CN219027167U

CN219027167U - Adapter joint

Info

Publication number: CN219027167U
Application number: CN202320291275.XU
Authority: CN
Inventors: 陈松年; 杨旸
Original assignee: Changzhou Toolon Electric Works Co ltd
Current assignee: Changzhou Toolon Electric Works Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-05-16
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses an adapter, and belongs to the field of cutter adapters. Comprising a body part with an annular structure, wherein the body part is detachably sleeved on the outer end surface of the torque output assembly or the torque output assembly attachment piece; a first connecting key for connecting with a cutter or a cutter attachment is arranged on one side of the body part; a second connecting key used for being connected with the torque output assembly is arranged on the other side of the body part; at least two limit bulges are arranged on the circumferential direction of the inner surface of the body part, and the limit bulges are embedded in clamping grooves on the circumferential direction of the torque output assembly or the attachment piece of the torque output assembly. The utility model designs the adapter based on the existing torque output assembly, so that the cutter and the torque output assembly can be connected in a cross-type manner, the compatibility between the cutter and the torque output assembly is improved, the assembly difficulty and the product cost of the cutter are reduced, and the application range of the angle grinder with the quick-change system is improved.

Description

Adapter joint

Technical Field

The utility model belongs to the field of cutter adapters, and particularly relates to an adapter.

Background

The angle grinder is a hand-held sand grinding electric tool, and is mainly used for grinding metal parts and cutting thin-wall pipes and other sectional materials. The traditional angle grinder needs to remove the cutter fixing part through the tool when changing the cutter, then can change the cutter, and the action is very loaded down with trivial details, has also partly on the market now also designed an angle grinder with quick change system, need not through the instrument with the help of other, realizes cutter quick replacement. Such as CN109641344a filed by the company's prior application CN218363910U, leber & bosch limited.

However, because the cutters belong to worn products and need to be replaced periodically, various cutters with different specifications exist on the market, and the rotating output assemblies of the angle grinders produced by different manufacturers are not matched with the cutters, so that the angle grinders with the quick-change system cannot be well applied.

Disclosure of Invention

In order to overcome the above technical drawbacks, the present utility model provides an adapter for solving the problems related to the background art.

The utility model provides an adapter, which comprises a body part with an annular structure, wherein the body part is sleeved on the outer end surface of a torque output assembly or a torque output assembly attachment piece in a releasable manner; a first connecting key for connecting with the cutter or the cutter attachment is arranged on one side of the body part, and the first connecting key is completely or partially embedded in a notch of the cutter or the cutter attachment device; the other side of the body part is provided with a second connecting key used for being connected with the torque output assembly, and the second connecting key is completely or partially embedded in a positioning hole of the torque output assembly; at least two limit bulges are arranged on the circumferential direction of the inner surface of the body part, and the limit bulges are embedded in clamping grooves on the circumferential direction of the torque output assembly or the attachment piece of the torque output assembly.

Preferably or alternatively, at least one clamping wing which is at least partially delimited along the radial direction of the central axis of the slot is arranged in the circumferential direction of the slot;

the number of the first connecting keys is the same as that of the clamping wings, and the outer contours of the first connecting keys are matched with the inner contours of the clamping wings and are embedded in the clamping wings in a releasable mode.

Preferably or alternatively, at least four clamping wings which are at least partially limited along the radial direction of the central axis of the notch are arranged on the circumference of the notch;

the number of the first connecting keys is half of the number of the clamping wings, and the outer contours of the first connecting keys are matched with the inner contours of two adjacent clamping wings and the notch part between the two clamping wings and are embedded in the two adjacent clamping wings in a releasable mode.

Preferably or alternatively, a first through hole is formed in the interior of the first connection key, body portion formed combination allowing the torque output assembly attachment to pass through.

Preferably or alternatively, the torque output assembly is provided with a second through hole in its centre for mounting a torque output assembly attachment for a stationary tool and/or adapter.

Preferably or alternatively, the torque output assembly attachment comprises: two bosses which are arranged on the end face of one end far away from the output shaft and are close to the two long sides of the second through hole respectively, two accommodating spaces which are formed on the outer edges of the bosses, and two elastic pieces which are arranged in the two accommodating spaces respectively;

the outer surface of each elastic piece is provided with a clamping groove matched with the limiting protrusion.

Preferably or alternatively, the opposite faces of the combination of the two bosses and the elastic member are cambered and are located on the same cylindrical surface.

Preferably or alternatively, the first connecting key forms a groove at the bottom of the body, and the inner contour of the groove at the bottom of the body is matched with the outer contour of the boss, so that the bottom of the first connecting key can be embedded on the boss.

Preferably or optionally, a plurality of positioning holes are formed in the connecting end face of the torque output assembly;

the number of the second connecting keys is equal to or less than that of the positioning holes, and the second connecting keys are embedded in the positioning holes in a releasable manner.

Preferably or optionally, the bottom of the body part is further provided with an arc-shaped reinforcing rib, and a positioning groove capable of accommodating the reinforcing rib is formed in the connecting end face of the torque output assembly.

The utility model relates to an adapter, which has the following beneficial effects compared with the prior art: the utility model designs the adapter based on the existing torque output assembly, so that the cutter and the torque output assembly can be connected in a cross-type manner, the compatibility between the cutter and the torque output assembly is improved, the assembly difficulty and the product cost of the cutter are reduced, and the application range of the angle grinder with the quick-change system is improved.

Drawings

Fig. 1 is a schematic view of the structure of the adapter according to the present utility model from one perspective.

Fig. 2 is a schematic view of another view of the adapter of the present utility model.

Fig. 3 is a schematic view of the structure of the tool according to the present utility model.

FIG. 4 is a schematic diagram of a torque output assembly according to the present utility model.

FIG. 5 is a schematic cross-sectional view of a torque output assembly attachment of the present utility model.

Fig. 6 is a schematic view of the structure of the tool and adapter of the present utility model mounted on the torque output assembly.

FIG. 7 is a schematic cross-sectional view of the tool, adapter of the present utility model mounted to a torque output assembly.

The reference numerals are:

100. a torque output assembly; 110. a torque output assembly attachment; 111. a boss; 112. an accommodation space; 113. an elastic member; 114. a clamping groove; 115. clamping blocks; 120. positioning holes; 130. a positioning groove; 140. a second through hole;

200. an adapter; 210. a body portion; 220. a first connection key; 230. a second connection key; 240. a limit protrusion; 250. a first through hole; 260. reinforcing ribs;

300. a cutter; 310. a tool attachment; 320. a notch; 321. clamping wings.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

Referring to fig. 1-2, an adapter 200 includes: a body portion 210 having an annular structure, the body portion 210 being releasably fitted over an outer end face of the torque output assembly 100 or the torque output assembly attachment 110; a first connection key 220 for connecting with the cutter 300 or the cutter attachment 310 is provided at one side of the body part 210, and the first connection key 220 is completely or partially fitted into a notch 320 of the cutter 300 or the cutter 300 attachment device; the other side of the body 210 is provided with a second connection key 230 for connecting with the torque output assembly 100, and the second connection key 230 is completely or partially embedded in the positioning hole 120 of the torque output assembly 100; at least two limit protrusions 240 are provided on the inner surface of the body 210 in the circumferential direction, and the limit protrusions 240 are engaged with the torque output assembly 100 or the clamping groove 114 on the circumferential direction of the attachment of the torque output assembly 100.

It should be appreciated that the torque output assembly 100 is an electric drive motor with high-speed rotation and the necessary transmission and at least one output shaft, but other constructions are also known, such as a rotary power tool operated by means of an internal combustion engine, operated hydraulically or pneumatically; the torque output assembly attachment 110 is part of the torque output assembly 100 or an accessory device that rotates synchronously with the torque output assembly 100 so as to ensure that the torque output assembly 100 has a certain compatibility; such as a connecting key, a sealing ring, and a fixing means for fixing the tool 300. The cutter 300 is disposed indirectly or directly on the output shaft of the torque output assembly 100, both fixedly held and loaded with the output torque of the torque output assembly 100, such as angle grinder plates, drill bits, cutting plates, and the like. The tool attachment 310 may be part of the tool 300 or an accessory device that rotates synchronously with the tool 300 so that a certain compatibility of the tool 300 is ensured.

For convenience of description, the first and

second connection keys

220 and 230 refer to connection protrusions in the present embodiment. However, this does not mean that the first and

second connection keys

220 and 230 can be only connection protrusions, and it will be understood by those skilled in the art that the first and

second connection keys

220 and 230 can also be connection grooves when the connection portion of the tool 300 or tool 300 attachment means is a protrusion and the torque output assembly 100 is a positioning protrusion.

In order to facilitate understanding of the technical solution of the adapter 200, a brief description will be made of the working principle thereof: referring to fig. 6 to 7, the body 210 is detachably sleeved on the outer end surface of the torque output assembly 100 or the torque output assembly attachment 110, so that the second connection key 230 is ensured to be embedded in the positioning hole 120 of the torque output assembly 100, and the positioning of the adapter 200 and the torque output assembly 100 is realized; in addition, when the limit protrusion 240 is engaged in the torque output assembly 100 or the clamping groove 114 in the circumferential direction of the attachment of the torque output assembly 100, the adapter 200 is fixed to the torque output assembly 100; finally, the tool 300 or the notch 320 of the tool 300 attachment device is fitted and mounted on the first connector, and finally, the tool 300 and the adapter 200 are fixedly mounted on the torque output assembly 100 by the fixing device in the torque output assembly attachment 110.

The present application is further explained below in connection with the construction of an angle grinder and another common model of angle grinder available on the market by the present company.

Referring to fig. 3, a notch 320 is provided in the tool 300 or the tool 300 attachment device, at least one clamping wing 321 at least partially defined along the radial direction of the central axis of the notch 320 is provided in the circumference of the notch 320, and the specific structure of the tool 300 is disclosed in the related patent, and publication No. CN109641363a.

In compliance with this, the present application presents at least three solutions to the structure of the first connection key 220.

In one aspect, the number of the first connection keys 220 is the same as the number of the clamping wings 321, and the external profile of the first connection keys 220 is adapted to the internal profile of the clamping wings 321 and is releasably engaged with the clamping wings 321.

As a modification of the first aspect, referring to fig. 1, the number of the first connection keys 220 is half of the number of the clamping wings 321, and the external profile of the first connection key 220 is adapted to the internal profile of the two adjacent clamping wings 321 and the notch 320 therebetween, and is releasably engaged in the two adjacent clamping wings 321. By the arrangement, the processing difficulty of the adapter 200 can be reduced, and the structural strength of the adapter 200 can be greatly improved.

In the third aspect, the second aspect may be further improved, and the adjacent at least three clamping wings 321 are designed as a whole, and the first connection key 220 adapted thereto is designed.

It should be noted that, in all the above three solutions, it is necessary to ensure that the first connection key 220 and the body portion 210 form a first through hole 250 inside the assembly, so as to allow the torque output assembly attachment 110 to pass through. The torque output assembly attachment 110 herein mainly refers to a torque output assembly attachment 110 for fixing the tool 300 and/or the adapter 200 in the torque output assembly 100, and thus, a second through hole 140 is provided in the center of the torque output assembly 100 for mounting the tool 300 and/or the adapter 200; in this embodiment, the securing means is a clamp block 115 that extends outwardly to the upper portion of the tool 300 or tool attachment 310 and ensures that the tool 300 and/or adapter 200 is secured and loaded with the output torque of the torque output assembly 100.

Referring to fig. 4, a plurality of positioning holes 120 are formed on the connecting end surface of the torque output assembly 100; in the schematic view shown in fig. 2, the positioning holes 120 are provided in eight numbers, uniformly distributed around the center of the end face of the torque output assembly 100 at the end remote from the output shaft. Similarly, since the torque output assembly 100 is known in the art, the specific structure can be found in the related patent application of this company, the publication number CN 2022229799811 of patent application 1 and the publication number CN218363910U of patent application 2.

Additionally, referring to fig. 5, the torque output assembly attachment 110 further includes: two bosses 111 provided on an end surface of one end far from the output shaft at positions close to two long sides of the second through hole 140, two receiving spaces 112 formed on outer edges of the bosses 111, and two elastic members 113 provided in the two receiving spaces 112, respectively; wherein, two elastic members 113 are a part of the sealing ring, and the elastic members 113 can also play a role of sealing. The opposite surfaces of the combination formed by the two bosses 111 and the elastic pieces 113 are cambered surfaces and are positioned on the same cylindrical surface, and the outer surface of each elastic piece 113 is provided with a clamping groove 114 matched with the limiting protrusion 240. The adapter 200 is fixed on the torque output assembly 100, and because the elastic member 113 has a certain deformation, when an operator applies a certain force to the adapter 200, the limiting protrusion 240 can slide out from the clamping groove 114, so as to separate the adapter from the torque output assembly 100. Of course, the slot 114 may be provided on the outer surface of the boss 111, but it is necessary to ensure that the adapter and the torque output assembly 100 disengage under the proper force.

Correspondingly, the first connecting key 220 may be designed as a connecting key protruding to one side, so that a groove is formed in the bottom of the body portion 210 by the first connecting key 220, and the inner contour of the groove is matched with the outer contour of the boss 111, so that the bottom of the first connecting key 220 may be embedded on the boss 111, and at this time, the first through hole 250 coincides with the second through hole 140, so as to position the cutter 300 and the adaptor 200.

The number of the second connection keys 230 is equal to or less than the number of the positioning holes 120, and the second connection keys 230 are releasably engaged in the positioning holes 120, so that the torque output assembly 100 can output torque uniformly and more stably and reliably.

In addition, referring to fig. 2, in view of the structural strength of the adapter 200, an arc-shaped reinforcing rib 260 is further disposed at the bottom of the body 210, the reinforcing rib 260 is located in a blank area between the grooves formed by the first connecting piece, and a positioning groove 130 capable of accommodating the reinforcing rib 260 may be correspondingly disposed on the connecting end surface of the torque output assembly 100. For the adapter 200, the reinforcing ribs 260 may improve the structural strength of the entire adapter 200, and the positioning accuracy of the adapter 200 and the torque output assembly 100 may be improved by cooperating with the positioning grooves 130 on the torque output assembly 100. For the torque output assembly 100, the existence of the positioning groove 130 does not affect the connection of the matched cutter 300, and the structural information of the related torque output assembly 100 and the matched cutter 300 can be seen in patent application of the company, and publication number is CN218363910U.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Claims

1. An adapter (200) characterized by comprising a body portion (210) having an annular configuration, the body portion (210) being releasably nested on an outer end face of a torque output assembly (100) or a torque output assembly attachment (110); a first connecting key (220) for connecting with a cutter (300) or a cutter attachment (310) is arranged on one side of the body part (210), and the first connecting key (220) is completely or partially embedded in a notch (320) of the cutter (300) or the cutter attachment device; a second connecting key (230) used for being connected with the torque output assembly (100) is arranged on the other side of the body part (210), and the second connecting key (230) is completely or partially embedded in the positioning hole (120) of the torque output assembly (100); at least two limit protrusions (240) are arranged on the circumferential direction of the inner surface of the body part (210), and the limit protrusions (240) are embedded in the clamping grooves (114) on the circumferential direction of the torque output assembly (100) or the attachment piece of the torque output assembly (100).

2. The adapter (200) according to claim 1, characterized in that the slot (320) is provided with at least one clamping wing (321) in the circumferential direction of the central axis of the slot (320) at least partially delimited in the radial direction;

the number of the first connecting keys (220) is the same as that of the clamping wings (321), and the outer contour of the first connecting keys (220) is matched with the inner contour of the clamping wings (321) and is embedded in the clamping wings (321) in a releasable mode.

3. The adapter (200) according to claim 1, characterized in that the slot (320) is provided with at least four clamping wings (321) in the circumferential direction of the central axis of the slot (320) at least partially delimited in the radial direction;

the number of the first connecting keys (220) is half of the number of the clamping wings (321), and the outer contour of the first connecting keys (220) is matched with the inner contour of two adjacent clamping wings (321) and the notch (320) between the two clamping wings and is detachably embedded in the two adjacent clamping wings (321).

4. The adapter (200) of claim 2 or 3, wherein an interior of the combination of the first connection key (220), the body portion (210) forms a first through hole (250) allowing the torque output assembly attachment (110) to pass through.

5. The adapter (200) according to claim 4, characterized in that the torque output assembly (100) is provided with a second through hole (140) in its centre for mounting a torque output assembly attachment (110) of a stationary tool (300) and/or the adapter (200).

6. The adapter (200) of claim 5, wherein the torque output assembly attachment (110) comprises: two bosses (111) respectively arranged at positions close to two long sides of the second through hole (140) on an end surface far away from one end of the output shaft, two accommodating spaces (112) formed on the outer edges of the bosses (111), and two elastic pieces (113) respectively arranged in the two accommodating spaces (112);

the outer surface of each elastic piece (113) is provided with a clamping groove (114) matched with the limiting protrusion (240).

7. The adapter (200) according to claim 6, wherein the facing surfaces of the combination of the two bosses (111) and the elastic member (113) are each arcuate surfaces and are located on the same cylindrical surface.

8. The adapter (200) according to claim 6, wherein the first connecting key (220) forms a groove in the bottom of the body (210), and the inner contour of the groove in the bottom of the body (210) is adapted to the outer contour of the boss (111), such that the bottom of the first connecting key (220) can be fitted on the boss (111).

9. The adapter (200) of claim 1, wherein a plurality of locating holes (120) are provided in the connecting end face of the torque output assembly (100);

the number of the second connection keys (230) is equal to or less than the number of the positioning holes (120), and the second connection keys (230) are detachably embedded in the positioning holes (120).

10. The adapter (200) according to claim 9, wherein the bottom of the body portion (210) is further provided with an arc-shaped reinforcing rib (260), and a positioning groove (130) capable of accommodating the reinforcing rib (260) is formed on the connecting end surface of the torque output assembly (100).