CN202468600U

CN202468600U - Bolt

Info

Publication number: CN202468600U
Application number: CN 201220097009
Authority: CN
Inventors: 毛秧群
Original assignee: YUYAO WUXING COPPER INDUSTRY Co Ltd
Current assignee: YUYAO WUXING COPPER INDUSTRY Co Ltd
Priority date: 2012-03-15
Filing date: 2012-03-15
Publication date: 2012-10-03
Anticipated expiration: 2022-03-15

Abstract

The utility model provides a bolt which comprises a threaded rod and a sleeve, wherein a tapered installing part outwards expanding gradually along the radial direction is arranged on the tail end of the threaded rod, the sleeve is a hollow pipe and is sleeved on the threaded rod, a plurality of clamping parts are arranged on one end of the sleeve in an extending direction along the axial direction, adjacent clamping parts are mutually spaced, the clamping parts can outwards expand and deform along the shape of the installing part when being pressed by the installing part, a concave part is arranged on the surface of the outer side of each clamping part, which is close to the end part of the sleeve, and the deformation generated by one end of the concave part, which is close to the sleeve, due to the expansion can not exceed the surface of the outer side of the sleeve. According to the bolt, the integrity of an installing hole is effectively kept, and the constitutive property of an installation object with a hole cannot be damaged.

Description

Bolt

Technical field

The utility model relates to a kind of bolt, relates in particular to a kind of bolt that improves construction stability.

Background technique

Bolt has been increasing to be applied to interior decoration as hanging instrument, as shown in Figure 1, and existing bolt 1 comprises a threaded stem 10, a sleeve pipe 12 and a threaded pipe 14; The end of this threaded stem 10 is provided with an assembly department 101, and this assembly department 101 is the cone of radially expanding gradually towards away from the direction of this threaded stem 10; This sleeve pipe 12 is a hollow tube, and it is sleeved on this threaded stem 10, and an end of this sleeve pipe 12 is provided with a plurality of engagement portions 120, and these a plurality of engagement portions 120 extend axially along this sleeve pipe 12, and spaced apart; This threaded pipe 14 is a hollow tube, and its inner side surface is provided with the screw thread that matches with threaded stem 10, and its aperture is corresponding with the external diameter of this threaded stem 10.

See also Fig. 2; The workmen is assembled in 10 last times of this threaded stem with this sleeve pipe 12 and this threaded pipe 14 in regular turn; The assembly department 101 of engagement portion 120 contiguous these threaded stems 10 on this sleeve pipe 12, and this threaded pipe 14 is resisted against on the other end of this sleeve pipe 12, at this moment; The workmen can insert the assembly department 101 of this threaded stem 10 in the hole that a stone material 2 (or other) is drilled with in advance; And force this threaded pipe 14 can push this sleeve pipe 12 through hand tools to move towards the direction of the assembly department 101 of this threaded stem 10, make this engagement portion 120 can be along the shape of this assembly department 101 and expansion deformation outwardly, and inlay card be in this hole.

But; In this engagement portion during 120 distortion, the position between this engagement portion 120 and this sleeve pipe 12, can because of dilatating and deformable outwardly against the internal face (like the void circle among Fig. 2) of this hole 20 firmly; If the workmen still rotates this threaded pipe 14 by force; To force this engagement portion 120 to launch distortion fully, then can cause the internal face of this hole 20 to produce situation such as be full of cracks or breakage, influence the use of this bolt 1.In addition; Because the workmen in the process of construction, can't watch the situation in this stone material 2, therefore; The workmen can't learn the degrees of expansion of this engagement portion 120; For fear of causing the installation quality of this bolt 1 bad because of excessively pushing this sleeve pipe 12, the workmen must push this sleeve pipe 12 lentamente, has a strong impact on the efficient of integral construction.

The model utility content

In view of this, be necessary to provide a kind of bolt that can address the above problem.

A kind of bolt, it comprises a threaded stem and a sleeve pipe, the end of this threaded stem is provided with the assembly department of the taper that radially expands outwardly gradually; This sleeve pipe is a hollow tube; Be sleeved on this threaded stem, an end of this sleeve pipe extends vertically and is provided with a plurality of engagement portions, adjacent engagement portion each interval; These a plurality of engagement portions are when the compressing of bearing this assembly department; Can be along the shape of this assembly department expansion deformation outwardly, the outer surface of the end of this sleeve pipe of vicinity of each engagement portion is equipped with a depressed part, has a spacing between the surface of this depressed part and the outer side surface of this sleeve pipe; With in this engagement portion outwardly during expansion deformation, the amount of deformation that an end of contiguous this sleeve pipe of this depressed part produces because of expansion can not surpass the outer surface of this sleeve pipe.

Preferably, the outboard peripheries of contiguous this assembly department of this threaded stem is provided with one first shoulder, is formed with one second shoulder between an end inboard of this engagement portion and this sleeve pipe, and this first shoulder and this second shoulder lean.

Preferably, under the state that this first shoulder and this second shoulder lean, the expansion angle of this engagement portion is maximum.

Preferably, the position of contiguous this second shoulder is provided with a projection in this sleeve pipe.

Compared with prior art; The bolt that the utility model provides is at the outer surface homogeneous depressed part of the end of the contiguous sleeve pipe of each engagement portion, in the process that this bolt is installed, avoids the engagement portion in the process of dilatating and deformable outwardly; The internal face of hole is oppressed the generation of cracks phenomenon because of receiving pushing of this engagement portion; Thus, can keep the integrity of this hole effectively, avoid destroying the structural of the object that is provided with this hole.

Above-mentioned explanation only is the general introduction of the utility model technological scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of specification, and for let the above-mentioned of the utility model with other purpose, feature and advantage can be more obviously understandable, below special act embodiment; And conjunction with figs., specify as follows.

Description of drawings

Fig. 1 is the explosive view of existing bolt.

Fig. 2 is the generalized section of bolt shown in Figure 1.

Fig. 3 is the explosive view of the bolt that provides of the utility model.

Fig. 4 is the generalized section of bolt shown in Figure 3.

Fig. 5 is the plan view of the sleeve pipe of bolt shown in Figure 3.

Embodiment

Be further elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be appreciated that specific embodiment described herein as just embodiment, and be not used in the protection domain that limits the utility model.

See also Fig. 3, the utility model one preferred embodiment provides a kind of bolt 3, and this bolt 3 comprises a threaded stem 31 and a sleeve pipe 33.The outboard peripheries of this threaded stem 31 is provided with screw thread, and the end of this threaded stem 31 is provided with the assembly department 311 of the taper that radially expands outwardly gradually.This sleeve pipe 33 is a hollow tube, and its inner side surface is an even surface, and this sleeve pipe 33 is sleeved on this threaded stem 31; One end of this sleeve pipe 33 extends vertically and is provided with a plurality of engagement portions 331; Adjacent engagement portion 331 each intervals form a slit 333; So that these a plurality of engagement portions 331 are when bearing the compressing of this assembly department 311, can be along the shape of this assembly department 311 expansion deformation outwardly.The outer surface of the end of this sleeve pipe 33 of the vicinity of each engagement portion 331 is equipped with a depressed part 335; Has a spacing between the outer side surface of the surface of this depressed part 335 and this sleeve pipe 33; With in this engagement portion 331 outwardly during dilatating and deformable, the amount of deformation that an end of these depressed part 335 contiguous these sleeve pipes 33 produces because of expansion can not surpass the outer surface of this sleeve pipe 33.

Please consult Fig. 3 and Fig. 4 in the lump, when this bolt 3 was installed, this threaded stem 31 of workmen was drilled with a hole 40 in advance on an object 4 (like stone material), and the stomidium footpath on these hole 40 contiguous these object 4 surfaces is less than the other end aperture.Then, when being placed in this bolt 3 in this hole 40, this sleeve pipe 33 is sleeved on this threaded stem 31, and these a plurality of engagement portions 331 are adjacent to this assembly department 311.Thereafter; The workmen utilizes an advancing means to push this sleeve pipe 33, this sleeve pipe 33 is moved gradually, at this moment to the direction of this assembly department 311; This engagement portion 331 is little by little strutted by this assembly department 311 because of the compressing that receives this assembly department 311; And expansion deformation outwardly, and this a plurality of engagement portion 331 centers on the aperture greater than an end of this hole 40, the aperture that forms, and then makes this engagement portion 331 can be rapidly and be positioned securely in this hole 40.Because the position of an end of contiguous this sleeve pipe 33 in the surface of this depressed part 335 can not surpass the outer surface of this sleeve pipe 33; Therefore; This engagement portion 331 is in the process of dilatating and deformable outwardly, and what the internal face of this hole 40 can't receive this engagement portion 331 pushes compressing and the generation of cracks phenomenon.Therefore, this bolt 3 can keep the integrity of this hole 40 effectively, and this engagement portion 331 also can be smoothly expansion quickly and do not influence workmen's construction convenience, can improve workmen's efficiency of construction effectively.

See also Fig. 3 and Fig. 4, because the workmen can't watch the situation in this object 4, so can't learn the degrees of expansion of this engagement portion 331; Therefore, firmly inlay card is on this object 4 in order to make this bolt 3, and the outboard peripheries of these threaded stem 31 contiguous these assembly departments 311 is provided with one first shoulder 313; Be formed with one second shoulder 337 between the one end inboard of this sleeve pipe 33 and this engagement portion 331; This first shoulder 313 and second shoulder 337 each other against the time, the expansion angle of this engagement portion 331 is maximum, this moment, this sleeve pipe 33 can't be constantly moves towards assembly department 311 directions of this threaded stem 31; Thus; The workmen just can grasp this engagement portion 331 really and whether be expanded to maximum angle, and needn't worry that this sleeve 33 is excessively pushed, and causes this engagement portion 331 to exceed this assembly department 311; And then be pushed through the internal face of this hole 40, destroy the complete structure property of this object 4.Therefore, can improve the user, and can significantly shorten the integral construction time, to increase workmen's efficiency of construction at the steadiness of hanging on the article.In addition, because on the whole present hole 40 on object 4 is to utilize the drilling tool Drilling of standard to form; Therefore; The degree of depth of each hole 40 and shape are all very approximate, thus, and through this first shoulder 313 and this second shoulder 337; This bolt 3 is firmly installed also on the object 4, more can be guaranteed workmen's installation quality.

Please consult Fig. 3 and Fig. 5 in the lump; For conveniently transporting this threaded stem 31 and this sleeve pipe 33; Avoid in handling process, this sleeve pipe 33 comes off on this threaded stem 31, and the position of contiguous this second shoulder 337 is provided with a projection 339 in this sleeve pipe 33; Thus, can this sleeve pipe 33 be combined on this threaded stem 31.In the process of carrying, the screw thread that this projection 339 can receive on this threaded stem 31 stops, and makes this sleeve pipe 33 can't break away from this threaded stem 31, avoids this sleeve pipe 33 to lose.

The above is merely the preferred embodiment of the utility model, not in order to restriction the utility model, interior any modification of doing of all spirit at the utility model and principle, is equal to and replaces and improvement etc., all should be included in the protection domain of the utility model.

Claims

1. bolt, it comprises a threaded stem and a sleeve pipe, the end of this threaded stem is provided with the assembly department of the taper that radially expands outwardly gradually; This sleeve pipe is a hollow tube; Be sleeved on this threaded stem, an end of this sleeve pipe extends vertically and is provided with a plurality of engagement portions, adjacent engagement portion each interval; These a plurality of engagement portions are when the compressing of bearing this assembly department; Can be along the shape of this assembly department expansion deformation outwardly, it is characterized in that: the outer surface of the end of this sleeve pipe of vicinity of each engagement portion is equipped with a depressed part, has a spacing between the surface of this depressed part and the outer side surface of this sleeve pipe; With in this engagement portion outwardly during expansion deformation, the amount of deformation that an end of contiguous this sleeve pipe of this depressed part produces because of expansion can not surpass the outer surface of this sleeve pipe.

2. bolt as claimed in claim 1 is characterized in that, the outboard peripheries of contiguous this assembly department of this threaded stem is provided with one first shoulder, is formed with one second shoulder between an end inboard of this engagement portion and this sleeve pipe, and this first shoulder and this second shoulder lean.

3. bolt as claimed in claim 2 is characterized in that, under the state that this first shoulder and this second shoulder lean, the expansion angle of this engagement portion is maximum.

4. like claim 2 or 3 described bolts, it is characterized in that the position of contiguous this second shoulder is provided with a projection in this sleeve pipe.