CN203265719U - Connecting structure for end shield and integrated guide bearing seat of drill chuck - Google Patents
Connecting structure for end shield and integrated guide bearing seat of drill chuck Download PDFInfo
- Publication number
- CN203265719U CN203265719U CN 201320198185 CN201320198185U CN203265719U CN 203265719 U CN203265719 U CN 203265719U CN 201320198185 CN201320198185 CN 201320198185 CN 201320198185 U CN201320198185 U CN 201320198185U CN 203265719 U CN203265719 U CN 203265719U
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- end shield
- integrated
- guide bearing
- drill chuck
- integrated guide
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Abstract
The utility model belongs to the technical field of machines, and relates to a self-fastening drill chuck, in particular to a connecting structure for an end shield and an integrated guide bearing seat of a drill chuck. The connecting structure solves the technical problem of unreasonable design in the prior art and the like. The connecting structure comprises the integrated guide bearing seat and the end shield, wherein the integrated guide bearing seat is of a tubular shape and the end shield is of a conical tube shape. The upper portion of the integrated guide bearing seat is provided with a cylindrical integrated bearing guide part. The lower portion of the integrated guide bearing seat is provided with a clamping jaw guide rail part of a conical tube shape. The integrated bearing guide part and the clamping jaw guide rail part are of an integrated structure. The periphery of the clamping jaw guide rail part is sleeved with the end shield. The end shield is fixedly connected with the integrated bearing guide part. The connecting structure for the end shield and the integrated guide bearing seat of the drill chuck has the advantages that design is reasonable and the structure is simple and compact; by means of threaded connection, step positioning and interference fit, stable and reliable connection is realized, the reliability of the connection between the end shield and the integrated guide bearing seat is fully guaranteed, the connection does not become loose, and therefore the effect that the self-fastening drill chuck works reliably and smoothly is ensured.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to keyless drill chuck, especially relates to the syndeton of a kind of drill chuck end shield and integrated guide bearing.
Background technology
Development along with social productive forces, the use of drill chuck is very extensive, the bench drill that uses in the industries such as machine-building, electronic apparatus, construction and installation, house decoration, electric hand drill or lathe etc. mechanically all can need to carry out work with instruments such as drill chuck clamping drilling bit or cutters.Existing drill chuck has two types usually: a kind of is spanner-type drill chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and need aid when clamping and loose unloading drill bit, tighten or unclamp drill chuck and come installation or removal drill bit or cutter with aid, operate cumbersomely, waste time and energy; Another kind is self-tightening drill chuck.Self-tightening drill chuck utilizes the rotation after drill bit is installed by the principle of self-tightening, automatically tightens drill bit or cutter by screw thread, is easy to when the instruments such as clamping drill bit or cutter.
Conventional keyless drill chuck generally includes main body, lock-screw, jaw, ball, end shield, jaw seat, end cap and ball lid.Main body is loaded in the pilot sleeve that is stitched together by ball lid and jaw seat, and this pilot sleeve is to be stitched together by the thread connection that end shield and ball cover.The head of jaw seat has three guide grooves, and jaw all is housed in guide groove.
In prior art, the connective stability of end shield and jaw seat is relatively poor, and mechanical strength is not high, and easily generation is loosening in the course of the work, thereby affects the normal operation of keyless drill chuck.End shield is to cover thread connection with ball again outside being enclosed within the jaw seat, thus jaw seat and ball lid is stitched together, in case end shield and the disengaging of ball lid occur, will cause each parts of whole keyless drill chuck to be scattered.
Summary of the invention
The purpose of this utility model is for the problems referred to above, provides a kind of reasonable in design, simple and compact for structure, the drill chuck end shield that bonding strength is high and the syndeton of integrated guide bearing.
For achieving the above object, the utility model has adopted following technical proposal: the syndeton of this drill chuck end shield and integrated guide bearing, it is characterized in that, this syndeton comprises tubular integrated guide bearing and is the end shield of taper barrel, the top of described integrated guide bearing is that cylindrical circular monoblock type is held the section of leading, the bottom is the jaw rail portion that is taper barrel, and monoblock type is held the section of leading and the jaw rail portion is the integral type structure, and described end shield is placed in jaw rail portion periphery and holds with monoblock type the section of leading and is fixedly connected with.
In the syndeton of above-mentioned drill chuck end shield and integrated guide bearing, described monoblock type is held positioning step and the external thread section that the section of leading is provided with ring-shaped step and is positioned at the ring-shaped step below, described end shield is provided with internal thread segment and is positioned at the socket part of internal thread segment top, described external thread section and internal thread segment are threaded, described socket part end face is resisted against on ring-shaped step, and socket part inwall and positioning step side tight fit.That is, end shield and integrated guide bearing be first through thread connection, then by socket part inwall and positioning step tight fit, thereby realizing that end shield is forced is embedded on the integrated guide bearing.
In the syndeton of above-mentioned drill chuck end shield and integrated guide bearing, described jaw rail portion has some the guide grooves that are obliquely installed, be respectively equipped with the jaw that can move along guide groove in each guide groove, the lower inner wall of described end shield is provided with the jaw guide surface that is the conical surface.
In the syndeton of above-mentioned drill chuck end shield and integrated guide bearing, the quantity of described guide groove is three and the evenly distribution in a circumferential direction of each guide groove.
In the syndeton of above-mentioned drill chuck end shield and integrated guide bearing, described end shield is arranged with axially extended some convex tendons outward, and described convex tendon evenly distributes in a circumferential direction.
Compared with prior art, the advantage of the syndeton of this drill chuck end shield and integrated guide bearing is: reasonable in design, simple and compact for structure, utilization is threaded, step is located and tight fit, realize reliable and stable connection, fully guarantee the reliability that end shield is connected with the integrated guide bearing, can not occur connecting and become flexible, the assurance keyless drill chuck is reliably worked swimmingly.
Description of drawings
Fig. 1 is that the application state that the utility model provides partly cuts open structural representation.
Fig. 2 is that structural representation is partly cutd open in the amplification that the utility model provides.
In figure, integrated guide bearing 1, end shield 2, monoblock type are held the section of leading 3, jaw rail portion 4, ring-shaped step 5, external thread section 6, internal thread segment 7, socket part 8, guide groove 9, jaw 10, jaw guide surface 11, main body 12, lock-screw 13, axle bed 14, ball 15, elastic cover 16, convex tendon 17, positioning step 18.
The specific embodiment
As shown in Figure 1, keyless drill chuck comprises the parts such as main body 12, lock-screw 13, jaw 10, integrated guide bearing 1, end shield 2, axle bed 14, ball 15, elastic cover 16.As shown in Figure 2, the syndeton of this drill chuck end shield and integrated guide bearing comprises tubular integrated guide bearing 1 and the end shield 2 that is taper barrel.The top of integrated guide bearing 1 is that cylindrical circular monoblock type is held the section of leading 3, the bottom is the jaw rail portion 4 that is taper barrel, and monoblock type is held the section of leading 3 and jaw rail portion 4 is the integral type structure, and described end shield 2 is placed in jaw rail portion 4 peripheries and holds the section of leading 3 with monoblock type and is fixedly connected with.
More particularly, monoblock type is held the positioning step 18 and external thread section 6 that the section of leading 3 is provided with ring-shaped step 5 and is positioned at ring-shaped step 5 belows, described end shield 2 is provided with internal thread segment 7 and is positioned at the socket part 8 of internal thread segment 7 tops, described external thread section 6 and internal thread segment 7 are threaded, described socket part 8 end faces are resisted against on ring-shaped step 5, and socket part 8 inwalls and positioning step 18 side tight fits.That is, end shield 2 is first through thread connection with integrated guide bearing 1, then by socket part 8 inwalls and positioning step 18 tight fits, finally end shield 2 is forced is embedded on integrated guide bearing 1.
The utility model adopts and is threaded, step is located and tight fit, realizes reliable and stable connection, fully guarantees the reliability that end shield 2 is connected with integrated guide bearing 1, can not occur connecting becoming flexible, and the assurance keyless drill chuck is reliably worked swimmingly.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used integrated guide bearing 1, end shield 2, monoblock type to hold the terms such as the section of leading 3, jaw rail portion 4, ring-shaped step 5, external thread section 6, internal thread segment 7, socket part 8, guide groove 9, jaw 10, jaw guide surface 11, main body 12, lock-screw 13, axle bed 14, ball 15, elastic cover 16, convex tendon 17, positioning step 18, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. the syndeton of a drill chuck end shield and integrated guide bearing, it is characterized in that, this syndeton comprises tubular integrated guide bearing (1) and is the end shield (2) of taper barrel, the top of described integrated guide bearing (1) is that cylindrical circular monoblock type is held the section of leading (3), the bottom is the jaw rail portion (4) that is taper barrel, and monoblock type is held the section of leading (3) and jaw rail portion (4) is the integral type structure, and described end shield (2) is placed in jaw rail portion (4) periphery and holds the section of leading (3) with monoblock type and is fixedly connected with.
2. the syndeton of drill chuck end shield according to claim 1 and integrated guide bearing, it is characterized in that, described monoblock type is held the positioning step (18) and external thread section (6) that the section of leading (3) is provided with ring-shaped step (5) and is positioned at ring-shaped step (5) below, described end shield (2) is provided with internal thread segment (7) and is positioned at the socket part (8) of internal thread segment (7) top, described external thread section (6) and internal thread segment (7) are threaded, described socket part (8) end face is resisted against on ring-shaped step (5), and socket part (8) inwall and positioning step (18) side tight fit.
3. the syndeton of drill chuck end shield according to claim 1 and 2 and integrated guide bearing, it is characterized in that, described jaw rail portion (4) has some the guide grooves that are obliquely installed (9), being respectively equipped with in each guide groove (9) can be along the mobile jaw (10) of guide groove (9), and the lower inner wall of described end shield (2) is provided with the jaw guide surface (11) that is the conical surface.
4. the syndeton of drill chuck end shield according to claim 3 and integrated guide bearing, is characterized in that, the quantity of described guide groove (9) is three and each guide groove (9) evenly distribution in a circumferential direction.
5. the syndeton of drill chuck end shield according to claim 3 and integrated guide bearing, is characterized in that, the outer axially extended some convex tendons (17) that are arranged with of described end shield (2), and described convex tendon (17) evenly distributes in a circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198185 CN203265719U (en) | 2013-04-18 | 2013-04-18 | Connecting structure for end shield and integrated guide bearing seat of drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198185 CN203265719U (en) | 2013-04-18 | 2013-04-18 | Connecting structure for end shield and integrated guide bearing seat of drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265719U true CN203265719U (en) | 2013-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320198185 Expired - Fee Related CN203265719U (en) | 2013-04-18 | 2013-04-18 | Connecting structure for end shield and integrated guide bearing seat of drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203265719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
-
2013
- 2013-04-18 CN CN 201320198185 patent/CN203265719U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170418 |