified point of rupture (17), be tightened up along and direction that two parts (18,19) are separated vertical with alleged direction of insertion (9) maintenance.
7. device as claimed in claim 1 or 2 is characterized in that, is provided with an elastic band (34) that applies elastic load around alleged halves (31,32).
8. as the device as described in the claim 7, it is characterized in that alleged elastic band (34) is located at outside the alleged halves (31,32) in one groove (33) on the side.
9. as the device as described in claim 7 or 8, it is characterized in that, alleged shim is formed by at least one the shim convex parts (37) that is located on one and half ones (31), when alleged specified point of rupture (43, when 44) rupturing, this convex parts moves in the set divider recess of second half one (32) (38), alleged specified point of rupture (43,44) then the position between this convex parts (37) and recess (38).
10. as the device as described in the claim 9, it is characterized in that alleged specified point of rupture (43,44) is formed on alleged convex parts (37) and the integrated place of second half one (32).
11. the device as described in the claim 10 is characterized in that, is moved when entering within the alleged recess (38) at alleged convex parts (37), has a gap between the adjacent wall (41,42) of this convex parts (37) and recess (38).
12. the device as described in the claim 11 is characterized in that alleged halves (31,32) is integrated.
13. the device as described in the claim 12 is characterized in that alleged halves (31,32) is made with injection molding.
14. as the device as described in one of claim 7 to 13, it is characterized in that, alleged one and half ones (32) are provided with a locking projections portion (51), this lug boss is removable to be entered in the set locking recess (49) of second half one (31), this locking recess (49) or locking projections portion (51) are provided with some tooths (50), also be provided with at least one tooth (52) on this locking projections portion (51) or the locking recess (49), after locking projections portion (51) moved within the locking recess (49), the tooth (52) on this locking projections portion (51) or the locking recess (49) can resemble between two tooths (50) that are fastened on as the barb on locking recess (49) or the locking projections portion (51).
15. the device as described in one of claim 7 to 14 is characterized in that alleged halves (31,32) is made of plate, alleged groove in order to ccontaining elastic band (44) (33) then is located at the outer rim of this two plate (31,32).
16. the device as described in the claim 15 is characterized in that alleged plate (31,32) is fan-shaped, the fan-shaped string portion of this two plate (31,32) toward each other.
17. the device as described in the claim 15 is characterized in that, the tip that is shaped as excision of alleged plate (31,32) fan-shaped.
18. as the device as described in one of claim 15 to 17, it is characterized in that, alleged plate (31) has a part (37) as a divider convex parts, the divider recess that alleged another plate (32) is gone up is then formed by a breach (38), lateral margin (39 at this convex portion (37), 40) and between the lateral margin (41,42) of breach (38) respectively be provided with a specified point of rupture (43,44).
19. the device as described in the claim 18 is characterized in that, alleged two specified point of rupture (43,44) are located between the corner position of the corner position of lateral margin (39,40) of alleged convex portion (37) and breach (38).
20. the device as described in claim 18 or 19 is characterized in that, the lateral margin (39,40) of alleged convex portion (37) and the lateral margin (41,42) of breach (38) extend along the movement direction (36) of alleged two plates (31,32).
21. the device as described in one of claim 15 to 20 is characterized in that alleged locking projections portion (51) is located in the breach (38) of alleged plate (32), locking recess (49) then is located on the convex portion (37) of another plate (32).
22. the device as described in one of claim 15 to 21 is characterized in that, for making alleged two plates (31,32) each other towards the other side's guiding, a plate (31) is provided with at least one pilot pin (45,46) therein, it can join in the hole (47,48) of being located on another plate (32).
23. the device as described in the claim 22 is characterized in that, alleged divider is formed by alleged pilot pin (45,46), and alleged specified point of rupture then forms between this pilot pin (45,46) faces the opening in that end in alleged hole (47,48) and this hole (47,48).
24. the device as described in the claim 23 is characterized in that, alleged specified point of rupture is formed on alleged pilot pin (45,46) and the integrated place of another plate (32).