CN201043006Y

CN201043006Y - Crank jointing apparatus

Info

Publication number: CN201043006Y
Application number: CNU2006200472253U
Authority: CN
Inventors: 温宜玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2008-04-02
Anticipated expiration: 2016-10-27

Abstract

The utility model discloses a crank combining device, which includes that a covering drawing hole, the size and the shape thereof match the combination end wherein a crank and a crank mandrel are combined, the covering drawing hole is provided with a via trench which is close to the covering drawing hole and passes crossly through the crank, and the middle part thereof is communicated with the covering drawing hole, and two tightening blocks linked by tightening screws are provided inside the via trench in a sliding mode. When the combination end of the crank mandrel passes through the covering drawing hole, the two tightening blocks are driven to move face to face by means of the tightening screws and directly lean closely against the combination end of the crank mandrel, and the crank is effectively clamped fixedly on the combination end of the crank mandrel in an almost-complete tightening mode, which attributes the safe and reliable assembly combination efficiency to the crank.

Description

The crank combining device

Technical field

The utility model is a kind of crank (Crank) structure that applies to bicycle or sports equipment, refers to a kind of easy novel crank combining device that firmly combines with the crank axle of crank that can allow especially.

Background technology

Sports equipments such as bicycle now, perambulator and body-building vehicle generally all can be provided with the crank structure, use that the user can be driven in the mode of trampling.Relevant for the structure that is fitted to each other of existing crank and crank axle, can number No. 346089 " assembled configuration of bicycle crank " and the Taiwan patent announcement is numbered patent cases such as " unitized constructions of bicycle pedal crank and pedal spindle " No. 545447 referring to the Taiwan patent announcement.

See also shown in No. 545447 patent case of Announcement Number, for cooperating the crank axle to be the binding end of square column form, existing crank is provided with without exception the cover of the c-shaped shape hole of pulling in binding end, utilize cover to pull after borehole jack is located at the binding end of crank axle, the C shape cover hole of pulling is tightened by opening with fixing spiral shell spare, used allowing crank be incorporated into the binding end of crank axle with the clamping kenel.

Existing crank combined structure, though can reach the usefulness that crank is combined with the crank axle, yet no matter adopt welding, mode such as milling or crowded type, will in crank to be processed to form the C shape cover all cooresponding trouble in hole of pulling in conjunction with the end inconvenient, the cost height, and seeing through fixing spiral shell spare overlaps the bore deformation of pulling with C shape and tightens and press from both sides engagement means under the pressure of the crank axle, not only fixedly the operation of the screw lock of spiral shell spare is very wasted time and energy, and crank is quite limited under the pressure of effective clamping strength of crank axle with pull hole folder of cover, be difficult to provide crank to obtain the solid and reliable effect that is assembled, therefore the necessity that more existing crank combined structure is further improved obviously arranged.

Summary of the invention

For solve existing crank combined structure existing relevant for make the inconvenience of moulding trouble, cost is high, assembling is wasted time and energy and in conjunction with hypodynamic shortcoming and restriction, creator's development and Design goes out a kind of easy novel crank combining device that firmly combines with the crank axle of crank that can allow.

The utility model main purpose is to provide a kind of crank combining device, it mainly is that binding end in crank forms a specification shape and the cover that crank axle binding end is complementary hole and position, a stage casing and the cover groove of wearing that the hole communicates of pulling of pulling, and is provided with two clamp holders by the tighten spiro piece interlock in wearing groove; So, when the cover that is arranged in crank when the binding end of crank axle is pulled the hole, utilizing tighten spiro piece to drive two clamp holders moves in opposite directions and directly pushes against in the binding end of crank axle with packing face, can allow crank firmly combine with the crank axle, solve the existing existing problem of crank combined structure, the significantly practicality of lift crank and economic benefit effectively.

Based on aforementioned purpose, the technological means that the utility model used is to be to provide a kind of crank combining device, include a crank, this crank is provided with one in an end and overlaps the hole of pulling, laterally provide position, a stage casing and overlap the groove of wearing that the hole of pulling communicates in abutting the pull position in hole of cover, be provided with two clamp holders in wearing groove inside with form slidably, be respectively equipped with one corresponding to the cover packing face of hole internal face pattern of pulling in the forward surface of two clamp holders, and be provided with a tighten spiro piece and wear and be linked to two clamp holders and can drive two clamp holders and move in opposite directions or recess.

Preferable, the cover of the described crank hole of pulling is the square column slotted eye form that is made as, and the cover hole of pulling is to be connected with the described groove of wearing with angle position, and this wears groove is to be made as the slotted eye form of flat column and to be positioned to overlap the side of hole towards crank central authorities of pulling.

Preferable, the position, axle center of described two clamp holders is respectively equipped with a perforation and a screw that is the counter sink form, and described tighten spiro piece is to pass perforation and be screwed together in screw.

Preferable, the position, axle center of described two clamp holders is the screws that are respectively equipped with the different hand of spirals of a tool, the both ends of described tighten spiro piece are provided with the outside thread of the different hand of spirals of tool respectively accordingly.

Preferable, described crank combining device comprises a crank axle, be form respectively for straight oblique crank Z cylindricality attitude and in two ends one with the described crank cover square column type binding end that the hole is complementary of pulling.

Preferable, described crank axle is provided with an interlocking screw in the position, axle center at two ends, and be provided with one fixedly spiral shell spare be incorporated into this interlocking screw and be resisted against described crank.

Novel crank combining device provided by the utility model, advantage that can obtain and effect enhancement comprise at least:

1, the utility model utilizes the packing of two clamp holders, the collocation crank compels to use instead in the cover support that the corresponding internal face in hole forms of pulling, allow crank to be clamped on the binding end of crank axle near comprehensive packing form effectively, allow crank obtain the solid and reliable usefulness that is fitted to each other.

2, as long as the utility model is the start tighten spiro piece, can drive two clamp holders directly in opposite directions feeding packing crank axle or pine move back, manipulate very easy to be laborsaving, dark tool practicality.

3, the utility model directly is provided with the groove of wearing that the hole of pulling is overlapped in a connection in crank, arrange in pairs or groups two clamp holders and tighten spiro piece, formation can be organized and the combining device that is incorporated into crank axle binding end can be firmly clamped, the design of single-piece structure is considerably simplified, and it is easy to make machine-shaping, can effectively improve work efficiency and cost-cutting.

4, composition of the present utility model structure is simplified and dark tool clever thought, can allow the position that is fitted to each other of crank and crank axle present and simplify smooth aesthetic look effectively.

The accompanying drawing summary

Fig. 1 is the composition component decomposition map of the utility model first preferred embodiment.

Fig. 2 is the combination section of the utility model first preferred embodiment.

Fig. 3 is the three-dimensional structure diagram of the utility model first preferred embodiment.

Fig. 4 is the composition component decomposition map of the utility model second preferred embodiment.

Fig. 5 is the combination section of the utility model second preferred embodiment.

The specific embodiment

First preferred embodiment of crank combining device provided by the utility model is as Figure 1-3, crank axle 10 wherein is to be the straight oblique crank Z post structure of round bar form for the position, stage casing, form a binding end 11 respectively in the two ends of crank axle 10, binding end 11 is to be made as the square column form, and inwardly form by position, end face axle center in the two ends of crank axle 10 and to be provided with an interlocking screw 12, can be for fixedly spiral shell spare 13 screw lock combinations.

Shown in Fig. 1-2, crank 20 of the present utility model is for constructing with the integrated roofbolt of modes such as die casting or aluminium extruded type, provide respectively in the two ends of crank 20 and to form one for the cover of crank axle 10 combinations pull a hole 21 and a slotting knot hole 22 for the pedal combination, the pull specification shape in hole 21 of this cover is that binding end 21 with crank axle 10 is complementary, the cover hole 21 of pulling is to cooperate the binding end 11 of square column form and be made as square column slotted eye form, this crank 20 in abut cover pull the position in hole 21 laterally provide position, a stage casing with overlap that the hole 21 of pulling communicates wear groove 23, wear groove 23 and be to be made as the slotted eye form of flat column and to be positioned at cover and pull hole 21 towards a side of crank 20 central authorities, and cover pull hole 21 be with angle position with wear groove 23 and be connected;

Be provided with two

clamp holder

24A, 24B in aforesaid groove 23 inside of wearing with kenel slidably, be respectively equipped with a perforation 241 and a screw 242 that is the counter sink form in the position, axle center of two

clamp holder

24A, 24B, and corresponding to cover the communicate internal face pattern at position of hole 21 of pulling, forward surface in two

clamp holder

24A, 24B is respectively equipped with a packing face 243, pass the perforation 241 of the first clamp holder 24A with a tighten spiro piece 25 again and be screwed together in the screw 242 of the second clamp holder 24B, promptly can utilize tighten spiro piece 25 drive two

clamp holder

24A, 24B in opposite directions feeding move or recess.

See also shown in Fig. 1-3, when the binding end 11 of crank axle 10 aligns the cover that is arranged in crank 20 when pulling hole 21, utilize tighten spiro piece 25 to drive two

clamp holder

24A, 24B feeding in opposite directions moves, and directly push against binding end 11 in crank axle 10 with packing face 243, the engage sleeves support that hole 21 forms binding end 11 in corresponding internal face of pulling is compeled to use instead, allow crank 20 to be clamped on the binding end 11 of crank axle 10 near comprehensive packing form effectively, last align the interlocking screw 12 that is incorporated into crank axle 10 with fixing spiral shell spare 13 again and against the cover of capping crank 20 hole 21 of pulling, not only can allow crank 20 obtain the solid and reliable usefulness that is fitted to each other, as shown in Figure 3, and can allow the position that is fitted to each other of crank 20 and crank axle 10 present and simplify smooth aesthetic look.

See also the utility model second preferred embodiment shown in Fig. 4-5, the difference of this embodiment and aforementioned first preferred embodiment only is two

clamp holder

24A, 24B and tighten spiro piece 25, in the present embodiment, in two clamp holder 24A, the position, axle center of 24B is the screw 242 that is respectively equipped with the different hand of spirals of a tool, and be provided with the outside thread of the different hand of spirals of tool accordingly respectively in the both ends of tighten spiro piece 25, so, as long as start tighten spiro piece 25, can drive two

clamp holder

24A, 24B feeding in opposite directions moves or recesses, and the various practical usefulness that is same as aforementioned first preferred embodiment is provided effectively.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical characterictic that the utility model is carried, utilize technology contents that the utility model discloses to do the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present utility model, all still belong in the scope of the utility model technical characterictic.

Claims

1. crank combining device, it is characterized in that: include a crank, this crank is provided with one in an end and overlaps the hole of pulling, laterally provide position, a stage casing and overlap the groove of wearing that the hole of pulling communicates in abutting the pull position in hole of cover, be provided with two clamp holders in wearing groove inside with form slidably, be respectively equipped with one corresponding to the cover packing face of hole internal face pattern of pulling in the forward surface of two clamp holders, and be provided with a tighten spiro piece and wear and be linked to two clamp holders and can drive two clamp holders and move in opposite directions or recess.

2. crank combining device as claimed in claim 1, it is characterized in that: the cover of the described crank hole of pulling is to be made as square column slotted eye form, and overlapping the hole of pulling is to be connected with the described groove of wearing with angle position, and this wears groove is to be made as the slotted eye form of flat column and to be positioned to overlap the side of hole towards crank central authorities of pulling.

3. crank combining device as claimed in claim 1 or 2 is characterized in that: the position, axle center of described two clamp holders is respectively equipped with a perforation and a screw that is the counter sink form, and described tighten spiro piece is to pass perforation and be screwed together in screw.

4. crank combining device as claimed in claim 1 or 2, it is characterized in that: the position, axle center of described two clamp holders is the screws that are respectively equipped with the different hand of spirals of a tool, and the both ends of described tighten spiro piece are provided with the outside thread of the different hand of spirals of tool respectively accordingly.

5. crank combining device as claimed in claim 2 is characterized in that: described crank combining device comprises a crank axle, be form respectively for straight oblique crank Z cylindricality attitude and in two ends one with the described crank cover square column type binding end that the hole is complementary of pulling.

6. crank combining device as claimed in claim 5 is characterized in that: described crank axle is provided with an interlocking screw in the position, axle center at two ends, and be provided with one fixedly spiral shell spare be incorporated into this interlocking screw and be resisted against described crank.